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NIMIP: Non Invasive Measurement of the Intracranial Pressure

NCT01685450 · Status: UNKNOWN · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 25

Last updated 2012-09-14

No results posted yet for this study

Summary

The intracranial pressure (ICP), defined by the hydrostatic pressure of the cerebrospinal fluid (CSF), is a key parameter for diagnosing and treating several neurosurgical diseases. Continuous ICP monitoring has an important place in neuro-intensive care for patients with severe head trauma and severe meningeal hemorrhage.

Until now the assessment of ICP requires invasive methods, with a pressure transducer either within the ventricular CSF or within the brain parenchyma. The pressure sensor placement is performed in a neurosurgery department. These invasive methods have also disadvantages: highest risk of infections, catheter misplaced, and risk of bleeding. All these justify the development of a non invasive method. The Biophysics Laboratory (School of Medicine of Clermont-Ferrand) described that the intra-labyrinthic pressure (ILP) modify the functional activities of the outer hair cells in the cochlea.

Cochlear activities' recording is non-invasive and technically simple. A probe is gently inserted into the outer portion of the external ear canal.

Anatomical studies showed communication between the subarachnoid spaces and the perilymphatic compartment by the cochlear aqueduct. Thereby, increases in ICP are transferred to increases in intra-cochlear pressure, which is detected as modifications in cochlear activities.

CSF dynamic tests, as constant flow infusion test, are conducted in patients in the diagnosis of the idiopathic adult hydrocephalus syndrome. Artificial CSF is infused through a lumbar needle, into the CSF space at a constant rate, and the corresponding rise in ICP is registered and analyzed.

The objective of this study is to assess prospectively the accuracy and the precision of a new method for non invasive ICP measurement (using cochlear activities) compared with invasive gold standard CSF pressure measurement during CSF dynamic tests.

Conditions

  • Chronic Hydrocephalus

Interventions

DEVICE

Echodia® hand-held equipment

Sponsors & Collaborators

  • Echodia SAS

    collaborator INDUSTRY

  • University Hospital, Clermont-Ferrand

    lead OTHER

Principal Investigators

  • Laurent SAKKA · University Hospital, Clermont-Ferrand

Study Design

Allocation
NA
Masking
SINGLE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2010-06-30
Primary Completion
2012-09-30
Completion
2012-09-30

Countries

  • France

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01685450 on ClinicalTrials.gov