What assessment finding is the earliest sign of hypoxia?
a. Restlessness
b. Decreased blood pressure
c. Cardiac dysrhythmias
d. Cyanosis
A
Hypoxia is due to inadequate tissue oxygen at the cellular level. The earliest sign of hypoxia is restlessness; as it progresses, mental status changes, cardiac changes, and cyanosis can occur. Early hypoxia results in an elevated blood pressure. In later hypoxia, vital sign changes such as increased heart and respiratory rate occur. Cyanosis is a late sign of hypoxia.
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