title: Collateral approach for biventricular pacing of coronary sinus ostium obstruction.
abstract: A 71-year-old man with dilated cardiomyopathy and complete atrioventricular block underwent cardiac resynchronization therapy (CRT) due to chronic heart failure that was not improved by conventional medical treatment. But we found the coronary vein ostium was completely obstructed by coronary venography. The contrast medium flowed out from the right atrium via a collateral pathway. Thus a left ventricular lead was placed via a collateral pathway and was successfully implanted without complications. The postoperative threshold was 2.7 V at 0.4 ms. The subjective symptom improved after CRT. The safety of this procedure was not clear.
authors.affiliation: Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan.
authors.forename: Yoshimitsu
authors.initials: Y
authors.lastname: Soga
authors.forename: Kenji
authors.initials: K
authors.lastname: Ando
authors.forename: Masakiyo
authors.initials: M
authors.lastname: Nobuyoshi
mesh_terms: D000368:Aged; D054537:Atrioventricular Block / Q000209:etiology / Q000628:therapy*; D006328:Cardiac Catheterization / Q000379:methods; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D002311:Cardiomyopathy, Dilated / Q000150:complications / Q000628:therapy*; D003097:Collateral Circulation; D003287:Contrast Media; D017023:Coronary Angiography; D054326:Coronary Sinus / Q000473:pathology*; D004452:Echocardiography; D006333:Heart Failure / Q000209:etiology / Q000628:therapy*; D006801:Humans; D008297:Male
chemical_list: D003287:Contrast Media