Clarifying the relationship between total motile sperm counts and intrauterine insemination pregnancy rates.

To study the relationship between postwash total motile sperm count (TMSC) and intrauterine insemination (IUI) outcomes. Retrospective review SETTING: Large fertility clinic PATIENT(S): A total of 92,471 insemination cycles from 37,553 patients were included in this study. All stimulated clomiphene citrate, letrozole, and/or injectable gonadotropin IUI cycles performed at a single institution from 2002 through 2018 were reviewed. Generalized estimating equations (GEE) analysis was used to account for multiple cycles by individual patients and to adjust for female partner age, body mass index, and stimulation protocol. Successful clinical pregnancy was defined as ultrasound confirmation of an intrauterine gestational sac with fetal cardiac activity. A total of 92,471 insemination cycles were available to evaluate the relationship between postwash TMSC and clinical pregnancy. Pregnancy rates were highest with TMSC of ≥9 × 106 and declined gradually as TMSC decreased. Complete data for the adjusted GEE analysis were available for 62,758 cycles. Adjusted GEE analysis among cycles with TMSC of ≥9 × 106 (n = 46,557) confirmed that TMSC in this range was unrelated to pregnancy. Conversely, TMSC was highly predictive of pregnancy (Wald χ2 = 39.85) in adjusted GEE analysis among cycles with TMSC of <9 × 106 (n = 16,201), with a statistically significant decline. IUI pregnancy is optimized with TMSC of ≥9 × 106, below which the rates gradually decline. Although rare, pregnancies were achieved with TMSC of <0.25 × 106. Since the decline in pregnancy is gradual and continuous, there is no specific threshold above which IUI should be recommended. Rather, these more specific quantitative predictions can be used to provide personalized counseling and guide clinical decision making.

Muthigi A ，Jahandideh S ，Bishop LA ，Naeemi FK ，Shipley SK ，O'Brien JE ，Shin PR ，Devine K ，Tanrikut C ... -  《-》

How low is too low? Postwash total motile sperm count effect on pregnancy outcomes in intrauterine insemination.

Mathes M ，Kastrick E ，Sayles H ，Gustin S ... -  《-》

The Effects of Total Motile Sperm Count on Spontaneous Pregnancy Rate and Pregnancy After IUI Treatment in Couples with Male Factor and Unexplained Infertility.

Hajder M ，Hajder E ，Husic A 《-》

Is controlled ovarian stimulation and insemination an effective treatment in older women with male partners with decreased total motile sperm counts?

To assess the effect of the total motile sperm counts (TMSC) on the success of controlled ovarian stimulation (COH) and intra-uterine insemination (IUI) in women 38-42 years of age. A database of all women aged 38-42 years who underwent IUI with stimulation at a University Reproductive Centre between 2009 and 2018 inclusive was developed. Including stimulation with clomiphene citrate, letrozole or gonadotropins and divided into TMSC 5.00-10.0 mil and < 5.00 mil. Statistics were compared with multivariate logistic regression, t tests or Chi-squared tests. A total of 397 cycles of IUI in 397 patients were included, of which, 190 cycles with TMSC 5.00-10.0 and 207 cycles with TMSC < 5.00. There were no statistical differences in the baseline characteristics between the two groups including: age (P = 0.2), gravidity (P = 0.7), parity (P = 0.6), basal FSH (P = 0.2), basal E2 (P = 0.4), antral follicular count (P = 0.5) and the number of mature follicles stimulated (P = 0.2). As expected, TMSC was 7.6 ± 1.5 mil in the first group and 2.4 ± 1.6 mil in the second group (P < 0.0001). The clinical pregnancy rate per cycle in the 5.01-10.00 TMSC group was 9.5 vs. 3.4% when TMSC < 5.00 (P = 0.01). When evaluating only women 40-42 years of age (99 women in the 5.00-10.00 TMSC group and 95 in the group of TMSC < 5.00); the pregnancy rates were not statistically different between the two groups (7 vs. 7.3%, P = 1), nor was the clinical pregnancy rate (5 vs. 6.3%, P = 0.7). Women 38-39 years of age have poorer outcomes at COH/IUI when TMSC < 5 million than if it is 5-10 million. Once a woman is 40 years of age, this effect is lost. With TMSC 5-10 million, women 38-39 years of age have respectable outcomes at COH/IUI. Clinical pregnancy rates are very low in women 40 years of age with TMSC ≤ 10 million or 38-39 years old with TMSC < 5 million and other treatments should be offered.

Kadour-Peero E ，Steiner N ，Frank R ，Al Shatti M ，Ruiter J ，Dahan MH ... -  《-》

Comparison of pregnancy rates in pre-treatment male infertility and low total motile sperm count at insemination.

Xiao CW ，Agbo C ，Dahan MH 《-》