BACKGROUND: The effect of fibroids that do not distort the endometrial cavity on pregnancy rate (PR) and implantation rate (IR) is controversial. Use of oocyte donor-derived embryos offers an ideal patient population to study the effect of fibroids in patients utilizing assisted reproductive technologies (ARTs).
METHODS: We conducted a retrospective cohort study of patients undergoing oocyte donor recipient (ODR) IVF cycles at two tertiary care fertility centres. We examined medical records for the presence of non-cavity-distorting fibroids and evaluated subsequent PR and IR.
RESULTS: Three hundred and sixty-nine patients, 94 with fibroids, underwent oocyte donor recipient transfer cycles with fresh embryos. There was no statistical difference in IR (36 versus 38%) or clinical PR (47 versus 54%) between patients with or without fibroids. Neither the location (subserosal versus intramural) and the presence of multiple myomas nor the size of the myomas affected outcomes. Fibroids were more likely to be present in patients with increasing recipient age.
CONCLUSIONS: Clinical PR and IR are not affected by the presence of non-cavity-distorting leiomyomata. This evidence does not support myomectomy before ART in patients with asymptomatic fibroids that do not significantly distort the endometrial cavity or cause abnormal uterine bleeding.
Questo studio prospettico, controllato è stato effettuato al fine di valutare se la posizione dei fibromi uterini possono influenzare la funzione riproduttiva nelle donne e se la rimozione del fibroma prima del concepimento può migliorare il tasso di gravidanza e la manutenzione gravidanza. Abbiamo esaminato 181 donne affette da fibromi uterini che aveva cercato di concepire per almeno 1 anno senza successo. Le principali misure di esito erano il tasso di gravidanza e il tasso di aborto spontaneo. Tra i pazienti sottoposti a miomectomia, i tassi di gravidanza ottenuti sono stati il 43,3% in caso di sottomucosa, 56,5% in caso di intramurale, 40,0% in caso di sottomucosa, intramurale e al 35,5% in caso di fibromi uterini intramurali-sottosierosa, rispettivamente. Tra i pazienti che non sono stati sottoposti a trattamento chirurgico, i tassi di gravidanza ottenuti sono stati del 27,2% nelle donne con sottomucosa, 41,0% nelle donne con intramurale, 15,0% nelle donne con sottomucosa, intramurale e 21,43% nelle donne con fibromi uterini intramurali-sottosierosa, rispettivamente . Sebbene i risultati non erano statisticamente significativo nel gruppo delle donne con fibromi intramurali e intramurale-sottosierosa, questo studio conferma il ruolo importante della posizione del fibroma uterino in sterilità nonché l'importanza di rimozione fibromi prima del raggiungimento di una gravidanza, di migliorare sia le possibilità di fecondazione e manutenzione gravidanza.
OBJECTIVE: To evaluate the impact of myomectomy on in vitro fertilization-embryo transfer (IVF-ET) and oocyte donation cycle outcome.
DESIGN: Retrospective case-controlled study of consecutive fresh IVF-ET and oocyte donation patients during a 2-year interval.
SETTING: Private assisted reproductive technology (ART) center.
PATIENT(S): Patients with submucosal leiomyomata resected hysteroscopically (group A: 15 oocyte donor recipients; group 1 = 31 IVF-ET patients) and those with intramural components or strictly intramural leiomyomata that distorted or impinged upon the endometrial cavity resected at laparotomy (group B = 26 oocyte donor recipients; group 2 = 29 IVF-ET patients).
INTERVENTION(S): Precycle hysteroscopic or abdominal myomectomy and subsequent fresh IVF-ET or oocyte donation.
MAIN OUTCOME MEASURE(S): Results of controlled ovarian hyperstimulation as well as ongoing pregnancy and implantation rates were evaluated in comparison with contemporaneous patient groups without such lesions (group C = 552 oocyte donor recipients; group 3: 896 IVF-ET patients).
RESULT(S): As would be expected, the mean number and size of leiomyomata were significantly larger in patients who underwent abdominal myomectomy. However, neither ongoing pregnancy nor implantation rates were significantly different in comparison with controls among either oocyte donor recipients (group A: 86.7%, 57.8%; group B: 84.6%, 55.2%; group C 77%, 49.1%). The findings were similar for those undergoing IVF-ET in comparison with controls (group 1: 61%, 24%; group 2: 52%, 26%; group 3: 53%, 23%).
CONCLUSION(S): Precycle resection of appropriately selected clinically significant leiomyomata results in IVF-ET or oocyte donation cycle outcomes that are similar to controls.
