title: Murmur and Doppler alternans in critical pulmonary stenosis.
abstract: Pulsus alternans is a well-recognized clinical entity in which alternating strong and weak pulses are detected. It usually is secondary to underlying myocardial failure. Murmur alternans (alternation in murmur intensity) has been described in aortic stenosis and a few right-sided lesions such as pulmonary hypertension and embolism. This report describes a case of murmur alternans in critical pulmonary stenosis that also showed Doppler alternans on echocardiography. The underlying cause was right ventricular systolic dysfunction.
authors: Department of Pediatrics and Child Health, Aga Khan University Hospital, PO Box 3500, Stadium Road, Karachi 74800, Pakistan. mehnaz.atiq@aku.edu
authors: Mehnaz
authors: M
authors: Atiq
authors: Saleem
authors: S
authors: Akhter
authors: Sheikh
authors: S
authors: Abdul Sattar
authors: Shazia
authors: S
authors: Mohsin
authors: Nadeem
authors: N
authors: Aslam
mesh_terms: D001783:Blood Flow Velocity / Q000502:physiology*; D002648:Child; D015150:Echocardiography, Doppler / Q000379:methods*; D004562:Electrocardiography; D006337:Heart Murmurs / Q000000981:diagnostic imaging* / Q000209:etiology / Q000503:physiopathology; D006801:Humans; D008297:Male; D011666:Pulmonary Valve Stenosis / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D012720:Severity of Illness Index; D013318:Stroke Volume / Q000502:physiology*