J Matern Fetal Neonatal Med. 2004 Oct;16(4):219-22

Embryo reduction versus expectant management in triplet pregnancies.

Authors:

Antsaklis A,Souka AP,Daskalakis G, Papantoniou N,Koutra P,Kavalakis Y,Mesogitis S.

First Department of Obstetrics and Gynaecology, Alexandra Maternity Hospital, University of Athens, Greece.

Objectives:

In triplet pregnancies, to compare pregnancy outcome of expectant management with that after embryo reduction to twins.

Methods:

Retrospective study of 255 trichorionic triplet pregnancies, of which 185 had embryo reduction to twins (reduced group) and 70 were managed expectantly (non-reduced group).

Results:

Median birth weight was higher by about 500 g and gestation prolonged by about 3 weeks in the reduced pregnancies compared with the expectantly managed pregnancies (2300 vs. 1760 g; 36 vs. 33 weeks). The rates of preterm delivery were significantly lower in the reduced group (11.17 vs. 36.76% for delivery at< or = 32 weeks and 40.58 vs. 83.82% for delivery at< or = 35 weeks, reduced vs. non-reduced group). The percentage of infants born with low birth weight was significantly higher in the expectantly managed triplets (10.98 vs. 28.44% for birth weight< or = 1500 g and 68.55 vs. 92.89% for birth weight< or = 2500 g, reduced vs. non-reduced group). Total fetal loss was significantly higher in the reduced group than in the non-reduced group (15.41 and 4.76%, respectively) and the difference was mainly due to the higher miscarriage rate in the reduced group (8.11 vs. 2.86% in the non-reduced group). With the expected rates of handicap in preterm infants, we would anticipate 0.63% of severely handicapped children due to extreme prematurity in the reduced group and 1.64% in the non-reduced group.

Conclusion:

In triplet pregnancies, embryo reduction to twins significantly reduces the risk of severe preterm delivery and very low birth weight by about one-third, at the expense of a significant increase in total fetal loss, by about one-quarter. The procedure is likely to reduce the risk of having a severely handicapped child due to extreme prematurity.



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