electrocardiogram: second degree atrioventricular block with 2:1 conduction 2:1
electrocardiogram: second degree atrioventricular block with 2:1 conduction 2:1
electrocardiogram: second degree atrioventricular block with 2:1 conduction 2:1
electrocardiogram: second degree atrioventricular block with 2:1 conduction 2:1