A 3-day protocol of home blood pressure monitoring had better diagnostic accuracy for hypertension than a 5-day protocol (AUC 0.82 [95% CI 0.75-0.90] vs 0.69 [95% CI 0.60-0.78]).
Cross-Sectional (n=158)
Does a 3-day protocol of home blood pressure monitoring improve diagnostic accuracy for hypertension compared to a 5-day protocol?
A 3-day home blood pressure monitoring protocol with 33 measurements provides better diagnostic accuracy for hypertension than a 5-day protocol with 27 measurements when compared to 24-hour ABPM.
Absolute Event Rate: 0.82% vs 0.69%
BACKGROUND: The best protocol for home blood pressure monitoring (HBPM) is not well defined. In this study, we compare two protocols of HBPM considering 24 h ambulatory blood pressure monitoring (ABPM) as a reference standard for the diagnosis of hypertension. METHODS: One hundred and fifty-eight patients were subjected to 24 h ABPM and to a 3-day (33 measurements) and a 5-day (27 measurements) HBPM protocol. Single-void urinary albumin concentration and echocardiographically determined left ventricular mass were also assessed. Hypertension was defined as blood pressure more than 135/85 mmHg for HBPM and more than 130/80 mmHg for ABPM. RESULTS: Sensitivity, specificity, positive and negative predictive values, and positive and negative likelihood ratios were higher for the 3-day HBPM protocol than the 5-day protocol. The area under the ROC curve (95% confidence interval) was 0.82 (0.75-0.90) for the 3-day protocol and 0.69 (0.60-0.78) for the 5-day protocol. Bland-Altman plots showed smaller dispersion for the 3-day protocol. The values of κ statistics were better with the 3-day HBPM. There was a better association between the 3-day protocol and urinary albumin concentration and left ventricular hypertrophy. CONCLUSION: A 3-day protocol of HBPM has better accuracy than a 5-day protocol for the diagnosis of hypertension considering ABPM as a reference standard.
Almeida et al. (Wed,) conducted a cross-sectional in Arterial hypertension (n=158). 3-day protocol of home blood pressure monitoring vs. 5-day protocol of home blood pressure monitoring was evaluated on Area under the ROC curve for the diagnosis of hypertension (95% CI 0.75-0.90). A 3-day protocol of home blood pressure monitoring had better diagnostic accuracy for hypertension than a 5-day protocol (AUC 0.82 [95% CI 0.75-0.90] vs 0.69 [95% CI 0.60-0.78]).