To evaluate the influence of inner myometrium fibroids (myomas) on the outcome of IVF cycles, a retrospective agematched controlled study was performed at SISMeR Reproductive Medicine Unit. The study group included 129 IVF/intracytoplasmic sperm injection cycles in 75 patients with one or more intramural and/or submucosal fibroids, while the control group consisted of 129 cycles in 127 patients without fibroids. The two groups were similar for mean oestradiol concentration at human chorionic gonadotrophin administration (1205.16 +/- 874 versus 1395 +/- 821 pg/ml), mean number of transferred embryos (2.02 +/- 0.4 versus 2.14 +/- 0.6) and clinical pregnancy rate (34.9 versus 41.1%). Conversely, the implantation rate was significantly lower in the study group (18.0%) than in the control group (26.5%; chi(2) = 4.81, P < 0.05), whereas the rate of spontaneous abortion demonstrated an opposite trend (40 versus 18.9%; chi(2) = 4.34, P < 0.05). Further research should be aimed at classifying fibroids on the basis of their location, especially when they are positioned in the junctional zone of the myometrium. Whether this classification will be superior in predicting the impact of fibroids on the reproductive outcome should be elaborated in a large multicentric study.
Uterine fibroids have been reported in 27% of infertile women, and 50% of women with unexplained infertility become pregnant after myomectomy. The age at which a first pregnancy occurs is increasing from the thirties to the forties. This increase and the recurrence rate of leiomyomas from 15 to 30% points to the effect of myomas on the infertility. Mechanisms by which myomas may cause infertility are abnormal uterine contractility, elongation of the uterine cavity, and distortion of uterine vascularization. Surgery may have beneficial or adverse effects without clear data on its effect on the assisted reproductive technology (ART) procedures. The present study was undertaken to establish the impact of surgical removal of myomas on fertility and infertility of patients undergoing ART procedures. Patients who underwent surgical removal of myomas before in vitro fertilization (Group A) had a cumulative success rate of 33% for one to three procedures (28 clinical pregnancies in 84 patients) and delivery rate of 25% (21 live births in 84 patients). Patients who underwent in vitro fertilization without previous surgery (Group B) had a 15% clinical pregnancy rate (13 pregnancies in 84 patients) (P < 0.05) and 12% delivery rate (10 deliveries in 84 pregnancies) (P < 0.05). Abortion rates were 7% (8 deliveries in 84 patients) and 4% (3 deliveries in 84 patients) in Groups A and B, respectively. This study confirms the beneficial effect of surgical removal of fibroids before undergoing ART procedures.
OBJECTIVE: To further evaluate the effects of intramural and subserosal uterine fibroids on the outcome of IVF-ET, when there is no compression of the endometrial cavity.
DESIGN: Retrospective, matched-control study from January 2000 to October 2001.
SETTING: Private IVF center.
PATIENT(S): Two hundred forty-five women with subserosal and/or intramural fibroids that did not compress the uterine cavity (fibroid group) and 245 women with no evidence of fibroids anywhere in the uterus (control group).
INTERVENTION(S): In vitro fertilization-intracytoplasmic sperm injection (IVF-ICSI) cycles.
MAIN OUTCOME MEASURE(S): The type of fibroid (intramural, subserosal), number, size (cm), and location of intramural leiomyomas (fundal, corpus) were recorded. Outcomes of IVF-ICSI cycles were compared between the two groups.
RESULT(S): There was no correlation between location and number of uterine fibroids and the outcomes of IVF-ICSI. Patients with subserosal or intramural fibroids <4 cm had IVF-ICSI outcomes (pregnancy, implantation, and abortion rates) similar to those of controls. Patients with intramural fibroids >4.0 cm had lower pregnancy rates than patients with intramural fibroids <or=4.0 cm. There were no statistical differences related to delivery rates (31.5% vs. 32%, respectively) between all patients with fibroids and controls. Premature delivery rates for singleton gestations were 10% vs. 8%, respectively, in all patients with fibroid and controls.
CONCLUSION(S): Patients having subserosal or intramural leiomyomas of <4 cm not encroaching on the uterine cavity have IVF-ICSI outcomes comparable to those of patients without such leiomyomas. Therefore, they might not require myomectomy before being scheduled for assisted reproduction cycles. However, we recommend caution for patients with fibroids >4 cm and that such patients be submitted to treatment before they are enrolled in IVF-ICSI cycles. Whether or not women with fibroids > 4 cm would benefit from fibroid treatment remains to be determined.
