Navigation data
Part of NREMT Skillset
Page data
Type Medical skill
Keywords medical, trauma
Sustainable Development Goals SDG03 Good health and well-being
Aliases ABC's
Published by GSTC
Published 2020
License CC BY-SA 4.0

The Bag Valve Mask, also known as a BVM, Ambu Bag or manual resuscitator, is primarily used by EMTs to ventilate an unresponsive patient in situations in which the patient's tidal volume is inadequate. It is recommended that when using the BVM, an airway adjunct also be used. To ventilate a patient with a BVM:

  1. Choose the proper mask. The mask should fit over the bridge of the nose with the base of the mask resting between the lower lip and the chin.
  2. Position Properly. The rescuer should be positioned at/above the patient’s head.
  3. Open the Airway. Start in the sniffing position, with the ear to sternal notch aligned in the same plane as this often provides for easier ventilation. If this does not work, try tilting the head backward in a “head-tilt chin lift” maneuver or if a spinal injury is suspected, displace the jaw forward with a “jaw-thurst” to open the airway. Use an airway adjunct if available.
  4. Provide an adequate seal. The mask should create a tight seal. You should not hear air leaking around edge of the mask while you ventilate the patient. The mask should not be pushed down onto the face, but rather, the patients face should be pulled into the mask without closing off the mouth in a "C" or a "CE" grip. An excellent tutorial on sealing can be found here.
  5. Ventilate smoothly. At a rate of 1 breath every 5 to 6 seconds, squeeze the BVM bag over 1 to 1.5 seconds with a consistent pressure that is just enough to get visible chest rise on the patient. For an adult patient, this is typically 500 to 600 mL. The ventilations should not be forceful, or too high a volume for the size of patient, as this can force air into the stomach (gastric distention), which could cause vomiting an/or aspiration, or reduce the the lungs ability to fully inflate.

When possible, the bag valve mask should be a two person skill with one rescuer maintaining the mask seal, while the other squeezes the bag. This has been shown to be more effective at delivering adequate ventilation to the patient. One must be careful to ensure that the soft tissue of the neck is not compressed by the rescuer's fingers.

EMT +, emergency medical technician +  and paramedic +
respiratory system +
medical +  and trauma +
CC BY-SA 4.0 +
congenital +  and hypoxia +
Bag Valve Mask Ventilation +
Medical skill +
Language code"Language code" is a predefined property that represents a BCP47 formatted language code and is provided by Semantic MediaWiki.
en +
Has subobject"Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.
Date"Date" is a type and predefined property provided by Semantic MediaWiki to represent date values.
2020 +
MIME type
Modification date
Is local
18:21:30, 7 December 2020