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Published on: March 26, 2019
Intracranial pressure measurement in infants presenting with progressive macrocephaly and enlarged subarachnoid
M Schulz1, S A Ahmadi, B Spors
1Charité Universitätsmedizin Berlin, Augustenburger Platz 1, Berlin, Germany.
Insights
Intracranial pressure (ICP) monitoring in infants with subarachnoid spaces helps determine the need for ventriculo-peritoneal (VP) shunting. Elevated ICP indicates potential benefit from VP shunting, guiding treatment decisions.
Area of Science:
- Pediatric Neurosurgery
- Neurology
- Medical Imaging
Background:
- Subarachnoid spaces in infants present a challenge for treatment decisions like observation or ventriculo-peritoneal (VP) shunting.
- Lack of clear guidelines necessitates further investigation into intracranial pressure (ICP) management.
Purpose of the Study:
- To measure ICP in infants with enlarged subarachnoid spaces.
- To elucidate the necessity of VP shunting based on ICP monitoring.
Main Methods:
- Seven infants with macrocephaly and enlarged CSF spaces underwent continuous ICP monitoring via external ventricular drain.
- Overnight ICP data were analyzed for baseline, mean values, and histogram distribution.
Main Results:
- Three infants with baseline ICP > 10 mmHg received VP shunts.
- One infant with average ICP > 10 mmHg also underwent VP shunting.
- Three infants with ICP < 10 mmHg were managed observationally, showing significant differences in ICP values compared to the shunted group (p < 0.05).
Conclusions:
- Subarachnoid spaces in infants pose a dilemma for neurosurgeons regarding observation versus VP shunting.
- Continuous ICP monitoring can aid in identifying infants who may benefit from VP shunting.
- Risk-benefit analysis of observation and VP shunting is crucial for treatment decisions.
Introduction:
For subarachnomegaly in infants with enlarged external and internal CSF spaces clear treatment decisions, such as observation or ventriculo-peritoneal (VP) shunting, are still lacking. The aim of this study is to measure intracranial pressure (ICP) in these patients to elucidate treatment necessity.
Materials And Methods:
Seven children presenting with macrocephaly, moderately enlarged ventricles, and subarachnoid spaces on magnetic resonance imaging (MRI) without neurological deficits or other CSF-associated pathological conditions were enrolled. Continuous ICP recording was conducted using an external ventricular drain. Data recordings during overnight measurements were analyzed offline to calculate baseline, mean ICP values, and a histogram distribution.
Results:
Mean age at enrollment was 9.4 months (2-22 months). ICP monitoring was conducted for 2.7 ± 1.1 nights (range 2-5 nights) and revealed baseline values above 10 mmHg in three patients, who went on to receive a VP shunt. One patient with average values over 10 mmHg also underwent VP shunting. Three patients displayed both baseline and average ICP values of less than 10 mmHg. Observational management was chosen for this subgroup. Comparing shunted versus the non-shunted group in a histogram analysis the percentages of recorded ICP values above 8, 10, and 15 mmHg were significantly different (p < 0.05).
Conclusion:
Subarachnomegaly in infants remains a dilemma to the treating neurosurgeon. Risks and benefits of observational management options need to be weighed against those of VP shunting. Continuous ICP monitoring may help to identify patients who may potentially benefit from the surgical treatment option.
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