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By the end of this module, you will be able to maintain and monitor a sterile field in the operating theatre and other clinical settings using aseptic techniques to prevent contamination. You will be able to recognize and articulate appropriate responses to breaches in sterility, ensuring safe and effective support for surgical and other invasive procedures.

You will develop a sound understanding of standard surgical instruments, including their classification, functions, inspection, and appropriate use throughout the different phases of surgery. You will learn how instruments are organized to support an efficient surgical workflow, how experienced scrub nurses anticipate the needs of the surgical team, and how proper instrument organization contributes to patient safety and maintenance of the sterile field.

The module also introduces the principles of safe instrument handling, passing, and receiving, including the safe management of sharps, powered instruments, and specialty instruments. In addition, you will learn the principles of continuous instrument accountability, recognition and management of contamination events, prevention of bloodborne pathogen exposure, and the safe handling, transfer, and post-procedure management of contaminated instruments.

The knowledge gained in this module provides the foundation for the practical psychomotor skills of instrument handling, instrument passing, and maintenance of the sterile field, which are developed through simulation and supervised skills practice.

The target learner is a perioperative trainee  with 3 years of experience in General Nurse training and an additional 2 years post-qualification experience working in a hospital or clinic.

The learner can perform basic operating room support roles, including surgical hand preparation, gowning and gloving, establishing a sterile field, identifying common instruments, performing basic instrument passing, participating in surgical counts, and maintaining fundamental aseptic technique within the operating room. They demonstrate awareness of basic aseptic principles and sterile versus non-sterile areas in the operating room and may have introductory exposure to instrument handling and sterile field practices in a supervised setting.

Working in a Low or middle income country with occasional instrument, supply or personnel shortages. The trainee perioperative nurse is being trained at the level of a district hospital, where essential and emergency procedures and some complex operations are performed and resources to support the treatment are available at the district hospital.

The district hospital has theatres and critical service areas such as the Post Anaesthesia Care Unit (Recovery room),  High Dependency Units and Intensive Care Units.

By the end of this module, you will be able to:

• Classify common surgical instruments according to their function and describe the intended use of instruments used for cutting, clamping, grasping, retracting, suction, suturing, and specialized procedures.
• Inspect surgical instruments before use to identify defects, damage, contamination, or malfunction, and determine the appropriate action when an instrument is unsafe for patient care.
• Explain how surgical instruments are organized on the back table and Mayo stand to support efficient workflow, maintain sterility, and anticipate the needs of the surgical team throughout the different phases of surgery.
• Describe the principles of safe instrument handling, passing, receiving, and orientation, including the safe management of heavy, powered, and specialty instruments while maintaining the sterile field.
• Apply the principles of surgical asepsis to distinguish sterile and non-sterile areas, recognize common contamination events, and explain the appropriate management of actual or suspected breaks in sterility.
• Explain safe sharps handling practices, methods for reducing bloodborne pathogen exposure, and the appropriate response to sharps injuries and occupational exposure incidents.
• Describe the principles of continuous instrument accountability, including the management of contaminated instruments, safe transfer for reprocessing, and documentation and reporting of damaged, missing, or contaminated instruments.

Surgical instruments act as precise extensions of the surgeon's hands. Mastery of instrument names, functions, and safe handling improves operative flow and patient outcomes while minimizing tissue trauma. These instruments are essential for a wide range of surgical and invasive procedures, and each is uniquely designed to perform a specific function safely and efficiently.

For the perioperative nurse, recognizing surgical instruments involves more than knowing their names. It includes understanding the purpose of each instrument, identifying when it should be used, and verifying that it is clean, functional, sterile, and safe before it enters the operative field. A damaged, contaminated, or malfunctioning instrument can interrupt surgery, compromise the sterile field, increase tissue trauma, or place the patient at risk. Developing a systematic approach to instrument recognition and inspection is therefore the foundation for safe instrument handling and efficient surgical workflow.

Although thousands of surgical instruments exist, most can be classified according to the primary function they perform during surgery. Understanding these functional groups helps the perioperative nurse recognize instruments quickly, anticipate the needs of the surgical team, and select the appropriate instrument for each stage of the procedure.

Cutting instruments are used to incise, divide, or excise tissue. Examples include scalpels, scissors, osteotomes, and surgical blades. These instruments are primarily used whenever tissues or bone must be divided with precision. Their sharpness is essential for minimizing tissue trauma, reducing crushing injury, and producing clean surgical incisions.

Because cutting instruments lose effectiveness when damaged or dull, they should be inspected carefully before use to ensure their cutting surfaces remain intact.

Clamping instruments are designed to occlude or compress blood vessels, tissues, or tubing to control bleeding and maintain a clear operative field. Examples include artery forceps and surgical clamps.

Many clamping instruments incorporate a ratchet locking mechanism that allows controlled pressure to be maintained without continuous hand force. During inspection, the ratchet should engage securely and release smoothly without slipping or excessive resistance.

