An ECG may be helpful in the diagnosis of Sudden cardiac death. Findings on ECG associated with sudden cardiac arrest include Sinus tachycardia (39%), abnormal T-wave inversions (30%), prolonged QT interval (26%), left/right atrial abnormality (22%), left ventricular hypertrophy (17%), abnormal frontal QRS axis (17%), delayed QRS-transition zone in precordial leads (13%), pathological Q waves (13%), intraventricular conduction delays (9%), multiple premature ventricular contractions (9%), normal ECG (9%).
An ECG may be helpful in the diagnosis of Sudden cardiac death. Findings on ECG associated with sudden cardiac arrest may include:
Sinus tachycardia (39%)
Abnormal T-wave inversions (30%)
Prolonged QT interval (26%)
Left/right atrial abnormality (22%)
LVH (17%)
Abnormal frontal QRS axis (17%)
Delayed QRS-transition zone in precordial leads (13%)
Pathological Q waves (13%)
intraventricular conduction delays (9%)
Multiple premature ventricular contractions (9%)
Normal ECG (9%)
A recently published case report demonstrated a cardiac arrest happening due to a very unusual cause. It was triggered by the increased parasympathethic tone during defecation. The successive changes that were observed on ECG were in this order: prolonged PR interval, 2:1 atrioventricular block, sinus bradycardia and complete heart block. These findings supported the occurrence of a central mechanism in this cardiac arrest.
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