Bennett (right) pictured with his family, received care in Seattle Childrens NICU for hypoxic-ischemic encephalopathy
For newborn babies recovering from a difficult birth resulting in a brain injury, Seattle Childrens Neonatal Intensive Care Unit (NICU) team employs a surprising therapy they lay some babies on ice.
On the Pulse shares how this cooling treatment can help newborns heal and stop further damage from happening.
In 2022, the NICU treated 45 patients with Hypoxic-ischemic encephalopathy (HIE), a brain injury that occurs when the brain experiences a decrease in oxygen or blood flow and often requires the patients body temperature to be cooled to 33.5 degrees Celsius, or about 92.3 degrees Fahrenheit.
HIE in newborns is sudden and typically unanticipated, explained Dr. Ulrike Mietzsch, the co-director of Seattle Childrens Neonatal Neurocritical Care Unit (Neuro NICU). We can see HIE in babies whose mothers have had uncomplicated, full-term pregnancies. While giving birth, an unexpected event can happen for example the placenta comes off too early during delivery, or we later learn that the placenta was unable to adequately support the baby.
For babies with HIE, getting the right treatment quickly is critical. Community physicians notify experts in Seattle Childrens Neonatology Program when they deliver a baby who has undergone a complicated delivery, has HIE symptoms and meets defined criteria.
Although the baby has already experienced the initial HIE brain injury, the NICU team can administer a cooling treatment to help the babys brain and body recover and prevent whats known as a secondary injury.
To do that, the team lays babies on cooling mattresses specifically designed to lower babies temperature and reduce the inflammation in the brain that happens because of the acute injury during birth.
On arrival, the NICU team involves Seattle Childrens Neurology team for urgent evaluation and continuous electroencephalogram (EEG) tests, which measure the electrical activity of the brain and can help the care team monitor to quickly evaluate for seizures, which can occur with HIE.
Seattle Childrens NICU features 32 large, private rooms, each with plenty of light sleeping space for families and a bathroom with shower
This cooling treatment functions much like icing an ankle after a sprain, according to Dr. Mietzsch.
Cooling these babies doesnt change the initial injury, but it does give a babys body time to recover and reduces what we call a secondary injury, she said.
After the initial HIE injury, the body tries to repair that first injury, but it can go too far, causing additional injury to the brain due to inflammation and too much energy expenditure. By cooling the bodys temperature, were lowering the brains metabolism and reducing inflammation and swelling.
The cooling treatment reduces how much energy is required to complete other tasks.
Were trying to decrease a patients energy output so their brain doesnt have to work quite as hard as it normally would, which protects the brain from further injury, added Dr. Nina Natarajan, the co-director of Seattle Childrens Neuro NICU.
Studies indicate if a babys temperature is cooled within the first six hours of birth, they have far better rates of surviving and experiencing less long-term symptoms of a brain injury.
For new parents, watching their newborn receive this type of treatment can be jarring.
The NICU and Neonatology teams have taken steps rooted in compassion to support families whose child is receiving the treatment, like using special cooling blankets so parents can continue to hold their baby while theyre getting cooled.
Babies spend 72 hours on a cooling pad and then their body temperature is slowly increased over six or seven hours to a regular temperature.
When a baby experiences a seizure, there are fewer outward signs than with an older child. Therefore, all babies with HIE are monitored with an EEG to detect and treat seizures as soon as they happen. Once cooling therapy is completed and the baby is stable, magnetic resonance imaging (MRI) is obtained.
Seattle Childrens expert Neuroradiology team views and analyzes images of patients brains which can offer insight into the long-term implications of a patients HIE injury.
When babies are discharged, long-term developmental follow-up is crucial. While some do not experience long-term health implications from their HIE, others can experience lifelong impacts ranging from difficulty learning to delays developing motor or language skills.
The NICU team works closely with the Infant Therapy team and the University of Washington Medical Centers Infant Development Follow Up Clinic to make sure patients get the right follow-up care as they grow.
For some HIE patients, we know there are conditions that could be in their future, like cerebral palsy, Dr. Natarajan explained. We want to make sure we support families and get these babies the resources they need so they can hopefully be the best versions of themselves possible. Even in scenarios where we are optimistic theres not long-term injury, we want to inform families of possible outcomes and resources early.
Read more here:
A Cool Approach: Why Seattle Children's NICU Puts Babies 'On Ice ... - On the Pulse
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