Predictive Factors for Bleeding During Percutaneous Nephrolithotomy
이정국, 김범수, 박윤규,
소속 상세정보
이정국 ( Lee Jeong-Kuk )
Kyungpook National University School of Medicine Department of Urology
김범수 ( Kim Bum-Soo )
Kyungpook National University School of Medicine Department of Urology
박윤규 ( Park Yoon-Kyu )
Kyungpook National University School of Medicine Department of Urology
KMID : 0358320130540070448
Abstract
Purpose: Although percutaneous nephrolithotomy (PCNL) has been accepted as a standard method for the management of large renal stones, the incidence of renal hemorrhage is relatively high. This study investigated the variables that affect bleeding during PCNL.
Materials and Methods: The medical records of 370 patients who underwent PCNL by a single surgeon from January 2005 to December 2010 were reviewed retrospectively. All patients were divided into two groups according to median blood loss (lesser bleeding group and higher bleeding group). Various clinical and perioperative factors including age, sex, stone size and position, degree of hydronephrosis, operative time, underlying disease, history of anticoagulant medication, presence of previous nephrostomy catheter, stone composition, and thickness of the renal cortex were assessed. For statistical assessment, univariate and multivariate logistic regression analyses were used.
Results: The mean patient age was 48.8 years (range, 22 to 75 years). Forty-three patients (11.6%) received a transfusion and 9 patients (2.4%) underwent angioembolization after surgery. The mean blood loss was 511.8±341.3 mL. Body mass index (BMI), stone size, stone position, operation time, and degree of preoperative hydronephrosis were predictive factors for severe bleeding during PCNL.
Conclusions: On the basis of the results achieved by a single surgeon, staghorn stones, high BMI, large stones, prolonged operation time, and absence of hydronephrosis were significantly associated with the risk of severe bleeding during PCNL.
키워드
Hemorrhage;Kidney calculi;Percutaneous nephrolithotomy
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