preferred_name: electrocardiogram: atrioventricular block second degree conduction 4:1
preferred_name_lc: electrocardiogram: atrioventricular block second degree conduction 4:1
label: electrocardiogram: atrioventricular block second degree conduction 4:1
label_lc: electrocardiogram: atrioventricular block second degree conduction 4:1