Laborotory tests obtained in a person with<unk><unk><unk>  will vary<unk> pending on the most likely etiology for their arrhythmia.  Cardiac enzymes and levels of potassium, magnesium and calcium should be obtained.
Torsades de pointes laboratory findings
ST elevation myocardial infarction laboratory findings
Pacemaker syndrome laboratory findings
Atrioventricular block laboratory findings
Ventricular fibrillation physical examination
Atrial fibrillation laboratory findings
Sinoatrial arrest laboratory findings
Encephalopathy electrocardiogram