J.Jpn. Surg. Soc.
ISSN 1880-1129

[Abstract] [Full Text PDF] （in Japanese / 3729KB） [Members Only And Two Factor Auth.]

J.Jpn. Surg. Soc.. 88(5): 607-612, 1987

Original article

RISK FACTORS FOR SURGICAL REPAIR OF TETRALOGY OF FALLOT : ANALYSIS OF PREOPERATIVE FACTORS BY STEPWISE REGRESSION

Department of Cardiovascular Surgery, Tokyo Women’s Medical College, Second Hospital, Tokyo, Japan
*) Department of Thoracic Surgery, Tokyo University Medical School, Tokyo, Japan

Yoshifumi Kori, Kozo Suma, Yasuo Takeuchi, Kenji Shiroma, Jun Narumi, Tatsuhiko Takahama*)

Fifty-one patients undergoing total repair of tetralogy of Fallot between November 1977 and June 1985 were analyzed with respect to determinants of operative mortality and postoperative right to left ventricular peak systolic pressure ratio (RV/LV). The risk factors were age, sex (Sex), previous shunting operation (Shunt), extent of right ventricular out flow tract patch (Patch), various PA-indexes, maximal left atrial volume/BSA (LA/BSA), left ventricular enddiastolic volume index (LVEDVI), LVEDVI/normal-LVEDVI, RV/LV, Hb, BSA and weight. Univariate analysis indicated that RV/LV and LA/BSA were associated with operative death. A model for operative mortality with three variables emerged from the multiple stepwise regression analysis : Patch, Shunt and Sex (R＝0.421, R2＝ 0.177, F＝3.37). A model for predicted RV/LV with five variables : Weight, Shunt, BSA, Patch and Sex (R＝0.602, R2＝0.363, F＝5.12). However, it was thought difficult to predict operative mortality and postoperative RV/LV by the preoperative variables. Intra-and postoperative factors might have larger influences on operative mortality and RV/LV than the preoperative ones.

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