Which arterial and cardiac parameters best predict left ventricular mass?

Area of Science:

• Cardiology
• Cardiovascular Research
• Clinical Physiology

Background:

• Left ventricular mass (LVM) is influenced by numerous cardiovascular and noncardiovascular factors.
• Understanding the complex interplay of these determinants is crucial for assessing their impact on LVM.

Purpose of the Study:

• To comprehensively analyze the individual and collective impact of various parameters on LVM.
• To identify the primary determinants of LVM in a large Chinese population.

Main Methods:

• Two-dimensionally guided M-mode echocardiography was used to measure LVM.
• 1315 normotensive or untreated hypertensive Chinese subjects were analyzed.
• Multivariate linear regression models were employed to assess determinant significance.

Main Results:

• Stroke volume, systolic blood pressure, contractility, body mass index, and aortic root diameter were identified as key independent determinants of LVM.
• These five factors accounted for 98% of the model variance in LVM.
• Arterial function indices showed limited predictive power for LVM compared to blood pressure.

Conclusions:

• Age, body habitus, and arterial structure/function are confirmed independent determinants of LVM.
• Aortic diameter is a significant structural determinant of LVM.
• Cardiac and vascular load measures, particularly stroke volume, are potent predictors of LVM.