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Rationale and design of the SMART Heart study: A prediction model for left ventricular hypertrophy in hypertension
M F L Meijs1, M L Bots, E-J A Vonken
1Departments of Cardiology and Radiology, University Medical Centre Utrecht, Utrecht, the Netherlands.
Insights
Left ventricular hypertrophy (LVH) is a risk factor for heart conditions. The SMART Heart study aims to predict LVH development in hypertensive individuals using genetic and imaging data to guide prevention strategies.
Area of Science:
- Cardiology
- Genetics
- Medical Imaging
Background:
- Left ventricular hypertrophy (LVH) is a significant risk factor for heart failure, coronary heart disease, and stroke.
- Traditionally viewed as adaptive to hemodynamic overload (e.g., hypertension), recent research suggests LVH may be detrimental to cardiac function and survival.
- This challenges the concept of LVH as a solely beneficial response, implying a need for preventative interventions.
Purpose of the Study:
- To develop a predictive model for identifying individuals at high risk of developing left ventricular hypertrophy (LVH) in hypertension.
- To integrate single nucleotide polymorphism (SNP) data with clinical factors for enhanced risk prediction.
- To facilitate and optimize lifestyle or pharmacological interventions aimed at preventing LVH.
Main Methods:
- The SMART Heart study involves 1000 subjects with chronic hypertension.
- Cardiac magnetic resonance (MR) imaging will be utilized to assess cardiac structure and function.
- Single nucleotide polymorphism (SNP) data will be collected and analyzed.
Main Results:
- The study is designed to identify subjects at high risk for developing LVH.
- It aims to establish a prediction model incorporating genetic and clinical data.
- Findings will help extrapolate animal genetic research findings to the human context.
Conclusions:
- Early identification of individuals prone to LVH is crucial for timely intervention.
- A comprehensive prediction model can guide preventative strategies in hypertensive patients.
- This research may refine our understanding of LVH pathogenesis and prevention.
Abstract:
Left ventricular hypertrophy (LVH) is an independent risk factor for the development of heart failure, coronary heart disease and stroke. LVH develops in response to haemodynamic overload, e.g. hypertension. LVH was originally thought to start as an adaptive and beneficial response required to normalise wall stress. However, this concept has been challenged by recent animal experiments suggesting that any degree of LVH is detrimental for the preservation of cardiac function and survival. If confirmed in humans, these findings imply that an increase in LV mass should be prevented, e.g. by lifestyle or pharmacological interventions. To facilitate and optimise interventions, the SMART Heart study was recently set up to develop a prediction model, also involving single nucleotide polymorphism data, for the identification of subjects at high risk of developing LVH in hypertension. For this purpose 1000 subjects with chronic hypertension will undergo cardiac MR imaging. In addition, this study allows the extrapolation of animal experimental genetic research into the human situation. (Neth Heart J 2007;15:295-8.).
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