A Pilot Study of Optic Nerve Ultrasound Following Cardiopulmonary Bypass

September 10, 2021 updated by: Marco Corridore
The purpose of the proposed study is to evaluate the incidence of subtle increases in intracranial pressure (ICP) following cardiopulmonary bypass (CPB) using optic nerve sheath diameter (ONSD), measured by non-invasive ultrasound. As direct measurements of ICP are not feasible following CPB, ONSD will be used as a correlate of ICP. ONSD has been shown to be effective in the ICU and emergency room setting for detecting increased ICP and is an accepted standard for such measurements. The primary hypothesis is that changes in ICP occur following CPB without clinically appreciable signs and symptoms. These changes in ICP will be reflected by changes in ONSD. If there is a significant incidence of sub-clinical cerebral edema and increased ICP postoperatively, these findings may impact postoperative hemodynamic and ventilation goals and techniques.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

14

Phase

  • Not Applicable

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
    • Ohio
      • Columbus, Ohio, United States, 43205
        • Nationwide Children's Hospital

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

No older than 18 years (Child, Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients less than 18 years of age undergoing cardiac bypass.

Exclusion Criteria:

  • None

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: Diagnostic
  • Allocation: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Fontan
Patients undergoing Fontan procedure to redirect blood flow from the lower body to the lungs.
Diagnostic test: Ultrasound
Ocular ultrasound to measure optic nerve sheath diameter (ONSD).
Active Comparator: Non-Fontan
Patients undergoing other cardiac surgeries requiring cardiopulmonary bypass.
Diagnostic test: Ultrasound
Ocular ultrasound to measure optic nerve sheath diameter (ONSD).

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Optic Nerve Sheath Diameter
Time Frame: Day of surgery
Optic nerve sheath diameter normal values: ≤4.0 mm for patients <1 year and ≤4.5 mm used for patients ≥1 year of age, thus there is potential for worse outcomes with higher diameters.
Day of surgery

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Optic Nerve Sheath Diameter: Short Versus Long Cardiopulmonary Bypass (CPB) Time
Time Frame: Day of surgery
Short CPB time defined as <100 minutes. Long CPB time defined as ≥ 100 minutes.
Day of surgery

Collaborators and Investigators

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

Sponsor

Marco Corridore

Investigators

  • Principal Investigator: Marco Corridore, MD, Nationwide Children's Hospital

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)

April 24, 2019

Primary Completion (Actual)

January 16, 2020

Study Completion (Actual)

January 16, 2020

Study Registration Dates

First Submitted

November 27, 2018

First Submitted That Met QC Criteria

November 27, 2018

First Posted (Actual)

November 28, 2018

Study Record Updates

Last Update Posted (Actual)

September 13, 2021

Last Update Submitted That Met QC Criteria

September 10, 2021

Last Verified

September 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • IRB18-01209

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

No

Studies a U.S. FDA-regulated device product

Yes

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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