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Intracranial pressure and cerebral blood flow velocity in preterm infants with posthaemorrhagic ventricular

W J Maertzdorf1, J S H Vles, E Beuls

  • 1Department of Neonatology, University Hospital Maastricht, The Netherlands. wma@skin.azm.nl

Archives of Disease in Childhood. Fetal and Neonatal Edition
|October 23, 2002
PubMed

Insights

Cerebrospinal fluid (CSF) drainage in preterm infants with posthaemorrhagic ventricular dilatation is effective when guided by intracranial pressure (ICP) and cerebral blood flow velocity (CBFV). Optimal CSF tapping occurs when ICP is around 6 cm H2O, avoiding drainage if ICP is too low or high.

Area of Science:

  • Neonatal medicine
  • Pediatric neurology
  • Critical care

Background:

  • Posthaemorrhagic ventricular dilatation (PHVD) is a common complication in preterm infants.
  • Effective management of PHVD is crucial to prevent neurological damage.
  • Current drainage protocols lack precise guidance based on physiological parameters.

Purpose of the Study:

  • To determine optimal cerebrospinal fluid (CSF) volume for tapping in preterm infants with PHVD.
  • To correlate CSF drainage volume with intracranial pressure (ICP) and cerebral blood flow velocity (CBFV).
  • To establish evidence-based guidelines for CSF drainage in this population.

Main Methods:

  • Subcutaneous ventricular catheter reservoirs were used for repetitive CSF drainage in 22 preterm infants.
  • CSF volume of 5 ml/kg body weight was removed twice daily.
  • ICP and CBFV were measured before and after CSF tapping.

Main Results:

  • CSF tapping did not significantly improve CBFV if post-tapping ICP exceeded 7 cm H2O.
  • CSF tapping had no effect on CBFV if pre-tapping ICP was below 6 cm H2O.
  • A slight correlation was observed between ICP and CBFV in longitudinal studies.

Conclusions:

  • Guided CSF drainage using ICP and CBFV is a potentially useful technique for PHVD in preterm infants.
  • An ICP threshold of approximately 6 cm H2O is identified as a critical point for effective CSF drainage.
  • This study provides a basis for refining CSF drainage strategies in neonatal care.
Abstract

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