Optic Nerve Sheath Diameter, Carotid Duplex and Transcranial Duplex as a Prognostic Factor

Optic Nerve Sheath Diameter, Carotid Duplex and Transcranial Duplex as a Prognostic Predicting Factor in Post-cardiac Arrest Patients

Optic nerve sheath diameter (ONSD) had been proved to be associated with increased intracranial pressure and can be used as one of the prognostic factors in cardiac arrest patients. It is simple, quick and can be measured repeatedly. Carotid duplex and transcranial duplex(TCD) provide rapid, noninvasive, real-time measures of cerebrovascular function. It can be used to assess the vascular territory by measuring blood flow, and to evaluate factors include brain perfusion, plaque morphology, and patency of intracranial collaterals. Hence, it could act as a crucial role in neuroprognosis in post-arrest patients. In this study, the investigator aimed to analyze the ONSD diameters, ONSD/external transverse diameter (ETD) ratio, carotid duplex and transcaranial duplex parameters in different stages of post-cardiac arrest care, demographic characteristics and resuscitation information with the neurological outcome of post-cardiac arrest patients. The ONSD diameter, and ONSD/ETD ratio were compared with age-, and sex-matched normal volunteers.

Study Overview

• Status: Recruiting
• Conditions: Neurologic Dysfunction

Detailed Description

Prediction of the neurological outcome in resuscitated post-cardiac arrest patients is important to tailor appropriate management plans. Brain imaging, electrophysiological evaluations, biomarkers all take part in neuroprognosis in cardiac arrest patients, however, these modalities are more expensive or not suitable to repeat in a short time. Optic nerve sheath diameter (ONSD) had been proved to be associated with increased intracranial pressure2 and can be used as one of the prognostic factors in cardiac arrest patients. It is simple, quick and can be measured repeatedly. Carotid duplex and transcranial duplex(TCD) provide rapid, noninvasive, real-time measures of cerebrovascular function. It can be used to assess the vascular territory by measuring blood flow, and to evaluate factors include brain perfusion, plaque morphology, and patency of intracranial collaterals.

Hence, it could act as a crucial role in neuroprognosis in post-arrest patients. In this study, the investigator aimed to analyze the ONSD diameters, ONSD/ETD ratio, carotid duplex and transcaranial duplex parameters in different stages of post-cardiac arrest care, demographic characteristics and resuscitation information with the neurological outcome of post-cardiac arrest patients.

• Study Type: Observational
• Enrollment (Estimated): 200

Contacts and Locations

• Study Contact: Name: Wan-Ching Lien, PhD; Phone Number: 65655 +886-223123456; Email: wanchinglien@ntu.edu.tw

Study Locations

• Taiwan
  • Taipei, Taiwan, 100
    • Recruiting
    • National Taiwan University Hospital
    • Contact: Wan-Ching Lien, MD., PhD; Phone Number: 65637 +886-2-23123456; Email: wanchinglien@ntu.edu.tw

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 20 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

Non-traumatic cardiac arrest adult patients achieving return of spontaneous circulation after resuscitation

Description

Inclusion Criteria:

. Non-traumatic cardiac arrest adult patients achieving return of spontaneous circulation after resuscitation

Exclusion Criteria:

• traumatic cardiac arrests
• non-traumatic arrest patients without return of spontaneous circulation after resuscitation

Study Plan

How is the study designed?

Design Details

• Observational Models: Case-Control
• Time Perspectives: Prospective

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort
cardiac arrest survivors
age- and sex-matched controls

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
optic nerve sheath diameter (ONSD)	ONSD measured by ultrasonography during the post-arrest care	7 days
carotid artery resistance	carotid artery resistance measured by ultrasonography during the post-arrest care	7 days
middle cerebral artery resistance	middle cerebral artery resistance measured by ultrasonography during the post-arrest care	7 days

Collaborators and Investigators

• Sponsor: National Taiwan University Hospital
• Investigators: Principal Investigator: Wan-Ching Lien, PhD, National Taiwan University Hospital

Study record dates

Study Major Dates

• Study Start (Actual): December 17, 2019
• Primary Completion (Estimated): December 31, 2026
• Study Completion (Estimated): December 31, 2026

Study Registration Dates

• First Submitted: August 2, 2020
• First Submitted That Met QC Criteria: August 10, 2020
• First Posted (Actual): August 12, 2020

Study Record Updates

• Last Update Posted (Actual): May 21, 2025
• Last Update Submitted That Met QC Criteria: May 18, 2025
• Last Verified: May 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Nervous System Diseases; Neurologic Manifestations
• Other Study ID Numbers: 201911027RINC

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
• product manufactured in and exported from the U.S.: No