409. What does a VVI pacer look like on CXR? / DDD or DVI pacer? / Must DDD or DVI pacer provide 2 spikes on ECG? / What is the effect of a magnet on a pacemaker? July 11th, 2008 by reuben in pacemaker Back Top Tags: card 408. Management of query pacemaker infection / How does pacemaker syndrome present? / Pathophysiology of pacemaker syndrome 410. Management of ?pacemaker syndrome / 4 types of pacemaker malfunction and their causes Leave a Reply Cancel reply Please post any discussion to the emupdates Reddit page.