Nighttime home blood pressure and the risk of hypertensive target organ damage.
نویسندگان
چکیده
In ambulatory blood pressure (BP) monitoring, nighttime BP has a superior ability to predict hypertensive target organ damage than awake BP. We evaluated whether nighttime BP, assessed by a home BP monitor, was associated with hypertensive target organ damage. We measured clinic BP, out-of-clinic BP including nighttime home BP, and the urinary albumin:creatinine ratio (UACR) in 854 patients who had cardiovascular risk factors. Nighttime home BP was measured at 2:00, 3:00, and 4:00 am, in addition to clinic, awake ambulatory, nighttime ambulatory, and awake home BP. Nighttime home systolic BP (SBP) was slightly higher than nighttime ambulatory SBP (difference, 2.6 mm Hg; P<0.001). Clinic (r=0.186), awake ambulatory (r=0.173), nighttime ambulatory (r=0.194), awake home (r=0.298), and nighttime home (r=0.311) SBPs were all associated with log-transformed UACR (all P<0.001). The correlation coefficient for the relationship between nighttime home SBP and log-transformed UACR was significantly greater than that for the relationship between nighttime ambulatory SBP and log-transformed UACR (P<0.001). The goodness of fit of the association between SBP and UACR was improved by adding nighttime home SBP to the other SBPs (P<0.001). Nighttime home diastolic BP also improved the goodness-of-fit of the association between diastolic BP and UACR (P=0.001). Similar findings were observed for the left ventricular mass index in the subgroup (N=594). In conclusion, nighttime home BP is slightly different from (but comparable to) nighttime ambulatory BP. The addition of nighttime home BP to other BP measures improves the association of BP with hypertensive target organ damage.
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ورودعنوان ژورنال:
- Hypertension
دوره 60 4 شماره
صفحات -
تاریخ انتشار 2012