[Comparison between the ambulatory and occasional determination of the blood pressure].

In this study, we have attempted to determine the link between the occasional measurement of the blood pressure with an Hg sphygmomanometer and the ambulatory pressure, considering different recording periods during the nyctemer. The mean values of the period 8-10 A.M. and more generally of the diurnal period (7 am-10 pm) are close to the values occasionally observed, contrary to the night values and the values of the entire 24 hours. The heart frequency is always well correlated to the mean ambulatory frequency, for the entire period studied. The systolic and mean arterial pressure are also well correlated. On the contrary, there is no meaning when the diurnal period (7 am-10 pm) is reduced to the period of diurnal activity (7 am-7 pm). There is a very strong correlation between the values of the systolic, diastolic, and mean pressures observed during 24 hours and the morning period (8-10 am), giving the impression that this period could be a good reflection of the ambulatory blood pressure of the 24 h.