Document Detail

Intracoronary brachytherapy after stenting de novo lesions in diabetic patients: results of a randomized intravascular ultrasound study.
MedLine Citation:
PMID:  15358014     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: We studied the efficacy of intracoronary brachytherapy (ICB) after successful coronary stenting in diabetic patients with de novo lesions. BACKGROUND: Intracoronary brachytherapy has proven effective in preventing recurrences in patients with in-stent restenosis. However, the role of ICB for the treatment of de novo coronary stenoses remains controversial. METHODS: Ninety-two patients were randomized to either ICB or no radiation after stenting. Primary end points were in-stent mean neointimal area (primary end point of efficacy) and minimal luminal area of the entire vessel segment (primary end point of effectiveness), as assessed by intravascular ultrasound at six-month follow-up. Quantitative coronary angiography analysis was performed at the target, injured, irradiated, and entire vessel segments. RESULTS: At follow-up, the in-stent mean neointimal area was 52% smaller in the ICB group (p < 0.0001). However, there was no difference in the minimal luminal area of the vessel segment (4.5 +/- 2.4 mm2 vs. 4.4 +/- 2.1 mm2). Restenosis rates increased progressively by the analyzed segment in the ICB group: target (7.1% vs. 20.9%, p = 0.07), injured (9.5% vs. 20.9%, p = NS), irradiated (14.3% vs. 20.9%, p = NS), and vessel segment (23.8% vs. 25.6%, p = NS). At one year, 1 cardiac death, 6 myocardial infarctions (MIs) (3 due to late stent thrombosis), and 10 target vessel revascularizations (TVRs) (6 due to the edge effect) occurred in the ICB group, whereas in the nonradiation group, there were 11 TVRs and no deaths or MIs. CONCLUSIONS: Intracoronary brachytherapy significantly inhibited in-stent neointimal hyperplasia after stenting in diabetic patients. However, clinically this was counteracted by the occurrence of the edge effect and late stent thrombosis.
Manel Sabaté; Gela Pimentel; Carlos Prieto; José María Corral; Camino Bañuelos; Dominick J Angiolillo; Fernando Alfonso; Rosana Hernández-Antolín; Javier Escaned; Panayotis Fantidis; Cristina Fernández; Antonio Fernández-Ortiz; Raúl Moreno; Carlos Macaya
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Publication Detail:
Type:  Clinical Trial; Comment; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the American College of Cardiology     Volume:  44     ISSN:  0735-1097     ISO Abbreviation:  J. Am. Coll. Cardiol.     Publication Date:  2004 Aug 
Date Detail:
Created Date:  2004-09-13     Completed Date:  2004-09-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8301365     Medline TA:  J Am Coll Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  520-7     Citation Subset:  AIM; IM    
San Carlos University Hospital, Madrid, Spain.
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MeSH Terms
Coronary Restenosis / epidemiology
Coronary Stenosis / complications,  radiotherapy*,  ultrasonography*
Coronary Thrombosis / etiology
Death, Sudden, Cardiac / epidemiology
Diabetes Complications*
Hyperplasia / prevention & control
Middle Aged
Myocardial Infarction / epidemiology
Stents* / adverse effects
Treatment Outcome
Tunica Intima / pathology
Ultrasonography, Interventional*
Comment On:
J Am Coll Cardiol. 2004 Aug 4;44(3):528-37   [PMID:  15358015 ]
Comment In:
J Am Coll Cardiol. 2004 Aug 4;44(3):538-40   [PMID:  15358016 ]

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