Successful open commissurotomy and resection of dysplastic myxomatous tissue on the leaflet edges in a neonate and an early infant with critical aortic stenosis

M. Inoue, S. Sano, E. Sugawara, Sadahiko Arai, K. Kino, M. Kamada

Research output: Contribution to journalArticle

Abstract

A neonate and an early infant with critical aortic stenosis successfully underwent open commissurotomy and resection of dysplastic myxomatous tissue on the leaflet edges using cardiopulmonary bypass. Case 1: A 31-day-old boy admitted to our unit with shock. Echocardiography demonstrated critical aortic stenosis and severe left ventricular dysfunction (EF = 15%). Case 2: A 12-day-old boy suddenly deteriorated and required resuscitation with ventilation and inotropic support. Emergency operation was required in both cases using cardiopulmonary bypass with systemic hypothermia (30 degrees C). In both cases, the aortic valve was bicuspid and dysplastic with gelatinous myxomatous tissue on the leaflet edges. Commissurotomy and resection of myxomatous tissue were performed. Their postoperation courses were uneventful and they have been free from medication at present. These results suggest that aortic commissurotomy and resection of myxomatous tissue under direct vision may be preferable for critical aortic stenosis with dysplastic aortic valve.

Original languageEnglish
Pages (from-to)900-904
Number of pages5
JournalJournal of the Japanese Association for Thoracic Surgery
Volume45
Issue number6
Publication statusPublished - Jun 1997

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Aortic Valve Stenosis
Newborn Infant
Cardiopulmonary Bypass
compound A 12
Left Ventricular Dysfunction
Hypothermia
Aortic Valve
Resuscitation
Ventilation
Echocardiography
Shock
Emergencies

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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Successful open commissurotomy and resection of dysplastic myxomatous tissue on the leaflet edges in a neonate and an early infant with critical aortic stenosis. / Inoue, M.; Sano, S.; Sugawara, E.; Arai, Sadahiko; Kino, K.; Kamada, M.

In: Journal of the Japanese Association for Thoracic Surgery, Vol. 45, No. 6, 06.1997, p. 900-904.

Research output: Contribution to journalArticle

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