Advanced Emergency Medical Technician (AEMT) Practice Test

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Prepare for your Advanced Emergency Medical Technician (AEMT) exam. Study using flashcards and rich question sets with detailed explanations to enhance your readiness and confidence for the test day.

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What is the normal capnometry value for measuring carbon dioxide in exhaled air?

50-60 mmHg
90-100 mmHg
35-45 mmHg
20-30 mmHg

The correct answer is: 35-45 mmHg

The normal capnometry value for measuring carbon dioxide in exhaled air generally falls within the range of 35-45 mmHg. This range indicates the proper functioning of the respiratory system, as it reflects effective metabolism and normal ventilation. When a patient exhales, carbon dioxide produced by cellular metabolism is expelled. The value within this range suggests that the body is effectively eliminating CO2, allowing for the maintenance of acid-base balance. Values below 35 mmHg may indicate hyperventilation or inadequate CO2 retention, while values above 45 mmHg could signal hypoventilation or increased production of carbon dioxide in conditions like respiratory failure or metabolic acidosis. Understanding normal capnometry values is crucial for AEMTs, as deviations can guide them in assessing a patient's respiratory status and in making informed decisions regarding interventions, such as the need for supplemental oxygen or advanced airway support.