To stratify complications of percutaneousnephrolithotomy (PCNL) in a single hospital by use of the modified Clavien grading system

Abstract

Introduction: PCNL is relatively safe but evaluating its complication can be of importance so that we can betteranticipate and act on it.Purpose: To evaluate the complications of percutaneous nephrolithotomy (PCNL).Materials and methods: We prospectively analyzed the patients who underwent conventional PCNL at KMCTH from March 2013 to July 2015. Eighty five cases with renal stones more than 1cm and upper ureteric stones were included in the study. Patients with coagulation disorder were not included in this study. Ten patients who had PCNL converted to open procedures were excluded in the study. Patients underwent PCNL in prone position. Pre-operative complete blood count, urine, ultrasound(USG), intravenous Urography (IVU) was done. CT IVU was also done in few cases. During the period of which Demographic data, stone free rate, hospital stay and complications were assessed.Results: A total of 95 cases were enrolled for the study. Ten cases were excluded. There were 47 (55.29%) were female and 38 (44.71%) were male.Most of the patients had unilateral kidney stones(78.82%).Mean size of the was 1.85cm.There were 38(44.70%) renal pelvi-ureteric junction(PUJ) stones out of 85 cases. Sub-costal approach for PCNL was carried out in 78 (91.77%) patients. Mean operative time was 59.29 minutes with blood loss of 72.58 ml and three patients needed blood transfusion. Twelve patients (14.11%) experienced PCNL related complication. There was 1 mortality. Stone free rate was 91.76% (n-78).Conclusion: PCNL is safe with acceptable complication rate and has an acceptable high stone free rate.