Does ovarian stimulation benefit ovulatory women undergoing therapeutic donor insemination?

OBJECTIVE: To compare clinical and ongoing pregnancy after natural cycle (NC) intrauterine insemination (IUI) versus ovarian stimulation (OS) IUI in ovulatory women undergoing therapeutic donor insemination (TDI). DESIGN: Retrospective cohort. SETTING: Single infertility center. PATIENT(S): A total of 76,643 IUI cycles in patients treated with intrauterine insemination were examined. Women undergoing TDI in the absence of diagnosed female factor infertility were included. INTERVENTION(S): NC TDI or OS TDI with either clomiphene citrate or letrozole. MAIN OUTCOME MEASURE(S): Clinical and ongoing pregnancies were analyzed by generalized estimating equations adjusting for age, body mass index, total motile sperm at time of insemination and cycle number. Ongoing multiple gestations were examined as a secondary outcome. RESULT(S): Six thousand one hundred ninety-two TDI cycles from 2,343 patients (711 patients without repeated IUI cycles) met inclusion criteria and were available for analysis (3,837 NC and 2,355 OS). There was no difference in mean age between the two groups (NC, 34.2 years vs. OS, 34.3 years). Probability of clinical and ongoing pregnancy was higher in the OS cohort compared with the NC cohort (OS, 22.4% vs. NC, 18.7% and OS, 15.4% vs. NC, 14.9%, respectively). However, OS significantly increased ongoing multiple gestations (OS, 10.8% vs. NC, 2.4%). CONCLUSION(S): Ovarian stimulation in TDI cycles resulted in a <4% increase in clinical and <1% increase in ongoing pregnancy, and more than fourfold increase in ongoing multiple gestations. Natural cycle IUI should be considered as a first-line treatment for ovulatory women who need donor insemination.

Is anti-Müllerian hormone a marker of acute cyclophosphamide-induced ovarian follicular destruction in mice pretreated with cetrorelix?

OBJECTIVE: To define whether anti-Müllerian hormone (AMH) may be a marker of acute cyclophosphamide (CTX)-induced germ cell destruction in mice pretreated with the GnRH antagonist, cetrorelix. DESIGN: Controlled, experimental study. SETTING: Research laboratory in a federal research facility. ANIMAL(S): Balb/c female mice (6 weeks old). INTERVENTION(S): Mice were treated with GnRH antagonist (cetrorelix) or saline for 15 days followed by 75 mg/kg or 100 mg/kg of CTX or saline control on day 9. MAIN OUTCOME MEASURE(S): Number of primordial follicles (PMF), DNA damage, AMH protein expression, and AMH serum levels. RESULT(S): Ovaries in mice pretreated with cetrorelix had significantly more PMFs and reduced DNA damage compared with those exposed to CTX alone. Immunohistochemical staining for AMH expression and serum AMH levels did not differ significantly between treatment groups. CONCLUSION(S): Cetrorelix protected PMFs and reduced DNA damage in follicles of mice treated with CTX, but AMH levels in tissue and serum did not correlate with germ cell destruction. Further research is needed to determine the mechanism responsible for the protective effects on PMF counts observed with cetrorelix.

Proficiency in oocyte retrieval: how many procedures are necessary for training?

OBJECTIVE: To determine a minimum number of procedures required for proficiency in oocyte retrieval and to characterize skill acquisition. DESIGN: Retrospective analysis. SETTING: Reproductive endocrinology and infertility fellowship training program. SUBJECT(S): Fellows in training from 2005 to 2007 and 2008 to 2010. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Proficiency scores were calculated by dividing the number of oocytes retrieved by oocytes expected. The 2005 to 2007 trainees were grouped and proficiency scores calculated as an average during specific points in their training. The 2008 to 2010 trainees were compared individually to determine differences in individual skill acquisition. RESULT(S): A greater number of oocytes were retrieved than expected, 8.6 versus 7.6. A relatively lower proficiency score was noted during the first 10 trainee aspirations (proficiency score=1.1) compared with subsequent aspirations (proficiency score=1.25 for retrievals 11-20, proficiency score=1.21 for retrievals 21-30 and >31). When individual fellows' scores were calculated, the majority achieved proficiency by 20 aspirations, and all but one trainee achieved the mean staff proficiency score by 50 retrievals. CONCLUSION(S): Regardless of a trainee's initial proficiency in oocyte retrieval, there were no statistically significant differences in the learning curve between trainees. The majority of individual fellows in training demonstrate proficiency in follicular aspirations within 20 procedures; however, a minority may require 50 procedures to achieve the proficiency of an attending physician.

Does dilation and curettage versus expectant management for spontaneous abortion in patients undergoing in vitro fertilization affect subsequent endometrial development?

In in vitro fertilization patients, treatment of spontaneous abortion with dilation and curettage (D&C) versus expectant management has no long-term effect on subsequent endometrial development, as measured by change in endometrial thickness. A transient reduction in endometrial thickness was found within the first 6 months after D&C, which is a novel finding, but it is likely to have little or no effect on pregnancy rates given the small absolute effect on endometrial thickness.