The aim of the study was to determine the semen parameters of a proven fertile population and to compare these parameters with that of a subfertile group in the same region. Sixty-nine fertile male patients were studied and compared with 93 patients recruited at an infertility clinic. A sub-sample of patients was matched according to age. Sixty-one were studied in the fertile group and 62 in the infertile group. Receiver operator characteristics analysis was done on the sub-sample. The threshold value of the progressive motility was 42% and it was the best parameter with sperm morphology to distinguish between the two groups. At 69% sensitivity and 67% specificity the sperm morphology threshold was 12% normal forms. If the positive and negative predictive value was used to screen the general population to identify the subfertile group, a 5% normal morphology threshold was indicated with 14% progressive motility, 30% motility and a concentration of 9x10(6)/ml or lower. The negative predictive values of the parameters were good and achieved 90% in most cases. The sensitivity of the semen parameters at the reported thresholds was poor and indicated a large overlap in the distributions of these variables in the fertile and infertile groups. To distinguish between the fertile and subfertile population, the most significant finding of this study was the progressive motility with a threshold level of 14%. The cut-off value of the sperm morphology (5%) in vivo was consistent with the previous publications in assisted reproduction programmes for sperm morphology.

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To determine predictive values of routine semen analysis, sperm morphology evaluation using strict criteria and DNA status for in-vitro fertilization (IVF), 66 consecutive couples undergoing IVF in a university hospital IVF programme were prospectively investigated. Semen samples from 66 men were evaluated by routine semen analysis, morphology evaluation using strict criteria and acridine orange staining for determination of DNA status. A new technique is described for acridine orange scoring which consisted of evaluation of two smears per case, with and without heat treatment. Resistance to heat-provoked denaturation was determined by the difference between two evaluations. A logistic regression model was built and receiver operating characteristic curves were constructed to determine the threshold values and to compare diagnostic properties. Morphology evaluation using strict criteria and concentration of progressively motile spermatozoa were found to be the principal parameters determining the sperm fertilizing capacity in vitro. The logistic regression model composed of morphology evaluation using strict criteria and acridine orange score had a powerful diagnostic capability for prediction of fertilization in vitro.

Where there is no distortion of the endo-myometrial junction, the effect of an intramural leiomyoma on reproductive performance is controversial. The current study compared the performance of patients having a single leiomyoma and intact endometrium confirmed by hysteroscopy (study group) with that of controls having intact endometrium alone in intracytoplasmic sperm injection (ICSI) cycles. A total of 61 consecutive infertile patients were retrospectively enrolled into the study group from a computerized IVF database. The control group consisted of 444 age-matched patients undergoing ICSI-embryo transfer without any endocervical or intrauterine pathology confirmed by both transvaginal ultrasonography and office hysteroscopy. The baseline characteristics, performance of ovarian stimulation and embryological data were similar between the two groups. The clinical pregnancy per embryo transfer (36 versus 38%) and implantation rate (20 versus 19%) were also comparable. Although the miscarriage rate tended to be higher in the leiomyoma group (27 versus 19%), the difference did not reach statistical significance. In conclusion, in the presence of intact endometrium, a single intramural leiomyoma does not seem to have a deleterious effect on ICSI cycles. Before ICSI is attempted, hysteroscopy may be useful for ruling out distortion of the endometrium due to leiomyoma in selected cases.