7/4/23, 12:27 AM Third heart sound Pathway Feedback Search Clinical Topics Home Findings Third heart sound Third heart sound More common causes Pregnancy Tricuspid regurgitation Ventricular septal defect Aortic stenosis Mitral regurgitation Less common causes Congestive heart failure Constrictive pericarditis https://web.pathway.md/findings/recMhkyd9t3JAd6Am 1/1