The nurse will perform a palpated pressure before auscultating blood pressure. The reason for this is to:
a. More clearly hear the Korotkoff sounds.
b. Detect the presence of an auscultatory gap.
c. Avoid missing a falsely elevated blood pressure.
d. More readily identify phase IV of the Korotkoff sounds.
ANS: B
Inflation of the cuff 20 to 30 mm Hg beyond the point at which a palpated pulse disappears will avoid missing an auscultatory gap, which is a period when the Korotkoff sounds disappear during auscultation.
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