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Clinical Trial Summary

Primary objective of this study is to assess the accuracy and precision of intracranial pressure (ICP) measurement in patients after traumatic brain injury and subarachnoid hemorrhage when using simultaneous, non-invasive measurement compared to standard, invasive, measurement.

Secondary objective: is to assess the correlation of intracranial pressure (ICP) measurement in patients after traumatic brain injury and subarachnoid hemorrhage between simultaneous, non-invasive measurement and standard, invasive,measurement


Clinical Trial Description

Currently, ICP (Intracranial Pressure) can be measured only using invasive techniques. In a previous (pilot study) a non-invasive technique for measurement of ICP was investigated (based on simultaneously measuring of ophthalmic artery (OA) blood flow parameters in the intracranial (IOA) and extracranial (EOA) segments of the OA with two-depth transcranial Doppler (TCD)). Based on the good results of the previous study, the study should be repeated in order to further validate the new method in more patients and to obtain additional insight with more measurements.

This single centre, observational comparative study shall investigate a new non-invasive ICP absolute value measurement method in patients presenting with TBI, ICH, or secondary edema after stroke or Subarachnoid Hemorrhage (SAH) compared to current standard invasive ICP monitoring methods.Suitable patients are to be recruited soonest after their referral or admission to the Department of Neurosurgery at the Kantonsspital Aarau. Measurement will be done either at the surgical Intensive Care Unit, Stroke Unit ("SIC") or Neurosurgical Intermediate Care Unit ("NCW"). All measurements will be performed on intubated and sedated patients with invasive ICP Monitoring trough an intraparenchymatous or intraventricular probe. In the same patient, several measurements will be allowed daily.

The non-invasive technique for measurement of ICP is based on simultaneously measuring of an ophthalmic artery (OA) blood flow parameters in the intracranial (IOA) and extracranial (EOA) segments of the OA with two-depth transorbital Doppler (TCD) measurements including mechanical head frame for fixation of ultrasonic transducer on the closed eye lid. ICP pressure will be measured non-invasively by using Vittamed 205® device. This device has CE marking since July 2014.

It is planned to recruit 25 patients and to collect 69 independent paired non-invasive and invasive ICP measurements during a 24 months period after study approval. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03227354
Study type Observational
Source Kantonsspital Aarau
Contact Jenny Kienzler
Phone +41 62 838 58 72
Email jenny.kienzler@ksa.ch
Status Not yet recruiting
Phase N/A
Start date September 2017
Completion date September 2019

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