While measuring an adult client's blood pressure, the nurse hears the first clear tapping sound at 138 mm Hg, the sounds muffle at 88 mm Hg, and the sounds disappear at 82 mm Hg. Which is the best way to document this finding?

Choice A reason: Documenting 88 mm Hg as the diastolic value is incorrect. While the muffling of sounds (Korotkoff Phase 4) is a significant clinical observation, particularly in children or pregnant women, the standard diastolic pressure for an adult is defined by the complete disappearance of sound (Phase 5). Choice B reason: According to standard clinical guidelines, the systolic pressure is recorded at the first Korotkoff sound (Phase 1), and the diastolic pressure is recorded when the sounds completely disappear (Phase 5). Therefore, 138/82 mm Hg is the correct representation of the patient's arterial blood pressure. Choice C reason: There is no evidence in the provided data to suggest an auscultatory gap. An auscultatory gap is a period of silence between systolic and diastolic sounds. Since the nurse heard a continuous progression from tapping to muffling to silence, there is no clinical indication to redo the measurement. Choice D reason: While recording three numbers (Phase 1/Phase 4/Phase 5) is sometimes done in specific clinical populations, the standard two-number format (Systolic/Diastolic) is the universal requirement for general adult documentation. Including the muffling point is usually unnecessary for routine vital sign recording.