Volume 15 - Issue 11 - November, 2003
Editor's Message (Sept 2003)
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Dear Readers,
This issue of the Journal of Invasive Cardiology, which coincides with the annual Transcatheter Therapeutics meeting, includes original research articles, case reports, reviews, articles from the Journal special sections “Clinical Decision Making”, “The Electrophysiology Corner” and “Clinical Images”, and a Continuing Medical Education offering.
The first research study, submitted by Dr. George Stoupakis and colleagues from the UMDNJ-New Jersey Medical School in Newark, New Jersey, presents their evaluation of preservation of myocardial microcirculation measur
Short- and Intermediate-Term Follow-up Results of Percutaneous Transluminal Balloon Valvuloplasty in Adolescents and Young Adu
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PVS, usually due to dome-shaped valve apparatus, resulting from commissural fusion, comprises approximately 10% of all congenital heart diseases1–3 including 10–15% dysplastic valves,4–6 which are due to markedly thickened immobile cusps with variably reduced mobility. In moderate-to-severe valvular pulmonary stenosis (PS), subvalvular hypertrophy can cause infundibular narrowing and obstructive hemodynamics, which regresses after correction of valvular stenosis.7–9 Similarly, cyanosis can occur with right-to-left atrial shunting through a patent foramen ovale due to severe PS and decr
Multiple Ulcerations in Plaque Behind Stent Struts Resulting in Late Stent Malapposition After Gamma Brachytherapy for In-Stent
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Intracoronary stents reduce restenosis compared with conventional balloon angioplasty.1,2 However, in-stent restenosis remains an important clinical problem.3,4 Recently, randomized trials have demonstrated that intracoronary vascular brachytherapy (VBT) reduces recurrence after the treatment of in-stent restenosis.5–7 On the other hand, undesired effects of VBT such as late thrombosis and edge effect are also reported.6–8 Late stent malapposition is one of undesired effects of VBT. This case report describes multiple late stent malappositions after gamma VBT.
Case Report. A
Microcirculatory Effects of Abciximab and Eptifibatide: A Critical Appraisal
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The coronary microcirculation is critically important in the maintenance of myocardial nutritive blood flow. Even in situations where measures of epicardial blood flow appear normal, abnormalities in microcirculatory integrity secondary to microvascular occlusion may precipitate myocardial infarction and regional myocardial dysfunction. Atherothrombotic embolization of the distal microcirculation may occur spontaneously following plaque rupture during acute coronary syndromes or may occur secondary to percutaneous coronary intervention (PCI) induced plaque disruption. The debris produced by co
Pharmacoinvasive Management of Acute Coronary Syndrome in the Setting of Percutaneous Coronary Intervention: Evidence-Based, Sit
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Part II of III - Continued
TABLE 3 KEY (continued)
2) Unfractionated heparin(UFH) can be used as an alternative to enoxaparin. If UFH is used in the setting of PCI, activated clotting time (ACT) should be followed to achieve an appropriate level of anticoagulation. Use weight-based dosing according to guidelines. Weight-adjusted heparin dosing can be utilized during PCI. In those not treated with a GP IIb/IIIa inhibitor, 100 IU/kg IV should initially be administered; the target ACT is 300–350 seconds when measured by the Hemochron device. In those who are treated wit
Preservation of Myocardial Microcirculation During Mechanical Reperfusion for Myocardial Ischemia with Either Abciximab or Eptif
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Although rapid restoration of coronary flow in an infarct related artery is associated with improved survival, it is becoming increasingly evident that myocardial perfusion, and not just epicardial flow, is vital to myocardial salvage and viability. For example, patients with TIMI 2 flow are found to have a higher mortality than those with TIMI 3 flow, possibly as a result of impaired microcirculation.1 Myocardial blush grade (MBG) is an angiographic method of assessing myocardial microcirculation and provides independent risk stratification among patients with normal epicardial TIMI 3 flow.
Pharmacoinvasive Management of Acute Coronary Syndrome in the Setting of Percutaneous Coronary Intervention: Evidence-Based, Sit
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A total of 5,225 patients were enrolled in the PARAGON B trial. Among these patients, the type of heparin used was known in 5,200 (99.5%). The median duration of therapy was 72.8 hours for UFH and 79.7 hours for LMWH. LMWH was used in about one-fifth of the study cohort. Of the 389 sites that participated, approximately 61% of the sites used UFH only, 10% used LMWH only, and 28% used either UFH or LMWH (at the discretion of the attending physician). Enoxaparin was used in 91% of the patients treated with LMWH.36 In the PARAGON B trial, use of the LMWH enoxaparin in conjunction with a GP IIb/II
Complete Revascularization of Total Obstruction of Both Subclavian Arteries and Descending Abdominal Aorta by Combined Surgery
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The vast majority of symptomatic lesions of the aortic arch involve the subclavian artery.1 Since Bachman and Kim first reported a case of successful subclavian artery angioplasty in 1980,2 percutaneous transluminal angioplasty (PTA) has become a well established treatment modality for patients with atherosclerotic stenosis of subclavian artery.3 Chronic infrarenal aortic occlusion has a broad spectrum of ischemic manifestations, and aortofemoral bypass graft surgery has been considered as a gold standard in the treatment of aortoiliac artery occlusive disease. Total occlusion of both subclavi
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