Navigation Links
Preterm infants exposed to stressors in NICU display reduced brain size
Date:10/3/2011

New research shows that exposure to stressors in the Neonatal Intensive Care Unit (NICU) is associated with alterations in the brain structure and function of very preterm infants. According to the study now available in Annals of Neurology, a journal published by Wiley-Blackwell on behalf of the American Neurological Association and Child Neurology Society, infants who experienced early exposure to stress displayed decreased brain size, functional connectivity, and abnormal motor behavior.

Infants born prior to the 37th week of pregnancy are considered preterm, which occurs in 9.6% of all births worldwide, according to the Bulletin of the World Health Organization (WHO). A report by The National Institute of Child Health and Human Development confirms that preterm birth occurs in 12% of all pregnancies in the U.S. In addition to increased mortality risk, prior studies have shown that up to 10% of very preterm infants (22-32 weeks gestation) have cerebral palsy, nearly 40% display mild motor deficiency, and up to 60% experience cognitive impairments, social difficulties and emotional issues.

Babies who are premature are commonly admitted to the NICU for specialized medical attention, allowing time for immature organs to further develop. While interventional studies have demonstrated that exposure to stressors in the NICU may be harmful and reducing stress in premature infants improved outcomes, it is unknown how stressors in neonatal units impacts infant brain development. The present study, led by Drs. Terrie Inder and Gillian Smith, both Washington University researchers at St. Louis Children's Hospital in Missouri, is the first to report on the effects of stress among hospitalized preterm infants and its impact on brain development.

For their observational study, the research team recruited 44 preterm infants within 24 hours of birth from November 2008 to December 2009. Study participants were less than 30 weeks gestation, or very preterm, and stress was measured by using the Neonatal Infant Stressor Scale (NISS)a scale consisting of 36 interventions that contribute to infant stress, ranging from diaper change to intubation. Magnetic resonance imaging (MRI) and neurobehavioral examinations were used to evaluate cerebral structure and function.

Results show that the average daily exposure to stressors was greatest in the first 14 days following birth. The greater number of stressors that an infant was exposed to was associated with decreased frontal and parietal brain width. Researchers also reported altered brain microstructure and functional connectivity within the temporal lobes in infants with early stress exposure. Abnormal movement pattern and reflex scores were lower among preterm infants exposed to higher stress in the first two weeks of life.

"Our findings suggest that stress exposure reduces the brain size in early preterm infants and long-term consequences are unknown," said Dr. Inder. "However, prior research has found that brain volume at (term) birth is a predictor of neurodevelopmental outcomes later in childhood." The authors suggest that further research of stress exposure on the preterm brain, independent of illness severity, is needed to improve outcomes for premature infants.


'/>"/>

Contact: Dawn Peters
healthnews@wiley.com
781-388-8408
Wiley-Blackwell
Source:Eurekalert

Related medicine news :

1. Problems From Preterm Birth May Return in Adulthood
2. Helping preterm babies get the best start
3. Antibiotic may prove beneficial to preterm infant lung health
4. Progesterone Treatment Cuts Preterm Birth Risk in Certain Women
5. Grant helps UT Southwestern researcher study causes of preterm birth
6. March of Dimes provides $2.4 million in new funding for preterm birth research
7. Use of alcohol-free antibacterial mouth-rinse is associated with decrease in preterm birth
8. Study finds preterm birth clinic attendance leads to major reduction in infant disability
9. Study finds preterm birth clinic attendence leads to major reduction in infant disability
10. Study finds that folate does not offer protection against preterm delivery
11. Care of late-preterm preemies may be insufficient
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/12/2017)... ... October 12, 2017 , ... CitiDent ... sleep apnea using cutting-edge Oventus O2Vent technology. As many as 18 million ... by frequent cessation in breathing. Oral appliances can offer significant relief to about ...
(Date:10/12/2017)... , ... October 12, 2017 , ... ... to meet the demand of today’s consumer and regulatory authorities worldwide. From Children’s ... experts and tested to meet the highest standard. , These products are ...
(Date:10/12/2017)... ... 2017 , ... The American College of Medical Informatics (ACMI) will present the ... Opening Session of AMIA’s Annual Symposium in Washington, D.C. AMIA’s Annual Symposium ... a pioneer in the field of medical informatics, this prestigious award is presented to ...
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... drug delivery system that we intend to develop to enable prevention of a ... lead to severe hearing loss, especially in pediatric patients. For cisplatin, hearing loss ...
(Date:10/12/2017)... ... October 12, 2017 , ... HMP , a leader ... a 2017 Folio Magazine Eddie Digital Award for ‘Best B-to-B Healthcare Website.’ Winners were ... 11, 2017. , The annual award competition recognizes editorial and design excellence across a ...
Breaking Medicine News(10 mins):
(Date:9/25/2017)... Sept. 25, 2017  EpiVax, Inc., a leader ... and immune-engineering today announced the launch of EpiVax ... of personalized therapeutic cancer vaccines. EpiVax has provided ... access to enabling technologies to the new precision ... lead EpiVax Oncology as Chief Executive Officer. Gad ...
(Date:9/22/2017)... -- AVACEN Medical (AVACEN) announced that its CE-Marked AVACEN ... with the widespread pain associated with fibromyalgia in the ... Essex, England commented, "I had difficulty ... sleep at all, tremendous pain, with every movement sending ... AVACEN 100] enough, how this has and is helping ...
(Date:9/18/2017)... , Sept. 18, 2017  PMD Healthcare of ... Pharmacy of Kalamazoo, Mich. , have ... service that expedites and streamlines patient and provider access ... 2.0, and wellness management services.  ... used to measure lung function for a variety of ...
Breaking Medicine Technology: