Association of Prostate Size and Perioperative Morbidity in Thulium:YAG Vapoenucleation of the Prostate

Objective: To evaluate the association between perioperative morbidity and prostate size in patients with benign prostatic obstruction treated with thulium:YAG vapoenucleation of the prostate (ThuVEP). Methods: 687 patients were prospectively analyzed. Prostate size was <40 ml in 196 (group A), 40-79 ml in 336 (group B) and ≥80 ml in 155 (group C) patients. Results: The mean prostate sizes were 27.94 ± 6.77, 54.38 ± 10.54 and 109.8 ± 28.31 ml for groups A, B and C, respectively (p < 0.001). Hemoglobin loss (g/dl) differed significantly among group A (1.09 ± 1.02), group B (1.28 ± 1.27) and group C (1.62 ± 1.49) (p < 0.001). The correlation between hemoglobin loss and prostate size was very weak in all patients (r = 0.13, p ≤ 0.001). Peak urinary flow rates and post-voiding residual urine improved significantly (p < 0.001) without differences among the groups. The incidence of complications was low and not different among the groups (acute urinary retention 8%, urinary tract infection 4.66%, secondary apical resection 2.91%, transfusion rate 2.03%). Conclusions: Perioperative morbidity and micturition improvement are not associated with prostate size in ThuVEP.

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