Document Detail

Coronary stenting without predilatation in a broad spectrum of clinical and angiographic situations.
MedLine Citation:
PMID:  10731268     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Direct coronary stenting without balloon predilatation has the potential benefits of a reduced risk of extended dissections, reduced fluoroscopy exposure, reduced procedural time, and potential cost savings. With the availability of superior stents and delivery systems, we review our experience with direct stent deployments in a large selected patient cohort. METHODS: We prospectively studied 158 consecutive cases of attempted coronary stenting without balloon predilatation over a 1-year period. RESULTS: Indications for the procedure included unstable angina (71%), stable angina (24%) and acute myocardial infarction (5%). Target vessels were the anterior descending artery (56%), right coronary artery (30%), circumflex artery (8%), and vein grafts (6%). Pre-procedural TIMI flows were grade 3 (91.7%), grade 2 (5.8%), grade 1 (1.3%) and 0 (1.3%). Lesion types were graded A (27%), B (61%), and C (12%). Stent types included NIR Primo (80.4%), ACS Multi-Link RX Duet (10.1%), NIR (5.1%), and others (4.4%). Stents ranged from 3.0Eth 4.0 mm in diameter (median = 3 mm) and 8Eth 32 mm in length (median = 16 mm). Stents were successfully deployed in 155 cases (98.1%); 2 (1.3%) required predilatation and 1 (0.6%) deployed stent could not be expanded and was opened by rotablation. All except the rotablator case achieved final TIMI grade 3 flow, and 66% did not require further balloon dilatation. There were no deaths or cases of urgent bypass surgery. Case duration and radiation exposure in direct stenting (32.8 +/- 18.9 minutes and 6.7 +/- 6.2 minutes, respectively) compared favorably to those in a matched group of patients in conventional stenting (47 +/- 18 minutes and 11 +/- 7 minutes) and coronary angioplasty (40 +/- 12 minutes and 10 +/- 6 minutes) for single-lesion cases (p < 0.005). Creatine kinase elevation related to the procedure was observed in 5 patients. Subacute stent thrombosis occurred in 2 (1.3%) cases. CONCLUSION: Direct coronary stenting was successfully and safely accomplished in a variety of clinical situations in selected patients.
A W Chan; R G Carere; N Solankhi; A Dodek; J G Webb
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Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  The Journal of invasive cardiology     Volume:  12     ISSN:  1042-3931     ISO Abbreviation:  J Invasive Cardiol     Publication Date:  2000 Feb 
Date Detail:
Created Date:  2000-06-06     Completed Date:  2000-06-06     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8917477     Medline TA:  J Invasive Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  75-9     Citation Subset:  IM    
502-1160 Burrard Street, Vancouver, British Columbia, V6Z 2E8, Canada.
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MeSH Terms
Angina Pectoris / therapy
Angina, Unstable / therapy
Balloon Dilatation
Coronary Vessels*
Middle Aged
Myocardial Infarction / therapy
Prospective Studies

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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