Hammersmith Infant Neurological Examination in low-risk infants born very preterm: a longitudinal prospective study

Dev Med Child Neurol. 2022 Jul;64(7):863-870. doi: 10.1111/dmcn.15201. Epub 2022 Mar 17.

Abstract

Aim: To describe the profile of global and single items of the Hammersmith Infant Neurological Examination (HINE) in a population of low-risk infants born very preterm during the first year of life.

Method: The HINE was performed at 3, 6, 9, and 12 months' corrected age in a population of low-risk infants born preterm with a gestational age of fewer than 32 weeks and with normal or minimal changes on neuroimaging.

Results: A total of 174 infants born preterm (96 males, 78 females; mean gestational age = 27 weeks [SD = 1.8], range 23-31 weeks) fulfilled the inclusion criteria. The 10th centile cut-off score with median and range was reported for the HINE global and subsection scores. A progressive increase in global HINE scores was observed. Most of the single items, especially those related to tone, posture, and reflexes, showed progressive maturation.

Interpretation: Our results, which provide longitudinal data for single-item and global scores in a population of low-risk infants born very preterm, can be used as a reference in both clinical and research settings to monitor early neurological signs in these infants. These data could be used as normative data when examining low-risk infants born preterm.

MeSH terms

  • Female
  • Gestational Age
  • Humans
  • Infant
  • Infant, Extremely Premature*
  • Infant, Newborn
  • Longitudinal Studies
  • Male
  • Neurologic Examination / methods
  • Prospective Studies