[COLLISION WAVES].
D001145:Arrhythmias, Cardiac; D005117:Cardiac Complexes, Premature; D004562:Electrocardiography; D006327:Heart Block; D006801:Humans; D013610:Tachycardia; D013614:Tachycardia, Paroxysmal
ARRHYTHMIA; ELECTROCARDIOGRAPHY; EXTRASYSTOLE; HEART BLOCK; TACHYCARDIA, PAROXYSMAL
KOLLISJONSBOLGER.