Coronary Artery Disease Clinical Trial
Official title:
CorMatrix ECM Study: To Identify Inflammatory Markers Following CABG With/Without CorMatrix's Extra Cellular Matrix (ECM)
The objective of this study is to identify proteomic inflammatory biomarkers to determine if there are differences in the biomarkers in patients who are treated using the CorMatrix ECM implant to close the pericardium and the patients whose pericardium is left open (the current standard of care).
The pericardium's main function is to secrete proteins that ensure proper functioning within the pericardial space and to maintain pericardial pressure. Once dissected the pericardium is usually left open at the end of surgery due to the difficulty in realigning the edges and to avoid adverse effects cause by an inflammatory response. The body's inflammatory response is one of protection and healing of an injury. However many of the inflammatory biomarkers released can cause adverse outcomes after cardiac surgery, including: renal failure, myocardial infarction, atrial fibrillation, stroke and death. CorMatrix extra cellular matrix (ECM) Technology is a Food and Drug Administration (FDA) approved unique extra cellular implant material used for pericardial closure and reconstruction. Pericardial reconstruction using porcine intestinal ECM is a novel application. ECM combines the innate attributes of nature with the precision of science to help the heart heal itself. It is an acellular biomaterial that does not encapsulate when surgically implanted, but is gradually remodeled, leaving behind organized and healthy tissue. The body's tissue begins remodeling at the surgical site while the ECM maintains the needed tissue support. When implanted, the ECM acts as a scaffold into which the patient's cells migrate and integrate, stimulating the patient's natural wound-healing mechanisms. As the patient's cells become active, they lay down their own collagen, which matures over time to form strong and permanent tissue repair without leaving behind permanent foreign material. Because the ECM contains primarily collagen, the device is gradually replaced as the patient's tissue gradually turns over in a natural state of self-renewal. A retrospective study compared the incidence of post operative atrial fibrillation (POAF) in patients treated with the CorMatrix ECM for pericardial closure following isolated coronary artery bypass graft (CABG) versus patients not treated with the patch. The retrospective study comprised of 222 patients. 111 were treated with the CorMatrix ECM and the other 111 were not. Results showed POAF in 34 of 111 control patients but only 20 in 111 CorMatrix ECM treated patients, indicating a 54% decrease in the risk of POAF in the CorMatrix ECM treated patients. This study shows a statistically significant reduction in the risk of POAF in patients undergoing an isolated CABG with pericardial closure using the CorMatrix ECM. This is an unblinded, randomized study to identify proteomic inflammatory biomarkers to determine if there are differences in the biomarkers in patients who are treated using the CorMatrix ECM implant to close the pericardium and the patients whose pericardium is left open (the current standard of care). The study will be located at the Inova Heart and Vascular Institute (IHVI). The CorMatrix ECM will be implanted during the CABG surgical procedure in the IHVI cardiovascular operating rooms (CVOR). Sixty (60) patients who are routinely scheduled for a CABG will be recruited and randomly assigned to one of the two groups. There will be thirty (30) patients in each group. The control "No Intervention" group will not receive the CorMatrix ECM during surgery, leaving the pericardium open according to current standard of care. The treatment "Cormatrix" group will receive the CorMatrix ECM during surgery for the closure of the pericardium according to the specific recommended surgical technique. Pericardial fluid and blood samples will be collected from all patients. Pericardial fluid and blood samples will undergo novel nanoparticle based biomarker discovery technology to harvest proteomic biomarkers at the George mason University. In addition, patients will have their cardiac rhythm continually assessed during their hospital stay and then at their follow up appointments with their surgeon and cardiologist to determine whether they developed POAF post discharge. Both genders, greater than eighteen (18) years of age, will be included in the research. There are no enrollment restrictions based upon race or ethnic origin and it is expected their inclusion will be representative of the population undergoing CABG at IHVI. Pregnant women are excluded from the study. ;
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