Coronary Artery Bypass Grafting: Factors Related to Late Events &

Status Recruiting

Clinical Trial Summary

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.

Clinical Trial 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 Design

Observational Model: Case-Only, Time Perspective: Prospective

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00755248
Study type	Observational
Source	Centro Cardiologico Monzino
Contact	Alessandro Parolari, MD, PhD
Phone	00390258002558
Email	alessandro.parolari@ccfm.it
Status	Recruiting
Phase	N/A
Start date	January 2007
Completion date	January 2011

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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.

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

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms