Multiple risk factors of resistant hypertension

group (n=59), non-dipper group (n=73) and dipper group (n=59). Exam central aortic pressure, augmentation index (AI), brachial-ankle pulse wave velocity (baPWV) and ankle-brachial index (ABI). To investigate the difference of indexes of central aortic pressure, baPWV and ABI and the relations among them in the antidipper group, non-dipper group and dipper group when the dipper group was taken as the control group. Results: Pulse pressure, AIx75 and baPWV of central artery, daytime diastolic blood pressure (dDBP), daytime mean arterial blood pressure (dMAP), nighttime systolic blood pressure (nSBP), nighttime diastolic blood pressure (nDBP) and nighttime mean arterial blood pressure (nMAP) of peripheral artery, age of patients with hypertension, and medical history are closely related with hypertension in anti-dipper group (Pb0.05). Conclusion: Pulse pressure (PP) of central artery is related with nighttime declining rate of blood pressure and associated with anti-dipper hypertension to some extent.