Volume 20 - Issue 4 - April, 2008
Frugal Coronary Angioplasty, Still an Option after 30 Years
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J INVASIVE CARDIOL 2008;20:E97-E101
Coronary angioplasty was not the first interventional procedure in cardiology (Table 1), but it clearly launched the discipline called interventional cardiology as we know it today.
Percutaneous coronary intervention (PCI), as it is customarily called today, had a slow start. Three years into its existence, the world experience still totaled less than 1,000 interventions (Table 2). Andreas Grüntzig showed impressively and unmistakably
Percutaneous Coronary Intervention in Neurosurgical Patients
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J INVASIVE CARDIOL 2008;20:E133-E135
The management of coronary disease in patients with spinal or intracranial disease may be challenging. In some cases, coronary lesions may require treatment before neurosurgery, while in others, myocardial ischemia or infarction may occur in the postoperative patient or simultaneously with stroke or intracranial hemorrhage. Patients with subarachnoid and intracranial hemorrhage have a high incidence of cardiovascular complications,1 and antiplatelet an
Protection Devices and Thrombectomy for Native Coronary Artery ST-Elevation Myocardial Infarction
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Primary percutaneous coronary intervention (PCI) is established as optimal therapy for patients with ST-elevation myocardial infarction (STEMI).1 The goal of primary PCI is to achieve a thrombolysis in myocardial infarction (TIMI) 3 flow and also to restore adequate perfusion at the myocardial level. However, visible thrombus embolization to the distal circulation during primary PCI occurs in up to 14% of patients, and outcomes in these patients are compromised.2 Furthermore, even in patients without such macroembolization, myocardial reperfusion is often suboptimal, w
Collateral Circulation via a Rare, Anomalously Arising Right Ventricular Branch
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J INVASIVE CARDIOL 2008;20:E136-E137
Coronary collateral vessels are able to supply blood to a myocardial territory vascularized by severely stenosed or occluded epicardial arteries. They may contribute significantly to the limitation of ischemia and infarct size.1,2 Improvement in left ventricular function3,4 and prevention of left ventricular aneurysm formation5 also has been attributed to the presence of collateral vessels.
Variations in coronary anato
B-Type Natriuretic Peptide and Serum Unbound Free Fatty Acid Levels after Contemporary Percutaneous Coronary Intervention
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B-type natriuretic peptide (BNP) and serum unbound free fatty acid (FFAu) are novel cardiac markers. BNP is a polypeptide secreted by the cardiac ventricles in response to volume and pressure overload. Measurement of BNP levels has demonstrated diagnostic value in heart failure and has evolved to be a powerful prognostic marker in acute coronary syndromes, stable coronary heart disease, diabetes and heart failure.1–3 FFAu is a sensitive marker of myocardial ischemia.4 A previous study conducted prior to the era of routine coronary stenting demonstrated a rise in
Successful Recanalization of In-Stent Coronary Chronic Total Occlusion by Subintimal Tracking
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J INVASIVE CARDIOL 2008;20:E129-E132
Percutaneous treatment of coronary chronic total occlusions (CTO) remains one of the major challenges in interventional cardiology. Although CTO in the form of in-stent restenosis (ISR-CTO) is relatively rare, with an incidence of 1.6% of stent procedures, it is associated with significant morbidity.1 The paucity of published data on this rare population indicates that the low success rate of PCI is mostly due to difficulty in passing the guidewi
Stent Thrombosis – A Complication Best Avoided
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Stent thrombosis (ST), while infrequent, is a serious complication of percutaneous coronary intervention (PCI) resulting in myocardial infarction (MI) or death.1–4 While drug- eluting stents (DES) have reduced the rate of restenosis and target lesion revascularization by 50–70% as compared to baremetal stents (BMS), there have been some concerns regarding ST.5,6,9–12 Systematic reviews of randomized trials revealed no overall differences relative to death with DES during longterm follow up to 5 years, but did show an increase in very late ST with DES.
Angioplasty, Stenting and Thrombectomy to Correct Left Main Coronary Stem Obstruction by a Bioprosthetic Aortic Valve
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J INVASIVE CARDIOL 2008;20:E124-E125
An infrequent, but potentially lethal, complication after aortic valve replacement (AVR) is the occurrence of iatrogenic coronary ostial stenosis. This complication has been observed after both mechanical and bioprosthetic valve use and its reported incidence varied between 0.3% and 5%.1,2 The most likely pathophysiological mechanism proposed is posttraumatic fibrous intimal proliferation caused by coronary ostia cannulation for direct cardioplegia dur
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