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The Use of Near Infrared Spectroscopy (NIRS) to Estimate Intracranial Pressure (ICP)

Completed
Conditions
Intracranial Hypertension
Registration Number
NCT01850069
Lead Sponsor
University of Virginia
Brief Summary

The aim of this study is to determine whether we can predict the intracranial pressure using near infra-red spectroscopy

Detailed Description

The management of intracranial hypertension requires the presence of an intracranial pressure monitor. We are investigating whether the waveforms obtained from a near infrared spectroscopy device can predict what the intracranial pressure is non-invasively.

* Patients with intracranial hypertension who are intubated and ventilated in the ICU will be recruited

* we will record there intracranial pressure and systemic arterial pressure

* recordings from the near infrared device will be recorded and analysed off-line

* we will correlate the waveform tracings from near infrared spectroscopy and the arterial tracing

Recruitment & Eligibility

Status
COMPLETED
Sex
All
Target Recruitment
24
Inclusion Criteria

Patients with an intracranial pressure monitor and arterial catheter who are admitted to the ICU

Exclusion Criteria

Less than 18 years

Study & Design

Study Type
OBSERVATIONAL
Study Design
Not specified
Primary Outcome Measures
NameTimeMethod
Intracranial elastanceParticipants will be followed while an arterial line and intracranial pressure monitor is present duing the ICU admission. This is expected to be an average of 5 days.

Intracranial elastance (δP/δV)will be measured by dividing the pulse pressure of an invasive arterial blood pressure by the amplitude of high frequency oscillations in the near infrared (NIR) absorbance waveforms.

Secondary Outcome Measures
NameTimeMethod

Trial Locations

Locations (1)

University of Virginia

🇺🇸

Charlottesville, Virginia, United States

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