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Br J Obstet Gynaecol. 1992 Apr;99(4):333-7.

Spontaneous fetal reduction in multiple gestations assessed by transvaginal ultrasound.

Author information

1
Department of Obstetrics and Gynecology, Rambam Medical Center and Technion, Faculty of Medicine, Haifa, Israel.

Abstract

OBJECTIVE:

To assess the occurrence of disappearance of one or more of the fetuses in pregnancies which start as multiple gestation.

DESIGN:

Observational study.

SETTING:

Infertility section, Rambam Hospital, Haifa.

SUBJECTS:

88 women with multiple gestations, established after ovulation induction (54 twin, 26 triplet, five quadruplet, and three quintuplet) and diagnosed by transvaginal ultrasound at 5-6 weeks, in all of whom absorption of at least one gestation sac was detected at follow-up ultrasound scan.

INTERVENTIONS:

Follow-up by serial transvaginal and later abdominal ultrasound scan throughout pregnancy.

RESULTS:

Of the 54 twin gestations, 51 ended in the birth of a singleton and three in miscarriage. Of the 26 pregnancies starting as triplets, 12 ended in singleton births, 12 in twins and two miscarried. The five quadruplet gestations resulted in one singleton birth, one set of twins, two triplets, and one ended in late miscarriage. Of the three quintuplet pregnancies, two resulted in the birth of triplets, one of them after spontaneous, the other after iatrogenic fetal reduction. In the third quintuplet pregnancy, one fetus vanished spontaneously and another was subject to iatrogenic reduction, two fetuses survived and were liveborn. Of the 221 fetuses identified 107 (48%) vanished spontaneously.

CONCLUSION:

Iatrogenic fetal reduction should be delayed until 12 weeks gestation in quadruplet or higher multiple gestations, but is probably not indicated in twin and triplet gestations.

PMID:
1581281
[Indexed for MEDLINE]
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