Factors associated with respiratory complications (RCs) after pediatric living-related liver transplantation were statistically analyzed in the first 100 cases where surgery was performed at Kyoto University. The overall incidence of postoperative RCs was 45%, including atelectasis (23%), pleural effusion (23%), and pneumonia (12%). Univariate and multivariate analyses were performed with regard to the association between postoperative RCs and 13 pre- and intraoperative variables that were considered to represent the preoperative medical status of the patients and the severity of operative insult. The following four independent variables were found to have prognostic significance with regard to the postoperative RCs: (1) history of preoperative RCs, (2) height < or = -2 SD from the mean for the age, (3) United Network for Organ Sharing score = 1, and (4) intraoperative blood loss > or = 20% of body weight. Postoperative death was highly affected by postoperative RCs: 8 of 11 deaths during the study period were directly or closely related to postoperative RCs. We conclude that postoperative RCs are major contributing factors to operative morbidity and mortality in pediatric living-related liver transplantation, which may possibly be reduced by intensive respiratory management of patients with the above risk factors for postoperative RCs.
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Hasegawa et al. (1996) studied this question.