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

Launched by ERASMUS MEDICAL CENTER · May 3, 2024

Keywords

ClinConnect Summary

This clinical trial is studying how a device called a laryngeal mask airway (LMA) affects the optic nerve sheath diameter, which can help us understand changes in pressure inside the skull. The trial aims to find out if using an LMA during general anesthesia impacts this measurement, as it can be an indicator of intracranial pressure, or pressure within the brain.

To participate in this study, you need to be at least 18 years old and scheduled for certain types of elective surgery that will last more than 30 minutes. You should not have any neurological disorders or eye conditions like glaucoma, and you should not be having surgery on your head or neck. If you join the trial, your optic nerve sheath diameter will be measured before, during, and after the LMA is put in place while you are under general anesthesia. This study is currently recruiting participants and welcomes individuals of all genders.

Gender

ALL

Eligibility criteria

• 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