RT Journal
A1 Hozawa A, Ohkubo T, Nagai K, et al
T1 Prognosis of isolated systolic and isolated diastolic hypertension as assessed by self-measurement of blood pressure at home: The ohasama study
JF Archives of Internal Medicine
JO Archives of Internal Medicine
YR 2000
FD November 27
VO 160
IS 21
SP 3301
OP 3306
DO 10.1001/archinte.160.21.3301
UL http://dx.doi.org/10.1001/archinte.160.21.3301
AB Background 
    Although the clinical significance of systolic-diastolic hypertension and isolated systolic hypertension has been established, the significance of isolated diastolic hypertension has not been fully investigated.Objective 
    To clarify the prognostic significance of isolated systolic and isolated diastolic hypertension as assessed by self-measurement of blood pressure (BP%) at home (home BP measurements), which has a better reproducibility and prognostic value than casual BP measurements in the general population.Subjects and Methods 
    We obtained home BP measurements for 1913 subjects aged 40 years or older, then followed up their survival status (mean, 8.6 years). We classified the subjects into the following 4 groups according to their home BP levels: systolic-diastolic hypertension, isolated systolic hypertension, isolated diastolic hypertension, and normotension. The prognostic significance of each type of hypertension for the risk of cardiovascular mortality risk was investigated using a Cox proportional hazards regression model adjusted for possible confounding factors.Results 
    The risk for isolated systolic hypertension and systolic-diastolic hypertension were significantly higher than the relative hazard for normotension, while isolated diastolic hypertension was associated with no significant increase in risk. Home pulse pressure measurement was also independently associated with an increase in the risk of cardiovascular mortality.Conclusions 
    Isolated diastolic hypertension, as assessed by home BP measurements, carried a low risk of cardiovascular mortality, similar to that found in subjects with normotension, suggesting that the prognosis of hypertension would be improved by treatment focused on systolic rather than on diastolic home BP measurements. To our knowledge, this study is the first to demonstrate the clinical significance of pulse pressure as assessed by home BP measurement.