Background: Motivated by the possibility that caffeine could ameliorate the effect of postprandial hypotension on a high risk of coronary events and mortality in aging, we hypothesized that caffeinated beverage consumption decreases the risk of cardiovascular disease (CVD) mortality in the elderly. Objective: The objective of the study was to use prospective cohort study data to test whether the consumption of caffeinated beverages exhibits this protective effect. Design: Cox regression analyses were conducted for 426 CVD deaths that occurred during an 8.8-y follow-up in the prospective first National Health and Nutrition Examination Survey Epidemiologic Follow-up Study. The analysis involved 6594 participants aged 32-86 y with no history of CVD at baseline. Results: Participants aged ͧ65 y with higher caffeinated beverage intake exhibited lower relative risk of CVD and heart disease mortality than did participants with lower caffeinated beverage intake. It was a dose-response protective effect: the relative risk (95% CI) for heart disease mortality was 1.00 (referent), 0.77 (0.54, 1.10), 0.68 (0.49, 0.94), and 0.47 (0.32, 0.69) for 0.5, 0.5-2, 2-4, and ͧ4 servings/d, respectively (P for trend ҃ 0.003). A similar protective effect was found for caffeine intake in mg/d. The protective effective was found only in participants who were not severely hypertensive. No significant protective effect was found in participants aged 65 y or in cerebrovascular disease mortality for those aged ͧ65 y. Conclusion: Habitual intake of caffeinated beverages provided protection against the risk of heart disease mortality among elderly participants in this prospective epidemiologic analysis. Clin Nutr 2007;85:392-8.
Am J
The sensitivity of fragmented QRS in left precordial leads for LVA was only 50%, whereas the specificity was 94.5%. It has a relatively low to moderate positive predictive value and high negative predictive value.
hyperemia decreases PWV(1min) in NT but not in HT. DeltaPWV is inversely related to FMD. Blunted hyperemic PWV response may represent impaired vasodilatory reserve.
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