Feasibility of Performing Supine Percutaneous Nephrolithotomy for Solitary Renal Pelvic Stones (1.5-3 cm) Under Spinal Anaesthesia: A Single-Centre Study

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Introduction Percutaneous nephrolithotomy (PCNL) procedure has evolved over the years and one such evolution has been the introduction of supine PCNL by Valdivia in 1987. This approach offers the added advantage of safe access in patients with compromised cardiovascular and pulmonary function. General anesthesia is the preferred anesthetic technique for PCNL. However, in the last decade, there has been an increase in the usage of regional anesthesia for this procedure. We share our experience of supine PCNL for solitary renal pelvic stones under regional anesthesia. Aim and objective To assess the feasibility, safety, and efficacy of supine PCNL for solitary renal pelvic stones sized 1.5 to 3 cm under spinal anesthesia. Material and methods This was a retrospective record review of 35 patients (21 male) who underwent supine PCNL under regional anesthesia between January 2022 till December 2022 at our institute. All patients had a solitary renal pelvic calculus sized 1.5-3 cm. Intraoperative and postoperative data were analyzed. Results The mean age of patients was 38.5 ± 15 years. The postoperative pain visual analog scale (VAS) score was <5 in 31 (89%) and >5 in 4 (11%) patients. The mean hospital stay was 3.33 ± 0.88 days. Mean fall in hemoglobin level was 0.49 ± 0.43 mg/dL. Postoperatively, mild hematuria occurred in three patients (8.5%) and fever occurred in two (5.7%) patients. There was no injury to adjacent organs in this series. Blood transfusion was required only in one patient. Complete stone clearance was achieved in all patients. Conclusion In experienced hands, supine PCNL under regional anesthesia is a feasible, safe, and effective approach with minimal morbidity.

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