Tolerance of Myocardium to Ischemia Injury (TOMIS)

February 2, 2026 updated by: University Hospital, Lille

Morning / Afternoon Variation in Myocardial Ischemia Tolerance

This study aims to understand the impact of time-of-the day on human myocardial tolerance to ischemia-reperfusion by exploring atrial myocardium biopsied during cardiac surgery. Patients scheduled for non-urgent cardiac surgery (coronary artery by-pas graft and/or aortic valve replacement) will be assigned to a morning or an afternoon cardiac surgery based on randomization. Myocardial biopsies will be explored in ex vivo conditions mimicking ischemia-reperfusion.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

88

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

  • France
      • Lille, France, 59000
        • Lille University 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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Patient scheduled for coronary artery bypass graft surgery and/or aortic valve replacement with extra-corporeal circulation
  • Patient in sinus rhythm at the time of surgery
  • Patient older than 18
  • Patient able to understand the information and consent forms

Exclusion Criteria:

  • Medical history of type 2 diabetes, atrial fibrillation or use of class III anti-arhythmic drug
  • left ventricle ejection fraction < 40%
  • Pregnancy
  • Patient in emergency condition

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: Basic Science
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: morning group
cardiac surgery scheduled in the morning
Procedure: cardiac surgery scheduled in the morning
cardiac surgery scheduled in the morning
Other: afternoon group
cardiac surgery scheduled in the afternoon
Procedure: cardiac surgery scheduled in the afternoon
cardiac surgery scheduled in the afternoon

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
ischemia reperfusion injury in ex vivo conditions
Time Frame: the day of the myocardial biopsy
measurement of hs troponin T released by the myocardium samples in the superfusion solution after ex vivo conditions mimicking ischemia-reperfusion
the day of the myocardial biopsy

Collaborators and Investigators

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

Sponsor

University Hospital, Lille

Investigators

  • Principal Investigator: David Montaigne, MD, PhD, Lille University Hospital

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 1, 2016

Primary Completion (Actual)

July 1, 2017

Study Completion (Actual)

July 1, 2017

Study Registration Dates

First Submitted

June 22, 2016

First Submitted That Met QC Criteria

June 23, 2016

First Posted (Estimated)

June 24, 2016

Study Record Updates

Last Update Posted (Actual)

February 5, 2026

Last Update Submitted That Met QC Criteria

February 2, 2026

Last Verified

August 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2014-56
  • 2015-A00864-45 (Other Identifier: ID-RCB number, ANSM)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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