COPE Health Scholars Practice Test

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What is the normal respiratory rate for adults?

10-15 breaths per minute
12-20 breaths per minute
15-25 breaths per minute
20-30 breaths per minute

The correct answer is: 12-20 breaths per minute

The normal respiratory rate for adults is typically between 12 to 20 breaths per minute. This range is considered the standard for a resting adult and reflects a healthy respiratory function. A rate within this range indicates that the body is efficiently taking in oxygen and expelling carbon dioxide, which is crucial for maintaining homeostasis. The lower limit of 12 breaths per minute allows for adequate ventilation without causing hypercapnia (an excess of carbon dioxide in the bloodstream), while the upper limit of 20 breaths ensures that the body's increase in metabolic demand can be met during various activities. Respiratory rates that fall outside of this range may indicate potential health issues or physiological distress. Other ranges provided in the choices do not align with established medical norms and may suggest under- or over-breathing, which could lead to insufficient oxygen delivery or excessive carbon dioxide buildup, respectively. Therefore, the chosen answer aligns with widely accepted clinical guidelines for adult respiratory rates.