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  • Title: Preoperative Risk Factors Predicting Complication Rates of Augmentation Cystoplasty Using the Modified Clavien Classification System in Pediatric Population.
    Author: Telli O, Ozcan C, Hamidi N, Karagoz MA, Hascicek AM, Soygur T, Burgu B.
    Journal: Urology; 2016 Nov; 97():166-171. PubMed ID: 27450942.
    Abstract:
    OBJECTIVE: To evaluate preoperative predictive factors for postoperative complications of augmentation cystoplasty in children by using the modified Clavien classification system (MCCS). PATIENTS AND METHODS: A retrospective review of medical records between 1994 and 2014 identified 117 children (64 males and 53 females) who underwent augmentation cystoplasty. Complications were evaluated according to the MCCS. Univariate and multivariate analyses were used to determine predictive factors affecting complication rates. RESULTS: The mean (SD) age was 9.3 (1.9) years and the mean (SD) hospitalization time was 9.7 (3.6) days. Patients with an adverse or unexpected event within 30 days of surgery were identified. Complications occurred in 29 (24.7%) children; 13 (11.1%) were MCCS grade I, 8 (5.1%) were grade II, 5 (4.2%) were grade III, and 3 (2.5%) were grade IV. Antireflux surgery, outlet resistance increasing procedures, Society of Fetal Urology (SFU) grades 3-4 hydronephrosis, posterior urethral valves, scoliosis, and serum creatinine greater than 1.0 mg/dL were statistically significant predictors of complications on univariate analysis. In the multivariate analysis, SFU grades 3-4 hydronephrosis, bladder neck reconstruction, and serum creatinine greater than 1.0 mg/dL were statistically significant independent predictors of complications. CONCLUSION: Augmentation cystoplasty remains a valid method of treating severe bladder dysfunction in children. SFU grades 3-4 hydronephrosis, outlet resistance increasing procedures, and serum creatinine greater than 1.0 mg/dL were the main predictive factors for postoperative complications. Use of a standardized complication grading system, such as the MCCS, should be encouraged to allow the valid comparison of complication rates between series.
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