title: Change of heart.
mesh_terms: D006348:Cardiac Surgical Procedures / Q000379:methods*; D005260:Female; D005333:Fetus / Q000601:surgery*; D006351:Heart Valves / Q000196:embryology / Q000601:surgery*; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D014481:United States