JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Visit-to-visit variability in systolic blood pressure: correlated with the changes of arterial stiffness and myocardial perfusion in on-treated hypertensive patients.

BACKGROUND: Visit-to-visit variability in blood pressure (BP) was demonstrated to correlate with cardiovascular events independent of mean BP. The goal of the present study was to investigate the correlation of visit-to-visit BP variability with artery stiffness and myocardial perfusion in on-treated hypertensive patients.

METHODS: BP was measured in 271 hypertensive patients at every visit over the course of the antihypertensive treatment, and the standard deviation (SD), coefficient of variation (CV), maximum, and minimum in serial BP were calculated. Non-invasive pulse wave analysis was performed in all patients.

RESULTS: Compared with baseline, carotid-femoral pulse wave velocity (cfPWV), aortic augmentation index (Aix) and Aix adjusted to a "standard heart rate" of 75 beats/min (Aix@HR75) were markedly declined, and sub-endocardial viability ratio (SEVR) was obviously increased in each group (p < 0.001). The changes of cfPWV, SEVR, Aix and Aix@HR75 in patients with lower SD of systolic blood pressure (SBP) were significantly greater than those in patients with higher SD of SBP. And the changes were statistically correlated with both SD and CV of serial SBP during follow-up, even after adjusted for mean SBP and mean diastolic blood pressure (DBP).

CONCLUSION: Visit-to-visit SBP variability is independently correlated with changes of artery stiffness and myocardial perfusion in on-treated hypertensive patients.

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