Grasping instruments are used to hold, stabilize, manipulate, or retract tissues and surgical materials without unnecessary slippage or damage. Tissue forceps, sponge-holding forceps, Allis tissue forceps, Babcock forceps, and towel clips are common examples.

Different grasping instruments are designed for different tissues. Some provide a firm grip on dense structures, whereas others minimize trauma when handling delicate tissues. Selecting the appropriate instrument helps preserve tissue integrity while allowing precise surgical manipulation.

Retractors hold back tissues, muscles, or organs to improve visualization of the operative field and provide adequate surgical access. They may be handheld or self-retaining depending on procedural requirements.

Examples include Army-Navy, Richardson, Deaver, and Langenbeck retractors, as well as self-retaining retractors such as the Weitlaner. The choice of retractor depends on the depth of the operative field, the amount of tissue requiring retraction, and the procedure being performed.

Suturing instruments facilitate wound closure by allowing controlled handling of suture needles and tissues. The primary instrument is the needle holder, which is commonly used together with tissue forceps and suture scissors.

Unlike haemostats, needle holders have short, cross-serrated jaws specifically designed to grip needles securely without allowing them to rotate during suturing.

Suction instruments remove blood, irrigation fluids, bone debris, and other material from the operative field to maintain visibility throughout surgery. Common examples include Yankauer and Poole suction devices.

Different suction tips are designed for different procedures and tissue types. Selecting the correct suction device improves visualization while minimizing tissue injury and supporting an efficient operative field.

Every surgical instrument should be inspected before it enters the sterile field or is passed to the surgeon. Sterilization alone does not guarantee that an instrument is safe or functional. Instruments may become damaged during manufacture, transport, cleaning, sterilization, storage, or previous clinical use.

Inspection should be systematic and should confirm that every instrument is clean, intact, functional, and sterile before patient use.

Inspect the instrument for visible blood, tissue debris, stains, corrosion, water spots, or retained cleaning residue. Any instrument that is not completely clean should be removed from service because residual organic material interferes with sterilization and increases the risk of surgical site infection.

Inspect the instrument for cracks, bends, loose components, broken tips, worn box locks, damaged ratchets, or other structural defects. Hinged instruments should open and close smoothly without excessive looseness or stiffness.

When the instrument is closed, the jaws, blades, or tips should align correctly. Poor alignment reduces precision, interferes with normal function, and may increase tissue trauma during surgery.

Moving parts should operate smoothly. Ratchets should engage securely, scissors should cut cleanly, clamps should lock and release appropriately, and hinged instruments should move freely without sticking.

Some instruments used with electrosurgical equipment contain insulated shafts to prevent unintended electrical injury. Inspect insulation for cracks, peeling, blistering, worn areas, or exposed metal. Damaged insulation may allow electrical current to escape and injure surrounding tissues.

Before introducing any instrument into the sterile field, verify package integrity, sterilization indicators, and expiry dates where applicable. If sterility is uncertain for any reason, the instrument should be considered contaminated and replaced immediately.

Unsafe instruments should never be introduced into the sterile field. Examples include instruments that are bent, cracked, corroded, poorly aligned, contaminated, difficult to operate, missing components, or showing damaged insulation.

If an unsafe instrument is identified before surgery, remove it from service and obtain a suitable replacement before the procedure begins. If a defect is identified during surgery, the instrument should be withdrawn immediately, isolated from usable instruments, replaced without delay, and reported according to local policy. Prompt recognition and replacement of unsafe instruments protects patient safety, prevents unnecessary interruption of surgery, and reduces the risk of tissue injury and equipment failure.

• Surgical instruments are classified according to the primary function they perform during surgery.
• Every instrument is designed for a specific purpose and should only be used for its intended function.
• Every instrument must be inspected for cleanliness, structural integrity, alignment, function, insulation (where applicable), and sterility before use.
• Any instrument with uncertain sterility or evidence of damage should be removed from service immediately and replaced.
• Systematic instrument inspection helps maintain patient safety, preserve the sterile field, and prevent unnecessary interruption of surgery.

Self-Assessment

Please complete the following: Surgical Instrument Recognition and Inspection Quiz

After surgical instruments have been recognized and inspected, they must be organized so they can be located and used efficiently throughout the procedure. An organized sterile field allows the scrub nurse to retrieve instruments quickly, minimize unnecessary movement, support the surgeon without delay, and maintain surgical asepsis. Instrument organization is therefore not simply a matter of neatness—it is an essential component of patient safety, operative efficiency, and effective teamwork.

Experienced scrub nurses do more than respond to requests. They understand the natural progression of an operation and prepare instruments before they are needed. This ability, known as anticipation, develops through knowledge of the procedure, familiarity with surgical instruments, observation of the surgeon, and continuous awareness of the stage of the operation.

Surgical instruments are introduced to the operative field in a sequence that mirrors the natural progression of an operation. Although every procedure has unique characteristics, most operations progress through four general phases: Incision (I), Exposure (E), Control/Repair (C/R), and Closure (CL).

