Urinary Retention After GreenLight Laser Photoselective Vaporization of the Prostate (GLL.PVP) Surgery for Benign Prostatic Hyperplasia (BPH): A 3-6 Month Retrospective Follow-Up Study

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Objective Our study was designed to evaluate the postoperative urinary retention (UR) and success rate of the GreenLight Laser (Boston Scientific, Marlborough, MA, USA) photoselective vaporization of the prostate (GLL.PVP) procedure for Benign Prostatic Hyperplasia (BPH) patients, both with and without high-risk factors. Methodology We conducted a retrospective follow-up study of postoperative patients who underwent GLL.PVP for BPH. We collected data from clinical health records, including notes from the lower urinary tract symptoms (LUTS) clinic, trial without catheter (TWOC) clinic, and emergency department presentations with UR. The analysis examined several parameters, including the patient's age, high-risk factors, prostate volume, and both preoperative and postoperative objective voiding parameters. These voiding parameters included post-void residual (PVR) and maximum flow rate (Qmax). Additionally, the analysis looked into whether the patient had a catheter or experienced urinary retention prior to the surgery. Results A total of 50 GreenLight Laser PVP surgeries were performed over a 14-month period from May 2023 to July 2024 at West Middlesex University Hospital in London. Most of the patients were between the ages of 60 and 80. Prior to the surgery, data indicated that 17 patients (34%) were using long-term catheters, whereas 33 patients (66%) were not. Additionally, 25 patients (50%) were identified as having high-risk factors, which included being on anticoagulation therapy, a history of urinary retention, and a prostate volume exceeding 100 cc. Notably, the patient without h/o urinary retention had an average preoperative PVR of 150 mL and an average Qmax of 7 mL/second In our 3-6 month retrospective postoperative follow-up study, we found that eight cases (16%) developed urinary retention, while 42 cases (84%) did not, with an average PVR volume of 105 mL and an average Qmax of 13.5 mL/second. In patients with preoperative urinary retention, 13 cases (76%) did not develop UR postoperatively whereas four cases (24%) developed. Conclusion Our study conclusively found that 42 cases (84%) of patients did not experience urinary retention (UR) in the follow-up after undergoing the GLL PVP operation, irrespective of any history of urinary retention or other high-risk factors. This unequivocally demonstrates the operation's efficacy. Furthermore, our findings revealed that three-quarters of patients with a preoperative history of urinary retention also did not develop UR post-surgery. The GLL.PVP procedure is safe and effective, leading to rapid improvements in voiding parameters.

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