Intracranial pressure is usually measured by invasive methods requiring an intracranial sensor. There is no non-invasive monitoring method recognized as a gold standard. Tympanometry would make it feasible to evaluate intracranial pressure through sensitive and specific changes in the energy absorbance of the middle ear. It could represent a non-invasive method of monitoring intracranial pressure. This is a prospective monocentric longitudinal study. All adult patients in intensive care for head trauma, intracranial hypertension, or after cranial surgery and requiring invasive monitoring of ICP will be included after their non-opposition has been collected. In a group of 10 controls, multifrequency tympanometry will be performed in the standing position, in the 0° supine position and in the Tredelenburg position at -17°.
Study Type
OBSERVATIONAL
Enrollment
41
Measurement once or twice a day and at every change of more than 10 mmHg in ICP, over the entire period of time that ICP is measured by a probe or DVE
Patient: gender, weight/height, age, etiology of ICP entry, reason for ICP monitoring, presence of external (otoscopy), middle (otoscopy + CT) or internal (CT) ear abnormality, presence of inclusion and non-inclusion criteria, measurement of patient tilt. healthy subjects: gender, weight/height, age, presence of abnormality of the external (otoscopy), middle (otoscopy) or internal ear (questioning), presence of inclusion and non-inclusion criteria...
a single measure
Chu Dijon Bourogne
Dijon, France
Volume of the ear canal as a function of intracranial pressure
Time frame: Approximately on the 10th day
Width between conductance peaks of tympanometry at 2kHz as a function of intracranial pressure
Time frame: Approximately on the 10th day
Middle ear resonance frequency as a function of intracranial pressure
Time frame: Approximately on the 10th day
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