Understanding these phases enables the scrub nurse to anticipate which instruments will be required next, organize the Mayo stand efficiently, and support a smooth surgical workflow without unnecessary delays.

The incision phase begins when the surgeon enters the skin and superficial tissues. Instruments commonly used during this stage include scalpels, tissue forceps, haemostats, and scissors. As the incision deepens, haemostatic instruments are frequently required to control bleeding while additional cutting instruments may be introduced to continue tissue dissection.

The scrub nurse should recognize the progression of this phase and prepare the next likely instrument before it is requested.

Once the operative site has been entered, tissues must be retracted and the surgical field maintained to provide adequate visualization. Retractors, suction devices, sponge-holding forceps, and additional haemostatic instruments become increasingly important.

As exposure progresses, different retractors may be required depending on the depth of the operative field and the anatomical structures being accessed.

The control and repair phase involves achieving haemostasis, performing tissue dissection, repairing damaged structures, excising diseased tissue, or inserting implants depending on the procedure.

Needle holders, tissue forceps, clamps, dissecting scissors, vascular clips, and specialized instruments are commonly introduced during this phase. Instrument requirements often change rapidly, requiring the scrub nurse to remain attentive and anticipate each successive step of the operation.

Closure begins once the surgical objective has been completed. Tissue layers are approximated sequentially until the wound is completely closed.

Needle holders, tissue forceps, sutures, skin staplers, and suture scissors become the primary instruments used during this stage. Different suture materials and needle types may be required for each anatomical layer being closed.

Understanding the relationship between these four phases and instrument selection allows the scrub nurse to prepare instruments proactively rather than simply responding to verbal requests.

Instrument organization should allow every required instrument to be retrieved immediately without searching. Although layouts vary between institutions and individual surgeons, the principles of organization remain consistent.

The Mayo stand contains the instruments required during the current stage of the procedure. It should remain uncluttered and contain only those instruments that are likely to be used immediately.

The back table stores additional sterile instruments, supplies, implants, sutures, and reserve equipment that are not immediately required but must remain readily available.

Frequently used instruments should be positioned closest to the scrub nurse, while less frequently used instruments remain organized on the back table until needed.

Sharps should be separated from other instruments to reduce the risk of injury. Heavy instruments should be positioned so they cannot damage delicate instruments, while microsurgical and fine instruments should be protected from unnecessary contact with heavier equipment.

Returning every instrument to the same location after use maintains consistency, reduces unnecessary searching, and allows the scrub nurse to concentrate on the progress of the operation.

Anticipation is one of the defining characteristics of an experienced scrub nurse. Rather than waiting for each verbal request, the scrub nurse observes the surgeon's actions, recognizes the current phase of the operation, and prepares the next likely instrument before it is requested.

For example, as the surgeon completes the skin incision, haemostats should already be available for bleeding control. During deeper dissection, retractors and suction should be prepared before visualization becomes limited. During wound closure, the suture for the next tissue layer should be prepared before completion of the previous layer.

Effective anticipation depends on:

• Thorough knowledge of the planned procedure.
• Familiarity with the surgeon's preferred technique.
• Continuous observation of the operative field.
• Recognition of transitions between the phases of surgery.
• Consistent organization of the sterile field.

Anticipation should never create unnecessary clutter. Only instruments that are likely to be required immediately should be placed on the Mayo stand.

Instrument organization continues throughout the procedure. As surgery progresses, instruments should be cleaned when appropriate, inspected for continued safe function, and returned to their designated locations after each use.

Instruments no longer required should be returned to the back table to maintain adequate working space. Damaged or contaminated instruments should be removed immediately and replaced without interrupting the procedure.

The scrub nurse should continuously monitor the pace of the operation and adjust instrument availability accordingly. Efficient organization minimizes unnecessary movement, supports surgeon concentration, reduces delays, and contributes to maintenance of the sterile field.

• Surgical procedures generally progress through four phases: incision, exposure, control/repair, and closure.
• Each phase requires characteristic groups of surgical instruments.
• The Mayo stand contains instruments needed immediately, while the back table stores reserve instruments and supplies.
• Instruments should be organized according to function and anticipated sequence of use.
• Returning instruments to consistent locations improves efficiency and reduces unnecessary searching.
• Anticipation is based on procedural knowledge, observation, and recognition of the current phase of surgery.
• A well-organized sterile field contributes to patient safety, teamwork, and efficient surgical workflow.

Self-Assessment

Please complete the following: Instrument OrganizationQuiz

Safe instrument handling and passing are essential for maintaining an efficient surgical workflow while preserving the sterile field. Every instrument transfer should be deliberate, controlled, and predictable. Proper handling allows the surgeon to maintain continuous attention on the operative field, minimizes unnecessary movement, reduces the risk of contamination, and helps prevent sharps injuries.

The principles learned in the previous topics—instrument recognition, inspection, organization, and anticipation—provide the foundation for safe instrument transfers. Once the correct instrument has been selected and prepared, it must be presented so that it can be used immediately, safely, and without unnecessary adjustment.

