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Revista Brasileira de Ginecologia e Obstetrícia. 2009;31(5):230-234
DOI 10.1590/S0100-72032009000500005
PURPOSE: to evaluate the patient's age as an outcome predictor in an in vitro fertilization (IVF) program. METHODS: transversal study, which has included 302 women with ages varying from 24 to 46 years old, submitted to IVF, from May 2005 to July 2007. The patients were divided in three groups, according to their age: G<35 (n=161), G 36-39 (n=89) e G>40 (n=52). The number of collected oocytes, the fertilization rates, the number of transferred embryos, the embryonary quality and the pregnancy rate were evaluated. Statistical analysis was realized through Kruskal-Wallis variance analysis and χ2 test. RESULTS: in the G<35 group, an average of 8.8 oocytes by patient was obtained; in the G 36-49 group, 7.4; and in the G>40 group, 1.6. The number of oocytes obtained in G>40 group was significantly lower than in the other two groups (p<0.001).The fertilization rate was similar in the three groups, 61.4, 65.8 e 64.6% (p=0.2288), respectively. The percentage of good quality embryos was not statistically different among the three groups either, with rates of 57.4, 63.2 and 56.0% (p=0.2254), respectively. The average number of transferred embryos in each group was 3.1 (G<35), 2.8 (G 36-39) and 1.5 (G>40), respectively, with statistically significant decrease in the G>40 group (p<0.001). Concerning pregnancy rates, the G>40 group has presented a rate of 9.6%, a result which is significantly lower (p=0.0330) than the one presented by the G<35 and G 36-39 groups (26.1 e 27.0%, respectively), with no significant difference between themselves. CONCLUSIONS: though the embryonary quality is not different among women from different age groups, the number of collected oocytes, the number of transferred embryos and the pregnancy rate indicate that the women's age is an important predictive factor of success for the techniques of assisted reproduction and should be taken into consideration when this kind of treatment is proposed to women over 40.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2009;31(5):230-234
DOI 10.1590/S0100-72032009000500005
PURPOSE: to evaluate the patient's age as an outcome predictor in an in vitro fertilization (IVF) program. METHODS: transversal study, which has included 302 women with ages varying from 24 to 46 years old, submitted to IVF, from May 2005 to July 2007. The patients were divided in three groups, according to their age: G<35 (n=161), G 36-39 (n=89) e G>40 (n=52). The number of collected oocytes, the fertilization rates, the number of transferred embryos, the embryonary quality and the pregnancy rate were evaluated. Statistical analysis was realized through Kruskal-Wallis variance analysis and χ2 test. RESULTS: in the G<35 group, an average of 8.8 oocytes by patient was obtained; in the G 36-49 group, 7.4; and in the G>40 group, 1.6. The number of oocytes obtained in G>40 group was significantly lower than in the other two groups (p<0.001).The fertilization rate was similar in the three groups, 61.4, 65.8 e 64.6% (p=0.2288), respectively. The percentage of good quality embryos was not statistically different among the three groups either, with rates of 57.4, 63.2 and 56.0% (p=0.2254), respectively. The average number of transferred embryos in each group was 3.1 (G<35), 2.8 (G 36-39) and 1.5 (G>40), respectively, with statistically significant decrease in the G>40 group (p<0.001). Concerning pregnancy rates, the G>40 group has presented a rate of 9.6%, a result which is significantly lower (p=0.0330) than the one presented by the G<35 and G 36-39 groups (26.1 e 27.0%, respectively), with no significant difference between themselves. CONCLUSIONS: though the embryonary quality is not different among women from different age groups, the number of collected oocytes, the number of transferred embryos and the pregnancy rate indicate that the women's age is an important predictive factor of success for the techniques of assisted reproduction and should be taken into consideration when this kind of treatment is proposed to women over 40.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2005;27(11):661-664
DOI 10.1590/S0100-72032005001100005
PURPOSE: to compare the outcome of treatment in patients undergoing assisted reproductive technology (ART) cycles who donated eggs during their own ART treatment with the outcome of patients undergoing ART without egg donation. METHODS: we studied retrospectively the pregnancy and implantation rates of 50 patients who donated eggs during the course of their ART treatment (donor group), and the pregnancy and implantation rates of 50 patients who underwent ART cycles and kept all their eggs (non-donor group). between the years 2001-2003. The inclusion criteria used were as follows: age <35 years old, normal menstrual cycles, FSH<10 mIU/mL, first attempt of ART treatment and more than six mature oocytes retrieved. The results were analyzed statistically using the chi2 test. RESULTS: both groups were comparable in terms of age, indication, and duration of infertility. The mean age was 30.6 years for the donor group and 31.1 years for the non-donor group. All the patients of the donor group produced more than 6 eggs. From the donor group we collected 590 oocytes; 215 eggs were donated to recipients (36.5%) and 152 embryos were transferred. A total of 15 pregnancies were achieved (pregnancy rate per transfer: 30%); the implantation rate was 11.2% and there were 2 miscarriages (miscarriage rate: 13.3%). From the non-donor group, 545 oocytes were collected and 153 embryos were transferred. A total 17 pregnancies were achieved (pregnancy rate per transfer: 34%); the implantation rate was 14.3% and there were 3 miscarriages (miscarriage rate: 17.6%). The pregnancy and implantation rates were similar in both groups, and there were no significant statistical differences regarding the miscarriage rate (p>0.05). CONCLUSION: this study suggests that in patients who produce more than 6 oocytes, egg donation in the treatment cycle does not influence adversely the outcome of ART cycles and does not increase the miscarriage rate.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2005;27(11):661-664
DOI 10.1590/S0100-72032005001100005
PURPOSE: to compare the outcome of treatment in patients undergoing assisted reproductive technology (ART) cycles who donated eggs during their own ART treatment with the outcome of patients undergoing ART without egg donation. METHODS: we studied retrospectively the pregnancy and implantation rates of 50 patients who donated eggs during the course of their ART treatment (donor group), and the pregnancy and implantation rates of 50 patients who underwent ART cycles and kept all their eggs (non-donor group). between the years 2001-2003. The inclusion criteria used were as follows: age <35 years old, normal menstrual cycles, FSH<10 mIU/mL, first attempt of ART treatment and more than six mature oocytes retrieved. The results were analyzed statistically using the chi2 test. RESULTS: both groups were comparable in terms of age, indication, and duration of infertility. The mean age was 30.6 years for the donor group and 31.1 years for the non-donor group. All the patients of the donor group produced more than 6 eggs. From the donor group we collected 590 oocytes; 215 eggs were donated to recipients (36.5%) and 152 embryos were transferred. A total of 15 pregnancies were achieved (pregnancy rate per transfer: 30%); the implantation rate was 11.2% and there were 2 miscarriages (miscarriage rate: 13.3%). From the non-donor group, 545 oocytes were collected and 153 embryos were transferred. A total 17 pregnancies were achieved (pregnancy rate per transfer: 34%); the implantation rate was 14.3% and there were 3 miscarriages (miscarriage rate: 17.6%). The pregnancy and implantation rates were similar in both groups, and there were no significant statistical differences regarding the miscarriage rate (p>0.05). CONCLUSION: this study suggests that in patients who produce more than 6 oocytes, egg donation in the treatment cycle does not influence adversely the outcome of ART cycles and does not increase the miscarriage rate.