Influence of Anesthesia in the Ultrassound measurement of the Optic Nerve in Gynecological Surgeries

Not Applicable

Recruiting

• Conditions: Adenomyosis; G11.561.170.505; endometriosis; optic nerve; uterine neoplasia

• Registration Number: RBR-7jjj2pw
• Lead Sponsor: niversidade Estadual de Campinas

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2022-08-23
• Last Update Posted: 29 May 2023
• Study Completion: 2024-12-30

Recruitment & Eligibility

• Status: Recruiting
• Sex: Female
• Target Recruitment: Not specified

Inclusion Criteria

Women; Older than 18 years; Laparoscopic gynecological surgery requiring steep Trendelemburg positioning; Pelvic oncologic surgery requiring steep Trendelenburg positioning; Accept to participate in the study.

Exclusion Criteria

Surgical procedure expected to take less than 120 minutes; Ocular pathologies that prevent the measurement of the optic nerve sheath diameter; History of intracranial hypertension; Active neurological diseases; History of transient ischemic attack; Presence of carotid disease; cerebral edema; Glaucoma

Study & Design

• Study Type: Intervention
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Measurement of the optic nerve sheath diameter through ultrasound. The assessment will be performed using a portable ultrasound device and linear transducer (6 - 13 MHz), which will be positioned over the eyeball with closed eyelids, a layer of gel and without manual pressure. Transducer angulation adjustments will be necessary to obtain the best contrast image in the axial plane between the retrobulbar adipose tissue and the vertical hypoechoic band, representing the optic nerve. The measurement will be performed three millimeters posterior to the optic disc in both eyes and the average of these measurements will be used as data. It is expected that the total venous anesthesia group will present lower increases in the DBNO measurement compared to balanced anesthesia

Secondary Outcome Measures

Name	Time	Method
Patients in the intervention group will have lower scores of pain, nausea and vomiting (PONV), agitation, mental confusion, drowsiness and delirium