Every surgical instrument should remain under continuous control from the moment it is picked up until it is returned to the sterile field. Instruments should never be tossed, slid across the Mayo stand, or handled carelessly. Controlled handling protects both the instrument and the patient while reducing the likelihood of contamination and accidental injury.

Instrument handling should also be efficient. Unnecessary hand movements, repeated repositioning of instruments, or searching for instruments interrupt the natural rhythm of the operation and increase fatigue for both the scrub nurse and the surgeon.

Throughout every instrument exchange, the scrub nurse should maintain continuous awareness of the sterile field and avoid unnecessary movements that could compromise sterility.

The objective of instrument passing is to place the correct instrument securely into the surgeon's hand in a position that allows immediate use without requiring the surgeon to adjust their grip or the instrument's orientation.

An effective instrument transfer depends on two equally important principles:

• Correct orientation, so the instrument can be used immediately.
• Correct timing, so the instrument is available before it interrupts the surgeon's workflow.

Both principles contribute to smooth surgical flow and reduce unnecessary movement within the sterile field.

Most surgical instruments should be passed in their functional position. The handle is presented toward the surgeon while the working end is correctly aligned for its intended use.

Correct orientation allows the surgeon to immediately apply the instrument without rotating or repositioning it after receiving it. Eliminating unnecessary adjustments improves efficiency, shortens operative time, and reduces distraction.

Although individual surgeons may have personal preferences, several general principles apply to commonly used instruments.

• Scissors are commonly presented with the finger rings toward the surgeon and the blades aligned for immediate use.
• Ring-handled clamps and haemostats are passed with the jaws closed and oriented in the expected direction of application.
• Needle holders are presented so the surgeon can immediately position the needle without rotating the instrument.
• Thumb forceps are presented handle-first with the tips correctly aligned for immediate tissue handling.

Regardless of the instrument being passed, the objective remains the same: the surgeon should be able to receive and use the instrument immediately without unnecessary adjustment.

Timing is as important as instrument orientation. A correctly oriented instrument that is presented too late interrupts the procedure, while an incorrectly anticipated instrument may create unnecessary clutter on the sterile field.

Effective timing depends upon the scrub nurse's understanding of the procedure, recognition of the current phase of surgery, and continuous observation of the surgeon's progress. Rather than reacting only to verbal requests, experienced scrub nurses prepare likely instruments before they are required while avoiding unnecessary preparation of instruments that may never be used.

Good anticipation contributes to efficient teamwork and allows the operation to proceed smoothly without compromising sterility.

Safe instrument handling continues after the surgeon has finished using the instrument. Returned instruments should be received in a controlled manner, inspected for obvious damage, and prepared for their next use.

Where appropriate, blood and tissue debris should be removed from instruments using sterile water or a sterile damp gauze before blood is allowed to dry. Removing debris helps preserve instrument function during the procedure and facilitates subsequent cleaning and reprocessing.

After cleaning, instruments should be returned to their designated location on the Mayo stand or back table according to the organizational principles discussed in Topic 2. Consistent placement reduces unnecessary searching and allows the sequence of instrument passing to remain predictable throughout the operation.

Soiled instruments should never be placed on top of sterile sutures, dressings, implants, or other sterile supplies, as this may contaminate these items and disrupt the organization of the sterile field.

Every instrument transfer presents an opportunity for contamination if performed carelessly. Instruments should remain within the sterile field, unnecessary reaching should be avoided, and contact with non-sterile surfaces must be prevented.

If an instrument is dropped, contacts a non-sterile surface, or its sterility becomes uncertain, it should immediately be considered contaminated and replaced with a sterile instrument. The principles for recognizing and managing contamination events are discussed in the next topic.

• Every instrument transfer should be controlled, deliberate, and predictable.
• Correct instrument orientation allows immediate use without repositioning.
• Effective instrument passing depends on both correct orientation and correct timing.
• Anticipation supports efficient workflow without creating unnecessary clutter.
• Returned instruments should be cleaned when appropriate and returned to their designated location.
• Instruments should always be handled in a manner that preserves sterility and supports patient safety.

Self-Assessment

Please complete the following: Safe Instrument Handling and Passing Techniques Quiz

The primary purpose of the sterile field is to protect the patient from microorganisms that may cause surgical site infections. Surgical asepsis is the practice of creating and maintaining an environment that is as free from microorganisms as possible during invasive procedures. It is based on the principle that only sterile items should come into contact with sterile tissues or sterile equipment. Every member of the surgical team shares responsibility for maintaining aseptic technique by preventing contamination of the sterile field and responding immediately whenever a break in sterility occurs.

The principles discussed in previous SELF modules—including surgical hand antisepsis, donning sterile gowns and gloves, patient skin preparation, and sterile field setup—provide the foundation for maintaining sterility throughout surgery. During the procedure, the perioperative nurse must continuously monitor the sterile field, recognize contamination risks, preserve sterile boundaries during instrument handling, and take immediate corrective action whenever sterility is compromised or uncertain.

