Reproducibility of morning blood pressure surge
and its relation to blood pressure reactivity
蔡佩珊
Wang MY;Huang CJ;Chang NC;Tsai PS
Abstract
This study examined the stability of the morning blood pressure surge (MBPS) and its relation to blood pressure (BP) reactivity in untreated hypertensives. Thirty-six participants completed a stress task at baseline. Ambulatory BP monitoring was carried out three times on a weekday. The MBPS demonstrated small reproducibility and large coefficient of variation. The MBPS correlated with nighttime BP (p=0.001) but not morning BP or BP reactivity. Dippers had greater MBPS than did nondippers (p < 0.05). The MBPS provides distinct information that is different from the BP response to mental stress.
Keywords blood pressure reactivity, coefficient of variation, morning blood pressure surge, nocturnal dipping, reproducibility