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RECRUITINGOBSERVATIONAL

The Effect of a Laryngeal Mask Airway on Optic Nerve Sheath Diameter

Important: This information is not medical advice. Talk to your doctor about whether a clinical trial is right for you.

About This Trial

The goal of this observational trial is to study the effect of a laryngeal airway mask on the optic nerve sheath diameter, as a surrogate for intracranial pressure. The optic nerve sheath diameter of participants will be measured under general anesthesia, before, during and after insertion of a laryngeal airway mask.

Who May Be Eligible (Plain English)

Who May Qualify: - In order to be eligible to participate in this study, a subject must meet all of the following criteria: aged 18 years or older, ASA I or ASA II, scheduled for elective surgery under general anesthesia, with a planned duration of \> 30 minutes, that can be routinely performed with a LMA. Who Should NOT Join This Trial: - Scheduled for head or neck surgery - Scheduled for neurosurgery - Scheduled for laparoscopic or thorascoscopic procedures - Scheduled for procedures that require Trendelenburg or anti-Trendelenburg positioning - Neurological disorders - Glaucoma - History of bilateral eye related trauma - Intellectual disability Always talk to your doctor about whether this trial is right for you.

Original Eligibility Criteria

View original clinical language
Inclusion Criteria: * In order to be eligible to participate in this study, a subject must meet all of the following criteria: aged 18 years or older, ASA I or ASA II, scheduled for elective surgery under general anesthesia, with a planned duration of \> 30 minutes, that can be routinely performed with a LMA. Exclusion Criteria: * Scheduled for head or neck surgery * Scheduled for neurosurgery * Scheduled for laparoscopic or thorascoscopic procedures * Scheduled for procedures that require Trendelenburg or anti-Trendelenburg positioning * Neurological disorders * Glaucoma * History of bilateral eye related trauma * Intellectual disability

Treatments Being Tested

OTHER

optic nerve sheath diamater

Measurement of optic nerve sheath diameter

Locations (1)

Erasmus Medisch Centrum
Rotterdam, Netherlands