background: the most frequent physical finding in infertile men is varicocele, in which one of the mechanisms that can affect seminal parameters is oxidative stress. objective: our study aimed, for the first time, to compare the efficacy of recombinant human follicle-stimulating hormone (rhfsh), human chorionic gonadotropin (hcg) and human menopausal gonadotropin (hmg) on sperm parameters and f...

OBJECTIVE To determine the precise degree of variability that is represented by the reproducibility and reliability of semen analysis. The general assumption is that semen analyses need to be repeated because of a high degree of within-individual variability. However, the precise degree of variability is not well established in male partners of subfertile couples. DESIGN Retrospective cohort ...

OBJECTIVES To examine patient compliance, significance of rare nonmotile sperm (RNMS) and to determine the timing and number of semen analyses required to confirm sterility. PATIENTS AND METHODS From November 2001 to November 2004, 436 consecutive primary vasectomies were performed by one surgeon. All patients were instructed to submit two initial semen specimens for analysis (2 and 3 months ...

STUDY QUESTION Do two semen analyses predict natural conception better than a single semen analysis and will adding the results of repeated semen analyses to a prediction model for natural pregnancy improve predictions? SUMMARY ANSWER A second semen analysis does not add helpful information for predicting natural conception compared with using the results of a single semen analysis and additi...

OBJECTIVE To determine the postoperative instruction compliance rate in men undergoing bilateral vasectomy. DESIGN Retrospective chart review. SETTING Private practice urological office. PATIENT(S) The records of all patients undergoing vasectomy were reviewed to determine the rate of compliance with postvasectomy follow-up instructions. It is our policy to have the patient continue to us...

Background Chromomycin A3 (CMA3) staining has been used to assess protamine deficiency. The aim of this study was to determine credibility of CMA3 along with semen parameters for assessment of fertility potential. MaterialsAndMethods Semen analysis and CMA3 staining were carried out on 234 fertile and 178 subfertile individuals. Semen analysis was assessed according to WHO criteria. Protamine d...

OBJECTIVES Possible relationship between semen quality (semen volume, sperm concentration and sperm motility) and parabens exposure was investigated in male partners of couples who visited a gynecology clinic in Tokyo for infertility consultation (n = 42, 36.8 ± 5.4 years). METHODS Semen parameters were measured according to WHO guideline at the clinic, and urinary methyl- (MP), ethyl- (EP), ...

background: chromomycin a3 (cma3) staining has been used to assess protamine deficiency. the aim of this study was to determine credibility of cma3 along with semen parameters for assessment of fertility potential. materials and methods: semen analysis and cma3 staining were carried out on 234 fertile and 178 subfertile individuals. semen analysis was assessed according to who criteria. protami...

the objective of this study was to explore the reproductive consequences of using sex-sorted semen on sex ratio, conception rate and reproductive disorders (dystocia, abortion, stillbirth) in holstein heifers. reproduction performances records which were collected during 2006 to 2013 from 4 large dairy herds in isfahan province of iran were used and analyzed by genmod procedure of sas software....

CONTEXT The risk of paternity after vasectomy is rare but still exists. Overall failure to achieve sterility after vasectomy occurs in 0.2 to 5.3% of patients due to technical failure or recanalization. The objective of this report was to describe a rare but notable case of proven paternity in which the semen analyses had not given evidence of spermatozoa. CASE REPORT A 44-year-old vasectomiz...