title: Transvenous pacemaker implantation by way of an anomalous left superior vena cava.
mesh_terms: D000368:Aged; D006328:Cardiac Catheterization / Q000295:instrumentation; D006327:Heart Block / Q000628:therapy; D006801:Humans; D008297:Male; D008722:Methods; D010138:Pacemaker, Artificial; D014683:Vena Cava, Superior / Q000002:abnormalities*