- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03040284
Non Invasive Measurements of Intracranial Pressure After Aneurysmal Subarachnoid Hemorrhage (HEMAPIC)
In patients at risk of increased intracranial pressure (ICP), ICP measurements require invasive transducers, usually with insertion of a catheter into the cranium, or through a spinal tap. These invasive modalities involve risks and pain and they can be done only in specialized care units, with a high associated cost.
A novel method for detecting changes in ICP has developed recently. The auditory hair cells emit sounds and electric signals in response to sound, which can be easily detected and measured non-invasively with the help of a microphone probe placed in the external ear canal or regular electrodes. Indeed, the cochlear aqueduct connects the cerebrospinal fluid (CSF) spaces to the inner ear in such a way that ICP and inner-ear fluid pressure equalize within seconds.
The evaluation of intracranial hypertension by increased ICP (invasive) is not systematically used after aneurysmal subarachnoid hemorrhage. It is then detected by using routine clinical signs of hydrocephalus or another disorder of cerebrospinal liquid flow, in combination with a standard imaging method (TDM).
The measurement of noninvasive ICP could allow earlier detection of hydrocephalus or another disorder of cerebrospinal liquid flow, and evaluate whether the increase in ICP precedes patient clinical worsening and / or imaging.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
In patients at risk of increased intracranial pressure (ICP), ICP measurements require invasive transducers, usually with insertion of a catheter into the cranium, or through a spinal tap. These invasive modalities involve risks and pain and they can be done only in specialized care units, with a high associated cost.
A novel method for detecting changes in ICP has developed recently. The auditory hair cells emit sounds and electric signals in response to sound, which can be easily detected and measured non-invasively with the help of a microphone probe placed in the external ear canal or regular electrodes. Indeed, the cochlear aqueduct connects the cerebrospinal fluid (CSF) spaces to the inner ear in such a way that ICP and inner-ear fluid pressure equalize within seconds.
The evaluation of intracranial hypertension by increased ICP (invasive) is not systematically used after aneurysmal subarachnoid hemorrhage. It is then detected by using routine clinical signs of hydrocephalus or another disorder of cerebrospinal liquid flow, in combination with a standard imaging method (TDM).
The measurement of noninvasive ICP could allow earlier detection of hydrocephalus or another disorder of cerebrospinal liquid flow, and evaluate whether the increase in ICP precedes patient clinical worsening and / or imaging.
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Clermont-Ferrand, France, 63003
- Recruiting
- CHU Clermont-Ferrand
-
Principal Investigator:
- Paul AVAN
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Patients which had recently (few days) aneurysmal subarachnoid hemorrhage
- Valid tympanometry test at least for one ear
- Between 18 and 75 years of age
- Cochlear response useful at least for an ear which has validate the tympanometry test
- Written informed consent reviewed and signed by patient
- Affiliation to a social security scheme
Exclusion Criteria:
- Invalid tympanometry test for the both ears
- Collect of cochlear responses impossible for the ear or both ear which validate the tympanometry test
- Patient refusal after enlightened information
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Diagnostic
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: aneurysmal subarachnoid hemorrhage
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Presence of an intracranial pressure variation or increase
Time Frame: at day 1
|
Presence of an intracranial pressure variation or increase when physician has diagnosed a clinical or imaging disorder of the cerebrospinal liquid flow with standard diagnose methods (composite outcome measure): clinical signs, TDM and assessment of bifrontal index.
|
at day 1
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Evolution of ICP before and after the development of disorder of the cerebrospinal liquid flow according to clinical sign and/or TDM.
Time Frame: at day 1
|
at day 1
|
Efficiency of the measurement device on repetitive measurement during one year as evaluated by composite outcome measure: clinical signs, TDM.
Time Frame: at day 1
|
at day 1
|
Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- CHU-301
- 2014-A01300-47 (Other Identifier: 2014-A01300-47)
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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