A<unk><unk> <unk>  is a hand-held device used to provide<unk>  to a patient who is not breathing or who is breathing inadequately.  The device is a normal part of a resuscitation kit for trained professionals, such as emergency medical technicians.   The BVM is frequently used in hospitals, and is an essential part of a crash cart.  The device is used extensively in the operating room to ventilate an anesthetized patient in the minutes before an electric ventilator is attached.  The device is self-filling with air, although additional oxygen (O2) can be added.
Use of the BVM to ventilate a patient is frequently called "bagging" the patient. <unk> ging is regularly necessary in medical emergencies when the patient's breathing is insufficient (respiratory failure) or has ceased completely (respiratory arrest). The BVM resuscitator is used in order to manually provide mechanical<unk>  in preference to mouth-to-mouth resuscitation (either direct or through an adjunct such as a pocket<unk> .
Bag-Valve-Mask Ventilation
High frequency ventilation
Artificial respiration
Intrapulmonary percussive ventilator
Mechanical ventilation
Positive pressure ventilation
Positive airway pressure
Positive end-expiratory pressure