Neurocognitive test profiles of extremely low birth weight five-year-old children differ according to neuromotor status.
The neurocognitive outcome of children born with extremely low birth weight (ELBW) is highly variable due to the complexity of morbidity. So far, no study has compared comprehensive neuropsychological test profiles in groups with different neuromotor status. In a national cohort of ELBW children neuropsychological test profiles were assessed in 4 groups defined according to a neurological examination at 5 years of age: normal neuromotor status (N = 56), motor coordination problems (N = 32), multiple subtle neuromotor signs including both motor coordination problems and deviant reflexes (N = 20), and spastic diplegia (N = 12). The neurocognitive assessment included a test of intelligence, the Wechsler Primary and Preschool Scale of Intelligence-Revised (WPPSI-R) and 14 subtests of attention and executive functions, verbal functions, manual motor functions, visuoconstructional functions and verbal learning (NEPSY). The children with normal neuromotor status performed within the average range; children with motor coordination problems had widespread impairment; and children with spastic diplegia and children with multiple minor neuromotor signs had uneven test profiles with stronger verbal results but weaknesses in attention and executive functions, and in manual motor and visuoconstructional tasks. In conclusion, very preterm children with neuromotor signs, including motor coordination problems, are at risk for neurocognitive impairment, in spite of average intelligence. More impaired children have more irregular test profiles. Follow-up and neuropsychological assessment of very preterm children with minor neuromotor signs are therefore indicated.
Korkman
Marit
M
Department of Psychology, University of Helsinki, Helsinki, Finland. marit.korkman@helsinki.fi
Mikkola
Kaija
K
Ritari
Niina
N
Tommiska
Viena
V
Salokorpi
Teija
T
Haataja
Leena
L
Tammela
Outi
O
Pääkkönen
Leena
L
Olsén
Päivi
P
Fellman
Vineta
V
D002547:Cerebral Palsy / Q000503:physiopathology*; D002675:Child, Preschool; D003071:Cognition / Q000502:physiology; D002658:Developmental Disabilities / Q000209:etiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D052577:Infant, Extremely Low Birth Weight; D007231:Infant, Newborn; D008297:Male; D019957:Motor Skills Disorders / Q000503:physiopathology*; D015999:Multivariate Analysis; D009460:Neurologic Examination; D009483:Neuropsychological Tests; D011597:Psychomotor Performance / Q000502:physiology