Key result
Oscillometric blood pressure measurement yielded similar systolic values but overestimated diastolic blood pressure compared to the auscultatory method in low-risk pregnant women.
Why the study?
The study was conducted to compare blood pressure values obtained by auscultatory and oscillometric methods across different gestational periods, taking cuff width into consideration.
Does blood pressure measurement by oscillometric method provide similar values to the auscultatory method in normotensive pregnant women?
Cross-Sectional (n=108)
Does blood pressure measurement by oscillometric method provide similar values to the auscultatory method in normotensive pregnant women?
Oscillometric blood pressure measurement overestimates diastolic blood pressure compared to the auscultatory method in pregnant women, and using standard rather than correct width cuffs underestimates blood pressure in both methods.
Answers are grounded in this paper and cite their sources.
Similar readings may support oscillometric use in low-risk pregnancy; leaves open validation before practice change.
OBJECTIVE: to compare blood pressure values obtained by auscultatory and oscillometric methods in different gestational periods, considering cuff width. METHOD: it is a cross-sectional and quasi-experimental study approved by the Research Ethics Committee. The sample consisted of 108 low-risk pregnant women. Blood pressure measurements were performed in gestational periods of 10-14, 19-22 and 27-30 weeks. RESULTS: The oscillometric device presented values similar to the auscultatory method in systolic blood pressure, but overestimated diastolic blood pressure. Underestimation of blood pressure occurred when using the standard width cuff rather than the correct width cuff in both measuring methods. CONCLUSION: Verification of brachial circumference and use of adequate cuffs in both methods are indispensable to obtain reliable blood pressure values in pregnant women. We recommend performance of additional studies to evaluate diastolic blood pressure overestimation by the Microlife 3BTO-A.
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Vigato et al. (2019) conducted a cross-sectional in Normotensive pregnancy (n=108). Oscillometric blood pressure measurement vs. Auscultatory blood pressure measurement was evaluated on Blood pressure values (systolic and diastolic). Oscillometric blood pressure measurement yielded similar systolic values but overestimated diastolic blood pressure compared to the auscultatory method in low-risk pregnant women.
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