Surgical asepsis guides every activity involving sterile instruments, equipment, supplies, and personnel throughout the procedure. Maintaining asepsis requires continuous attention because contamination can occur at any stage of surgery.

The fundamental principles of surgical asepsis include:

• Only sterile items should come into contact with other sterile items.
• Only sterile personnel should work within the sterile field.
• Sterile personnel should handle only sterile instruments, equipment, and supplies.
• Sterile items that become wet, damaged, or contaminated should be considered non-sterile.
• If there is any doubt about sterility, the item should be considered contaminated until proven otherwise.
• Preventing contamination is always preferable to correcting it after it occurs.

These principles reduce the risk of microorganisms entering the surgical wound and contribute to the prevention of surgical site infections.

Maintaining the sterile field begins before the first incision through proper surgical hand antisepsis, sterile gowning and gloving, patient skin preparation, sterile draping, and correct establishment of the sterile field. Once established, the sterile field must be protected continuously until the procedure has been completed.

Sterile instruments should be opened, arranged, and handled using aseptic technique. Sterile items should remain within the sterile field until required for use, and the sterility of every instrument and supply should be preserved throughout the operation.

The sterile field should remain dry, visible, and under the continuous observation of sterile personnel. Moisture may allow microorganisms to pass through sterile barriers by a process known as strike-through contamination. For this reason, wet drapes, wet wrappers, or other compromised sterile barriers should be considered contaminated and replaced whenever possible.

Maintaining the sterile field also requires proper positioning of instruments throughout the procedure. Instruments should remain entirely within the sterile field and above the level of the sterile field. Instrument handles should not extend beyond the edges of the Mayo stand or back table where they may contact non-sterile surfaces. Likewise, instrument tips should never extend outside the sterile field or rest on gown sleeves, drape borders, or operating room furniture. Maintaining these boundaries helps preserve sterility throughout the operation.

Maintaining sterility requires continuous awareness of the boundaries between sterile and non-sterile areas within the operating room.

The sterile zone includes:

• The draped patient.
• Sterile instrument tables and the Mayo stand.
• Sterile instruments and sterile supplies.
• The front of the sterile gown, generally from the chest to the level of the sterile field.
• The sleeves of the sterile gown, from approximately 5 cm (2 inches) above the elbow to the cuff.
• Sterile gloves.

All other areas should be considered non-sterile. These include:

• The operating room floor and walls.
• Operating room furniture and equipment outside the sterile field.
• The anesthesia workstation.
• Unprepared patient skin.
• The back of the sterile gown, the shoulders, neckline, and areas below the level of the sterile field.

Understanding these boundaries helps prevent accidental contamination during instrument handling and movement within the operating room.

Movement within the operating room should always support preservation of the sterile field. Sterile personnel should avoid unnecessary reaching across sterile fields, excessive movement, or turning away from an open sterile field whenever possible. Every movement should be deliberate and should minimize opportunities for contamination.

Non-sterile personnel should maintain an appropriate distance from the sterile field, avoid passing between two sterile areas whenever possible, and move around the perimeter of the operating room rather than through the sterile working area.

Operating room traffic should also be minimized. Frequent opening and closing of operating room doors disrupts positive-pressure airflow, increases airborne particle movement, and may increase the risk of microbial contamination within the operating room.

Maintaining situational awareness of people, equipment, and movement throughout the procedure allows contamination risks to be recognized before they compromise the sterile field.

Most contamination events result from lapses in sterile technique rather than equipment failure. Recognizing these common causes helps the perioperative nurse prevent contamination before it occurs.

Any sterile instrument or supply that contacts an unsterile surface, equipment, or person should immediately be considered contaminated.

Any instrument dropped outside the sterile field immediately loses its sterility regardless of how clean the floor appears. Dropped instruments should never be returned to the sterile field.

Torn wrappers, punctured packages, wet drapes, wet wrappers, damaged sterilization containers, or sterilization indicators that fail to demonstrate successful processing compromise sterility and require immediate replacement.

Sterility may also be compromised when instruments are handled or positioned incorrectly. Instruments should never be allowed to rest on gown sleeves, drape borders, or unsterile operating room furniture. Instrument handles should not extend beyond sterile table edges, and instrument tips should remain entirely within the sterile field. Careless reaching, unnecessary movement, or allowing instruments to leave the sterile field increases the likelihood of contamination.

Small glove perforations, torn gowns, accidental contact with non-sterile surfaces, or contamination that goes unnoticed may compromise the sterile field if not identified promptly.

Breaks in sterility should be recognized and managed immediately. Delaying corrective action or assuming contamination is insignificant increases the patient's risk of infection.

When contamination occurs—or is suspected—the following principles should guide management:

• Stop using the contaminated instrument or item immediately.
• Remove or isolate the contaminated item from the sterile field.
• Replace it with a sterile item as soon as possible.
• Re-establish the integrity of the sterile field before continuing the procedure.
• Communicate the contamination promptly to the surgical team.

If there is any uncertainty about whether sterility has been compromised, the safest approach is always to consider the item contaminated until it has been replaced.

