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The name widow maker may also apply to the left coronary artery or severe occlusions to that artery. This term is used because the left main coronary and/or the left anterior descending supply blood to large areas of the heart. Stenoses of the right coronary artery—especially those located near the ostium—have an increased predilection for acute closure. Several characteristics of the stenosis appear to increase the incidence of abrupt closure. percutaneous coronary intervention (PCI) was planned in 48-72 hours.
A CTO was defined as a complete occlusion of a major epicardial coronary artery existing for at least six weeks (mean, 7 +/- 5 months). Myocardial wall thickening and left ventricular volumes were quantified on cine-images, and the transmural extent of infarction (TEI) was scored on delayed-enhancement images. 2006-02-21 · The CTO was defined as a complete occlusion of a major coronary artery existing for at least six weeks as obtained from either the date from the previous angiogram or the clinical history of prolonged anginal chest pain or myocardial infarction. Chronic total occlusions (CTO) are encountered in almost one-fourth of patients undergoing coronary angiography. The presence of an untreated CTO has been related to adverse clinical prognosis, both in stable angina and acute myocardial infarction, and is often associated with persistent symptomatic angina. 2021-04-06 · Subsequent coronary angiography revealed a chronic total occlusion (CTO) of the right coronary artery with brisk collateral flow from the left anterior descending artery (Figure 1). There was minimal obstructive disease in the remainder of the coronary tree.
The predilection of platelet hyperreactivity for female gender has been noted in other studies in both humans [38-40] and mice . The lack of association between platelet hyperreactivity and oral contraceptive use, menopausal status, or phase of the menstrual cycle at the time of testing among female subjects suggests an underlying genetic basis With his acute presentation suggestive of acute coronary syndrome, stent thrombosis was a major concern. As a result, he underwent a second coronary angiography, which demonstrated a patent stent without significant thrombosis.
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Abstract. From 1988 to 1991, 200 consecutive patients (18 female, 182 male, mean age 55.4 ± 9 years) with chronic coronary occlusions resistant to recanalizatio Coronary chronic total occlusions (CTO), in spite of excellent progress in the field of medicine, remain a great challenge for interventional cardiologists.
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2–5 In a Canadian prospective registry of 14,439 patients undergoing coronary angiography a CTO was present in 18.4 % of all patients with significant coronary … Soon KH, Cox N, Wong A et al. CT coronary angiography predicts the outcome of percutaneous coronary intervention of chronic total occlusion. J. Interv. Cardiol.
pmid:19294443.  Serruys P, Morice M, Kappetein A. Percutaneous coronary intervention versus coronary-artery bypass grafting for severe coronary artery disease. N Engl J Med. 2009;360:961-972.  Sianos G, Barlis P, Di Mario C, et al. European experience with the retrograde approach for the recanalisation of coronary artery chronic total occlusions.
They are often found during coronary angiography, with a prevalence rate of 18%-52% [3-5]. Although chronic occlusions may be present in up to 35% of patients undergoing coronary angiography,7 CTO PCI accounts for only around 5% of all elective PCI procedures.8 Many patients with single 2014-03-15 · Coronary artery occlusions are common in coronary disease, with up to a quarter to a third of patients referred for coronary angiography reported to have coronary occlusions[1, 2].
Bilateral involvement may occur in up to 22% of cases. The particular predilection for the proximal portion of the coronary arteries maybe due to the blood supply, which is via nutrient arteries of narrow calibre in the young. If these vessels are affected bysevere arteritis diminished blood supply to the walls ofthe proximal coronary arteries could result.10 Thismaybewhyinfants are at greater risk
These occlusions tended to cluster within the proximal third of segments between 10 and 40 mm (48%, 43 of 90) and in the each coronary artery. The current study agrees with Wang et segments beyond 70 mm from the RCA ostium (32%, 29 of al.
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 Sianos G, Barlis P, Di Mario C, et al. European experience with the retrograde approach for the recanalisation of coronary artery chronic total occlusions. Evaluation of left ventricular function three years after percutaneous recanalization of chronic total coronary occlusions. Am J Cardiol. 2008;101:179-85. 9.- Hoye A, VanDomburg RT, Sonnenschein K and Serruys PW. Percutaneous coronary intervention for chronic total occlusions: the Thoraxcenter experience 1992-2002.