title: Right ventricular pulsus alternans during acute increase in afterload during balloon pulmonic valvuloplasty.
mesh_terms: D000800:Angioplasty, Balloon; D002675:Child, Preschool; D005260:Female; D006352:Heart Ventricles; D006801:Humans; D009200:Myocardial Contraction; D011666:Pulmonary Valve Stenosis / Q000628:therapy*; D011674:Pulse