Objective: In the present study we aimed to investigate the potential effect of obesity on pos-toperative outcomes and complications in pati-ents who underwent percutaneous nephrolitho-tomy (PNL).
Materials and Methods: 428 patients who underwent PNL in our clinic between 2009 and 2014 were included in our study. Patients were evaluated in 4 groups according to body mass index (BMI). Group 1 included normal weight (BMI <25 kg/m2), group 2 included overweight (BMI 25-30 kg/m2), group 3 included obese (BMI 30 kg/m2) and group 4 included morbidly obese (BMI >40 kg/m2) patients. Postoperative success was defined as stone free or residual fragments < 3mm. Four groups were compared for operation time, intraoperative bleeding, floroscopy time, hospitalization time, postoperative analgesic requirement, nephrostomy time, postoperative success rates, blood transfusion, and other ma-jor and minor complications. Statistical analyses were performed with SPSS version 17.0 and sta-tistical significance was set at a p value of <0.05. Results: 297 patients were men and 131 were women. Mean age was 44.3 (19-74) years. To-tally PNL was performed in 454 renal units. 123 (29%), 174 (41%), 102 (24%) and 29 (6%) patients were normal weight, over weight, obese and mor-bidly obese respectively. No significant difference was noted between the groups in terms of intrao-perative bleeding, hospitalization time, postope-rative analgesic requirement, nephrostomy time, postoperative success rates, blood transfusion, and other major and minor complications. Floroscopy time and operation time were significantly higher in group 3 and group 4 when compared to other groups.
Conclusion: Although operation and floroscopy time are longer, PNL is a minimal invasive surgical method which can be performed in obese patients with similar success and complication rates in normal weight patients.
Key Words: PNL; obesity; renal stone; urolithiasis; body mass index
Abstract
Objective: In the present study we aimed to investigate the potential effect of obesity on pos-toperative outcomes and complications in pati-ents who underwent percutaneous nephrolitho-tomy (PNL).
Materials and Methods: 428 patients who underwent PNL in our clinic between 2009 and 2014 were included in our study. Patients were evaluated in 4 groups according to body mass index (BMI). Group 1 included normal weight (BMI <25 kg/m2), group 2 included overweight (BMI 25-30 kg/m2), group 3 included obese (BMI 30 kg/m2) and group 4 included morbidly obese (BMI >40 kg/m2) patients. Postoperative success was defined as stone free or residual fragments < 3mm. Four groups were compared for operation time, intraoperative bleeding, floroscopy time, hospitalization time, postoperative analgesic requirement, nephrostomy time, postoperative success rates, blood transfusion, and other ma-jor and minor complications. Statistical analyses were performed with SPSS version 17.0 and sta-tistical significance was set at a p value of <0.05. Results: 297 patients were men and 131 were women. Mean age was 44.3 (19-74) years. To-tally PNL was performed in 454 renal units. 123 (29%), 174 (41%), 102 (24%) and 29 (6%) patients were normal weight, over weight, obese and mor-bidly obese respectively. No significant difference was noted between the groups in terms of intrao-perative bleeding, hospitalization time, postope-rative analgesic requirement, nephrostomy time, postoperative success rates, blood transfusion, and other major and minor complications. Floroscopy time and operation time were significantly higher in group 3 and group 4 when compared to other groups.
Conclusion: Although operation and floroscopy time are longer, PNL is a minimal invasive surgical method which can be performed in obese patients with similar success and complication rates in normal weight patients.
Key Words: PNL; obesity; renal stone; urolithiasis; body mass index