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  • Title: Regular alcohol drinking is a determinant of masked morning hypertension detected by home blood pressure monitoring in medicated hypertensive patients with well-controlled clinic blood pressure: the Jichi Morning Hypertension Research (J-MORE) study.
    Author: Ishikawa J, Kario K, Eguchi K, Morinari M, Hoshide S, Ishikawa S, Shimada K, J-MORE Group.
    Journal: Hypertens Res; 2006 Sep; 29(9):679-86. PubMed ID: 17249523.
    Abstract:
    Morning blood pressure (BP) level may play an important role in the pathogenesis of cardiovascular events; however, morning BP detected by home BP monitoring may remain uncontrolled in medicated hypertensive patients even when clinic BP is well controlled (masked morning hypertension: MMHT). We studied the determinants of MMHT in stably medicated hypertensive outpatients. In the Jichi Morning Hypertension Research (J-MORE) study, 969 consecutive hypertensive outpatients were recruited by 43 doctors in 32 different institutes. They had been under stable antihypertensive medication status at least for 3 months. Clinic BP was measured on 2 different days and self-measured BP monitoring was conducted twice consecutively in the morning and evening for 3 days. Four-hundred and five patients had well-controlled clinic BP (systolic BP [SBP]<140 mmHg and diastolic BP [DBP]<90 mmHg). Among them, 246 patients (60.7%) had MMHT (morning SBP > or =135 mmHg and/or DBP > or =85 mmHg). Compared with the patients with normal clinic BP and morning BP, the patients with MMHT had a significantly higher prevalence of regular alcohol drinkers (35.0% vs. 23.3%, p=0.012), a significantly higher number of antihypertensive drug classes (1.83 +/- 0.82 vs. 1.66 +/- 0.84, p = 0.04) and a significantly higher clinic BP level (SBP: 130.4 +/- 7.6 mmHg vs. 127.8 +/- 8.4 mmHg, p = 0.001; DBP: 75.5 +/- 7.6 mmHg vs. 73.6 +/- 7.6 mmHg, p = 0.013). In logistic regression analysis, independent determinants for MMHT were regular alcohol drinking (odds ratio [OR]: 1.76; 95% confidence interval [CI]: 0.99-3.12; p = 0.05) and higher-normal clinic BP (130/85 mmHg < clinic SBP/DBP < 140/90 mmHg) (OR: 1.60; 95% CI: 1.05-2.44; p = 0.03) after adjustment for confounding factors. The patients who both drank alcohol regularly and had a higher-normal clinic BP had 2.71 times higher risk for MMHT than those who did not drink alcohol regularly and had a relatively lower-normal clinic BP (<130/85 mmHg) (p < 0.01). In conclusion, regular alcohol drinking is an independent determinant for MMHT detected by home BP monitoring in medicated hypertensive patients with well-controlled clinic BP.
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