Re-analysis of factors influencing therapeutic efficacy of transurethral electrovaporization ablation of prostate

[Objective] To re-analyze the factors which influence the therapeutic efficacy of transurethral electrovaporization ablation of the prostate (TUVP) and to improve the qualities of TUVP. [Method] The data of 306 patients with benign prostatic hyperplasis (BPH) were studied. Preoperatively, the wage of the prostate was 25~140 g, with mean of 62.5 g, measured by B-ultrasound. The average maximum urinary flow rate (Qmax) was 7.4 mL/s, and average urinary flow rate (Qave) was 3.9 mL/s, the average residual urinary volume (RU) was 80.2 mL. [Results] TUVP was successfully performed on all the 306 patients. The average electrovaporization ablation time was 65 minutes. The average resected prostate tissue weight was 50 g. Of the 306 cases, 291 cases (95.1%) were followed up for 3~40 months. Postoperative average Qmax increased to 18.1 mL/s, Qave increased to 11.2 mL/s an RU decreased to 13 mL. Compared with those of pre-operation, the differences were statistically significant (P 0.01). [Conclusions] Careful analysis of the efficacy-influencing factors before, during and after operation can improve the qualities of TUVP for the patients with BPH.