Does obesity have an effect on the ECG in children?

Area of Science:

• Cardiology
• Pediatrics
• Obesity Research

Background:

• Obese adults face increased cardiovascular risks and electrocardiogram (ECG) alterations.
• Data on ECG changes in obese children is limited, with no current pathological findings.
• Observed ECG variations in obese children mimic adult pathological phenomena but remain within normal ranges.

Purpose of the Study:

• To review current data on the influence of childhood obesity on the 12-lead electrocardiogram (ECG).
• To identify early ECG alterations in obese children that may indicate future cardiovascular risks.

Main Methods:

• Systematic review of existing studies on childhood obesity and ECG parameters.
• Analysis of reported ECG variables including P-wave, QT dispersion (QTd), corrected QT interval (QTc), QRS duration, and axis shifts.

Main Results:

• Inconsistent findings across studies regarding specific ECG alterations in obese children.
• Reported changes include prolonged P-wave time, increased QTd, longer PR intervals, wider QRS duration, and leftward axis shifts.
• No pathological ECG findings were identified; observed changes are within normal limits but may represent early stages of cardiovascular changes.

Conclusions:

• Childhood obesity is associated with subtle, non-pathological ECG changes.
• These preliminary alterations may foreshadow the pathological ECG changes seen in obese adults.
• Early identification of these ECG changes could help predict future risks of cardiovascular events like arrhythmia and sudden cardiac death.