Correlations between antral follicle count and ultrasonographic ovarian parameters and clinical variables and outcomes in IVF cycles

Aims: To assess the correlation between the antral follicle count (AFC) and other ultrasonographic parameters and clinical variables in in vitro fertilization (IVF) cycles. Methods: Pretreatment ultrasonographic evaluation included AFC (total), large (5–10 mm) and small (2–4 mm) antral follicles, ovarian volume, and ovarian Doppler indices. Data were prospectively uploaded and subsequently analysed in relation to IVF cycle results. Results: The study included 128 women (128 cycles). Analysis of body mass index (BMI) yielded a weak significant correlation with large (5–10?mm) AFC but not with other sonographic variables. AFC was significantly correlated with patient age, ovarian volume, number of retrieved oocytes, total dose of used gonadotropins, peak estradiol, number of top-quality embryos, and number of frozen embryos and marginally correlated with number of aspirated immature oocytes. Lower large (5–10?mm) AFC was the only ovarian parameter associated with oral contraception pretreatment compared to nontreatment, even after adjustment for age and BMI. There was no difference in any of the parameters between short and long IVF cycles. Conclusions: BMI is only weakly correlated with AFC. Pretreatment with oral contraceptives may be associated with lower AFC. Pretreatment with gonadotropin-releasing hormone agonist (long protocol) does not alter the ultrasonographic ovarian parameters.     

Reproductive aging and variability in the ovarian antral follicle count: application in the clinical setting

OBJECTIVE: To determine the extent of intercycle and interobserver variability in antral follicle (AF) count and their impact on stimulation quality in IVF. DESIGN: Prospective evaluation of the impact on AF count of GnRH agonist down-regulation and interobserver variability. Retrospective evaluation of intercycle variability in AF count. SETTING: University ART clinic. PATIENT(S): Twenty subjects were used to evaluate the effect of GnRH agonist down-regulation upon AF count; six of whom were used to evaluate interobserver variability. Fifty patients experiencing two or three cycles of IVF within a 1-year interval. INTERVENTION(S): Transvaginal ultrasound exams before and after down-regulation with a GnRH agonist. Videotaped day-3 transvaginal ultrasound exams. MAIN OUTCOME MEASURE(S): [1] Intercycle and interobserver variability in antral follicle count. [2] Oocytes retrieved, peak estradiol, gonadotropin dose, duration of stimulation and cancellation rates. RESULT(S): There is moderate intercycle and interobserver variability in AF counts. GnRH agonist down-regulation does not significantly change AF count. In infertility patients undergoing IVF, paired analysis between the low- and high-AF count cycles did not show a difference in quality of stimulation or cycle cancellation rates. CONCLUSIONS: Within an individual patient, higher AF count in a given cycle was not predictive of better stimulation compared with the case of a lower count cycle.     

The impact of unilateral salpingectomy on antral follicle count and ovarian response in ICSI cycles: comparison of contralateral side

Objective: To determine the impact of salpingectomy on the ovarian reserve. Comparisons are made with the contralateral side in patients with unilateral salpingectomy undergoing intracytoplasmic sperm injection (ICSI) cycles.

Study design: Patients under 40 with unilateral salpingectomy and without history of ovarian surgery were selected for the multicentre retrospective study. Women with bilateral salpingectomy and history of endometriosis were excluded from the study. Antral follicle count, controlled ovarian hyperstimulation (COH) parameters and number of collected oocytes were the main outcome measures of the study.

Results: A total of 56 patients were eligible for this study. The mean age of the patients was 31.6?±?4.7 years. The reasons for the salpingectomy were hydrosalpinx (39.3%, n?=?22) and ruptured ectopic pregnancy (60.7%, n?=?34). The ongoing pregnancy rate per embryo transfer was 30.6%. There was no statistically significant difference between the operated and non-operated sides in antral follicle count (AFC), follicles ≥?17?mm and 10–17?mm on day of human chorionic gonadotrophin (hCG), or number of aspirated oocytes. In the subgroup analysis, AFC, number of growing follicles on day of hCG and number of collected oocytes were comparable between the ectopic pregnancy group and hydrosalpinx group.

Conclusion: The study suggests that salpingectomy is not associated with detrimental effects on AFC and ovarian response.     

