HOSA Dental Terminology Practice 2026 – All-in-One Study Guide for Exam Success!

An AMBU bag, also known as a bag-valve-mask (BVM), is primarily used to provide positive pressure ventilation to a patient who is not breathing adequately on their own. The device functions by forcing air into the lungs when the bag is squeezed, allowing for oxygen to be delivered directly into the respiratory system.

In emergencies, where a patient may be experiencing respiratory failure, the AMBU bag is essential for ensuring that sufficient oxygen reaches the lungs, thus supporting the patient's breathing until further medical intervention can be provided. It is vital for first responders and healthcare professionals to utilize the AMBU bag effectively in life-threatening situations where the patient shows signs of respiratory distress or cessation of breathing.

While the device does not deliver medication, monitor vital signs, or perform CPR directly, it plays a crucial role in maintaining appropriate oxygenation during critical moments.