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Effect of Remote Preconditioning in Patients Undergoing Off-pump Coronary Artery Bypass Graft Surgery

This study has been completed.
Information provided by:
Seoul National University Hospital Identifier:
First received: April 28, 2009
Last updated: October 7, 2009
Last verified: October 2009

In recent several clinical trials, remote preconditioning showed very powerful myocardial protection. However, the myocardial protective effect by remote preconditioning was not evaluated on the patients undergoing off pump coronary artery bypass graft surgery (OPCAB).

The investigators hypothesized that the lower limb remote preconditioning could protect the myocardium during the OPCAB. In this study, the investigators will try to evaluate whether remote preconditioning could induce myocardial protection on the OPCAB patients.

Condition Intervention Phase
Ischemic Heart Disease
Procedure: remote ischemic preconditioning
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator)
Primary Purpose: Prevention
Official Title: Effect of Lower Limb Remote Preconditioning on Myocardial Injury in Patients Undergoing Off-pump Coronary Artery Bypass Graft Surgery

Resource links provided by NLM:

Further study details as provided by Seoul National University Hospital:

Primary Outcome Measures:
  • postoperative serum troponin I levels [ Time Frame: postoperatibe 1, 6, 12, 24, 48, 72 hr ]

Enrollment: 68
Study Start Date: March 2009
Study Completion Date: August 2009
Primary Completion Date: July 2009 (Final data collection date for primary outcome measure)
Intervention Details:
    Procedure: remote ischemic preconditioning
    remote ischemic preconditioning (4 x 5 min lower limb ischemia with pneumatic cuff up to 200 mmHg with an intervening 5 min reperfusion; 2 cycles; before and after the coronary anastomosis )
    Other Name: Blood pressure pneumatic cuff
Detailed Description:

In recent two clinical trials on the patients undergoing cardiac surgery, remote preconditioning showed very powerful myocardial protection by simple and safe procedures such as the brief inflation of pneumatic tourniquet on the upper or lower limb. However, despite these impressive results, the clinical studies are lacking yet. Moreover, two previous studies were done on the cardiac surgery with cardiopulmonary bypass. Considering different mechanism, level of myocardial injury and the increasing popularity of OPCAB, we need the clinical study on remote preconditioning with the OPCAB patients.

In this study, we will conduct randomized controlled clinical trials in which the remote preconditioning was induced by lower limb ischemia with double-blinded technique. Myocardial injury will be assessed by postoperative serum troponin I levels and they will be compared with those of control group.


Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Adult patients undergoing elective off pump coronary artery bypass graft surgery

Exclusion Criteria:

  • unstable angina
  • preoperative use of inotropics or mechanical assist device,
  • left ventricular ejection fraction less than 30%,
  • major combined operation such as aortic surgery or carotid endarterectomy,
  • severe liver, renal and pulmonary disease,
  • recent myocardial infarction (within 7 days),
  • recent systemic infection or sepsis (within 7 days)
  • peripheral vascular disease affecting lower limbs
  • amputation of the lower limbs
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Please refer to this study by its identifier: NCT00889811

Korea, Republic of
Seoul National University Hospital
Seoul, Korea, Republic of, 110-744
Sponsors and Collaborators
Seoul National University Hospital
Study Director: YunSeok Jeon, Professor Department of Anesthesiology and Pain Medicine, SNUH
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Jeon, YunSeok, Seoul National University Hospital Identifier: NCT00889811     History of Changes
Other Study ID Numbers: H-0806-060-247
Study First Received: April 28, 2009
Last Updated: October 7, 2009

Keywords provided by Seoul National University Hospital:

Additional relevant MeSH terms:
Heart Diseases
Myocardial Ischemia
Coronary Artery Disease
Cardiovascular Diseases
Vascular Diseases
Coronary Disease
Arterial Occlusive Diseases processed this record on May 25, 2017