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Published on: June 27, 2025
[The relationship between isolated nocturnal hypertension and left ventricular hypertrophy]
1Centre for Epidemiological Studies and Clinical Trials, Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China.
Zhonghua Nei Ke Za Zhi
|December 17, 2008
Summary
Isolated nocturnal hypertension was not independently linked to left ventricular hypertrophy in a cross-sectional study. Further research is needed to understand the relationship between nighttime blood pressure and heart conditions.
Area of Science:
- Cardiology
- Hypertension Research
- Diagnostic Electrocardiography
Context:
- Nocturnal hypertension, characterized by elevated blood pressure during sleep, is increasingly recognized as a potential cardiovascular risk factor.
- Left ventricular hypertrophy (LVH) is a significant predictor of adverse cardiovascular outcomes.
- Understanding the specific contribution of isolated nocturnal hypertension to LVH is crucial for refining risk stratification and treatment strategies.
Purpose:
- To investigate the association between isolated nocturnal hypertension and left ventricular hypertrophy (LVH) diagnosed via electrocardiogram (ECG) criteria.
- To differentiate the impact of isolated nocturnal hypertension from sustained day-night hypertension on cardiac structure.
Summary:
- A cross-sectional study of 647 participants in China assessed the relationship between isolated nocturnal hypertension and LVH using 24-hour ambulatory blood pressure monitoring and ECG criteria (Sokolow-Lyon voltage and Cornell product).
- While both nighttime and daytime blood pressure were independent risk factors for LVH, isolated nocturnal hypertension was not found to be independently associated with LVH.
- The prevalence of LVH in individuals with isolated nocturnal hypertension (23.6%) was not significantly different from that in normotensive individuals (17.4%).
Impact:
- This study suggests that isolated nocturnal hypertension, as diagnosed by ECG criteria in this population, may not be an independent risk factor for left ventricular hypertrophy.
- Findings highlight the importance of considering both diurnal and nocturnal blood pressure patterns in cardiovascular risk assessment.
- Further longitudinal studies are warranted to confirm these findings and explore potential mechanisms linking nocturnal blood pressure variations to cardiac remodeling.
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