[ECG mapping in heart muscle hypertrophy].

Area of Science:

• Cardiology
• Medical Imaging
• Electrocardiography

Context:

• Coronary heart disease (CHD) affects numerous individuals, with myocardial hypertrophy being a significant complication.
• Accurate diagnosis of myocardial hypertrophy is crucial for effective patient management.
• Traditional electrocardiography (ECG) has limitations in precisely diagnosing myocardial hypertrophy.

Purpose:

• To evaluate the efficacy of a 69-lead mapping electrocardiography (ECG) in detecting and quantifying myocardial hypertrophy.
• To establish new diagnostic criteria for myocardial hypertrophy using mapping ECG, adapting existing indices.
• To differentiate hypertrophy-related repolarization disturbances from ischemia-induced ones using exercise-induced mapping ECG.

Summary:

• A study involving 67 participants (15 healthy, 52 with CHD) utilized mapping ECG and echocardiography.
• The principle of Sokolow's index was successfully adapted for R (max) and S (min) potentials in mapping ECG for hypertrophy determination.
• Mapping ECG demonstrated high significance (p < 0.001) in distinguishing hypertrophy-caused repolarization disturbances from ischemia-induced ones, especially with exercise protocols.

Impact:

• Mapping ECG offers a novel, non-invasive method for diagnosing and characterizing myocardial hypertrophy.
• This technique can potentially improve the early detection and management of cardiac conditions.
• The findings suggest that difference mapping is a valuable tool for documenting myocardial hypertrophy.