Abstract
Background: BP risk class assessment has been relying on resting BP (rBP) measurements by healthcare providers. Often, this measurement does not correlate with 24-hour ambulatory BP monitoring nor with at-home measurements. Purpose: To assess whether abnormal rise in BP post-mild exercise protocol (PMEP), which resembles most of the activities subjects are under all day, will be more physiologic and informative for risk stratification, beyond the rBP measurements. Methods: We screened 2,924 subjects, ages 20-79, for CVD risk using the Early Cardiovascular Disease Risk Scoring System, also known as the Rasmussen Risk Score, which consists of 10 tests: 7 vascular and 3 cardiac (published previously). The vascular tests include rBP, BP PMEP (2.4 mi/hr and 7% elevation for 3 minutes), small (C2) artery stiffness, and CIMT. Out of the total subjects, 1094 (37%) were asymptomatic and on no medications. These were divided into four BP classes according to the current ACC/AHA guidelines. Results: In the table, normotension with an abnormal rise in BP PMEP has significant cardiovascular structural and functional abnormalities (CVSFA) than those without. Also noted, the higher the BP class, the higher the CVSFA with and without an abnormal rise in BP PMEP. Conclusions: Abnormal rise in BP PMEP in normotensive subjects is associated with significant CVSFA. This may represent a “masked hypertension” cohort. These findings mandate early diagnosis, follow-up, and optimal treatment. Additionally, an abnormal rise in BP PMEP in other classes is more pronounced with stepwise increases in BP class. Hence, we advocate for PMEP for BP classification and treatment. Early detect to protect.
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