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Cooling New borns
May Prevent Brain Damage
Researchers from the University of
Alabama (UAB) are studying the effect of "cooling" sick newborns to reduce the
risk of, and possibly prevent, brain damage.
Newborns whose hearts stop beating or
nearly stop immediately following birth are resuscitated and then put into a
temperature-controlled water bed. Researchers slightly lower the baby's temperature by
adjusting the temperature of the bed. The babies are closely watched for three days before
their temperature is raised to normal. Waldemar Carlo, M.D., from UAB, says,
"Previous studies show that three days is the optimal 'cooling' time to protect the
brain from damage."
Researchers aren't sure exactly how
this "cooling" effect works but they do know people can survive accidents in
cold water much longer than warm water without impairing brain function. Dr. Carlo says,
"It may be that lowering the temperature of the brain prevents the release of certain
substances or prevents the effects of certain substances that may be harmful to the brain.
This study will provide a greater understanding of the mechanisms involved."
This "cooling" mechanism is
also beneficial for other patients. A previous study in Germany showed "cooling"
reduced the mortality rate of stroke patients from an expected 80 percent to 43 percent.
Dr. Carlo says, "It is also used to lower the body temperature of patients during
heart transplants." |