Maintaining sterility depends upon continuous situational awareness and effective communication among all members of the surgical team. Every team member shares responsibility for recognizing contamination risks and speaking up immediately when a concern arises.

Communication should be clear, specific, and timely. Rather than simply stating that contamination has occurred, the team member should identify what became contaminated, how the contamination occurred, and what corrective action has been taken or is required.

Prompt recognition, immediate communication, and appropriate corrective action allow contaminated instruments or supplies to be replaced quickly, minimize unnecessary interruption of the procedure, and help prevent surgical site infections.

• Surgical asepsis is based on preventing microorganisms from entering the operative field.
• Maintaining the sterile field begins before surgery and continues throughout the entire procedure.
• The sterile field should remain dry, visible, and under continuous observation by sterile personnel.
• Wet sterile barriers may allow strike-through contamination and should be considered compromised.
• Instruments should remain completely within the sterile field, above the level of the sterile field, and should not rest on gown sleeves, drape borders, table edges, or unsterile furniture.
• Understanding sterile and non-sterile boundaries helps prevent accidental contamination.
• Excessive operating room movement and unnecessary traffic increase the risk of contamination.
• If sterility is uncertain, the item should always be considered contaminated.
• Prompt recognition, communication, and corrective action are essential for maintaining patient safety.

Self-Assessment

Please complete the following: Maintaining Sterility and Managing Contamination Quiz

Sharps injuries are among the most common occupational hazards in the operating room. Scalpels, suture needles, hypodermic needles, wires, and other sharp instruments can cause injuries that expose healthcare workers to bloodborne pathogens and interrupt the surgical procedure. Most sharps injuries do not occur while an instrument is being actively used by the surgeon. Instead, they occur during passing, receiving, loading, unloading, disposal, or moments of distraction. Preventing these injuries requires more than careful instrument handling—it requires teamwork, situational awareness, effective communication, and a strong culture of safety.

The principles discussed in the previous topics—including instrument organization, anticipation, safe handling, and maintenance of the sterile field—also contribute to sharps safety. Applying these principles consistently protects both the patient and the surgical team while supporting an efficient surgical workflow.

Many instruments used during surgery should always be treated as sharps because they are capable of puncturing or cutting skin.

Common surgical sharps include:

• Scalpels and surgical blades.
• Loaded needle holders containing suture needles.
• Hypodermic needles.
• Kirschner wires (K-wires), guide wires, and pins.
• Trocars and introducers.
• Sharp bone fragments.
• Broken surgical instruments with exposed sharp edges.

Recognizing these hazards allows the surgical team to apply appropriate precautions before injuries occur.

Every sharp instrument should remain under continuous control throughout the procedure. The exposed sharp edge or point should always be directed away from personnel whenever possible, and sharps should never be left concealed beneath drapes, sponges, or other instruments where they cannot be seen.

Whenever practical, sharp instruments should remain secured within another instrument rather than handled directly. For example, suture needles should remain mounted in a needle holder until required, minimizing unnecessary handling.

The location of every sharp instrument should be known at all times. Maintaining awareness of where sharps are located reduces accidental injuries during instrument passing, receiving, counting, and disposal.

Many operating rooms use a neutral zone, also known as a hands-free passing zone, to reduce hand-to-hand transfer of sharp instruments.

The neutral zone is a clearly designated sterile location, such as a magnetic pad, kidney dish, tray, or towel on the Mayo stand, where sharp instruments are placed for retrieval rather than passed directly between team members.

Scalpels, loaded needle holders, and hypodermic needles are commonly transferred using the neutral zone. The scrub nurse places the sharp instrument within the designated area, announces its availability when appropriate, and allows the surgeon to retrieve it. After use, the surgeon returns the instrument to the neutral zone rather than directly into another person's hand.

Using a neutral zone reduces simultaneous handling of sharps and significantly decreases the risk of accidental needlestick and laceration injuries.

Sharps injuries place healthcare workers at risk of exposure to bloodborne pathogens such as hepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus (HIV).

Preventing occupational exposure depends upon consistent application of Standard Precautions. These include:

• Wearing appropriate personal protective equipment (PPE).
• Handling sharps safely.
• Replacing torn or contaminated gloves promptly.
• Using the neutral zone whenever appropriate.
• Avoiding unnecessary hand-to-hand transfer of sharps.
• Disposing of sharps immediately after use in approved puncture-resistant containers.

The most effective method of preventing bloodborne pathogen exposure is preventing sharps injuries before they occur.

Sharps injuries rarely result from a single mistake. They are often caused by a combination of human and system factors that increase the likelihood of error.

Conversations unrelated to the procedure, interruptions, multitasking, or loss of situational awareness may cause personnel to overlook the location of sharp instruments or fail to recognize unsafe conditions. Remaining focused on the procedure and maintaining awareness of the operative field are essential for safe sharps handling.

Long procedures, excessive workload, prolonged standing, and inadequate rest reduce concentration, manual dexterity, and reaction time. Fatigue increases the likelihood of incorrect instrument handling, accidental needlestick injuries, and failure to recognize contamination.

