NCLEX Practice Test 2025 – All-in-One Guide to Master Your Nursing Exam!

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Which vital sign change may indicate hypoxia?

Decreased blood pressure

Increased heart rate

Increased respiratory rate

An increased respiratory rate is a strong indicator of hypoxia because the body is responding to low oxygen levels. When tissues don’t receive enough oxygen, the body attempts to compensate by increasing the rate of breathing, a process known as tachypnea. By breathing faster, the body tries to take in more oxygen and eliminate carbon dioxide, which can build up in the bloodstream when oxygen supply is inadequate.

While other vital signs can indicate a variety of health issues, an increased respiratory rate specifically reflects the body's effort to correct low oxygen levels. This response is critical for maintaining adequate oxygenation to vital organs and tissues, making it a key sign of hypoxia. Monitoring the respiratory rate, alongside other vital signs, is essential in assessing a person's respiratory function and overall health.

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Decreased oxygen saturation

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