Effect of Lithotomy Position on Optic Nerve Sheath Diameter
Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18-65
SponsorBaşakşehir Çam & Sakura City Hospital
About this trial
In this study, the effect of increased venous return and increased intra-abdominal pressure on intracranial pressure in the lithotomy position was evaluated.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Patients who give informed consent
Patients who will undergo retrograde intrarenal surgery
Patients who are fully oriented and cooperative
ASA I-II patients
Disqualifiers
Disoriented and uncooperative patients
Patients with BMI>30
Patients who have had previous intracranial surgery
Patients who have had eye surgery before
Trial population
A total of 52 patients, ASA I-II, aged between 18-65, who are scheduled for elective RIRS surgery under general anesthesia will be included.
Trial design
Design model
Case-control
Time perspective
Prospective
Treatments tested in this trial
ultrasound
DeviceMeasurement of optic nerve sheath diameter by ultrasound
Treatment groups
52 Participants
are divided into 1 treatment groupGroup A: Patients who will undergo RIRS surgery1 intervention
Trial outcomes
Primary outcomes
1
Effect of lithotomy position on optic nerve sheath diameter
In patients in the lithotomy position, the linear probe of the ultrasound will be placed on the patient's upper eyelid in a transverse and longitudinal manner without applying compression, and the optic nerve's entry into the orbit will be visualized and measured. The increase in the optic nerve sheath diameter will be recorded by measuring at 7 different times in total.Before general anesthesia (t1), 3 minutes (min.) (t2) and 5 min. (t3) after general anesthesia, 3 min. (t4) and 5 min. (t5) after lithotomy position was given, before lithotomy position was corrected (t6) and when 10 minutes after patients go to the recovery room (t7).
Time frame
intraoperative and postoperative 10 minutesSponsors and contacts
Click on the lead sponsor to view all of their trials.
Başakşehir Çam & Sakura City Hospital
Lead sponsor
Ankara Etlik City Hospital
Collaborator
Source ClinicalTrials.gov