The atrial kick and cardiac pacing.
D006325:Heart Atria; D006327:Heart Block / Q000503:physiopathology / Q000628:therapy*; D006439:Hemodynamics; D006801:Humans; D008722:Methods; D009203:Myocardial Infarction / Q000150:complications* / Q000503:physiopathology; D010138:Pacemaker, Artificial