Minimizing Reperfusion Injury in Patients With Acute Myocardial Infarction (PCinAMI)

January 31, 2014 updated by: Tarek Helmy, University of Cincinnati

The Mechanism of Ischemic Post-conditioning in Humans: Minimizing Reperfusion Injury in Patients With Acute Myocardial Infarction

The size of a heart attack will be decreased by the use of timed balloon inflations to open the blocked blood vessel.

Study Overview

Status

Suspended

Conditions

Intervention / Treatment

Detailed Description

The intervention of "post conditioning" at the time of reperfusion, in patients with acute myocardial infarction (AMI), will attenuate the degree of ischemia-reperfusion injury, as manifested by infarct size. This intervention is hypothesized to be safe in humans.

Study Type

Interventional

Enrollment (Anticipated)

30

Phase

  • Phase 1

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
      • Cincinnati, Ohio, United States, 45267
        • University of Cincinnati

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:

  • STEMI
  • Onset of symptoms within 6 hours
  • TIMI 0 to TIMI 1 flow in infarct related artery

Exclusion Criteria:

  • collaterals to infarct related artery
  • previous infarct in related territory
  • thrombolytics
  • cardiogenic shock
  • TIMI 2 to TIMI 3 flow

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Post conditioning
After 30 seconds of re-established coronary flow following the therapeutic balloon dilatation and deflation, the same balloon will be re-inflated for 30 seconds and then again deflated for 30 seconds. The balloon should be inflated to only occlude the coronary artery. This procedure of balloon inflation/deflation will be performed a total of 3 to 4 times.
Procedure: Post conditioning
after 30 seconds of re-established coronary flow following the therapeutic balloon dilatation and deflation, the same balloon will be re-inflated for 30 seconds and then again deflated for 30 seconds. This procedure of balloon inflation/deflation will be performed a total of 3 to 4 times.
Active Comparator: Usual Care
Usual care for treatment of thrombolysis in myocardial infarction (TIMI) 0 to TIMI 1 flow in occluded infarct related artery. Usual care includes reperfusion of the artery per operator discretion, i.e. primary stenting, thrombectomy, balloon inflation/deflation without timed intervals.
Procedure: Usual Care for STEMI
Usual care for treatment of TIMI 0 to TIMI 1 flow in occluded infarct related artery. Usual care includes reperfusion of the artery per operator discretion, i.e. primary stenting, thrombectomy, balloon inflation/deflation without timed intervals.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Quantitation of infarct size will be done using a modification of University Hospital's standard Single-photon emission computed tomography (SPECT) quantitation software
Time Frame: 6 weeks
6 weeks
Echocardiograms will be analyzed to evaluate left ventricular function. Standard techniques will be used to quantitate ejection fraction and the percentage of left ventricular circumference that is hypokinetic or dyskinetic.
Time Frame: 6 weeks
6 weeks
Venous blood samples troponin, creatine phosphokinase (CPK). This will be done to follow enzyme release and washout, and area data will be available and infarct size/risk area ratios in control and post-conditioning subjects will be compared.
Time Frame: baseline, every 8 hours x 3
baseline, every 8 hours x 3
ECG ST segment resolution immediate post percutaneous coronary intervention(PCI), and daily x 3.
Time Frame: baseline, up to 3 days
baseline, up to 3 days

Collaborators and Investigators

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

Sponsor

University of Cincinnati

Collaborators

Cardiology Research UBC

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

March 1, 2008

Primary Completion (Actual)

May 1, 2010

Study Registration Dates

First Submitted

April 16, 2008

First Submitted That Met QC Criteria

February 17, 2009

First Posted (Estimate)

February 18, 2009

Study Record Updates

Last Update Posted (Estimate)

February 3, 2014

Last Update Submitted That Met QC Criteria

January 31, 2014

Last Verified

January 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • UCIRB07051803

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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