bagvalvemasks

A bag-valve-mask, often abbreviated as BVM, is a handheld device used for positive-pressure ventilation. It is commonly employed in emergency medicine and anesthesia. The device consists of a self-inflating bag, a one-way valve, and a mask that fits over the patient's face. When squeezed, the bag delivers air or oxygen to the patient's lungs. The one-way valve prevents exhaled air from re-entering the bag, ensuring that the delivered breath is fresh. The mask creates a seal around the patient's mouth and nose, directing the airflow into the airway.

BVMs are essential for assisting individuals who are unable to breathe adequately on their own. This can occur in various situations, including respiratory arrest, cardiac arrest, severe asthma attacks, or drug overdoses. Healthcare professionals, including paramedics, nurses, and doctors, are trained in the proper use of BVMs. They are also a critical component of automated external defibrillators (AEDs) and are often carried in emergency kits. The device can be connected to an oxygen source to deliver supplemental oxygen, increasing its effectiveness. Proper technique is crucial to avoid hyperventilation or gastric insufflation.