Sevoflurane Versus Propofol on Optic Nerve Sheath Diameter During Anesthesia in Steep Trendelenburg Position

February 26, 2020 updated by: State University of New York - Downstate Medical Center
We will prospectively compare change in ONSD during anesthesia with sevoflurane-only versus anesthesia with propofol-only in two groups of patients undergoing urologic and gynecologic surgery in the steep Trendelenburg position. We hypothesize that there will be a significant decrease in the size of ONSD during transition from sevoflurane-only anesthesia to propofol-only anesthesia.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Steep Trendelenburg positioning is required for optimal surgical exposure for certain procedures, including robotic assisted laparoscopic urologic and gynecologic procedures. The position is associated with increased intracranial pressure (ICP) and its complications such as post-operative vision loss (POVL) and post-op delirium [Lee 2013]. Therefore, it is essential to measure ICP intra-operatively in order to implement real time management. The gold standard for ICP measurement is an external ventricular drain (EVD). However, it is invasive and not practical for the majority of non-neurosurgical procedures. Trans-ocular ultrasound measurement of Optic nerve sheath diameter (ONSD) is a non-invasive alternative for ICP measurement [Tayal et al 2007; Nash et al 2016]. Compared to EVD it is non-invasive, less expensive and efficient. It has been validated as a screening tool for identification of patients with elevated ICP who required treatment in several larger studies [Nash et al 2016; Blecha et al 2017]. During these procedures prior pre-cautions to prevent increased ICP focused on fluid restriction/selection. Ultrasound measurement of ONSD has not been routinely employed. Furthermore, consideration has rarely been given to the benefits of total intravenous anesthesia (TIVA) rather than volatile anesthetics for anesthesia maintenance during these procedures. Considering the complications of increased ICP, sonographic measurement could prove to be a practical method to efficiently monitor the ICP surrogate [Riaz et al 2016; Nash et al 2016; Banerjee et al 2017]. This study will perform intra-operative sonographic ONSD measurements in order to compare the change in ONSD during transition from inhalational maintenance anesthesia (using sevoflurane) to total intravenous anesthesia (TIVA) using propofol.

While other studies have demonstrated that the use of pneumoperitoneum and steep Trendelenburg positioning can lead to an increase in ICP as determined by use of ONSD (Robba et al. 2016), this study describes the added role of ONSD measurement for guiding the choice of anesthesia maintenance (TIVA vs sevoflurane) during surgery in the steep-Trendelenburg position.

Study Type

Interventional

Enrollment (Anticipated)

40

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • New York
      • Brooklyn, New York, United States, 11203-2098
        • Recruiting
        • SUNY Downstate Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

All patients scheduled to undergo surgery in the steep Trendelenburg position at SUNY Downstate Medical Center.

Exclusion Criteria:

< 18 years old Pregnancy Pre-existing eye disease Prior ophthalmic surgery Inability to tolerate steep Trendelenburg position Patient refusal

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: PREVENTION
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: SINGLE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: Group A
Group A will begin anesthesia maintenance with sevoflurane-only, then will be switched after 30 minutes to anesthesia with propofol-only.
Drug: Propofol 10 MG/ML
This study will perform intra-operative sonographic ONSD measurements in order to compare the change in ONSD during transition from inhalational maintenance anesthesia (using sevoflurane) to total intravenous anesthesia (TIVA) using propofol.
EXPERIMENTAL: Group B
Group B will begin anesthesia with propofol-only then will be switched to sevoflurane-only.
Drug: Sevoflurane Inhalant Product
This study will perform intra-operative sonographic ONSD measurements in order to compare the change in ONSD during transition from inhalational maintenance anesthesia (using sevoflurane) to total intravenous anesthesia (TIVA) using propofol.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Sevoflurane Versus Propofol on Optic Nerve Sheath Diameter During Anesthesia in Steep Trendelenburg Position
Time Frame: 2 years
1. Percentage of change in ONSD during anesthesia with sevoflurane-only versus propofol-only in two groups of patients undergoing urologic and gynecologic surgery in the steep Trendelenburg position.
2 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

State University of New York - Downstate Medical Center

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (ACTUAL)

January 14, 2020

Primary Completion (ANTICIPATED)

January 17, 2022

Study Completion (ANTICIPATED)

January 17, 2022

Study Registration Dates

First Submitted

February 26, 2020

First Submitted That Met QC Criteria

February 26, 2020

First Posted (ACTUAL)

February 28, 2020

Study Record Updates

Last Update Posted (ACTUAL)

February 28, 2020

Last Update Submitted That Met QC Criteria

February 26, 2020

Last Verified

February 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1281970-5

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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