Linked from
The 65 pages that link to Electrocardiography, each with the reason it gives.
Medical testBroader topic: It exemplifies tests that measure bodily signals directly over time.
Systole (cardiac physiology)Related: The ECG's QRS complex precedes ventricular contraction.
Ebstein's anomalyRelated: It can reveal conduction abnormalities, pre-excitation, and arrhythmias.
Sick sinus syndromeRelated: It can reveal slow rhythms, pauses, and associated atrial arrhythmias.
LightheadednessRelated: It can identify rhythm or conduction problems in people with faintness.