alexa Relationship between Nocturnal Blood Pressure and Left
ISSN: 2167-1095

Journal of Hypertension: Open Access
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Research Article

Relationship between Nocturnal Blood Pressure and Left Ventricular Hypertrophy in Hypertensive Patients

Hang Zhu, Wei Zhang, Yajun Shi, Yiming Ma, Yunfeng Han, Jie Liu and Hao Xue*

Department of Cardiology, Chinese People’s Liberation Army General Hospital, 28 Fuxing Road, Beijing 100853, People’s Republic of China

*Corresponding Author:
Hao Xue
Department of Cardiology, Chinese People’s Liberation Army General Hospital
28 Fuxing Road, Beijing, People’s Republic of China
Tel: 86 10 55499211
Fax: 86 10 55499411
E-mail: [email protected]

Received Date: April 16, 2014; Accepted Date: May 26, 2014; Published Date: June 07, 2014

Citation: Zhu H, Zhang W, Shi Y, Ma Y, Han Y, Liu J, Hao Xue (2014) Relationship between Nocturnal Blood Pressure and Left Ventricular Hypertrophy in Hypertensive Patients. J Hypertens 3:151. doi:10.4172/2167-1095.1000151

Copyright: © 2014 Zhu H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Objective: Left ventricular hypertrophy (LVH) is the most common target organ damage in hypertension. However, the association of LVH and circadian rhythm of blood pressure (BP) is unknown. The objective of the present study was to explore the relationship between circadian rhythm of BP and LVH using ambulatory blood pressure monitoring (ABPM).

Study design: A total of 325 untreated hypertensive patients were recruited. The patients were divided into two groups: hypertensive patients with LVH (n=121) and without LVH (n=204). Twenty-four-hour ABPM was performed in all the patients to collect the following parameters: 24-hour average systolic and diastolic pressure, daytime average systolic and diastolic pressure, nocturnal average systolic and diastolic pressure, and night to day BP ratio. The relationship between LVH and the various ABPM parameters was analyzed.

Results: We found that the average nocturnal systolic blood pressure (SBP) in hypertensive patients with LVH was higher than that in hypertensive patients without LVH (145 ± 16.1 mmHg versus 136 ± 12.7 mmHg, P<0.05). The average night to day SBP ratio in hypertensive patients with LVH was also higher than that in hypertensive patients without LVH (0.93 ± 0.04 versus 0.86 ± 0.04, P<0.05). Multiple regression analysis indicate that the average nocturnal SBP and the night to day SBP ratio were associated with LVH (Odds ratio (OR) 1.67, 95% CI: 1.31-3.21; OR: 1.88, 95% CI: 1.56-3.78) by adjustment for traditional covariates.

Conclusion: The average nocturnal SBP and the average night-day SBP ratio are independent risk factors of LVH in patients with hypertension.

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