Intercycle variabilities of basal antral follicle count and ovarian volume in subfertile women and their relationship to reproductive aging: A prospective study

Background.?Reproducibility is an important issue when using tests for estimating ovarian reserve and counseling patients. However, little is known about the intercycle variabilities of basal antral follicle count and ovarian volume. In this prospective study, we analysed the intercycle variabilities of the antral follicle count and ovarian volume, and compared them with those of other basal ovarian reserve tests in subfertile patients.

Method.?Fifty-two ovulatory and infertile women were followed for two consecutive spontaneous cycles. The antral follicle count, ovarian volume, serum follicle stimulating hormone and estradiol levels were determined on day 3 of both cycles. Limits of agreement between two measurements were determined.

Results.?Limits of agreement were –?6.9 and 6.5 for the antral follicle count, and –?8.3 and 8.6 for the ovarian volume. These degrees of variation corresponded to a range of 1.30 and 1.45 times their means for the ovarian volume and antral follicle count, respectively. The variability in the antral follicle count was greater in women who were younger than 24.5 years than in those who were older.

Conclusions.?Intercycle variabilities of the antral follicle count and ovarian volume were clinically significant. More variation was observed in the antral follicle count of young infertile patients. Therefore, a low antral follicle count in young, infertile, but ovulatory women should be cautiously interpreted. This may not reflect a low ovarian reserve, and these women may have a high antral follicle count in the next cycle.     

Measurement of antral follicle count in patients undergoing in vitro fertilization treatment: results of a worldwide web-based survey

Purpose

The purpose of the present study was to identify trends in the therapeutic approaches used to measure antral follicle count (AFC) in patients undergoing in vitro fertilization (IVF) treatment worldwide.

Methods

A retrospective evaluation utilizing the results of a web-based survey, IVF-Worldwide (www.IVF-Worldwide.com), was performed.

Results

Responses from 796 centers representing 593,200 cycles were evaluated. The majority of respondents (71.2 %) considered antral follicle count as a mandatory part of their practice with most (69.0 %) measuring AFC in the follicular phase. Most respondents (89.7 %) reported that they would modify the IVF stimulation protocol based on the AFC. There was considerable variation regarding a limit for the number of antral follicles required to initiate an IVF cycle with 46.1 % designating three antral follicles as their limit, 39.9 % selecting either four or five follicles as their limit, and 14.0 % reporting a higher cutoff criteria. With respect to antral follicle size, 61.5 % included follicles ranging between 2 and 10 mm in the AFC. When asked to identify the best predictor of ovarian hyper-response during IVF cycles, AFC was selected most frequently (49.4 %), followed by anti-Mullerian hormone level (42.7 %). Age was selected as the best predictor of ongoing pregnancy rate in 81.7 % of respondents.

Conclusions

While a large proportion of respondents utilized AFC as part of their daily practice and modified IVF protocol based on the measurement, the majority did not consider AFC as the best predictor of ongoing pregnancy rate.     

Assessment of ovarian reserve based on hormonal parameters,ovarian volume,and antral follicle count in women with familial Mediterranean fever

Objective

To evaluate ovarian reserve in women with familial Mediterranean fever (FMF).

Study design

Thirty women with FMF (20–29 years) and thirty healthy controls (20–29 years) were admitted to this study. Basal serum levels of follicle-stimulating hormone (FSH), oestradiol (E2), luteinizing hormone (LH) and inhibin B were measured on cycle day 3. All participants underwent transvaginal ultrasonographic examination on the third day of their menstrual cycle for the determination of ovarian volume (OV) and total antral follicle count (AFC).

Results

Women with FMF had significantly higher concentrations of FSH, LH and E2 than healthy controls. Total AFC was significantly lower in women with FMF than in healthy controls. OV was also lower in the FMF group but there was no statistically significant difference in OV between the groups. Age was negatively associated with FSH and LH. Inhibin B was found to be negatively correlated with LH and OV.

Conclusions

In this preliminary study, the first in FMF patients, we found that ovarian reserve was reduced in women with FMF compared with healthy controls. FMF may affect the ovarian reserve but the mechanism of this effect is unclear.     

Impact of laparoscopic cystectomy of endometriotic and non-endometriotic cysts on ovarian volume,antral follicle count (AFC) and ovarian doppler velocimetry

Objective: To evaluate the effect on ovarian reserve and blood flow of unilateral laparoscopic stripping of endometriotic versus non-endometriotic cysts.