Poor communication contributes significantly to sharps injuries. Unclear instrument requests, assumptions that another team member is ready to receive a sharp, or failure to communicate changes during the procedure increase the risk of injury.

Clear communication, confirmation of requests, and closed-loop communication improve coordination and reduce misunderstandings.

A cluttered sterile field, poorly organized instrument tables, excessive operating room traffic, inadequate lighting, damaged instruments, and insufficient sharps disposal containers all increase the likelihood of sharps injuries.

Maintaining an organized workspace, replacing damaged instruments promptly, and ensuring appropriate equipment is available contribute to a safer operating room environment.

Emergency procedures and unexpected intraoperative events may increase stress and encourage rushed practices. During these situations, adherence to established sharps safety principles becomes even more important to protect both patients and healthcare workers.

Despite careful practice, sharps injuries may still occur. Immediate action reduces the risk of infection and ensures appropriate follow-up.

General principles include:

• Stop the activity safely.
• Wash the affected area according to institutional policy.
• Flush exposed mucous membranes with water or saline when indicated.
• Report the exposure immediately.
• Seek prompt medical evaluation for risk assessment and post-exposure management.
• Complete required institutional documentation.

Healthcare facilities should have established occupational exposure protocols that include risk assessment, laboratory testing, counseling, and post-exposure prophylaxis when indicated.

Preventing sharps injuries requires continuous attention throughout the procedure. Effective prevention strategies include:

• Maintaining situational awareness.
• Minimizing unnecessary distractions.
• Organizing instruments systematically.
• Using the neutral zone whenever appropriate.
• Communicating clearly with all team members.
• Inspecting instruments regularly and replacing damaged equipment promptly.
• Disposing of sharps immediately after use.
• Participating in regular training, simulation exercises, and competency assessments.
• Reporting sharps injuries and near misses to support continuous quality improvement.

A strong culture of safety encourages every member of the surgical team to identify hazards, communicate concerns, and work together to prevent injuries.

• Sharps injuries are a major occupational hazard in the operating room and are largely preventable.
• Common surgical sharps include scalpels, suture needles, hypodermic needles, wires, trocars, and sharp bone fragments.
• Every sharp instrument should remain under continuous control and in a clearly designated location.
• The neutral zone reduces hand-to-hand passing of sharps and lowers the risk of injury.
• Standard Precautions and safe sharps handling reduce occupational exposure to bloodborne pathogens.
• Human factors such as distraction, fatigue, poor communication, and time pressure increase the risk of sharps injuries.
• Environmental and equipment factors also influence safety and should be addressed proactively.
• Prompt reporting of injuries and near misses supports continuous quality improvement and a culture of safety.

Self-Assessment

Please complete the following: Sharps Safety Quiz

Throughout this module, you have learned how surgical instruments are recognized, inspected, organized, passed safely, and maintained within a sterile field. The final stage of instrument management is ensuring that every instrument remains functional, accounted for, and safely managed from the beginning of surgery until it has been transferred for decontamination, inspection, maintenance, and preparation for future procedures.

Instrument management is a continuous responsibility rather than a single task performed at the end of an operation. Throughout surgery, instruments must be monitored for functionality, sterility, organization, and accountability. At the completion of the procedure, they must be safely transferred for decontamination and reprocessing while protecting healthcare personnel from injury and ensuring that complete, functional instrument sets are available for subsequent surgical cases.

The scrub nurse plays a central role throughout this process. By maintaining organized instruments, recognizing damaged or contaminated equipment, preparing instruments for reprocessing, and communicating equipment issues promptly, the scrub nurse contributes not only to the success of the current procedure but also to the safety and efficiency of future procedures.

Instrument accountability begins before surgery and continues until every instrument, sharp, sponge, and reusable item has been safely transferred for reprocessing or disposal. Throughout the procedure, the scrub nurse should remain aware of both the location and condition of every instrument on the sterile field.

Instrument counts are an essential component of accountability. The principles and procedures for performing surgical counts are covered in the SELF module Surgical Counting (ECSACONM) and should be followed throughout every procedure.

Continuous accountability also includes ensuring that instruments remain organized, functional, available when needed, and free from contamination while promptly recognizing damaged, malfunctioning, or missing items.

Instrument management continues throughout the operation. As instruments are returned from the surgeon, they should be inspected for continued safe function before being returned to their designated location.

Throughout the procedure, the Mayo stand should contain only the instruments currently in use or anticipated for immediate use, while the back table serves as the organized reserve for additional instruments and supplies. Returning each instrument to its designated location maintains an orderly sterile field, supports anticipation, reduces unnecessary searching, and promotes accurate accountability.

Examples of problems requiring immediate attention include:

• Clamps that fail to lock securely.
• Scissors that no longer cut smoothly.
• Suction tips obstructed by blood or tissue.
• Bent, loose, or damaged instruments.
• Instruments contaminated after contact with non-sterile surfaces.
• Instruments dropped outside the sterile field.

