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Biomedical subjects

K Shunto

Publications and source records attributed to K Shunto.

4 recordsLinked to original sources

[Successful surgical treatment of mitral regurgitation associated with anti-phospholipid syndrome and systemic lupus erythematosus].

A 39-year-old woman with the diagnosis of mitral regurgitation was admitted to our hospital for surgical treatment. Cerebral thromboembolism and spontaneous abortion had been repeated in her past history. She was suffered from chronic renal failure associated with systemic lupus erythematosus (SLE) and anti-phospholipid syndrome (APS). An operative procedure was recommended because of the progressive heart failure due to mitral regurgitation. For renal failure, continuous ambulatory peritoneal dialysis (CAPD) was introduced at one month before operation. As the operative procedure, valve replacement using Carpentier-Edwards bioprosthesis (27 mm) was done rather than valve reconstruction, because chordal rupture of posterior leaflet and severe hypertrophy of both leaflets were recognized. During operation, uncontrollable bleeding was not observed. However, platelet transfusion was needed. We use warfarin and antiplatelet agents jointly as postoperative anticoagulant therapy. Thromboembolic episodes have not been observed 4 years postoperatively. Relationship between SLE with APS and cardiac valvular lesions has been focused. The present case was considered to be the interesting case which various devices were necessary to operative management including chronic renal failure, cardiopulmonary bypass, selection of prosthetic heart valve, and postoperative anticoagulant therapy for preventing thrombus formation.

Adult↗

[Evaluation for mitral valvuloplasty using rasping procedure].

From April 1992 through July 1994, 7 patients underwent mitral valvuloplasty using rasping procedure in conjunction with open mitral commissurotomy. All patients had satisfactory postoperative results without the complications such as restenosis, regurgitation, infection. However, thromboembolism was observed in 1 patient at the postoperative 6 months. And no reoperation for repaired mitral valve was observed. Transvalvular pressure gradient significantly decreased from 14.3 +/- 8.5 mmHg to 4.7 +/- 1.6 mmHg after operation. Mitral valve areas significantly increased from 1.01 +/- 0.31 cm2 to 1.78 +/- 0.41 cm2 after operation. As compared with preoperative value of 0.32 +/- 0.02, postoperative left ventricular fractional shortening (LVFS) significantly improved to 0.40 +/- 0.03. The advantages of this method is considered to be equable and safe débridement, and no anticoagulation at late period. Mitral valvuloplasty using rasping procedure, except for transmural calcified lesions, is useful and effective method. And excellent postoperative long-term results could be expected.

Aged↗

[Left ventricular-right atrial shunt with bacterial and rheumatic endocarditis of tricuspid valve].

A 14-year-old boy who was operated on for left ventricular-right atrial shunt with bacterial and rheumatic endocarditis of the tricuspid valve (TV) is reported. The patient was pointed out perimembranous ventricular septal defect (VSD) at 4-month old and had complaint of occasional high fever for a half year. The echocardiography showed a vegetation at the TV. The vegetation did not disappear despite of administration of antibiotics for 2 weeks, and pulmonary embolism occurred. Then, the patient underwent resection of the vegetation and direct closure of VSD. The left ventricular-right atrial shunt was formed by the direct communication between VSD below TV annulus and the perforation of septal leaflet of TV adhered to the ventricular septum due to bacterial and rheumatic endocarditis. Earlier operation is needed for this type of case because antibiotics is not effective for the valvular disease.

Adolescent↗

[Giant seroma following the Blalock-Taussig shunt using expanded polytetrafluoroethylene (EPTFE) graft: a case report].

A 15-month-old girl, who was diagnosed asplenia, underwent Blalock-Taussig shunt using EPTFE tubular graft. Postoperatively, discharge containing high concentrations of protein continued to drain from pleural drainage. On the 23rd postoperative day, extirpation of seroma (4 x 3 x 3 cm) and wrapping of the graft using processed porcine pericardium were performed. However, pleural discharge did not decrease and caused atelectasis. On the 38th postoperative day, extirpation of seroma (4.5 x 6 x 14 cm) and partial lobectomy were performed. Pleural effusion persisted with decreasing quantity until the graft was obstructed. Ultimately on the 79th postoperative day, central shunt using Golaski tubular graft was successfully replaced. Thus, the occurrence of seroma should be borne in mind when EPTFE graft is used for shunt operation.

Anastomosis, Surgical↗