Critical Closing Pressure During Controlled Increase in Intracranial Pressure - Comparison of Three Methods

Katarzyna Kaczmarska, Magdalena Kasprowicz, Agnieszka Uryga, Leanne Calviello, Georgios Varsos, Zofia Czosnyka & Marek Czosnyka
Critical closing pressure (CrCP) is the arterial blood pressure (ABP) threshold, below which small arterial vessels collapse and cerebral blood flow ceases. Here we aim to compare three methods for CrCPestimation in scenario of a controlled increase in intracranial pressure (ICP), induced by infusion tests performed in patients with suspected normal pressure hydrocephalus (NPH). METHODS: Computer recordings of directly-measured ICP, ABP and transcranial Doppler cerebral blood flow velocity (CBFV), from 37 NPH patients undergoing infusion...

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