When caring for a client with respiratory alkalosis, which of the following assessments will assist the nurse in determining the underlying cause of the acid–base disturbance?
1. Pulse oximetry
2. Recent use of narcotics
3. Peripheral pulses
4. Presence of a facial droop
Pulse oximetry
Rationale: Hypoxemia, detected by pulse oximetry, is a typical cause of respiratory alkalosis. Narcotic use will depress respiratory drive, causing hypercapnea and respiratory acidosis. Peripheral pulse and facial droop are not symptoms of acid?base disturbances.
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