Effect of Optıc Nerve Dıameter ın Tymphanoplasty Surgery Performed ın Lateral Head Posıtıon

Brief summary (registry, in English)

Studies exist to determine the effect of laparoscopic surgical procedures on increased intra-abdominal pressure; these studies include optic nerve sheath diameter (ONSD) measurement in various positions such as trendelenburg and prone, and the effect of the laryngoscope used in intubation on increased intracranial pressure. In these situations, changes in cerebral blood flow and intracranial pressure may occur due to impaired neck venous return. There are no studies in the literature regarding increased osd and consequently increased intracranial pressure in lateral head position.ultrasound for ONSD measurement is a non-invasive, rapid, and easily applicable method for diagnosing changes in intracranial pressure. In tympanoplasty surgeries, the head and neck remain in a lateral position, and venous return in the surgical field may sometimes be compressed due to the procedure. The aim of this study is to determine the effect of lateral head position and variables such as demographic data and surgical duration on increased intracranial pressure. Methods: Patients over 18 years of age, classified as asa ı and ıı, undergoing tympanoplasty surgery under general anesthesia in the lateral head and neck position will be included in the study. Patients' vital signs (arterial blood pressure, heart rate, spo2, and etco2) will be monitored regularly in the operating room before and after surgery. Demographic data (age, gender, weight, height), surgery duration, and postoperative complications will also be recorded. Anesthesia will be administered with 2-4 mg/kg propofol, 0.6 mg/kg rocuronium, and 1-2 mcg/kg fentanyl for induction, and sevoflurane for maintenance. Following intubation, onstitial lateral head and neck (onsd) measurements will be taken by the anesthesiologist at three time intervals (in transverse and sagittal planes). Both onsds will be recorded by ultrasound: T1: 5 minutes in the supine position, T2: at the end of the procedure with the head in the lateral position, and T3: before extubation in the supine position. Postoperative headache and neck pain will be inquired about after waking up and at 1., 6., and 24. hours later.

What you commit to

• Study type: Interventional
• Participants enrolled: 53
• From 1 Jan 2020 to the primary completion date, 1 Jul 2020
• 1 site in 1 country
• Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Who the study is looking for

Age in the registry: 18 years to - · Sex: All · Accepts healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (1)

Sites in registry order. Pick your city on the disease page to sort them by distance.