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The electrocardiogram in obesity

I Eisenstein, J Edelstein, R Sarma

Journal of Electrocardiology

|April 1, 1982

Summary

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Morbid obesity is linked to specific electrocardiogram (ECG) changes, primarily T-wave flattening. Weight loss can reverse these ECG abnormalities, suggesting obesity

Area of Science:

Cardiology
Obesity Medicine
Clinical Electrophysiology

Background:

Morbid obesity is increasingly prevalent.
Obesity is associated with various cardiovascular risks.
Electrocardiographic (ECG) changes in obesity require further elucidation.

Purpose of the Study:

To analyze electrocardiographic (ECG) abnormalities in morbidly obese patients.
To compare ECG findings between obese and normal-weight individuals.
To assess the impact of weight loss on ECG parameters in obese patients.

Main Methods:

Comparative analysis of ECGs from 144 obese patients and 100 normal-weight controls.
Serial ECG analysis in 58 obese patients before and after significant weight loss.
Evaluation of QRS voltage, T-wave morphology, and electrical axes.

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Main Results:

Obese patients showed slightly lower QRS voltage compared to controls.
T-wave flattening in inferolateral leads was observed in 71% of obese patients.
Weight loss led to normalization of T-wave flattening and slight rightward shift of P and QRS axes.

Conclusions:

Low QRS voltage is not a significant ECG feature in obesity.
T-wave flattening in inferolateral leads is the most consistent ECG finding in obese individuals.
Weight loss can reverse obesity-associated ECG changes.