or TTTS
There is Always Hope
TTTS is not fully understood by even the leading doctors in the field of TTTS research. Few doctors are actually current on the newest techniques for diagnosing and treating the disorder. This results in some not so accurate assessments of the babies chances of survival. Huge advances in the ability to analyze and diagnose TTTS have been made over the past couple of years. New laser techniques pioneered by Dr. Quintero (Tampa) and Dr. De Lia (Milwaukee) are showing amazing success when compared to more traditional methods of combating the disease. There are several programs around North America and Europe that are currently working hard to quantify the syndrome better so that a right and proper treatment plan can be prescribed. Until then patients may need to look a little harder to find the right course for them. There are new ways available today to improve your babies chances against TTTS. Today, more than ever, there is reason for hope.
What is Twin-to-Twin Transfusion Syndrome?
Twin-to-Twin Transfusion Syndrome (TTTS) is a disease of the placenta. It affects only monozygotic ("identical") twins sharing a single placenta. Basically as the placenta develops the blood vessels form in a way that vessels from one umbilical cord connect up with vessels from the other. This causes a sort of short circuit between the babies. This can create a transfusion situation where one baby does not have an opportunity to process fluid coming to it because it immediately gets sent over to their sibling.
This situation forms during the first tri-mester, but as the babies assume more responsibility for pumping their own blood, the impact of that cross connection becomes more important. For this reason, symptoms typically start showing up in the second tri-mester.
Another way that TTTS shows up is at birth (acute TTTS). When the first baby is born, a significant pressure difference across the transfusion can occur. The unborn baby being under the pressure of the mothers abdominal muscles and the contractions, while the just born baby is only under air pressure. Blood will flow quickly to the born baby. If doctors are not careful this can kill one or both babies almost instantly. As it is, both babies will have problems with their blood cell counts and transfusions may be necessary along with other treatments. For this reason, any multiples pregnancy with a presumed shared placenta should be considered risky. Strong credence to a c-section should be given no matter what the parents desire for a natural birth are.
How is TTTS Identified?
Typically the first sign is a "Stuck" twin. This is caused by one baby not processing enough blood so as to make much, if any, amniotic fluid. The membrane separating the babies will shrink wrap the baby to the side of the sac. Doppler U/S can also detect uneven or unbalanced flow within the two cords. Other signs are a weight and/or size differential of 10%-20% between the twins. Often the belly can grow so quickly that you will measure 5 months one day and 9 months 4 days later.
When Does TTTS Strike?
TTTS can strike at any time during the pregnancy.
Typically a first trimester occurrence of Chronic TTTS is fatal, and there is nothing mother or medicine can do about it. No one has proven it yet, but it is suggested and stands to reason that there are probably lots of parents that never know there were twins growing in there before the baby passes on and begins to absorb back into the womb.
Second trimester Chronic TTTS is very problematic, because any invasion of the womb may trigger pre term labor that would be fatal at this point. The babies are too small to deliver and too big for reabsorption. Current procedures give these twins a fighting chance where little chances existed even just a few years ago.
Third trimester Chronic TTTS is perhaps the easiest to deal with. Here the babies are viable outside the womb so if things get too bad the option to deliver is real.
Internal Indicators
- Same Sex Babies (must)
- Single Placenta (not fused)
- Size discordance (typically >15%)
- Amniotic fluid measurement difference
- less than 1 cm on donor
- greater than 10 cm on recipient - Significant difference in cord Doppler readings
- Hydrops in recipient (water forming in body tissue)
- Larger then normal uterus for gestational age of twins
- One baby is felt kicking while the other is not
First of all I want to stress that because of different combinations of cross connecting and different sizes of those vessels that do cross connect, this disease can show up in a very wide number of ways. As there is little that can be done in the early stages of the pregnancy, I will try to focus more on second and third trimester cases.
It is not uncommon for a TTTS pregnancy to be mistaken for Monoamniotic (MoMo) early on if the donor baby is not receiving excess blood right from the beginning. The clue is that the donor will be "Stuck" to the wall of the womb and will move it's limbs little if at all during the U/S reading.
The U/S may also have difficulty in detecting the Donor's bladder, if TTTS has progressed far enough.
Each U/S visit should include a Doppler reading on the blood flow in the cords and other places. In the cords, they should measure and not the difference in flow and if possible how many vessels are functioning in each cord. This can give you an idea about placenta share and it can be a supporting clue in a TTTS diagnosis.
As TTTS progresses the Recipient may begin to experience a hardening of the heart. This is caused by 2 factors. The amount of blood being processed, since it is getting its own supply plus some of its siblings. The other being the thickness of the blood. This hardening of the heart can progress to a point where heart failure occurs. Should TTTS be corrected by any method, such as amnio drains, surgery or birth, the heart will typically correct itself as it grows.
