Long-term cognitive and neurological outcome of preterm infants with postnatally acquired CMV infection through breast milk

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Abstract

Introduction

Long-term follow-up data on preterm infants with breast milk–acquired postnatal cytomegalovirus (CMV) infection are sparse.

Aim

To systematically evaluate the long-term cognitive outcome and prevalence of cerebral palsy (CP) in patients after postnatal CMV infection.

Patients and methods

All surviving infants <1500 g born in our centre between 1 June 1995 and 1 June 2000, and with postnatal CMV infection acquired at up to 3 months of corrected age, were eligible for our study; this included neurological and neurocognitive assessment, using the Kaufman Assessment Battery for Children (K-ABC) at the age of >4 years. A blinded and controlled matched-pairs design was used with gestational age, gender and date of birth as matching criteria.

Results

Of 50 eligible children, 42 (84%) could be tested. There was no difference in the prevalence of cerebral palsy. Following CMV infection during their hospital stay, infants had significantly lower results in the simultaneous processing scale of the K-ABC (p=0.029) after correction for additional risk factors like socioeconomic status (SES). Results for the sequential and achievement scales were only slightly reduced (p>0.05).

Conclusions

It seems possible that breast milk-acquired CMV infection has a detrimental influence on cognitive development of preterm infants.

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