Current location:Home>Children>

 Pub date

Mismatched hearts save babies' lives - Kids & Parenting -

Source:MSNBC NEWS  Editor:MSNBC NEWS  Read:

Mismatched hearts save babies' lives - Kids & Parenting -

Mismatched hearts save babies' lives

Lack of immune rejection fuels wrong-blood-type transplants

WASHINGTON - Connor Geddes was 13 days old when surgeons gave him a new heart that didn't match his blood type - deliberately.

Connor, now 11 months old and thriving, is one of several dozen babies around the world to have received mismatched hearts, part of a slowly growing movement to increase these tiniest patients' survival by taking advantage of a lag in their immune systems.

Now the nation's transplant network is expanding that effort, saying youngsters may be candidates for an incompatible heart up to age 2.

It's the first step in a new push by the United Network for Organ Sharing to decrease the number of children who die awaiting an organ transplant, a toll particularly high for infants and toddlers.

'It will not happen overnight'
"It will not happen overnight," cautioned Dr. Stuart Sweet of Washington University in St. Louis, chairman of the network's pediatric transplant committee. But the new heart guidelines "have the potential for significantly impacting the number of patients who die on the waiting list."

If the policy sounds counterintuitive, well, it is: Implant a mismatched heart in an adult, and he or she will die rapidly. That happened in 2003, when surgeons in North Carolina accidentally gave a teenager the wrong-type heart and lungs.

But babies' immune systems must learn to recognize and attack an organ of a different blood type, a process that's turning out to be more gradual than scientists long thought.

Transplant a heart before the baby starts making antibodies that will attack a mismatched organ, and he or she survives as well as babies given matching hearts, says Dr. Lori West, the Canadian surgeon who pioneered incompatible transplants in Toronto in the late 1990s.

Those babies still need immune-suppressing drugs for life - blood type is just one form of organ rejection.


But given the scarcity of tiny hearts, the mismatch option was good news. In 2005, the last count available, 45 children under age 2 died while awaiting a new heart. As of last month, 74 youngsters under 2 were on the waiting list.

About one in 5,000 children are born with a heart defect so bad that they'll need a transplant in the first year or two of life. Yet few babies die of conditions that allow their hearts to be donated.

CONTINUED: Age cutoff for mismatched donations uncertain

1 | 2 | Next >

Print this Email this
Study: Adoptive parents more invested
. U.S., Britain rank last in kid welfare
. Study: Nasal spray beats flu shot for kids
. Warning on diarrhea vaccine for infants
. Mismatched hearts save babies' lives
. Study: Adoptive parents more invested
. Autism rate in U.S. higher than thought
. Dads may hike daughters' risk of bulimia
. Surprise hope for Rett syndrome
. Born to be bad? It may be in the genes
. To spank or not? Readers talk back
. Kids & Parenting Section Front

?/font>Huge storm leaves misery, mess behind
?/font>Daytona rocked by cheating scandal
?/font>Audit: Billions mismanaged in Iraq
?/font>WP: Doubts haunt U.S. Iran policy
?/font>JetBlue apologizes after stranding
?/font>NBC, Olbermann extend agreement
?/font>Video: Tasty! Colbert for dessert
?/font>Video: Dannielyn's babysitter speaks
?/font>Hardblogger: Iraq debate meaningless?
?/font>Howard Stern proposes to girlfriend
 Most Popular
Most Viewed
?/font>Wal-Mart spiffs up in bid to broaden appeal
?/font>JetBlue apologizes after passengers stranded
?/font>Gore plans to rock against warming
?/font>New $1 coin the first to feature a president
?/font>Venezuela bolsters oil security after threat
?/font>Most viewed on
Top Rated
?/font>A Tribute to Miep
?/font>Quest to heal Iraqi boy became a final mission
?/font>Mystery ailment devastates honeybee industry
?/font>Mama cat adopts Rottweiler puppy
?/font>Auditors say billions of dollars wasted in Iraq
?/font>Most viewed on
Most E-mailed
?/font>Gore plans to rock against warming
?/font>Women's desks only look cleaner
?/font>Mama cat adopts Rottweiler puppy
?/font>Auditors say billions of dollars wasted in Iraq
?/font>Why is U.S. always last in line for new phones?
?/font>Most viewed on

MSN Privacy | LegalFeedback | Help

<-Dads may increase daughters' risk of bulimia - Kids & Parenting -   ->Warning on diarrhea vaccine for infants - Kids & Parenting -