Design: Prospective observational study.

Setting: Tertiary university gynecology unit.

Patients: During the study period, 71 subjects underwent the first laparoscopic surgery for removal of a monolateral benign ovarian cyst.

Interventions: Trans-vaginal ultrasound scans of the pelvis about six months after surgery.

Main outcome measures: Ovarian volume, Antral Follicle Count (AFC) and Resistance Index (RI) of ovarian artery of the operated and the contralateral ovary.

Results: Among 71 cysts, 39.4% were endometriotic and 60.6% non-endometriotic benign cysts. All the procedures were performed by the same experienced surgeons with a standardized technique. No major complications were reported during surgery. The mean (±SD) age and BMI of women were 31.0?±?6.8 years and 24.2?±?3.3?kg/m², respectively. Mean diameter of the removed cysts was smaller for endometriotic than non-endometriotic cysts (4.35?±?1.77?cm versus 6.33?±?3.71?cm, p?=?0.046). In comparison to non-operated, volume of the operated ovary was significantly lower and with a reduced AFC, with no difference between endometriotic and non-endometriotic cysts (?2.41?±?2.35 versus ?2.00?±?2.23?cm³, p?=?0.496) (?3.45?±?3.07 versus ?2.43?±?1.95, p?=?0.11). Ovarian artery RI was higher in the operated ovary with no difference between endometriotic and non-endometriotic cysts (0.19?±?0.14 versus 0.14?±?0.10, p?=?0.455). The difference in ovarian volume (r?=?0.178), AFC (r?=?0.094) and RI (r?=?0.079) between operated and non-operated ovary was not dependent on the diameter of the removed cyst.

Conclusion: Ovarian surgery is associated with a decline of ovarian reserve, independently on the histological type and the diameter of the removed cyst.     

Impact of repeated antral follicle counts on the prediction of poor ovarian response in women undergoing in vitro fertilization

OBJECTIVE: To study the value of a single antral follicle count and the additional value of repeated counts in different cycles for the prediction of poor ovarian response in IVF. DESIGN: Prospective. SETTING: Tertiary fertility center. PATIENT(S): One hundred twenty women undergoing their first IVF cycle. INTERVENTION(S): Measurement of the number of antral follicles on cycle day 3 in two spontaneous cycles.Ovarian response. RESULT(S): A single antral follicle count is clearly predictive of poor ovarian response and there is good agreement between repeated measurements in subsequent cycles (area under the receiver operating characteristic curve [ROC(AUC)]; cycle 1: 0.87, cycle 2: 0.85). In a logistic regression analysis, information obtained after the second cycle contributed significantly to the prediction of poor response by the antral follicle count of the first cycle. The predictive accuracy of the highest of two counts (ROC(AUC) 0.89) was slightly better than that of each single count. The predictive model with the highest count yielded slightly higher values of specificity and positive predictive value. Sensitivity, negative predictive value, and error rates were slightly lower. CONCLUSION(S): A single antral follicle count is a good predictor of poor ovarian response in IVF. Although the impact of a second antral follicle count on ovarian response predictions in IVF is statistically significant, clinical relevance is very limited. Repeating an antral follicle count in a subsequent cycle is not recommended.     

Combining cycle day 7 follicle count with the basal antral follicle count improves the prediction of ovarian response

OBJECTIVE: To analyze the predictive value of cycle day 7 follicle count (CD7-FC) for poor ovarian response during IVF in women down-regulated with a luteal start of GnRH analogue (long protocol). DESIGN: A retrospective analysis. SETTING: University hospital. PATIENT(S): Ninety-one consecutive IVF cycles of 82 subjects. INTERVENTION(S): Basal levels of FSH and E2 were determined in the spontaneous cycle before the IVF cycle. During the IVF cycle, the number of basal and CD7 follicles and CD7 endometrial thickness were determined by ultrasound, and CD7 serum E2 levels were measured. MAIN OUTCOME MEASURE(S): Ovarian response determined according to the number of mature oocytes retrieved. RESULT(S): On receiver operating characteristic analysis, CD7-FC had the highest combination of sensitivity and specificity to detect women with poor ovarian response when compared with the basal ovarian reserve tests. When a combined basal antral FC and CD7-FC evaluation was used with the optimum cutoff values of 6.5 and 7.5, respectively, sensitivity and specificity improved to 85% and 90%, respectively. CONCLUSION(S): Cycle day 7 follicle count during a long IVF protocol is helpful in predicting ovarian response in combination with the antral FC. This combination has high positive and negative predictive values. This may help clinicians and women to cancel cycles earlier and decrease the psychological, financial, and medical burden of a later cancellation.     

