Conversion of Holmium Laser Enucleation of Prostate to Open Prostatectomy.

To determine the incidence and predictive factors for conversion to an open procedure during Holmium Laser Enucleation of Prostate (HoLEP). A retrospective review was performed on files of all patients that underwent HoLEP at our institution between 2013 and 2020. Data collected included demographics, pre-operative estimated prostate size, intraoperative data, pathologic data, and functional baseline. A univariate and multivariate comparison between the pre-operative data of converted and un-converted cases was conducted. Among a total of 807 HoLEP procedure performed during the above period, 20 cases were converted to open procedures (2.4%). Median pre-operative estimated prostate size in cases of conversion was 228ml compared to 95ml for unconverted cases (P <.001). The reasons for conversion were anatomical in 8 cases (40%), bleeding that was difficult to control endoscopically in 4 cases (20%), expected procedure to be too long due to large prostate size in 6 cases (30%), one case of morcellation technical malfunction, and one case with very large bladder stones not suitable for endoscopic treatment. Prostate size was the only factor that was found to be associated with conversion in univariate and multivariate analysis. The risk of conversion of HoLEP to open procedures is size-dependent. The risk for conversion to open prostatectomy/cystotomy must be communicated to patients who choose HoLEP to improve the informed consent process and provide the highest quality of patient care and transparency. Open prostatectomy/cystotomy should be a part of the armamentarium of every HoLEP surgeon operating on large prostates.

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