title: DUAL-RATE PACEMAKER.
mesh_terms: D035843:Biomedical Research; D004285:Dogs; D004562:Electrocardiography; D006327:Heart Block; D010138:Pacemaker, Artificial; D012106:Research
keywords: CLINICAL RESEARCH; DOGS; ELECTROCARDIOGRAPHY; EXPERIMENTAL LAB STUDY; HEART BLOCK; PACEMAKER, ARTIFICIAL