As heart failure begins, water drops, called hydrops, will form in the recipients body tissue. This will typically proceed the demise of the baby by only a couple of days if that much.
Anemia is the biggest problem for the donor. If left untreated TTTS driven anemia will be terminal for the donor baby. Again, if intervention corrects the transfusion then anemia will correct itself.
What Can You Do Now?
The first thing you should do upon receiving a TTTS diagnosis is find out the answers to the following questions if possible:
- Gestational Age
- Are they same sex (even if you do not want to know the sex you NEED to know if they are the same, whatever they are)
- Single Placenta (Ask if there is any previous evidence of there being 2 placentas, this may help identify a fused placenta)
- Size difference between babies
- Fluid level on each baby
- Are hydrops present
This is no reflection on your doctors abilities. Twins are rare. ID twins are rare among twins. TTTS is rare among ID twins. Some OBs can go their whole careers without diagnosing a single TTTS case. Most see only a handful throughout their career. There have been a lot of advances in diagnosis and treatment over the past 5-8 years. Since doctors do not see it often, they do not necessarily feel compelled to spend much time keeping up to date with it. It is always my recommendation to get a second opinion from one of the leading experts in the TTTS field. One good thing about the second opinion here is that it does not require a second trip to the doctor. They can review the U/S results remotely. You need only get in touch with the two doctor's offices and they will transfer the information. Typically contacting one or the other is enough as long as you supply the information of the other.
The third thing you should do is find hope. Seek out someone who has traveled the road of TTTS. Often the prognosis is grim. When left untreated Chronic TTTS diagnosed before week 25 is so close to 100% fatal that survival odds are almost negligible. You may be told you have at best a 5% chance of taking even 1 baby home some day. Most parents are devastated. When a parent finds out that a child is on the way, they begin preparing emotionally and logistically. When they find out there are 2 babies on the way, they often go into overdrive and double their commitment to the pregnancy. After all it is 2 babies not one. It is difficult enough to come to terms with the fact that it is twins. To deal with the imminent loss of both is typically devastating. I cannot encourage strongly enough to get in touch with someone who has walked this road ahead of you. Today, with treatment there is a lot of reason for hope. Between the various techniques, TTTS patients enjoy a tremendous success rate. Due to the low occurrence of TTTS in the population and the newness of some of the treatment plans, it will take a number of years before anything resembling good statistics can be quoted.
TTTS moves very quickly once it begins showing its ugly head. You do not always have time to sit back and ponder the options. You must be quick and decisive. To create a proper action plan, you need a lot of information and you need it quickly. You will not have the luxury of getting over the shock of the diagnosis before you need to take steps in your attempt to avert what is inevitable if untreated.
I have provided some links and other information regarding resources for TTTS. These sites are not affiliated in any way with TwinStuff. Some belong to Doctors or Hospitals. Others are charitable foundations. I am also, not a doctor, nor do I play one in the chat rooms. I am the father of surviving TTTS twin girls and have traveled this road. I have read a massive amount of information on the topic and feel that I am capable of finding answers or directing to those that can provide them. I also provide the best information I can to several prominent message boards regarding this topic.
Definitions
- Recipient: The baby that is receiving the extra blood from the transfusion
- Donor: The baby that is receiving less blood as a result of the transfusion
- Stuck Twin: The donor twin will appear stuck to the wall of the sack on an U/S. This is because there is little or no amniotic fluid inside the baby's sack and the dividing membrane has shrink wrapped to the wall. The membrane separating the twins can be difficult or impossible to find when the Donor is complete Stuck to the wall of the sack.
- Hydrops: Water droplets that form in the babies body tissue as a result of organs being overworked.
- Stage I TTTS: Less then 2 cm of amniotic fluid on the donor and greater then 8 cm of amniotic fluid on the recipient.
- Stage II TTTS: Same as Stage I without any visible bladder on the Donor baby.
- Stage III TTTS: Same as Stage I (atypical) or Stage II (classic) with Critically Abnormal Dopplers.
- Stage IV TTTS: Same as Stage III with visible Hydrops
- Stage V TTTS: One or both babies have died
- Amniocentesis: The periodic draining of amniotic fluid from the sac of the recipient in order to balance the pressure between the babies.
- Septostomy: The intentional rupturing of the dividing membrane. This creates a MoMo pregnancy (see Mono Amniotic below).
- Fused Placenta: When the placentas of fraternal twins form close together in the womb, it is possible for them to grow into each other. On and U/S they are almost indistinguishable from a single placenta. Even post birth biopsy can confuse a single placenta with a fused placenta. In some percentage of identical twins there are actually two placentas and not one. These often fuse since there is a high likely hood of womb implantation being within a small vicinity.
