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 flow rates can a Venturi mask deliver?

15, 20, 25, 30 percent
24, 28, 35, 40 percent
30, 40, 50, 60 percent
50, 60, 70, 80 percent

The correct answer is: 24, 28, 35, 40 percent

The Venturi mask is specifically designed to deliver precise concentrations of oxygen to patients who require respiratory support. It achieves this through the Venturi effect, which allows the mixing of ambient air with inspired oxygen, providing a consistent oxygen concentration with specific flow rates. Typically, the flow rates that a Venturi mask can deliver range from approximately 24% to 40% oxygen concentration. This accuracy in oxygen delivery is crucial for managing patients with various respiratory conditions, such as chronic obstructive pulmonary disease (COPD), where controlling the oxygen supply is essential to avoid complications. In this case, the choice providing flow rates of 24, 28, 35, and 40 percent corresponds with the established specifications for Venturi masks, underscoring their role in delivering controlled oxygen therapy effectively.