North Carolina EMT State Practice Exam

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Prepare for the North Carolina EMT State Exam with interactive quizzes and comprehensive explanations. Master your skills and gain confidence by reviewing key topics before test day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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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.