North Carolina EMT State Practice Exam

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Study for the North Carolina EMT Exam with our engaging resources. Utilize flashcards and multiple choice questions designed to help you grasp critical concepts with hints and explanations. Ace your examination and take the first step towards a rewarding career in emergency medical services!

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What is required for a Non-Rebreather Mask (NRM) to be effective?

It should collapse completely on inhalation
It should not collapse on inhalation
It should be connected to a nebulizer
It should have a valve that closes

The correct answer is: It should not collapse on inhalation

For a Non-Rebreather Mask (NRM) to be effective, it must not collapse on inhalation. This is crucial because the NRM is designed to deliver a high concentration of oxygen to patients who are experiencing respiratory distress or hypoxia. When the mask fits properly and maintains its volume during inhalation, it ensures that the patient receives the maximum amount of oxygen without drawing in ambient air. If the mask collapses during inhalation, it indicates that there is inadequate oxygen supply and that the patient might also be inhaling room air, which dilutes the oxygen being delivered. The one-way valves on the mask prevent exhaled air from entering the reservoir bag, but if the mask collapses, the effectiveness of these valves is compromised. Maintaining a proper seal and volume in the mask allows for the continuous delivery of concentrated oxygen, making it an essential aspect of successful treatment with an NRM.