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Background/Aims: To evaluate perioperative parameters, early functional outcomes, and the safety profile of holmium laser enucleation of the prostate learning curves with and without mentoring. Methods: The learning curves of 2 surgeons of their first 100 consecutive patients treated with holmium laser enucleation of the prostate were retrospectively analyzed. We analyzed demographic parameters, clinical outcomes, adverse events, and the progress during each learning experience. Results: The only statistically significant differences between the two learning curves were found for operation time (138.2 ± 60.7 vs. 98.2 ± 37.7 min; p < 0.001) in favor of the supervised approach, the total weight of resected prostatic tissue (81.5 ± 50.5 vs. 65.0 ± 6.7 g; p < 0.001) with more tissue removal by the surgeon without guidance, and the perioperative hemoglobin drop (1.9 ± 1.4 vs. 1.1 ± 1.0 g/dl; p < 0.001) in favor of the learning curve with a training programme. In multivariate logistic regression, the time factor was independently associated with a higher drop in hemoglobin levels (OR 1.015; 95% CI 1.000-1.023; p = 0.001). The improvements of clinical outcomes as determined by International Prostate Symptom Score, quality of life, peak urinary flow rate and postvoid residual volume were comparable. After the first 50 procedures the mean operation time significantly improved from 147 to 107.5 minutes for the learning curve without supervision (p < 0.001), whereas the surgical time was consistent throughout the 100 cases with a mentoring programme. The overall incidence of treatment-related adverse events was significantly higher without the training programme (16 vs. 5%; p = 0.008). Conclusions: Our study clearly showed the benefits of a structured training programme to overcome the steep learning curve.

Evaluation of Holmium Laser Enucleation of the Prostate Learning Curves with and without a Structured Training Programme