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Ginecología y obstetricia de México
Print version ISSN 0300-9041
Abstract
OVIEDO-CRUZ, H; REYES-MENDOZA, MA and CORTES-MARTINEZ, MA. Auscultation and automated electronic blood pressure device interchangeability in non-hypertensive pregnant women. A pilot study. Ginecol. obstet. Méx. [online]. 2017, vol.85, n.10, pp.653-658. ISSN 0300-9041. https://doi.org/10.24245/gom.v85i10.1427.
OBJECTIVE:
To define the sample size needed to evaluate exchangeability between the auscultation method and the automated electronic device for MAP measurement in pregnancies without hypertension.
MATERIALS AND METHODS:
A standardized blood pressure measurement on both arms, and by both methods was performed on 30 pregnancies without hypertension; the combined MAP correlation coefficient was calculated, using the lower CI95% for final sample size needed.
RESULTS:
Correlation between methods was r = 0.557 (CI95% = 0.246; 0.763, p = 0.001 and r2 = 0.3097).
CONCLUSIONS:
The statistically significant correlation between methods could be clinically unacceptable for exchangeability; a sample size of n = 127 is needed to prove it.
Keywords : (MeSH): Blood Pressure Determination; Sphygmomanometers; Blood Pressure Monitors; Reproducibility of Results; Humans, Pregnancy; Preeclampsia.
