Effect of Delayed Remote Ischemic Preconditioning on Myocardial Injury

Status Completed

Clinical Trial Summary

The purpose of this study is to evaluate delayed myocardial protective effect of RIPC in patients undergoing cardiac valve replacement surgery.

Clinical Trial Description

Ischemic preconditioning is one of the strategies that can reduce perioperative myocardial injury. It is a concept that briefly induced ischemia and reperfusion before the myocardial injury can reduce the myocardial injury. But it is difficult to apply ischemic preconditioning in operative field, because cross-clamping of aorta or coronary artery is difficult and invasive. Afterward concept of remote ischemic preconditioning(RIPC) has introduced that ischemia of remote organs like kidneys, skeletal muscles can reduce distant myocardial injury.

It is known that myocardial protective effect of ischemic preconditioning have biphasic pattern. Early protective effect wanes after a few hours, then recurs after 24-48 hours, and can persist for up to 3-4 days. It is called second window of preconditioning or delayed ischemic preconditioning. Delayed ischemic preconditioning is similar to early ischemic preconditioning in mechanism but it is different that it produces protein that can mediate myocardial protection effect.

Unlike ischemic preconditioning, it is little known about delayed effect of RIPC. RIPC can be done by applying compression cuff on upper or lower extremities and it is noninvasive and easy to deliver compared to ischemic preconditioning that is done by aorta or coronary artery clamping.

Delayed ischemic preconditioning is performed one day before the surgery, and it is safe and easy to apply RIPC in a clinical setting. And in this study investigators are going to evaluate cardioprotective effect of delayed RIPC. Myocardial injury can be predicted by elevation of cardiac enzyme. Investigators are going to perform RIPC one day before the valve replacement surgery and compare troponin I with control group to assess cardioprotective effect of delayed RIPC. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Prevention

Related Conditions & MeSH terms

Myocardial Injury

Clinical Trial Details

NCT number	NCT01903161
Study type	Interventional
Source	Seoul National University Hospital
Contact
Status	Completed
Phase	N/A
Start date	May 2013
Completion date	January 2015

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Effect of Delayed Remote Ischemic Preconditioning on Myocardial Injury — RIPC

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms