title: [Experience of Mitral Valve Replacement Using a Pulmonary Autograft (Ross II Operation) in an Infant;Report of a Case].
abstract: A 24-day-old boy suddenly developed progressive heart failure and was transported to our hospital. Echocardiography showed massive mitral regurgitation due to chordal rupture. Mitral valve repair was performed at 28 days of life, but postoperative valvular function was not satisfactory. A mechanical valve was implanted in the supra-annular position at 37 days of life. Two months after valve replacement, the mechanical valve was suddenly stuck. Emergent redo valve replacement was performed, but the prosthetic valve became stuck again 2 months after the 3rd operation, despite sufficient anti-coagulation therapy. At the 4th operation (6 months after birth), we implanted a pulmonary autograft in the mitral position instead of another mechanical valve in an emergent operation. The right ventricular outflow tract was reconstructed with a valved conduit. A postoperative catheter examination, which was performed 1 year after the Ross II operation, showed mild mitral stenosis with no regurgitation. Previous reports of Ross II operations in infants are rare and long-term results are unknown. However, we advocate that this procedure should be a rescue operation for mitral valve dysfunction in the early period of infants.
authors.affiliation: Department of Cardiovascular Surgery, National Hospital Organization Shikoku Medical Center for Children and Adults, Zentsuji, Japan.
authors.forename: Tomohisa
authors.initials: T
authors.lastname: Kawahito
authors.forename: Yoshiyasu
authors.initials: Y
authors.lastname: Egawa
authors.forename: Homare
authors.initials: H
authors.lastname: Yoshida
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Shimoe
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Onishi
authors.forename: Yuhichi
authors.initials: Y
authors.lastname: Miyagi
authors.forename: Kazuya
authors.initials: K
authors.lastname: Terada
authors.forename: Akira
authors.initials: A
authors.lastname: Ohta
mesh_terms: D064592:Autografts; D006348:Cardiac Surgical Procedures; D002908:Chronic Disease; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008943:Mitral Valve / Q000601:surgery*; D008944:Mitral Valve Insufficiency / Q000601:surgery*; D012086:Reoperation; D014057:Tomography, X-Ray Computed; D014182:Transplantation, Autologous