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In order to get an accurate reading, how long should you wait after a client smokes or drinks coffee before taking his or her blood pressure?

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✓ Correct answer: D. 30 minutes You should wait 30 minutes to take the client’s blood pressure. Cigarette smoking and coffee cause vasoconstriction. Vasoconstriction leads to increased BP. Allowing the client to rest for 30 minutes will facilitate the return of normal blood circulation and can provide accurate BP reading.

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