Emergency Medical Responder Practice Exam

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Question: 1 / 400

What is a BVM used for, and what oxygen percentage does it deliver?

It is used for hydration and delivers 21% oxygen

It is used to ventilate a non-breathing patient and delivers 21% oxygen from room air

It is used to ventilate a non-breathing patient and delivers 100% oxygen when used with an oxygen tank

A Bag-Valve-Mask (BVM) is a critical tool in emergency medical situations, specifically designed to provide positive pressure ventilation to patients who are not breathing adequately or at all. The primary function of a BVM is to assist or control the ventilatory needs of a patient, ensuring they receive oxygen and are able to expel carbon dioxide. When the BVM is utilized appropriately, it can deliver 100% oxygen when connected to an oxygen tank, significantly improving oxygenation in patients who are in respiratory distress or cardiac arrest.

In contrast, other functions listed, such as hydration or medication administration, are not the primary use of a BVM. Moreover, a BVM does not deliver 21% oxygen unless it is not connected to supplemental oxygen, as would be the case when relying purely on room air. Using a BVM effectively means ensuring that the patient receives the highest concentration of oxygen possible, which is why connecting it to a supplemental oxygen source is standard practice in emergency care.

Emergency Medical Responder Practice Exam

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