Hypertension Research Today is a free monthly online journal that collates and summarizes the latest research about Hypertension, including details on symptoms, diagnosis, diet, treatment, causes.

Prehypertension, diabetes, and cardiovascular disease risk in a population-based sample: the Strong Heart Study.

Zhang Y, Lee ET, Devereux RB, Yeh J, Best LG, Fabsitz RR, Howard BV

Center for American Indian Health Research, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73190, USA. Ying-zhang4@ouhsc.edu

There are few data about the impact of the recently-defined category of prehypertension (systolic blood pressure 120 to 139 mm Hg or diastolic blood pressure 80 to 89 mm Hg) on cardiovascular disease incidence. It is also unknown whether this association differs between individuals with or without diabetes. A total of 2629 Strong Heart Study participants free from hypertension and cardiovascular disease at baseline examination were followed for 12 years to observe incident cardiovascular disease. Approximately 42% of the 2629 participants had diabetes. We assessed the prevalence of prehypertension and the hazard ratios of incident cardiovascular disease associated with prehypertension. Prehypertension was more prevalent in diabetic than nondiabetic participants (59.4% versus 48.2%, P<0.001 adjusted for age). Compared with nondiabetic participants with normal blood pressure, the hazard ratios of cardiovascular disease were 3.70 (95% confidence interval: 2.66, 5.15) for those with both prehypertension and diabetes, 1.80 (1.28, 2.54) for those with prehypertension alone and 2.90 (2.03, 4.16) for those with diabetes alone. Impaired glucose tolerance or impaired fasting glucose also greatly increased the cardiovascular disease risk in prehypertensive people. Clinical investigation of more aggressive interventions, such as drug treatment for blood pressure control for prehypertensive individuals with impaired fasting glucose, impaired glucose tolerance, or diabetes is warranted.

Published 17 February 2006 in Hypertension, 47(3): 410-4.
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