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Table 1 Comparison of CSF dynamics in Groups A (Post traumatic hydrocephalus) versus B (possible iNPH who positively responded to shunt surgery)

From: Cerebrospinal fluid dynamics in non-acute post-traumatic ventriculomegaly

MeanGroup A
(N = 36)
Group B
(N = 45)
p-value
ICPb [mmHg]9.31 ± 4.129.48 ± 4.57ns
Rout [mmHg/min/ml]13.53 ± 5.2119 ± 8.91p < 0.001
AMPb [mmHg]0.55 ± 0.391.02 ± 0.72p < 0.05
dAMP [mmHg]1.58 ± 1.212.76 ± 1.50p < 0.001
Slow [mmHg]0.66 ± 0.681.26 ± 1.5ns
AMP-P slope0.09 ± 0.050.14 ± 0.08p < 0.05
Elasticity [1/ml]0.19 ± 0.130.19 ± 0.1ns
RAPb0.57 ± 0.180.38 ± 0.21ns
RAPinf0.95 ± 0.070.92 ± 0.075ns
  1. Results are shown as mean ± SD. ICPb: Intracranial pressure at baseline. Rout: resistance to out flow. AMP: fundamental pulse amplitude of ICP. dAMP: AMP plateau—AMP baseline. Slow: magnitude of slow waves of ICP. AMP-P slope: slope of the line derived from ICP-AMP linear regression. Elasticity: [1/ml]. RAPb: compensatory reserve index (moving correlation coefficient between ICP and AMP) at baseline. RAPinf: RAP during infusion
  2. ns not significant