Neonatal cranial ultrasound lesions and developmental delays at 2 years of age among extremely low gestational age children.

Full Abstract

BACKGROUND:
Studies of the relationship between ultrasound images from preterm newborns and developmental delay most often are based on small samples defined by birth weight and exclude infants not testable with standardized assessments.

METHODS:
We evaluated associations between ultrasound-defined lesions of the brain and developmental delays at 24 months' corrected age in 1017 children born before the 28th postmenstrual week. Brain ultrasound scans were read for concordance on 4 lesions:
intraventricular hemorrhage, moderate/severe ventriculomegaly, white matter echodense/hyperechoic lesions, and white matter echodense/hypoechoic lesions and 2 diagnoses-periventricular leukomalacia and periventricular hemorrhagic infarction. Certified examiners, who were not aware of the infants' ultrasound findings, administered the Bayley Scales of Infant Development-Second Edition. Children with an impairment (eg., blindness) that precluded testing with the Bayley Scales and those for whom >2 test items were omitted were classified using the Vineland Adaptive Behavior Scales Motor Skills Domain instead of the Psychomotor Development Index and the Adaptive Behavior Composite instead of the Mental Development Index.

RESULTS:
Fully 26% of all of the children had delayed mental development (ie, Mental Development Index < 70), and 31% had delayed psychomotor development (ie, Psychomotor Development Index < 70). Ultrasound abnormalities were more strongly associated with low Psychomotor Development Index than with low Mental Development Index. Children without cranial ultrasound abnormality had the lowest probability (23% and 26%) of delayed mental or psychomotor development. Moderate/severe ventriculomegaly was associated with a more than fourfold increase in the risk of psychomotor delay and an almost threefold increase in the risk of mental delay. Echolucency was the next best predictor of delayed mental and psychomotor development. The probability of low scores varied with the number of zones involved and with the location of echolucency. At particularly high risk were infants with bilateral cerebellar hemorrhage, co-occurring ventriculomegaly and echolucency bilateral echolucency, or echolucency located posteriorly.

CONCLUSIONS:
Focal white matter damage, as characterized by echolucent/hypoechoic lesion, and diffuse damage, as suggested by late ventriculomegaly, are associated with delayed mental and psychomotor development.

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Author information

Author/s: O'Shea, T Michael (TM); Kuban, Karl C K (KC); Allred, Elizabeth N (EN); Paneth, Nigel (N); Pagano, Marcello (M); Dammann, Olaf (O); Bostic, Lisa (L); Brooklier, Kara (K); Butler, Samantha (S); Goldstein, Donald J (DJ); Hounshell, Gail (G); Keller, Cecelia (C); McQuiston, Susan (S); Miller, Alice (A); Pasternak, Steve (S); Plesha-Troyke, Susan (S); Price, Joan (J); Romano, Elaine (E); Solomon, Katherine M (KM); Jacobson, Amanda (A); Westra, Sjirk (S); Leviton, Alan (A); Extremely Low Gestational Age Newborns Study Investigators;

Affiliation: Wake Forest University Health Sciences, Department of Pediatrics, Medical Center Boulevard, Winston-Salem, NC 27157, USA. moshea(-atsign-)wfubmc.edu

Grants: NS 40069 (Agency:United States NINDS)

Journal and publication information

Publication Type: Comparative Study; Journal Article; Multicenter Study; Research Support, N.I.H., Extramural

Journal: Pediatrics (Pediatrics), published in United States. (Language: eng)

Reference: 2008-Sep; vol 122 (issue 3) : pp e662-9

Dates: Created 2008/09/02; Completed 2008/09/16;

PMID: 18762501, status: MEDLINE (last retrieval date: 11/6/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Brain Diseases - complications; physiopathology; ultrasonography
Child Development - physiology
Cognition - physiology
Developmental Disabilities - etiology; physiopathology; ultrasonography
Diagnosis, Differential
Echoencephalography - methods
Follow-Up Studies
Gestational Age

Gestational Age
Humans
Infant, Extremely Low Birth Weight - physiology
Infant, Newborn
Psychomotor Performance - physiology
Reproducibility of Results
Retrospective Studies
Risk Factors

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