Abstract: ObjectiveTo investigate the relation between morning blood pressure surge(MBPS) and myocardial ischemia.Methods315 patients with primary hypertension and coronary heart disease were received Holter and non-invasive ambulatory blood pressure monitoring(ABPM). According to the morning blood pressure raised, they were divided into MBPS group and no-MBPS group. Then the ABPM and Holter data were compared.ResultsThe patients in MBPS group were older. The myocardial ischemia events were more common in MBPS group than in no-MBPS group. The logistic regress showed that the MBPS was related to myocardial ischemia events even after corrected by age, smoke, and sex.ConclusionMBPS is a risk factor of myocardial ischemia.

Key words: hypertension, morning blood pressure surge, myocardial ischemia