Sensitive Troponin I in Out-of-hospital Cardiac Arrest

October 10, 2018 updated by: Marko Noc, University Medical Centre Ljubljana

Sensitive Troponin I and Coronary Anatomy in Patients With Out-of-hospital Cardiac Arrest

Troponin is a major diagnostic criterion of acute myocardial infarction (AMI) which confirms myocardial damage and necrosis. In out-of-hospital cardiac arrest (OHCA) patients its dynamics and diagnostic value is often controversial and has not been well described. Most of prior studies were retrospective, using first generation troponin assays and assessing only admission troponin. The aim of this work is to correlate dynamics of sensitive troponin I with urgent coronary angiography.

Patients resuscitated after OHCA will be prospectively divided in three groups based on the results of their urgent angiographies. Serial assessment of sensitive troponin I will be obtained over initial 48 hours.

We expect admission troponin will not be predictive of AMI. Over next hours troponin levels will be highest in patients with acute coronary lesion, lower in stable obstructive coronary disease and insignificant in non-obstructive coronary disease. We also expect significant difference in highest values and dynamics of troponin in sub-group with spontaneous reperfusion (TIMI flow 2 and 3) comparing to patients with coronary occlusion (TIMI flow 0 and 1). In patients with non-obstructive disease we expect troponin levels to correlate with duration of cardiac arrest, number of external electric shocks and cumulative dose of adrenaline administered.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

159

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

  • Slovenia
      • Ljubljana, Slovenia, 1000
        • University Medical Centre Ljubljana

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

Sampling Method

Non-Probability Sample

Study Population

Comatose survivors after out-of-hospital cardiac arrest admitted to UMC Ljubljana

Description

Inclusion Criteria:

  • female and male over 18 years old
  • comatose survivors after out-of-hospital cardiac arrest (OHCA)
  • absence of an obvious non-coronary cause
  • urgent coronary angiography at admittance
  • less than 3 hours from OHCA to first troponin assessment at admittance

Exclusion Criteria:

  • sub-acute myocardial infarction
  • coronary spasms or in-stent thrombosis within first 48 hours after admission
  • Coronary surgery or death within first 48 hours after admission

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

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Acute coronary syndrome culprit coronary lesion
Other: Blood sample collection
Eight blood samples in each patient within 48 hours to perform Troponin I measurement.
Stable obstructive coronary artery disease
Other: Blood sample collection
Eight blood samples in each patient within 48 hours to perform Troponin I measurement.
Non-obstructive coronary artery disease
Other: Blood sample collection
Eight blood samples in each patient within 48 hours to perform Troponin I measurement.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Peak Troponin I value
Time Frame: Within 48 hours after hospital admission
Peak troponin I values will be compared among 3 groups with different coronary anatomy
Within 48 hours after hospital admission

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Admission troponin I value
Time Frame: Within 3 hours of cardiac arrest
Admission troponin I will be compared among 3 groups with different coronary anatomy
Within 3 hours of cardiac arrest
Peak troponin I value in acute coronary syndrome group
Time Frame: Within 48 hours after hospital admission
Peak troponin I values will be compared among group with coronary artery occlusion and group with spontaneous reperfusion
Within 48 hours after hospital admission

Collaborators and Investigators

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

Sponsor

University Medical Centre Ljubljana

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

October 1, 2011

Primary Completion (Actual)

October 1, 2018

Study Completion (Actual)

October 1, 2018

Study Registration Dates

First Submitted

March 8, 2016

First Submitted That Met QC Criteria

March 14, 2016

First Posted (Estimate)

March 18, 2016

Study Record Updates

Last Update Posted (Actual)

October 11, 2018

Last Update Submitted That Met QC Criteria

October 10, 2018

Last Verified

October 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • TnI OHCA

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

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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