Volume 15 - Issue 6 - June, 2003

Morphological and Functional Assessment of the Septal Course of a Left Coronary Artery Originating from the Right Sinus of Valsa

Thomas M. Schiele, MD, *Christof Weber, MD, Volker Klauss, MD

Key words: coronary anomaly, intracoronary pressure, intravascular ultrasound, multislice computed tomography

Origin of the left main coronary artery (LMCA) from the right aortic sinus is a rare coronary anomaly.1–11 When coursing interarterially, the risk of sudden death probably caused by myocardial ischemia due to compression of the LMCA between the great vessels during systole is significantly elevated.5,6,9,13–15 When coursing intraseptally, the clinical significance of this condition is not established. Exertional myocardial ischemia of clinical significance...

Cutting Balloon to Treat Carotid In-Stent Stenosis: Technical Note

Bernard R. Bendok, MD, *Gary S. Roubin, MD, **Barry T. Katzen, MD,
Alan S. Boulos, MD, Elad I. Levy, MD, *Thos Limpijankit, MD, Adnan I. Qureshi, MD, Lee R. Guterman, PhD, MD, L. Nelson Hopkins, MD

Key words: angioplasty, carotid stent, cutting balloon, in-stent stenosis

Carotid angioplasty with stenting for atherosclerotic stenosis is currently under examination in numerous trials as an alternative to carotid endarterectomy (CEA) and as an option for high-risk patients.1 In-stent stenosis is one of the possible long-term complications of vascular angioplasty and stenting. This condition is defined as >= 50% increase in the narrowing of the lumen within a stent, as compared with the diameter of the lumen immediately after treatment. The incidence of carotid in-stent stenosi...

Cutting Balloon Before Stent: Angiographic and IVUS Correlation

David G. Rizik, MD, Antoine M. Adem, MD, Neil C. Barman, MD

A 50-year-old male presented with de novo rest angina. The panel at the left demonstrates the angiographic and intravascular ultrasound (IVUS) appearance of the lesion pre-treatment. Following Cutting Balloon angioplasty with a 4.0 mm device, the center panel demonstrates the IVUS appearance showing remnants of the atherotome incisions, best seen at the 2 o’clock, 5 o’clock and 7 o’clock positions. The panel to the right demonstrates the final lesion appearance after implantation of a 5.0 NIR stent, requiring only 10 atmospheres to achieve full stent deployment. Lesion microsurgical inci...

Editor's Message - April 2003

Richard E. Shaw, PhD, FACC

Dear Readers,

This issue of the Journal of Invasive Cardiology includes original research articles, case reports with brief reviews, and articles from the Journal special sections “Acute Coronary Syndromes”, “Interventional Pediatric Cardiology” and “Clinical Images”.

The first research article, by Dr. Dardas and colleagues from the Thessaloniki Heart Institute, St. Luke’s Hospital in Thessaloniki, Greece describes their novel approach to treating patients presenting with what appears to be bifurcation lesions, but are actually a false bifurcation of lesions in a main branc...

A Technique for Type 4a Coronary Bifurcation Lesions: Initial Results and 6-Month Clinical Evaluation

Petros S. Dardas, MD, Dimitris D. Tsikaderis, MD, Nick E. Mezilis, MD, Giannis Styliadis, MD

Percutaneous coronary intervention (PCI) of bifurcation lesions remains technically challenging.1,2 Immediate and mid-term results using balloon angioplasty are not always satisfactory for various reasons, such as low angiographic success rate (in the range of 75–85%), high complication rate (8–22%) and high restenosis rate (40–65%).3–5 Furthermore, first-generation stents such as the Palmaz-Schatz and Cook stents were not proven satisfactory in this clinical setting, as the small sidebranches were sacrificed in some cases or dilated with difficulty in others....

A New Technique for Coronary Bifurcations: Good News!

Antonio Colombo, MD and Vassilis Spanos, MD

Bifurcated coronary artery lesions represent one of the challenging areas in interventional cardiology. Coronary stenting resulted in more predictable results and higher angiographic success rate compared to balloon angioplasty. Angiographic restenosis rates nevertheless remain high, irrespectively of the different approaches employed.1–6

A limited number of studies are available in the literature regarding treatment of pseudo-bifurcation lesions.7 Traditionally bifurcated lesions have been classified according to the presence of disease in the main branch (MB), in b...

Use of Platelet Glycoprotein IIb/IIIa Inhibitors and Spontaneous Pulmonary Hemorrhage

Arshad Ali, MBBS, MRCP, Mustafa Hashem, MD, Howard S. Rosman, MD, Ghassan Kazmouz, MD, Julius M. Gardin, MD, Theodore L. Schrieber, MD

Key words: percutaneous coronary intervention, platelet glycoprotein IIb/IIIa inhibitors, pulmonary hemorrhage

In 1983, the description of an antibody that blocked the platelet glycoprotein (GP) IIb/IIIa receptor led to the development of a chimeric monoclonal antibody called abciximab for treatment of patients undergoing high-risk percutaneous coronary intervention (PCI).1,2 The EPIC trial clearly demonstrated the clinical benefits of abciximab in these patients.3 Since then, multiple peptide and nonpeptide antagonists of the IIb/IIIa receptor have been developed....

Pulmonary Hemorrhage During Glycoprotein IIb/IIIa Inhibitor Therapy: An Uncommon but Life-Threatening (and Under-Recognized) Com

George Dangas, MD, PhD and Ioannis Iakovou, MD

The study presented by Ali et al. in this issue of the Journal reports an institutional experience with pulmonary hemorrhage in patients treated with platelet glycoprotein (GP) IIb/IIIa inhibitors. Use of these intravenous agents has been shown to lower the peri-procedural myonecrosis in patients who undergo coronary angioplasty and stent placement.1–4 However, there are increased bleeding complications, most frequently at the vascular access site.3–5 These complications are certainly in excess to those observed with heparin or bivalirudin when given alone, and appear...

Arterial Wall Temperature Following Coronary Stent Implantation in Pigs: The Role of Post-Stent Inflammation

Leonidas Diamantopoulos, MD, PhD, Yanming Huang, MD, Xiaosun Liu, MD, Shenggiao Li, MD, Walter Desmet, MD, PhD, Frans Van de Werf, MD, PhD, Ivan De Scheerder, MD, PhD

Arterial endoprostheses (stents) are widely used to improve angioplasty outcome and successfully restore the reduced vascular lumen. However, the metallic nature of stents causes some degree of arterial wall inflammation. This inflammation is known from ex vivo studies,1,2 and has been cited as a possible contributory cause in restenosis following stent implantation3–5 as well as for increased local thrombogenicity.6–8 Yet, it has not been studied in vivo. Such an in vivo study of post-stent inflammation would yield important information regarding the estab...

Superficial Femoral Artery Occlusion: Nitinol Stents Achieve Flow and Reduce the Need for Medications Better than Balloon Angiop

Leslie Cho, MD, *Marco Roffi, MD, †Debabrata Mukherjee, MD, §Deepak L. Bhatt, MD, §Christopher Bajzer, MD, §Jay S. Yadav, MD

Key words:balloon angioplasty, SFA, stents

Stents have proven superior to balloon angioplasty in the treatment of coronary atherosclerosis in terms of reduction of acute complications and restenosis.1,2 However, in the treatment of superficial femoral artery (SFA) stenosis, multiple studies have shown equivalent patency between balloon angioplasty and stenting.3,4 Most of these studies used stainless steel stents, with minimal radial force and flexibility. To date, there has been no study assessing the efficacy of next generation stents compared to balloon angioplasty ...

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