title: Gas pocket causing pacemaker malfunction.
abstract: Pacemaker malfunction was attributed to the increase in impedance to current flow caused by a pocket of air separating the anodal contact plate of a unipolar generator from the overlying skin. Lack of capture was noted 20 hours after implantation. The malfunction was permanently corrected by bedside aspiration of the gas with a sterile syringe.
mesh_terms: D000388:Air; D006327:Heart Block / Q000151:congenital / Q000628:therapy; D006801:Humans; D007223:Infant; D008297:Male; D010138:Pacemaker, Artificial; D011183:Postoperative Complications; D013396:Suction / Q000379:methods