Related Experiment Videos
Changes in cerebral artery blood flow velocity after intermittent cerebrospinal fluid drainage
1Children Nationwide Neonatal Centre, King's College Hospital, London.
Insights
Intermittent cerebrospinal fluid (CSF) drainage in premature infants with posthaemorrhagic hydrocephalus significantly increased cerebral blood flow velocity and decreased intracranial pressure. This intervention impacts cerebral haemodynamics in these vulnerable patients.
Area of Science:
- Neonatal neurology
- Pediatric neurosurgery
- Cerebrovascular physiology
Background:
- Posthaemorrhagic hydrocephalus is a common complication in premature infants.
- Elevated intracranial pressure in hydrocephalus can compromise cerebral perfusion.
- Understanding the haemodynamic effects of interventions is crucial for management.
Purpose of the Study:
- To investigate the acute effects of intermittent cerebrospinal fluid (CSF) drainage on cerebral blood flow velocity and haemodynamics.
- To assess changes in anterior cerebral artery blood flow before and after CSF drainage in premature infants with hydrocephalus.
Main Methods:
- Doppler ultrasound was employed to measure blood flow velocity in the anterior cerebral artery.
- Measurements were taken in six premature infants with posthaemorrhagic hydrocephalus on 23 occasions.
- Cerebrospinal fluid (CSF) pressure was monitored alongside blood flow velocity.
Main Results:
- A significant increase in mean blood flow velocity was observed after CSF drainage (+5.6 cm/s).
- A decrease in velocity waveform pulsatility accompanied the increased blood flow velocity.
- Cerebrospinal fluid (CSF) pressure demonstrated a significant reduction post-drainage.
Conclusions:
- Intermittent CSF drainage is associated with acute, significant changes in cerebral haemodynamics in premature infants with posthaemorrhagic hydrocephalus.
- The procedure leads to improved cerebral blood flow and reduced intracranial pressure.
- These findings highlight the haemodynamic impact of CSF drainage in this patient population.
Abstract:
Doppler ultrasound was used to measure blood flow velocity in the anterior cerebral artery of six premature infants with posthaemorrhagic hydrocephalus, before and after intermittent cerebrospinal fluid (CSF) drainage, on 23 occasions. There was a significant increase in mean blood flow velocity after the drainage procedures (+5.6 cm/s, 95% confidence interval +2.9 to +8.3 cm/s), which was accompanied by a decrease in velocity waveform pulsatility. CSF pressure also fell significantly. In patients with posthaemorrhagic hydrocephalus, intermittent CSF drainage was associated with acute changes in cerebral haemodynamics.