Salt sensitivity in middle-aged population with normal blood pressure and method for determining salt sensitivity / 第二军医大学学报

ABSTRACT

Objective To investigate the salt sensitivity of middle-aged population with normal blood pressure, and to observe the consistency of chronic sodium load test and cold pressor test in determining salt sensitivity. Methods Totally 68 middle-aged volunteers with normal blood pressure were divided into salt sensitivity (SS) group and non-salt sensitivity (NSS) group according to the results of chronic sodium load test, and the general data and increase amplitudes of blood pressure were compared between SS and NSS groups. The results of the two tests were compared by Χ2 test of fourfold table. Results According to the results of chronic sodium load test 22 (32. 4%) subjects were included in the SS group and 46 (67. 6%) were included in the NSS group. Compared with NSS group, SS group had a significantly elder age, higher proportion of family hypertension history (P0. 05). Conclusion The rate of salt sensitivity in the present normotensive middle-aged population is 32. 4%. Cold pressor test may be used as a substitute for the chronic sodium load test in determination of salt sensitivity.