Embryo reduction in triplet pregnancies after assisted procreation: a comparative study

Area of Science:

• Reproductive Medicine
• Maternal-Fetal Medicine
• Neonatal Outcomes

Background:

• Triplet pregnancies, often resulting from assisted procreation, are associated with poor neonatal outcomes.
• Selective embryo reduction is a procedure to improve pregnancy and neonatal outcomes in multiple gestations.

Purpose of the Study:

• To evaluate pregnancy outcomes after selective embryo reduction in triplet pregnancies.
• To compare transcervical aspiration and transvaginal puncture methods for embryo reduction.
• To compare outcomes with triplet pregnancies not undergoing reduction.

Main Methods:

• Retrospective case series of 72 patients with triplet pregnancies after assisted procreation.
• Interventions included transcervical aspiration or transvaginal puncture with potassium chloride (KCl) injection.
• Outcomes assessed included spontaneous reduction rates, procedural complications, and neonatal results.

Main Results:

• Spontaneous embryo reduction occurred in 18% of cases.
• Transcervical aspiration had a high complication rate (3/14 abortions, 4/14 additional fetal losses).
• Transvaginal puncture showed a lower complication rate (2/19) and improved neonatal outcomes, comparable to twin pregnancies.

Conclusions:

• Triplet pregnancies post-assisted procreation have suboptimal neonatal outcomes.
• Selective embryo reduction, particularly transvaginal puncture, improves neonatal outcomes.
• Transcervical aspiration is not recommended due to high complication rates; transvaginal puncture may be associated with prematurity.