June 2008

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Volume 20 Issue 6
Renal artery stenosis is mainly a disease of progressive atherosclerosis involving the ostium and proximal third of the main renal artery and the peri-renal aorta. Atherosclerosis accounts for 90% of cases of renal artery stenosis (RAS).1 The prevale…
Nitinol, an alloy composed of 55% nickel and 45% titanium, has been widely used in medical products. With its superelastic and shape-memory properties, nitinol has generated new models of occlusion devices for transcatheter closure of atrial septal d…
Since the description by King,1–3 Rashkind4–6 and their associates of devices to occlude atrial septal defects (ASDs), a number of ASD occluding devices have been designed, investigated and were reviewed elsewhere.7–12 The devices were initially test…
Stroke is the leading cause of long-term disability and the third leading cause of death after cardiac- and cancer-related deaths. In 2004, the prevalence of stroke was estimated to be 5.7 million (2.4 million males, 3.3 million females). Every year,…
Chronic total occlusion (CTO) represents 10–20% of all angioplasty cases and remains a challenge for interventional cardiologists.1–3 CTOs are associated with significant angina, impaired left ventricular function and poor long-term outcomes.4 Althou…
Coronary artery disease (CAD) is inexorably linked to abnormal cholesterol levels, particularly low-density lipoprotein- C (LDL-C).1–4 Longstanding hyperlipidemia leads to deposition of oxidized LDL-C in activated macrophages and results, ultimately,…
The benefits of adjunctive mechanical devices to prevent distal embolization in patients undergoing mechanical revascularization for acute myocardial infarction (AMI) are still a matter of debate.Case Report. A 34-year-old male smoker with dyslipidem…
Although the efficacy of coronary artery bypass graft surgery (CABG) has been enhanced by the widespread use of arterial grafts, the limited number of arterial anastomoses mandates continued heavy reliance on venous conduits. Saphenous vein graft (SV…
Aortic regurgitation (AR) is characterized by inadequate aortic valve closure that results in the reflux of blood from the aorta into the left ventricle (LV) during diastole. Assessment of the degree of regurgitation is paramount to clinical decision…
Case Report. A 63-year-old female with a history of longstanding diabetes mellitus, hypertension, hyperlipidemia and stable angina presented with recent worsening of exertional angina with rest anginal episodes. She underwent coronary angiography 3 y…