Comparison of Intraoperative Blood Loss in Patients with and without Previous Open Renal Stone Surgery on Ipsilateral Side Undergoing Percutaneous Nephrolithotomy

Objective: To compare the intraoperative blood loss in subjects with and without history of POS on ipsilateral side undergoing PCNL.Material and Methods: The quasi-experimental study was carried out at the Department of Urology, Sir Ganga Ram Hospital, Lahore Pakistan during January to December 2021Pakistan during January to December 2021. Total 68 patients were categorized into two equal sized groups: 34 patients with a history of POS on ipsilateral side in A group and 34 patients with primary PCNL in B group. The demographic details included age, gender, signs and symptoms. The location, size and number of stone on non-contrast enhanced CT scan KUB/IVU were noted. Complete blood counts performed 24-hour before and 48-hour after PCNL surgery. The difference of pre- & postoperative Hb levels and number of pints transfused used to calculate the blood loss. Statistical Package for Social Sciences (SPSS) version 26 used for entry and analysis of data.Results: Most of the cases had stone in pelvic, followed by upper and then middle or lower pole and none required blood transfusion before PCNL surgery in both groups. The average stone size was 2.81±0.49 cm for A group and 2.71±0.59 cm for B group. The mean of Hb level was 13.8±1.7 g/dl before PCNL and 13.6±1.7 g/dl after PCNL in A group. The drop in Hb level within A group was also significant with p value <0.001. The mean of Hb level was 14.5±1.5 g/dl before PCNL and 14.2±1.5 g/dl after PCNL in B group. The drop in Hb level within B group was significant with p-value <0.001. However, mean of Hb levels before and after PCNL were not different between groups. The median hospital LOS in A group was significantly longer than in B group (4.0 days vs. 3.0 days, p-value 0.042).Conclusion: PCNL surgery is an effective and safe procedure among all patients with or without a history of POS in term of blood loss.Keyword: percutaneous nephrolithotomy (PCNL), renal stone surgery (POS), nephrolithiasisHow to cite: Tahir UM, Khan S, Umar M, Ghous G, Rizwan A, Ali W, Baksh E.Comparison of intraoperative blood loss in patients with and without previous open renal stone surgery on ipsilateral side undergoing percutaneous Nephrolithotomy. Esculapio - JSIMS 2026;22(02): 146-151DOI: 10.51273/esculap.v22i02.1439