Key result
Taking successive blood pressure readings without a 60-second interval or with venous congestion interposed did not increase blood pressure oscillation compared to readings taken with a 60-second interval.
Why the study?
Does taking serial blood pressure measurements without a 60-second interval increase blood pressure fluctuation compared to a 60-second interval in resting patients?
Cross-Sectional (n=345)
Does taking serial blood pressure measurements without a 60-second interval increase blood pressure fluctuation compared to a 60-second interval in resting patients?
Serial blood pressure measurements can be reliably taken immediately one after another in the clinical setting without the traditionally recommended 60-second waiting interval.
The objective of the present investigation was to study the effects of a 60-s interval of venous congestion between two noninvasive measurements of arterial blood pressure (ABP) on the fluctuation of ABP, assessed by the standard deviation of the differences between two readings. ABP was measured in 345 successive patients, at rest, four times each. For 269 participants, one pair of readings was obtained with a 60-s interval and the other pair without an interval. For 76 patients, the first pair was read at the same interval, and the second pair had venous congestion interposed and there was no waiting interval. There was no increased ABP oscillation, either when there was no interval between ABP readings, or when venous congestion was interposed compared to pairs of ABP measurements performed with a 60-s interval. There was no increase in ABP oscillations when successive ABP readings were taken without an interval or even with venous congestion interposed. Contrary to the present belief, there seems to be no loss of reliability when blood pressure recordings are taken immediately one after another, in the clinical setting.
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Koehler et al. (2002) conducted a cross-sectional in Patients undergoing blood pressure measurement (n=345). 60-second interval between blood pressure measurements vs. No interval or venous congestion interposed was evaluated on Fluctuation of arterial blood pressure (difference between two readings). Taking successive blood pressure readings without a 60-second interval or with venous congestion interposed did not increase blood pressure oscillation compared to readings taken with a 60-second interval.
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