Damaged or contaminated instruments should be removed from active use immediately and replaced with functioning sterile instruments. Whenever practical, a designated sterile tray or isolated area of the back table may be used to temporarily separate malfunctioning or contaminated instruments until they can be safely managed after the procedure. These instruments should never be returned to the operative field.

Where appropriate, blood and tissue debris should be removed from reusable instruments using sterile water or sterile damp gauze before debris is allowed to dry. This maintains instrument function during surgery and facilitates subsequent cleaning and decontamination.

Instruments should never be placed on sterile sutures, dressings, implants, or surgical sponges intended for patient care. Likewise, instruments should never be cleaned using surgical sponges because this interferes with sponge accountability and increases the risk of contamination.

If an instrument breaks during surgery, every fragment should be accounted for before completion of the procedure. Broken instruments should be removed from service immediately, documented according to institutional policy, and replaced before surgery continues whenever necessary.

At the completion of the procedure, reusable instruments, disposable materials, sharps, and remaining sterile supplies should be handled according to institutional policy to protect personnel and prepare equipment for reprocessing.

Before materials leave the sterile field, instrument, sharp, and sponge counts should be reconciled according to the procedures described in the SELF module Surgical Counting (ECSACONM).

Contaminated reusable instruments should be transferred directly into rigid transport trays, puncture-resistant containers, or designated transport basins for safe movement to the decontamination area. Contaminated sharps should never be passed hand-to-hand during post-procedure handling.

Sharps such as needles, blades, and disposable scalpels should be secured in approved sharps containers before leaving the operating room.

Unused sterile supplies that remain suitable for future use should be separated from contaminated materials and managed according to institutional policy to reduce unnecessary waste while maintaining sterility. Disposable contaminated materials should be discarded into appropriate biohazard waste containers, while reusable instruments should be separated for decontamination and reprocessing.

Throughout transport, instruments should be handled in a manner that protects sterile processing personnel, environmental services staff, and other healthcare workers from accidental sharps injuries and exposure to contaminated materials.

Proper preparation of instruments before transport protects both personnel and equipment while improving the efficiency of the sterile processing department.

Preparation generally includes:

• Removing gross blood and tissue debris according to institutional policy.
• Leaving hinged instruments in the open position to facilitate cleaning.
• Separating delicate instruments from heavier equipment to prevent damage during transport.
• Isolating damaged instruments requiring repair or replacement.
• Arranging instrument trays to allow safe and efficient handling by sterile processing personnel.

These measures improve cleaning effectiveness, reduce instrument damage, and help ensure that complete instrument sets are available for future procedures.

Accurate documentation is an essential component of instrument accountability and quality assurance.

Instrument problems such as damaged equipment, malfunctioning instruments, missing components, broken instruments, or unusual wear should be documented according to institutional policy and communicated promptly to the appropriate personnel, including the sterile processing department (SPD) and perioperative leadership when required.

Examples include:

• Broken or loose instruments.
• Scissors that no longer cut effectively.
• Clamps that fail to lock securely.
• Missing instrument components or fragments.
• Repeated equipment failures.
• Instrument sets requiring replenishment.

Communication with the sterile processing department allows damaged instruments to be repaired, incomplete instrument sets to be replenished, recurring equipment problems to be identified, and preventive maintenance to be performed before future procedures.

Documentation of contamination events, occupational exposures, or other reportable incidents should also follow institutional policy.

Instrument management extends beyond the completion of a single operation. Information gathered during surgery contributes to continuous improvement of patient safety, equipment management, and operating room efficiency.

Reporting damaged equipment, recurring instrument failures, incomplete instrument sets, missing components, supply shortages, workflow challenges, sharps injuries, contamination events, and near misses allows healthcare organizations to identify trends and implement corrective actions.

Regular review of incident reports, equipment repair records, staff feedback, simulation training, and quality improvement initiatives strengthens the culture of safety while ensuring that surgical instruments remain safe, functional, and readily available for future procedures.

• Instrument accountability continues throughout surgery until every instrument has been safely transferred for reprocessing or disposal.
• The Mayo stand should contain only instruments currently in use or anticipated for immediate use, while the back table remains the organized reserve.
• Instruments should be monitored continuously for function, contamination, damage, and completeness.
• Damaged or contaminated instruments should be removed from use immediately, isolated, and replaced.
• Broken instruments require immediate accounting for all fragments and appropriate documentation.
• Material handoff should protect healthcare workers while preparing instruments for decontamination and reprocessing.
• Hinged instruments should be left open, gross debris removed, and damaged instruments separated before transport.
• Communication with the sterile processing department supports equipment maintenance, complete instrument sets, and future patient safety.
• Documentation, reporting, and quality improvement activities strengthen the overall safety and effectiveness of perioperative practice.

Self-Assessment

Please complete the following: Post-Procedure Handling Quiz

Cumulative Assessment

Please complete the following: Instrument Handling and Maintaining Sterile Cumulative Self Assessment