期刊
JOURNAL OF HYPERTENSION
卷 32, 期 2, 页码 245-250出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/HJH.0000000000000029
关键词
epidemiology; hematocrit; hypertension
Objective:Little is known on the relationship between blood hematocrit level as an estimate of whole blood viscosity and the risk of hypertension. We investigated the relationship of higher hematocrit level with incident hypertension in men during a mean follow-up of 5 years.Methods:Participants were 3620 men (mean age 486 years) who participated in two health examinations during 1998-2009. All participants were free of hypertension and within the normal range of hematocrit (39-50%) at baseline. The incidence of hypertension was defined as blood pressure values exceeding 140/90mmHg of SBP and/or DBP at time of follow-up examination.Results:During 17856 person-years of follow-up, 351 new cases of hypertension developed. The relative risk (RR) of incident hypertension in men with hematocrit in the highest tertile vs. men with hematocrit in the lowest tertile was 1.45 (95% confidence interval, CI 1.11-1.90) after adjustment for confounding factors. Every 1% increment in hematocrit was associated with 7% (RR 1.07, 95% CI 1.02-1.13) higher incidence of hypertension after adjusting for risk factors. Men whose hematocrit increased over time had a 25% increased risk of developing hypertension (RR 1.25, 95% CI 1.01-1.57) compared with men with decreased hematocrit after adjustment for risk factors.Conclusion:These results demonstrate that higher hematocrit levels, even within the normal range, were associated with the incidence of hypertension independent of other risk factors in men.
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