Pulsus bigeminy is seen in?

digoxin and digitalis causes pulses bigemini Pulsus bigeminus is a cardiovascular phenomenon characterized by groups of two heabeats close together followed by a longer pause. The second pulse is weaker than the first. Look for a pattern of what appears to be a relatively normal QRS complexes, each followed by a smaller, abnormal one . Ref Davidson 23rd edition pg 456