Bare-metal stents are better for some heart patientsMay 14, 2007(PHILADELPHIA) -- While drug-eluting stents are effective in keeping open diseased heart arteries, they should not be used for patients who need to have non-cardiac surgery a short time after an interventional heart procedure. A presentation at the Society for Cardiovascular Angiography and Interventions in Orlando by cardiologists at Jefferson Medical College indicates that for these patients, bare metal stents provide a safer choice. "The issue here," says Michael Savage, M.D., Catheterization Laboratory Director at Thomas Jefferson University Hospital in Philadelphia, "is that studies have demonstrated that those patients who receive drug-eluting stents may develop life-threatening cardiac complications if they undergo subsequent, non-cardiac surgery." This prescription for the potentially deadly problem begins when a person, often a senior citizen, learns that she or he must have elective surgery. The surgery can be for a minor to a major problem--from vacular surgery to fix blood flow problems, to broken hips or bones, neurological or urological issues and more. Often, severe coronary artery disease is discovered during the pre-surgical testing. If severe, it presents a more-immediate problem and therefore, must be treated before the patient undergoes the elective surgery. Prior studies have shown that patients may suffer fatal heart attacks due to clotting inside of the stents when surgery is performed within a few weeks after stent placement. In the case of drug-eluting stents, clotting of the stent may occur even months or years after their heart procedure, particularly when their blood thinning medicine (usually aspirin and Plavix) are stopped before the surgery. To avoid the potentially deadly scenario, the Jefferson Medical College researchers developed a clinical protocol to enable patients to have both procedures successfully with little risk. Led by Agostino Ingraldi, M.D., a fellow in cardiovascular diseases, they developed the following four-part strategy: * Avoidance of drug-eluting stents in favor of bare metal stents during the interventional heart procedure. * A four-week course of the blood thinner clopidogrel (Plavix) after an interventional heart procedure. * Deferral of the second, non-cardiac surgery for five to 12 weeks after the interventional procedure. * Discontinuation of clopidogrel (Plavix) at least five days prior to the non-cardiac surgery. The researchers studied a total of 60 patients (33 men and 27 women) who averaged 68 years old and who were treated with the strategy. Twenty seven percent suffered from diabetes which can complicate surgery. The results show the coronary interventional procedure was successful in all patients where a total of 82 heart lesions were treated with bare-metal stents. The second, non-cardiac, surgery was performed an average of 47 days later. All were performed under general anesthesia and were successful. There were no deaths or clotting leading to problems. Also, clotting of the stents--a major problem seen with drug-eluting stents in this setting--were not seen in any patient. "This research provides a safe treatment strategy for interventional cardiologists and their patients who will be undergoing further surgery," adds Dr. Savage, who is also associate professor of Medicine, Jefferson Medical College of Thomas Jefferson University. "Drug-eluting stents have proven benefits but may not be the best solution for every patient." Thomas Jefferson University |
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| Related Stents Current Events and Stents News Articles Your Own Stem Cells Can Treat Heart Disease The largest national stem cell study for heart disease showed the first evidence that transplanting a potent form of adult stem cells into the heart muscle of subjects with severe angina results in less pain and an improved ability to walk. The transplant subjects also experienced fewer deaths than those who didn't receive stem cells. Vitamin B niacin offers no extra benefit to statin therapy in seniors already diagnosed with CAD The routine prescription of extended-release niacin, a B vitamin (1,500 milligrams daily), in combination with traditional cholesterol-lowering therapy offers no extra benefit in correcting arterial narrowing and diminishing plaque buildup in seniors who already have coronary artery disease, a new vascular imaging study from Johns Hopkins experts shows. Higher carotid arterial stenting rates associated with poorer clinical outcomes Among eligible Medicare beneficiaries, increased use of carotid arterial stenting (CAS) procedures to treat carotid stenosis-the narrowing of the carotid artery-is associated with higher rates of mortality and adverse clinical outcomes, including heart attack and stroke, according to researchers from the University of Pennsylvania School of Medicine. Drug-eluting stents better than bare-metal stents for heart attack patients Late-breaking data from the landmark HORIZONS-AMI clinical trial, presented at the 21st annual Transcatheter Cardiovascular Therapeutics (TCT) scientific symposium, demonstrated that after two years, in heart attack patients, the use of a drug-eluting stent (paclitaxel) was safer and more effective than a bare-metal stent; and that the administration of the anticoagulant medication bivalirudin enhanced safety and efficacy compared to the use of heparin + GPIIb/IIIa inhibitors. SPIRIT IV trial shows everolimus stent sets new standard for event-free survival Late-breaking data from SPIRIT IV, a large-scale multi-center study of nearly 4,000 patients in the U.S., shows that an everolimus-eluting stent demonstrated enhanced safety and efficacy in the treatment of de novo native coronary artery lesions when compared to a paclitaxel-eluting stent, and showed that "low late loss" may be achieved with drug-eluting stents without sacrificing safety. Drug-eluting stents safe, effective for treatment of chronic total occlusions A multicenter study in Asia found drug-eluting stents effective with a low rate of acute complications in patients with chronic total occlusions (CTOs) undergoing PCI. Results of the study will be presented at the 21st annual Transcatheter Cardiovascular Therapeutics (TCT) scientific symposium, sponsored by the Cardiovascular Research Foundation (CRF). Researchers find drug-eluting stents safe, effective for PCI in diabetics Results of a multicenter study in Asia, demonstrating that drug-eluting stents are effective with a low rate of complications in diabetic patients, will be presented at the 21st annual Transcatheter Cardiovascular Therapeutics (TCT) scientific symposium, sponsored by the Cardiovascular Research Foundation (CRF). New type of sirolimus-eluting stent demonstrates superior results A new type of sirolimus-eluting stent (SES) successfully showed significantly greater neointimal suppression than the paclitaxel-eluting stent (PES) with greater vessel wall integrity surrounding the stent, confirming the finding of superiority of the SES over the PES stent for the trial's primary endpoint of in-stent late loss. Laser processes promise better artificial joints, arterial stents Researchers are developing technologies that use lasers to create arterial stents and longer-lasting medical implants that could be manufactured 10 times faster and also less expensively than is now possible. Stent for life initiative Primary angioplasty (with stent implantation) is the most effective therapy for acute myocardial infarction (AMI), but it is not available to many patients, even though most European countries have sufficient resources (ie, catheterisation laboratories) for its wider use. More Stents Current Events and Stents News Articles |
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