Age-related normogram for antral follicle count in women with polycystic ovary syndrome

Antral follicle count (AFC) has been shown to be a reliable marker for ovarian reserve. The aims of this study were to create an age-related normogram for AFC in infertile women with polycystic ovary syndrome (PCOS) and to compare age-related decline in AFC between infertile women with and without PCOS. A retrospective cohort study was conducted. Of a total of 4956 women, 619 women fit criteria for PCOS. In those with PCOS, there were large variations in the AFC between the 10th and 90th percentiles in all age groups. The rate of decline in AFC among women with PCOS was linear, while in those with non-PCOS, it was exponential until 30 years of age, and then became similar to that of PCOS. The rate of follicle loss per year was significantly slower in PCOS women compared with that in non-PCOS women. In both groups, the fastest period of follicle loss was between the ages of 18 and 30. The average follicle loss was 0.8 follicles/year in PCOS women and 1.7 follicles/year in those without PCOS (P < 0.001). This study concludes that age-related decline in AFC among women with PCOS is slower than in those without PCOS.Antral follicle count (AFC) has been shown to be a reliable marker for ovarian reserve. The aims of this study were to create an age-related normogram for AFC in women with polycystic ovary syndrome (PCOS), and to compare age-related decline in AFC between women with and without PCOS. A retrospective cohort study was conducted. All patients underwent a baseline transvaginal ultrasound that was performed on day 2–4 of the menstrual cycle. The total number of antral follicles of 2–9 mm in diameter was recorded. Of total 4956 women, 619 women fit criteria for PCOS. In those with PCOS, there were large variations in the AFC between the 10th 90th percentiles in all age groups. The rate of decline in AFC among women with PCOS was linear; while in those with non-PCOS, it was exponential until 30 years of age, and then became similar to that of PCOS. The rate of follicle loss per year was significantly slower in PCOS women compared with that in non-PCOS women. In both groups, the fastest period of follicle loss was between the ages 18–30 years. The average follicle loss was 0.8 follicles/year in PCOS women and 1.7 follicles/year in those without PCOS (P < 0.001). We have concluded that age-related decline in AFC among women with PCOS is slower than in those without PCOS. Further studies are needed to determine if the AFC normogram in women with PCOS could be clinically relevant to select the optimal gonadotrophin dose for ovulation induction.     

Chronological age vs biological age: an age-related normogram for antral follicle count, FSH and anti-Mullerian hormone

Objective

To evaluate the correlation between chronological and biological age by comparing the normograms of AFC, AMH, and FSH.

Design

Retrospective study

Setting

Data were taken from patients who visited the Infertility Clinic at Dr. Cipto Mangunkusumo General Hospital Jakarta, Indonesia, between January 2008 and December 2010.

Patient(s)

Infertile women who visited the Infertility Clinic.

Intervention(s)

None.

Main Outcome Measure(s)

Normogram of AFC (n = 366), AMH (n = 1616) and FSH (n = 415).

Result(s)

The correlations among AFC, AMH, FSH, and age are statistically significant. Normograms of AFC and AMH with 3rd, 10th, 25th, 50th, 75th, 90th, and 97th percentiles showed a decrease in age where FSH increased. A cut-off value of AFC, AMH, and FSH for poor responders was plotted at the 50th percentile of each normogram. Serum AMH and AFC started to decline in women between 34 and 35 years old. We found a relatively lower slope increase of FSH in older patients compared to that of AFC and AMH. FSH was observed to be a later predictor of biological age than AMH and AFC.

Conclusion(s)

AMH predicted biological age earlier than FSH or AFC. Normograms can provide a reference guide for physicians to counsel infertile women. However, future validation with longitudinal data is still needed.     

Antral follicle count in clinical practice: building the bridge from ovarian reserve to in vitro fertilization outcome

Antral follicle count provides a useful assessment of ovarian reserve to predict ovarian response, estimate risk for cycle cancellation, optimize stimulation protocol selection, and confidently select suitable candidates for IVF.