Cognitive outcome at 2 years of age in Finnish infants with very low birth weight born between 2001 and 2006. 2010

P Munck, and L Haataja, and J Maunu, and R Parkkola, and H Rikalainen, and H Lapinleimu, and L Lehtonen, and
Department of Pediatrics, Turku University Hospital, Turku, Finland. petmun@utu.fi

OBJECTIVE To study cognitive outcome of premature, very low birth weight (VLBW) infants in relation to parental education and neonatal data. METHODS A regional cohort of 182 VLBW infants born between 2001 and 2006 was followed up. Brain ultrasounds (US) were examined serially until term age and brain magnetic resonance imaging at term age. Neurological status was examined systematically. Cognitive development was assessed using the Mental Developmental Index (MDI) of Bayley Scales at 2 years of corrected age. A total of 192 healthy full-term (FT) controls were assessed with the MDI at 2 years of age. RESULTS The mean MDI in VLBW infants was 101.7 (SD 15.4), which was lower compared with FT controls (109.8, SD 11.7, p < 0.001). In regression analysis of the demographic and medical data of VLBW infants, postnatal corticosteroids (p = 0.04), intestinal perforation (p = 0.03) and major brain pathology (p = 0.02) were negatively associated with the MDI. In VLBW infants, the prevalence of neurodevelopmental impairment was 9.9% (3.3% MDI below 70, 7.1% cerebral palsy, 2.2% hearing aid, no blind infants). CONCLUSIONS Cognitive development of VLBW infants seemed to have improved in comparison with earlier publications, but it differed from the FT controls. Neonatal factors affected cognitive development. Therefore, updated regional follow-up data are important for clinicians.

UI MeSH Term Description Entries
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D007234 Infant, Premature A human infant born before 37 weeks of GESTATION. Neonatal Prematurity,Premature Infants,Preterm Infants,Infant, Preterm,Infants, Premature,Infants, Preterm,Premature Infant,Prematurity, Neonatal,Preterm Infant
D008279 Magnetic Resonance Imaging Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques. Chemical Shift Imaging,MR Tomography,MRI Scans,MRI, Functional,Magnetic Resonance Image,Magnetic Resonance Imaging, Functional,Magnetization Transfer Contrast Imaging,NMR Imaging,NMR Tomography,Tomography, NMR,Tomography, Proton Spin,fMRI,Functional Magnetic Resonance Imaging,Imaging, Chemical Shift,Proton Spin Tomography,Spin Echo Imaging,Steady-State Free Precession MRI,Tomography, MR,Zeugmatography,Chemical Shift Imagings,Echo Imaging, Spin,Echo Imagings, Spin,Functional MRI,Functional MRIs,Image, Magnetic Resonance,Imaging, Magnetic Resonance,Imaging, NMR,Imaging, Spin Echo,Imagings, Chemical Shift,Imagings, Spin Echo,MRI Scan,MRIs, Functional,Magnetic Resonance Images,Resonance Image, Magnetic,Scan, MRI,Scans, MRI,Shift Imaging, Chemical,Shift Imagings, Chemical,Spin Echo Imagings,Steady State Free Precession MRI
D008297 Male Males
D012044 Regression Analysis Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable. Regression Diagnostics,Statistical Regression,Analysis, Regression,Analyses, Regression,Diagnostics, Regression,Regression Analyses,Regression, Statistical,Regressions, Statistical,Statistical Regressions
D001724 Birth Weight The mass or quantity of heaviness of an individual at BIRTH. It is expressed by units of pounds or kilograms. Birthweight,Birth Weights,Birthweights,Weight, Birth,Weights, Birth
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D003072 Cognition Disorders Disorders characterized by disturbances in mental processes related to learning, thinking, reasoning, and judgment. Overinclusion,Disorder, Cognition,Disorders, Cognition
D004522 Educational Status Educational attainment or level of education of an individual. Education Level,Educational Achievement,Educational Attainment,Educational Level,Level of Education,Maternal Education Level,Maternal Educational Attainment,Maternal Educational Level,Paternal Education Level,Paternal Educational Attainment,Paternal Educational Level,Achievement, Educational,Educational Status, Maternal,Educational Status, Paternal,Maternal Educational Status,Paternal Educational Status,Status, Educational,Attainment, Educational,Attainment, Maternal Educational,Attainment, Paternal Educational,Education Level, Maternal,Education Level, Paternal,Education Levels,Educational Achievements,Educational Attainment, Maternal,Educational Attainment, Paternal,Educational Attainments,Educational Level, Maternal,Educational Level, Paternal,Educational Levels,Level, Education,Level, Educational,Level, Maternal Education,Level, Maternal Educational,Level, Paternal Education,Level, Paternal Educational,Levels, Maternal Educational,Maternal Education Levels,Maternal Educational Attainments,Maternal Educational Levels,Paternal Education Levels,Paternal Educational Attainments,Paternal Educational Levels,Status, Maternal Educational,Status, Paternal Educational
D005260 Female Females

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