Remote Ischemic Postconditioning in Humans

Myocardial Reperfusion Injury Clinical Trial

Official title:

Remote Ischemic Postconditioning. Can it Prevent Myocardial Injury During Percutaneous Coronary Intervention?

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT01113008
• Other study ID #: PI-0327/2008
• Status: Completed
• Phase: N/A
• First received: April 26, 2010
• Last updated: January 11, 2015
• Start date: February 2009
• Est. completion date: May 2012

Study information

• Verified date: January 2015
• Source: Hospital Universitario Virgen de la Victoria
• Contact: n/a
• Is FDA regulated: No
• Health authority: Spain: Ethics Committee
• Study type: Interventional

Clinical Trial Summary

The aim of this study is to evaluate the phenomenon of remote ischemic post-conditioning in humans. The minor myocardial damage associated with percutaneous revascularization procedures may be attenuated by producing controlled ischemia in the arms immediately after carrying out these procedures (remote ischemic post-conditioning). The justification and design of this clinical trial has been reported: Cardiology. 2011;119(3):164-9.

Description:

Percutaneous coronary intervention (PCI) has taken on an important role in the treatment of ischemic heart disease in recent years. However, the beneficial effects of revascularization are partly shadowed by post-reperfusion injury, which accounts for up to half the size of the reperfused myocardial infarct. Several drugs and procedures exist that might protect against this phenomenon. One of the most controversial of these strategies, which has shown promising results in experimental animal models, is remote ischemic post-conditioning. This involves inducing ischemia at a site remote from the heart after an ischemic coronary lesion to reduce the resulting myocardial infarct size.

The myocardial damage produced by ischemia-reperfusion associated with PCI is a known short- and long-term prognostic factor, and is associated with a greater risk of death, myocardial infarction and revascularization during the follow-up.

Our aim is to assess the phenomenon of remote ischemic post-conditioning in patients undergoing PCI, in whom the acute insult on the myocardium is determined by the angioplasty itself. Additionally, we aim to evaluate this phenomenon in a subgroup of diabetic patients, among whom the effectiveness of protective measures against post-reperfusion damage is more questioned.

We have designed a randomized, single-blinded interventional study involving 320 patients (40% diabetics) who are to undergo elective PCI. At the end of the angioplasty procedure, the patients assigned to remote ischemic post-conditioning will undergo three 5-minute cycles of ischemia using a blood-pressure cuff at 200 mmHg, placed on the non-dominant arm, interrupted twice for 5 minutes with the cuff deflated. In the control group the procedure will be limited to placing a deflated blood-pressure cuff (pressure: 0 mmHg) for 25 minutes.

The infarct size will be analyzed from an enzyme curve of troponin I and CK-MB values 0, 8, 16 and 24 hours after the procedure (primary endpoint). Measurements will also be taken of pH and lactate in the baseline sample (0 hours) and at 8 hours, and ultrasensitive C-reactive protein at 0 and 24 hours as a contrasted marker of inflammation in ischemic heart disease.

The follow-up, planned for one year, will seek to determine clinically interesting variables (secondary endpoint), such as readmission due to acute coronary syndrome, heart failure or major arrhythmic events and overall and cardiovascular mortality.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 266
• Est. completion date: May 2012
• Est. primary completion date: February 2012
• Accepts healthy volunteers: No
• Gender: Both
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

1. Patients undergoing PCI due to stable angina

2. Patients undergoing PCI due to unstable angina

3. Patients undergoing PCI due NON Q acute myocardial infarction with normal troponin at inclusion moment (less than 1 ng/ml)

Exclusion Criteria:

1. Acute myocardial infarction during the previous two weeks

2. Chronic renal failure with baseline creatinine above 3 mg/dL

4. Collateral circulation of the revascularized artery (Rantrop >0) 5. Prior treatment with glibenclamide. 6. Inability to receive follow-up, blood test or lack of informed consent.

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Investigator)

Related Conditions & MeSH terms

• Myocardial Reperfusion Injury
• Reperfusion Injury

Intervention

Procedure:
• Remote ischemic postconditioning
Patients assigned to remote ischemic postconditioning will undergo three 5-minute cycles of ischemia using a blood-pressure cuff at 200 mmHg, placed on the non-dominant arm, interrupted twice for 5 minutes with the cuff deflated
• Control group
In the control group the procedure will be limited to placing a deflated blood-pressure cuff (pressure: 0 mmHg) for 25 minutes.

