- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01796015
Intracranial Hypertension and Optic Nerve Sheath Diameter (DENO)
Intracranial Hypertension Detection Using Optic Nerve Sheath Diameter Measurement in Children
Intracranial hypertension (ICH) is a mortality risk factor in severe traumatic brain injury (TBI), in purulent meningitis, in hepatic encephalopathy and in Reye's syndrome. It is also a risk factor for severe neurologic sequelae in survivors. Intracranial pressure (ICP) monitoring is likely to guide therapeutics, and certain research on adults or on children, suggest that IH therapeutic approach, for instance for bacterial meningitis, would improve the prognosis. Two monitoring techniques are currently recommended. They are reference methods for ICP measure :
- monitoring with intraventricular catheter,
- intra-parenchymal monitoring using optical fiber catheter. Non invasive methods have been suggested, including ultrasound measurement of optic nerve sheath diameter (ONSD) which is the most interesting one. The ONSD measured ultrasonically is correlated with ICP level in adults with severe TBI. A diameter over 5,9 mm predicts ICH within the first 24 hours. In children, ONSD average values have been worked out, and an ONSD increase is found in children suffering from hydrocephalus with IH and in children with TBI. ICH precocious detection is fundamental in children sensitive to ICH because their cerebral development is not finished yet. Difficulties met for ICP monitoring implementation in infants and its invasive nature are often disliked by clinicians. A non-invasive exam is then essential to allow a better care of children with ICH in intensive care unit.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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-
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Grenoble, France
- Pediatric Critical Care Unit, CHU La Tronche
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Rhône Alpes
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Bron, Rhône Alpes, France, 69677
- Pediatric Critical Care Unit, Hôpital Femme Mère Enfant ,Hospices Civils de Lyon
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
For the 97 patients:
- children from 2 months to 16 years
- in the intensive care unit
- TBI : moderate (GCS between 9 and 12) to severe (GCS <9), whatever the mechanism involved
- informed consent form signed by parents
Non inclusion Criteria:
- obesity (BMI > 97th percentile for the age)
- patient already under replacement therapy.
- patient taking AEDs
- patient with long-term systemic corticosteroid therapy
- history of neurological disease or learning difficulties
- no covered by a national health insurance
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Diagnostic
- Allocation: Non-Randomized
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: For the 97 patients
|
Description of the ONSD ultrasound: ONSD is measured 3 mm behind the globe and perpendicularly to the optic nerve axis (2 dimensions mode). For each optic nerve, 2 measures are performed: 1 sagittal and 1 transverse. The patient is positioned in 30° dorsal elevation. Gel is applied on the eyelid and a 7,5 MHz probe is used. At the same time and on the same side, a transcranial Doppler is performed using a 2 MHz probe placed on the temple. Are measured: systolic velocity, mean velocity, diastolic velocity, resistance index and pulsatility index. As ONSD measures cannot be done blinded (regarding ICP monitoring), a centralised evaluation (by 2 experts) of the recorded sonograms is planned. |
Other: For the control group
one single ONSD in addition to their usual care (4 measurements: 1 transverse and 1 sagittal for each eye) in the morning in absence of painful sensation
|
Description of the ONSD ultrasound: ONSD is measured 3 mm behind the globe and perpendicularly to the optic nerve axis (2 dimensions mode). For each optic nerve, 2 measures are performed: 1 sagittal and 1 transverse. The patient is positioned in 30° dorsal elevation. Gel is applied on the eyelid and a 7,5 MHz probe is used. At the same time and on the same side, a transcranial Doppler is performed using a 2 MHz probe placed on the temple. Are measured: systolic velocity, mean velocity, diastolic velocity, resistance index and pulsatility index. As ONSD measures cannot be done blinded (regarding ICP monitoring), a centralised evaluation (by 2 experts) of the recorded sonograms is planned. |
Other: For the learning curve
minimum 15 ONSD ultrasounds will be performed by each of the 15 intensive care doctor or interns expected.
One ONSD ultrasound corresponds to 2 measurements: 1 transverse and 1 sagittal.
Each volunteer will have maximum 30 ONSD ultrasound measures over a 1 month period.
|
Description of the ONSD ultrasound: ONSD is measured 3 mm behind the globe and perpendicularly to the optic nerve axis (2 dimensions mode). For each optic nerve, 2 measures are performed: 1 sagittal and 1 transverse. The patient is positioned in 30° dorsal elevation. Gel is applied on the eyelid and a 7,5 MHz probe is used. At the same time and on the same side, a transcranial Doppler is performed using a 2 MHz probe placed on the temple. Are measured: systolic velocity, mean velocity, diastolic velocity, resistance index and pulsatility index. As ONSD measures cannot be done blinded (regarding ICP monitoring), a centralised evaluation (by 2 experts) of the recorded sonograms is planned. |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Primary (sensitivity and specificity of echographic measurement of ONSD)
Time Frame: To determine diagnostic performance (sensitivity and specificity) of ICH thanks to ultrasound measurement of ONSD, (15 minutes ,before invasive ICP monitoring)
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Sensitivity and specificity of echographic measurement of the ONSD (mean value of both eyes), taken 15 minutes ,before invasive ICP monitoring, regarding detection of ICH in children with neurological injury, as compared to reference method for ICH detection (ICP monitoring with intraventricular catheter).
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To determine diagnostic performance (sensitivity and specificity) of ICH thanks to ultrasound measurement of ONSD, (15 minutes ,before invasive ICP monitoring)
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Secondary outcome (1. To draw learning curves before the study begins to find out the number of ultrasound measurement needed)
Time Frame: 1. To draw learning curves before the study begins to find out the number of ultrasound measurement needed (day 0)
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1. To draw learning curves before the study begins to find out the number of ultrasound measurement needed (day 0)
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Etienne JAVOUHEY, MD, HOPITAL FEMME MERE ENFANT HOSPICES CIVILS DE LYON
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2010.598
- 2010-A00890-39 (Other Identifier: ID-RCB)
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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