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Left ventricular mass of persistent masked hypertension in Hong Kong Chinese adolescents: a 4-year follow-up study

Published online by Cambridge University Press:  22 April 2018

Man-Ching Yam
Affiliation:
Department of Paediatrics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, China
Hung-Kwan So*
Affiliation:
Department of Paediatrics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, China
Sit-Yee Kwok
Affiliation:
Department of Paediatric Cardiology, Queen Mary Hospital, Hong Kong Special Administrative Region, Hong Kong, China
Fung-Cheung Lo
Affiliation:
Department of Paediatrics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, China
Chi-Fung Mok
Affiliation:
Department of Paediatrics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, China
Chuk-Kwan Leung
Affiliation:
Department of Paediatrics, Kwong Wah Hospital, Hong Kong Special Administrative Region, Hong Kong, China
Wai-Kwok Yip
Affiliation:
Department of Medicine, St. Teresa’s Hospital, Hong Kong Special Administrative Region, Hong Kong, China
Yn-Tz Sung
Affiliation:
Department of Paediatrics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, China
*
Author for correspondence: Dr M.-C. Yam, Department of Paediatrics, Prince of Wales Hospital, 6/F, Lui Che Woo Clinical Sciences Building, Shatin, Hong Kong Special Administrative Region, PR China. Tel: 3505 2849; Fax: 2636 0020; E-mail: [email protected]

Abstract

Objective

In our previous study, the prevalence of childhood masked hypertension was 11%. This study aims to assess the left ventricular mass index of persistent masked hypertension and determine the factors of elevated left ventricular mass index in Hong Kong Chinese adolescents from a community cohort.

Design

Community prospective cohort study, follow-up of a case-control study in community.

Subjects

Patients with masked hypertension at baseline were invited to recheck ambulatory blood pressure for the persistence of masked hypertension.

Results

A total of 144 out of 165 patients with masked hypertension in the 2011/2012 ambulatory blood pressure survey consented to participate in the study. In all, 48 patients were found to have persistent masked hypertension by ambulatory blood pressure rechecking and were matched with normotensive controls by sex, age, and body height. The left ventricular mass (117.3±39.9 g versus 87.0±28.2 g versus 102.0±28.2 g) and left ventricular mass index (30.1±8.4 g/m2.7 versus 23.9±6.3 g/m2.7 versus 25.1±5.7 g/m2.7) were significantly higher in the persistent masked hypertension group (p<0.0001) compared with the patients without persistent masked hypertension and controls. In multivariate linear regression analysis, left ventricular mass index was found to be higher in male gender (β=4.874, p<0.0001) and the patients with persistent masked hypertension (β=2.796, p=0.003). In addition, left ventricular mass index was positively associated with body mass index z-score (β=3.045, p<0.0001) and low-density lipoprotein cholesterol concentration (β=1.634, p=0.015).

Conclusions

Persistent masked hypertension in adolescents is associated with elevated left ventricular mass index.

Type
Original Articles
Copyright
© Cambridge University Press 2018 

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