  The accurate measurement of blood pressure (BP) is an important prerequisite
for the reliable diagnosis and efficient management of hypertension and other
medical conditions. Office Blood Pressure Measurement (OBP) is a technique
performed in-office with the sphygmomanometer, while Ambulatory Blood Pressure
Monitoring (ABPM) is a technique that measures blood pressure during 24h. The
BP fluctuations also depend on other factors such as physical activity,
temperature, mood, age, sex, any pathologies, a hormonal activity that may
intrinsically influence the differences between OBP and ABPM. The aim of this
study is to examine the possible influence of sex on the discrepancies between
OBP and ABPM in 872 subjects with known or suspected hypertension. A
significant correlation was observed between OBP and ABPM mean values
calculated during the day, night and 24h (ABPMday, ABPMnight, ABPM24h) in both
groups (p<0.0001). The main finding of this study is that no difference between
sexes was observed in the relation between OBP and mean ABMP values except
between systolic OBP and systolic ABPM during the night. In addition, this
study showed a moderate correlation between BPs obtained with the two
approaches with a great dispersion around the regression line which suggests
that the two approaches cannot be used interchangeably.