Our objective was to assess the effects of intramural and subserous fibroids on intracytoplasmic sperm injection (ICSI) in a retrospective case-control study of 108 women with uterine fibroids and 324 controls. The fibroids were located and measured by transvaginal ultrasound performed just before the ICSI cycle and all patients had normal endometrial scan. Seventy-three women had intramural and 35 women had subserous fibroids and the maximum diameter in any patient ranged from 0.5-10 cm. The number of fibroids in a patient ranged from 1-8. The first cycle outcome was compared with an age and body mass index matched 324 ICSI patients/cycles. All couples had male factor infertility. The ICSI cycles of patients with intramural and subserous fibroids were comparable in terms of the days of ovarian stimulation, the total dose of gonadotropin used, estradiol level on day of hCG administration, the number of metaphase II oocytes retrieved, fertilization and cleavage rates, number and quality of embryos developed and transferred. The implantation and clinical pregnancy rates were similar. We conclude that the presence of intramural and subserous fibroids does not adversely effect clinical pregnancy and implantation rates in patients undergoing ICSI.
BACKGROUND: There is no consensus as to whether uterine fibroids have any adverse effects on the outcomes of assisted reproduction treatment. This prospective study compared implantation/pregnancy rates of women with and without fibroids undergoing IVF-embryo transfer and measured uterine blood flow indices of the fibroid group.
METHODS: Patients who had fibroids that, during transvaginal scanning, were found to be not distorting the endometrial lining were placed in the fibroid group, while patients with normal uteri were controls. Those with previous myomectomy or pedunculated subserosal fibroids only were excluded. All received a standard ovarian stimulation regimen. Doppler ultrasound examinations of uterine arteries were carried out in the fibroid group prior to oocyte retrieval.
RESULTS: Similar implantation/pregnancy rates, multiple pregnancy rates and pregnancy outcomes were noted in both groups. In the fibroid group, significantly lower pulsatility index (PI) and resistance index (RI) of the right uterine artery and the average of right and left uterine arteries were found in those failing to conceive than in those patients who subsequently conceived (P < 0.001).
CONCLUSION: The presence of fibroids not distorting the endometrial lining does not adversely affect implantation and pregnancy rates during IVF-embryo transfer. Significantly lower uterine artery PI and RI were found in non-pregnant women with fibroids than in their pregnant counterparts.
BACKGROUND: Several studies have reported that the presence of intramural fibroids affects conception following IVF. We attempted to corroborate or refute the conclusions relating to IVF and leiomyomas of the aforementioned studies.
METHODS: Women with small intramural leiomyomata (< or = 5 cm) discovered on initial pelvic sonographic studies performed in preparation for IVF were prospectively matched by age, with the next patient of the same age undergoing IVF who did not demonstrate fibroids (controls).
RESULTS: Though no significant differences were found in outcome when comparing these two groups, there was a distinct trend for lower live delivery rates and higher miscarriage rates.
CONCLUSIONS: These data support the conclusions of the only other prospective matched control study evaluating similar factors, i.e. that small intramural fibroids can negatively affect IVF outcome. Nevertheless, we think that a multicentre study should be conducted first before evaluating whether myomectomy improves outcome or not.
The effect of fibroids that do not distort the endometrial cavity on pregnancy rate (PR) and implantation rate (IR) is controversial. Use of oocyte donor-derived embryos offers an ideal patient population to study the effect of fibroids in patients utilizing assisted reproductive technologies (ARTs).
METHODS:
We conducted a retrospective cohort study of patients undergoing oocyte donor recipient (ODR) IVF cycles at two tertiary care fertility centres. We examined medical records for the presence of non-cavity-distorting fibroids and evaluated subsequent PR and IR.
RESULTS:
Three hundred and sixty-nine patients, 94 with fibroids, underwent oocyte donor recipient transfer cycles with fresh embryos. There was no statistical difference in IR (36 versus 38%) or clinical PR (47 versus 54%) between patients with or without fibroids. Neither the location (subserosal versus intramural) and the presence of multiple myomas nor the size of the myomas affected outcomes. Fibroids were more likely to be present in patients with increasing recipient age.
CONCLUSIONS:
Clinical PR and IR are not affected by the presence of non-cavity-distorting leiomyomata. This evidence does not support myomectomy before ART in patients with asymptomatic fibroids that do not significantly distort the endometrial cavity or cause abnormal uterine bleeding.
