408. Management of query pacemaker infection / How does pacemaker syndrome present? / Pathophysiology of pacemaker syndrome July 11th, 2008 by reuben in pacemaker Back Top Tags: card 407. Advantages and disadvantages of unipolar vs. bipolar leads / How to differentiate unipolar vs. bipolar lead on ECG / What is the relationship between P waves and QRS complexes in VVI pacing? / Pacemaker complications 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? Leave a Reply Cancel reply Please post any discussion to the emupdates Reddit page.