brain pressure Intracranial pressure
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Patients aged >18 year old, scheduled for elective surgery under general anesthesia with a planned duration of the procedure > 30 min that can be routinely performed with a ETI.
Exclusion criteria
Exclusion criteria: - Surgery of the eye an eye region - Neurosurgical procedure and neurosurgical procedure in the past - Neurological disorders - Bilateral eye trauma - Glaucoma - Mentally retarded patients - Contraindications for the use of lidocaine e.g.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Difference in optic nerve sheet diameter in millimetre before, during and after intubation between both groups. | — |
Secondary
| Measure | Time frame |
|---|---|
| Time taken for the ONSD to return back to its initial value once the patients is intubated. | — |
Countries
The Netherlands