Society guideline links: Multiple gestation

Introduction —

This topic includes links to society and government-sponsored guidelines from selected countries and regions around the world. We will update these links periodically; newer versions of some guidelines may be available on each society's website. Some societies may require users to log in to access their guidelines.

The recommendations in the following guidelines may vary from those that appear in UpToDate topic reviews. Readers who are looking for UpToDate topic reviews should use the UpToDate search box to find the relevant content.

International

●International Society of Ultrasound in Obstetrics and Gynecology (ISUOG): Practice guidelines on the role of ultrasound in twin pregnancy (2025)

●International Society for Prenatal Diagnosis (ISPD): Position statement for cell free (cf)DNA screening for Down syndrome in multiple pregnancies (2020)

Canada

●Society of Obstetricians and Gynaecologists of Canada (SOGC): Clinical practice guideline for the management of monochorionic twin pregnancies (2023)

●SOGC: Guidelines on prenatal screening for and diagnosis of aneuploidy in twin pregnancies (2017)

●SOGC: Guidelines on ultrasound in twin pregnancies (2017)

United States

●American College of Radiology (ACR): ACR Appropriateness Criteria on multiple gestations (revised 2024)

●American College of Obstetricians and Gynecologists (ACOG): Practice bulletin on multifetal gestations twin triplet and higher-order multifetal pregnancies (2021)

●American Society for Reproductive Medicine (ASRM): Committee opinion on multiple gestation associated with infertility therapy (2021)

●ACOG: Committee opinion on multifetal pregnancy reduction (2017, reaffirmed 2020)