Twin to Twin Transfusion Syndrome Foundation Banner
International Office
411 Longbeach Parkway
Bay Village, Ohio 44140 USA
Medical Professionals Photo

Creating a Medical Plan of Action A Monochorionic Placenta What is Twin to Twin Transfusion Syndrome Monochorionic Placental Pictures Sonography and Appointment Questionaire Cervical Assessment, Nutrition and Bedrest Planning for Your Delivery When Pregnancy Continues with a Loss Medical Research and Articles History of Twin to Twin Transfusion Syndrome Placental Protocol Professional Letters of Support Quotes from Parents About Their Doctors International Registry

How Often Does TTTS Occur?

Bullet Point Based on 2005 USA National Center for Health Statistics (4,138,349 total births), the rate of multiple births per year is now 1:30 (3.4%), or approximately 139,816 twins or higher multiples.

Bullet Point The majority of identical twins share a common (monochorionic) placenta, and of these approximately 15% go on to develop TTTS.

Bullet Point By extrapolating the number of expected identical twins (about one-third) from annual multiple births, and the number of twins with monochorionic placentas (about two-thirds), and from these the number thought to develop TTTS (about 15%), there are at least 4,500 TTTS cases per year in the U.S. alone:

139,816 X .33 X .66 X .15 = 4,568 cases of TTTS per year in U.S. (involving 9,500 or more babies)

Bullet Point Since spontaneous pregnancy loss (spontaneous abortion) and pregnancy terminations (elective abortions) that occur prior to 20 weeks go uncounted by the C.D.C., our estimate of TTTS cases may be very conservative.

Bullet Point Although infertility treatments have increased the rate of multiple birth, they have not diluted the expected incidence of identical twins even though multiple embryos are often produced and implanted. Studies show a higher rate of identical twins (up to 20 times with IVF) in women having these treatments than occur naturally.

There is approximately a 1 in 1000 chance of having TTTS in a given pregnancy.

The TTTS Foundation In The News

Prayers to all the Families

Thousands of Babies are Diagnosed Every Year
>
World Awareness Day - Dec. 7 2010

TTTS Walk for the babies

Official TTTS Foundation Events
Copyright © 1997-2018 The Twin To Twin Transfusion Syndrome Foundation. All Rights Reserved
411 Longbeach Parkway, Bay Village, Ohio 44140 USA | 800-815-9211 |