Personally, I’d like to see UW/NBME use sinus node dysfunction before changing the Cloze. A bullet in the Extra should be good. There are some tagged UW QIDs. Can anyone check those? Edit was fixing a typo.
UW Step 2 qid:18528 uses the term sick sinus syndome in an asterisk at the bottom of a chart. qid:21471 says in the explanation “Like AF, both second-degree atrioventricular block (with dropped beats) and sinus node dysfunction (ie, sick sinus syndrome, with periods of bradycardia sometimes alternating with tachycardia) increase in prevalence with age.”