[Predictors of bladder neck contracture after transurethral procedure on the prostate].

The development and widespread implementation of modern endourological procedures for the treatment of benign prostatic hyperplasia (BPH) has led to a significant reduction in postoperative complications, but these interventions are associated to an increase of bladder neck contracture (BNC) rate. Various data on the frequency, pathogenesis, and risk factors for the development of BNC after endourological interventions are presented in the literature review. The prevalence of BNC after transurethral procedures depending on the type of energy used reaches up to 10%. Risk factors of BNC included the presence of chronic prostatitis and urinary tract infections, as well as small volume BPH. The age, cardiovascular diseases, type 2 diabetes, obesity, and a long-term smoking are considered as additional risk factors. A detailed study of the risk factors for BNC will further minimize BNC rate after transurethral procedures, thus improving the quality of life of patients.

[Predictors of fertility recovery in subfertile men after varicocelectomy].

INTRODUCTION: Varicocelectomy does not always lead to semen improvement and male fertility recovery. OBJECTIVES: Analysis of total progressive motile sperm count (TPMSC) predictive role in fertility recovery of subfertile man after varicocelectomy in combination with other predictors. MATERIALS AND METHODS: This prospective, open, multi-center study comprises 93 men from infertile couples with clinical varicocele who underwent microsurgical (inguinal or subinguinal) varicocelectomy. The changes in the standard semen analysis studied according to WHO 2010 Standards. We also evaluated spontaneous pregnancy rates. A discriminant analysis was carried out with step-by-step selection to identify reliable predictors of pregnancy after varicocelectomy. An increase in TPMSC by at least 12.5 million was considered as a good effect of varicocele repair (reference values for the number and progressive sperm motility according to WHO 2010: 39 million x 0.32 (32%) progressively motile). Patients were divided into 3 groups in regards of direction and degree of semen changes: group I included 48 patients with increase of TPMSC more or equal 12.5 million, group II comprised 20 patients with mild increase in TPMSC (0.1 - 12.5 million) and the III group comprised patients without any effect (TPMSC did not change, or became less than preoperative one) after varicocelectomy. The initial clinical characteristics of patients in the groups were compared. RESULTS: A significant effect was observed in 52% of cases (n=48), a mild favorable effect in 21% (n=20), and no effect in 27% (n=25). Spontaneous pregnancy rates (in 1 year after varicocele repair) were higher in patients of group I than that of groups II and III: 46%, 10% and 12%, respectively (p<0.05). The initial clinical characteristics between groups were comparable (p>0.05). In group I, the initial semen analysis parameters were significantly better than in group II and worse than in group III: the median and 25% -75% of the quartiles for TPMSC were 15 (1-44), 0 (0-8) and 54 (19-100) million, respectively (for all p<0.001). According to discriminant analysis significant predictors of pregnancy after varicocelectomy were an increase of TPMSC, male age and the initial total sperm motility. The predictive accuracy of the prognostic model with these three predictors was 84%, specificity was 87%, and sensitivity was 76%. CONCLUSIONS: The odds of fertility recovery after varicocelectomy has a U-shaped relationship: it is higher in patients with moderate semen quality impairment and it decreases in patients with initially low, and, conversely, high sperm count and motility. An increase in TPMSC by 12.5 million or more is a highly significant indicator of fertility recovery, because in this case the odds of spontaneous pregnancy can reach 50%. Predictors of fertility recovery after varicocelectomy are an increase of TPMSC, male age and the preoperative total motility.

[Varicocelectomy: a critical analysis of predictors for male reproductive function recovery].

Varicocele is one of the most common correctable cause of male subfertility. According to recent meta-analyzes of RCTs varicocelectomy, in general, leads to significant improvement in semen quality and thereby male fertility. However, varicocelectomy success rate is 55-70%, it means that 30-40% of infertile men does not experience fertility improvement after varicocelectomy. The aim of our review was to search and analyze literature data on clinical-anamnestic and laboratory-instrumental predictors that positively or negatively affect varicocelectomy efficacy. As a result of analysis, we systematized the studied predictors based on the total points calculated on the basis of number and quality of studies that confirm or reject the studied predictor as a significant, into three levels of evidence: predictors of high, moderate and low evidence levels. Predictors of high level of evidence included: initial semen parameters, sperm DNA fragmentation index, and Doppler ultrasound imaging of testicular vessels. The initial serum level of FSH and testicular volume were included in the group of predictors of moderate evidence level. At the same time, such factors as the male age and his female partner age, varicocele grade and infertility duration entered the group of predictors of low evidence level. In this way, we performed "gradation" of predictors of varicocelectomy efficacy in subfertile men based on the analysis of the evidence level of each predictor.