- Mono Amniotic (MoMo): Some identical twins share both the Chorionic sack and the Amniotic Sack. This is not the typical configuration for identical twins and has many risks associated with it. Cord entanglement risks will usually direct doctor to want to deliver babies at or before 32 weeks gestation dependent upon cord entaglement and position. TTTS patients are sometimes misdiagnosed as MoMo since in both cases there is no visible dividing membrane (see Stuck Twin above).
TwinStuff Health Issues and Special Needs Forum
This site's forum for supporting Health Issues
Provides message board support
Provides a private forum
TTTS Foundation
The only non profit organization in the USA dedicated solely to TTTS
Provides support by e-mail and phone
Provides a comprehensive book on TTTS to newly diagnosed TTTS patients via the mail
Provides other support on a case by case basis.
Some information regarding TTTS
The Florida Institute for Fetal Diagnosis and Therapy
Institute dedicated to TTTS research and the exploration of corrective surgical procedures
Host of Dr. Rubn Quintero. Pioneer of one of the corrective surgical procedures for TTTS
Detailed information about TTTS from a general and a medical perspective
Message boards including one that is reviewed by Dr. Quintero and his staff
The most comprehensive collection of both leyman and medical information pertaining to TTTS available on the web.
Dr. Ramen Chmait
CHLA-USC-IMFH@CHA Hollywood Presbyterian Hospital
The Doctor's Tower
1300 N. Vermont Avenue Suite 706
Los Angeles, California 90027
323 671-6074
Mary E. Spatz RN
Fetal Therapy Coordinator
mspatz@chla.usc.edu
813 841-7218
website: OurBaby
Covenant Healthcare St. Joseph Regional Medical Center TTTS
Institute dedicated to TTTS research and the exploration of corrective surgical procedures
Host of Dr. Julian De Lia. Pioneer of one of the corrective surgical procedures for TTTS
Some information regarding TTTS
Twin to Twin Transfusion Syndrome Awareness
Lots of various kinds of information regarding TTTS in a couple of different formats including Stories, newsletter, guest book and a map of TTTS specific treatment centers.
Links to related issues like loss and NICU
Twin Hope
Primarily a reference collection
Some information about TTTS
Lots of addresses and links
Twin2Twin
Association dedicated to research and treatment of TTTS in the United Kingdom
Detailed information about TTTS from a general and a medical perspective
Parental stories
Notes to Parents page gives a great run down of TTTS in laymans terms
Some Doctors that specialize in TTTS Treatment (contacts as of 11/05)
Dr. Julian DeLia (laser surgeon)
The International Institute for the Treatment of Twin-to-Twin
Transfusion Syndrome http://www.covhealth.org/stellent/groups/p...ocuments/www/co
E-mail: jedelia@covhealth.org
Telephone: (414) 447-3535
Mailing address:
TTTS Institute
St. Joseph Community Foundation
5000 W. Chambers St.
Milwaukee, WI 53210-1688
Dr. Ruben Quintero (laser surgeon)
Florida Perinatal Associates Fetal Therapy Program
Web site: http://www.fetalmd.com/ttts.htm
Telephone: (888 ) FETAL-77 (338-2577)
E-mail: mallenrn@aol.com (Mary Allen, R.N.)
Fax: (813) 872-3794
Mailing address:
St. Joseph's Women's Hospital
Fetal Therapy Department
3001 W. Martin Luther King Blvd.
Tampa, FL 33607
Timothy Crombleholme, M.D.
Fetal Care Center of Cincinnati:
Web site: http://www.cincinnatichildrens.org/svc/ prog/fetal-care/default.htm
E-mail: fetalcarecenter@cchmc.org
Telephone: (888 ) Fetal59 or (888 ) 338-2559
Mailing address:
Cincinnati Children's Hospital Medical Center
3333 Burnet Avenue
Cincinnati, OH 45229
For information on the Twin-Twin Transfusion Trial, visit:
http://www.fetalsurgery.chop.edu/tttxstd.shtml
Fetal Treatment Center
University of California San Francisco
513 Parnassus Avenue
HSW 1601
San Francisco, CA 94143-0570
1-800-RX-FETUS
Fax (415) 502-0660
web address: http://www.fetus.ucsf.edu
email: fetus@surgery.ucsf.edu
The Fetal Treatment Program
Hasbro Children's Hospital
Women & Infants' Hospital
Brown Medical School
Web site: bms.brown.edu/pedisurg/Fe...tment.html
http://www.fetal-treatment.org
E-mail: Francois_Luks@brown.edu
Telephone: (401) 421-1939
Mailing address:
101 Dudley Street
Providence, RI 02903


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