Locations

Country	Name	City	State
Spain	Hospital Clínico Universitario Virgen de la Victoria	Málaga

Sponsors (3)

Lead Sponsor	Collaborator
Hospital Universitario Virgen de la Victoria	FUNDACIÓN IMABIS, Red Temática de Investigación Cooperativa en Enfermedades Cardiovasculares

Country where clinical trial is conducted

Spain, 

References & Publications (11)

Ali ZA, Callaghan CJ, Lim E, Ali AA, Nouraei SA, Akthar AM, Boyle JR, Varty K, Kharbanda RK, Dutka DP, Gaunt ME. Remote ischemic preconditioning reduces myocardial and renal injury after elective abdominal aortic aneurysm repair: a randomized controlled trial. Circulation. 2007 Sep 11;116(11 Suppl):I98-105. — View Citation

Andreka G, Vertesaljai M, Szantho G, Font G, Piroth Z, Fontos G, Juhasz ED, Szekely L, Szelid Z, Turner MS, Ashrafian H, Frenneaux MP, Andreka P. Remote ischaemic postconditioning protects the heart during acute myocardial infarction in pigs. Heart. 2007 Jun;93(6):749-52. Epub 2007 Apr 20. — View Citation

Gritsopoulos G, Iliodromitis EK, Zoga A, Farmakis D, Demerouti E, Papalois A, Paraskevaidis IA, Kremastinos DT. Remote postconditioning is more potent than classic postconditioning in reducing the infarct size in anesthetized rabbits. Cardiovasc Drugs Ther. 2009 Jun;23(3):193-8. doi: 10.1007/s10557-009-6168-5. — View Citation

Hausenloy DJ, Mwamure PK, Venugopal V, Harris J, Barnard M, Grundy E, Ashley E, Vichare S, Di Salvo C, Kolvekar S, Hayward M, Keogh B, MacAllister RJ, Yellon DM. Effect of remote ischaemic preconditioning on myocardial injury in patients undergoing coronary artery bypass graft surgery: a randomised controlled trial. Lancet. 2007 Aug 18;370(9587):575-9. — View Citation

Hoole SP, Heck PM, Sharples L, Khan SN, Duehmke R, Densem CG, Clarke SC, Shapiro LM, Schofield PM, O'Sullivan M, Dutka DP. Cardiac Remote Ischemic Preconditioning in Coronary Stenting (CRISP Stent) Study: a prospective, randomized control trial. Circulation. 2009 Feb 17;119(6):820-7. doi: 10.1161/CIRCULATIONAHA.108.809723. Epub 2009 Feb 2. — View Citation

Iliodromitis EK, Kyrzopoulos S, Paraskevaidis IA, Kolocassides KG, Adamopoulos S, Karavolias G, Kremastinos DT. Increased C reactive protein and cardiac enzyme levels after coronary stent implantation. Is there protection by remote ischaemic preconditioning? Heart. 2006 Dec;92(12):1821-6. Epub 2006 Jul 19. — View Citation

JENNINGS RB, SOMMERS HM, SMYTH GA, FLACK HA, LINN H. Myocardial necrosis induced by temporary occlusion of a coronary artery in the dog. Arch Pathol. 1960 Jul;70:68-78. — View Citation

Jiménez-Navarro M, Gómez-Doblas JJ, Hernández García JM, Alonso-Briales J, García Alcántara A, Gómez G, Rodriguez-Bailón I, de Teresa E. Does angina pectoris the week before protect against first acute myocardial infarction in patients with diabetes mellitus? Am J Cardiol. 2002 Jul 15;90(2):160-2. — View Citation

Murry CE, Jennings RB, Reimer KA. Preconditioning with ischemia: a delay of lethal cell injury in ischemic myocardium. Circulation. 1986 Nov;74(5):1124-36. — View Citation

Staat P, Rioufol G, Piot C, Cottin Y, Cung TT, L'Huillier I, Aupetit JF, Bonnefoy E, Finet G, André-Fouët X, Ovize M. Postconditioning the human heart. Circulation. 2005 Oct 4;112(14):2143-8. Epub 2005 Sep 26. — View Citation

Yellon DM, Hausenloy DJ. Myocardial reperfusion injury. N Engl J Med. 2007 Sep 13;357(11):1121-35. Review. — View Citation

* Note: There are 11 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Maximum Increase of Troponin at 24 Hours		24 hours	No
Secondary	Readmission Due to Acute Coronary Syndrome		12 month	No
Secondary	Cardiovascular Mortality		12 month	No