Coronary Artery Bypass Grafting: Factors Related to Late Events and Saphenous Graft Patency

September 16, 2008 updated by: Centro Cardiologico Monzino
The purpose of this study is to determine the relations between conventional and unconventional risk factors and adverse clinical events at follow-up (including coronary bypass patency) in patients undergoing surgical myocardial revascularization.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Coronary artery bypass grafting represents one of the most frequent surgical procedure performed in the United States and Europe. The clinical benefit of myocardial revascularization is related to freedom of adverse cardiovascular events and to graft patency, above all of great saphenous vein, which is nowadays the main autologous vessel used for grafting coronaries different from anterior interventricular artery. Unfortunately, phenomena leading to early and, above all, late complications and to graft occlusion are not fully clarified and it so not possible to explain interindividual and temporary variability of progressive stenosis rate only on the basis of classical atherosclerosis risk factors. The aim of our study is to prospectively study the role of conventional risk factors (preoperative risk factors and clinical features) and of unconventional risk factors (genetic polymorphisms, inflammation and coagulation markers) with saphenous late patency and postoperative patients outcome, in particular with regard to adverse clinical events (myocardial infarction, successive stenting procedures, arrhythmias etc.)and to bypass patency.

Plasma venous samples will be collected the day before surgery, at discharge from the hospital, and at follow-up from patients undergoing on-pump and off-pump coronary artery bypass grafting and stored at -80°C; Patients will be followed-up periodically with visits and telephone interviews, and will be also invited to undergo multislice (64 rows) CT scan in order to assess graft patency between 12 and 24 months after surgery.

Finally the relation between conventional and unconventional risk factors with adverse events at follow-up will be assessed with multivariable statistical models.

Study Type

Observational

Enrollment (Anticipated)

300

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

  • Italy
      • Milan, Italy, 20138
        • Recruiting
        • Centro Cardiologico Monzino
        • Contact:
        • Principal Investigator:
          • Alessandro Parolari, MD, PhD

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 to 89 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Men and women age 18 to 89
  • Elective primary CABG
  • Female patients must be non-lactating and not pregnant
  • Able and willing to comply with study requirements by signing a consent form

Exclusion criteria

  • Concomitant surgery
  • Major end organ dysfunction
  • Serious intercurrent illness or infection
  • Known coagulation disorders
  • Emergencies

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

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
1
Pts undergoing CABG or OPCAB
Procedure: Coronary Artery Bypass Grafting
Coronary Artery Bypass Grafting on- or off-pump

Collaborators and Investigators

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

Sponsor

Centro Cardiologico Monzino

Investigators

  • Principal Investigator: Alessandro Parolari, MD, PhD, Centro Cardiologico Monzino - Milano

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

  • 1. American Heart Association. Heart disease and stroke statistics - 2005 update. Dallas, TX: AHA 2004 2. Lytle BW. Prolonging patency - choosing coronary bypass grafts. N Engl J Med 2004; 351: 2262-4 3. Motwani JG et al. Aortocoronary saphenous vein graft disease : pathogenesis, predisposition and prevention. Circulation 1998; 97:916-31 4. Yilmaz M et al. Metabolic syndrome negatively impacts early patency of saphenous vein grafts. Coronary artery disease 2006; 17:41-4 5. Moor E et al. Haemostatic function in patients undergoing coronary artery bypass grafting: perioperative perturbations and relations to saphenous vein graft closure. Thrombosis research 2000; 98:39-49 6. Podgoreanu M et al. New paradigms in cardiovascular medicine. JACC 2005; 46:1965-77 7. Stafford-Smith M et al. Association of genetic polymorphisms with risk of renal injury after coronary bypass graft surgery. Am J Kidney Dusease 2005; 45:519-30 8. Moor E et al. Coagulation factor V (Arg506à Gln) mutation and early saphenous graft occlusion after coronary artery bypass grafting. Thromb Haemost 1998; 80:220-4 9. Yende S et al. Clinical relevance of ACE gene polymorphisms topredict risk of mechanical ventilation after coronary artery bypass surgery. Crit Care Med 2004; 32: 922-27

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

January 1, 2007

Study Completion (Anticipated)

January 1, 2011

Study Registration Dates

First Submitted

September 16, 2008

First Submitted That Met QC Criteria

September 16, 2008

First Posted (Estimate)

September 18, 2008

Study Record Updates

Last Update Posted (Estimate)

September 18, 2008

Last Update Submitted That Met QC Criteria

September 16, 2008

Last Verified

September 1, 2008

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • BAPPY

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.

Subscribe