The outcome of follow-up after selective reduction of triplet pregnancy after in vitro fertilization-embryo transfer

Objective:To evaluate the influences of the pregnancy outcome of multifetal pregnancy reduction.Methods:Reviewing analyze the follow-up data of the 33 cases(Group A)who received IVF-ET treatments and then reduced trial-pregnancy to double-pregnancy in our center between 2005.01 and 2008.06,whereas the data of 69 cases(Group B)who accepted the therapies and reached double-pregnancy in the same time.To compare the abortion rate,the premature delivery rate,the birth gestational age,weight,the perinatal death rate of the neonatal between the groups.Results:The abortion rate is 27.3% for A and 15.9% for B;the mean birth gestational age is(36.4±2.4)weeks for A and(36.4±2.8)weeks for B;the perinatal death rate is 8.3% for A and 6.0% for B,there is no significant difference between two groups(P0.05).The premature delivery rate is 29.2% for A and 25.9% for B,the difference is comparable between the groups(P0.05).The mean birth weight(2386±602)g for A is obviously lower than(2586±595)g for B(P0.05);the percentage of birth weight 1500g for A is 10.4% and 8.6% for B.There is a significant difference between the groups(P0.05).Conclusion:There is a possibility of having premature delivery and low birth weight as reduction of early trial-pregnancy.To choose the appropriate number of embryos resulting in reducing the occurrences of multiple pregnancy is an effective way to prevent the consequences of adverse pregnancies.