The structural and electrical remodeling of myocardium in LVH and its impact on the QRS voltage

Area of Science:

• Cardiology
• Clinical Electrophysiology
• Hypertension Research

Background:

• Left ventricular hypertrophy (LVH) is a key indicator of cardiac target organ damage in hypertensive patients.
• Both electrocardiography (ECG) and echocardiography detect LVH, but echocardiography is clinically preferred.
• Discrepant ECG findings in LVH are frequently underestimated in clinical decision-making.

Purpose of the Study:

• To explore the relationship between increased left ventricular mass and discordant ECG findings in hypertensive individuals.
• To highlight the clinical relevance of ECG in assessing LVH and cardiovascular risk.

Main Methods:

• Literature review and conceptual analysis of existing knowledge on LVH and ECG.
• Discussion of structural and electrical remodeling in LVH.
• Introduction of the concept of "relative voltage deficit" in hypertension and LVH.

Main Results:

• LVH, detected by ECG or echocardiography, independently predicts cardiovascular risk.
• ECG changes in LVH are linked to alterations in myocardial electrical properties.
• The "relative voltage deficit" concept offers a new perspective on ECG interpretation in LVH.

Conclusions:

• ECG provides valuable, often neglected, information regarding LVH and cardiovascular risk in hypertensive patients.
• Understanding the electrical remodeling in LVH is crucial for interpreting ECG findings.
• Integrating ECG data more effectively can improve cardiovascular risk assessment in hypertension.