Why the study?
Does the absence of a time interval or the presence of venous congestion between pairs of arterial blood pressure measurements significantly affect the readings?
Does the absence of a time interval or the presence of venous congestion between pairs of arterial blood pressure measurements significantly affect the readings?
The absence of a time interval between consecutive blood pressure measurements does not significantly affect the readings, challenging current guideline recommendations.
No greater BP variation without interval or with congestion; leaves open whether measurement guidelines require revision.
Guidelines on arterial blood pressure (BP) measurements recommend a time interval between readings. There has been little evidence supporting this recommendation. Therefore, we measured the variation in arterial pressure between the pairs of measurements without an interval (n = 269) or with venous congestion interposed (n = 79). The variation in BP readings was not significantly greater whether a 60-sec interval or venous congestion were present. These overall results do not support the hypothesis that the absence of the time interval or of presence of venous congestion, as may occur in clinical practice, significantly affects BP measurements.
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N.R. Koehler (2004) studied this question.
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