Intellectual outcomes of extremely preterm infants at school age.
Pediatr Int
; 59(5): 570-577, 2017 May.
Article
in En
| MEDLINE
| ID: mdl-27935152
ABSTRACT
BACKGROUND:
The survival rate of extremely preterm (EP) infants (<28 weeks of gestation) has improved dramatically, and there is great interest in the long-term prognosis. The aim of this study was to elucidate the influence of prenatal and postnatal care on long-term intellectual outcome in EP infants.METHODS:
Subjects were EP infants admitted to the neonatal intensive care unit from 1982 to 2005. The survival rate and neurodevelopmental outcomes at 6 years of age were analyzed for the periods 1982-1991 (period 1) and 1992-2005 (period 2). Logistic regression analysis was performed to examine risk factors for intellectual impairment.RESULTS:
Survival rate improved significantly from 84.5% (period 1) to 92.4% (period 2; P = 0.007). Follow-up data were obtained from 92 children in period 1 (69.7% of survivors) and from 245 in period 2 (72.3% of survivors). The incidence of intellectual impairment increased from 16.3% (period 1) to 31.0% (period 2). Significant factors associated with intellectual impairment were period 2 (OR, 3.53; P = 0.007), supplemental oxygen at 36 weeks' corrected age (OR, 2.22; P = 0.012), number of days in the hospital (OR, 1.01; P = 0.012), intraventricular hemorrhage (IVH; OR, 3.05; P = 0.024), and later tube-feeding commencement date (OR, 1.10; P = 0.032).CONCLUSIONS:
Despite an increase in survival rate, the rate of intellectual impairment increased in period 2. According to risk factor analysis, reducing the incidence of chronic lung disease and/or apnea, IVH, and nutritional deprivation is a key factor in improving the intellectual outcomes of EP infants.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Infant, Extremely Premature
/
Infant, Premature, Diseases
/
Intellectual Disability
Type of study:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Child
/
Female
/
Humans
/
Male
/
Newborn
Country/Region as subject:
Asia
Language:
En
Journal:
Pediatr Int
Journal subject:
PEDIATRIA
Year:
2017
Document type:
Article
Affiliation country:
Japan