Immediate and one-year outcome of intracoronary stent implantation in small coronary arteries with 2.5-mm stents

• Published in: The American heart journal 2000-12, Vol.140 (6), p.898-905
• Main Authors: Al Suwaidi, Jassim, Garratt, Kirk N., Berger, Peter B., Rihal, Charanjit S., Bell, Malcolm R., Grill, Diane E., Holmes, David R.
• Format: Article
• Language: English
• Subjects: Aged; Angioplasty, Balloon, Coronary - instrumentation; Biological and medical sciences; Coronary Angiography; Coronary Disease - diagnostic imaging; Coronary Disease - mortality; Coronary Disease - therapy; Diseases of the cardiovascular system; Female; Follow-Up Studies; Humans; Male; Medical sciences; Minnesota - epidemiology; Prognosis; Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects); Retrospective Studies; Severity of Illness Index; Stents; Survival Rate
• ISSN: 0002-8703; 1097-6744
• DOI: 10.1067/mhj.2000.110936

Background The role of coronary stenting in the treatment of stenoses in small coronary arteries with use of 2.5-mm stents is not well defined. Methods and Results Between January 1995 and August 1999, 651 patients with stenoses in small coronary arteries were treated with 2.5-mm stents (n = 108) or 2.5-mm conventional balloon angioplasty (BA) (n = 543). Patients who received treatment with both 2.5-mm and ≥3.0-mm stent placement or balloons were excluded. Procedural success and complication rates as well as 1-year follow-up outcomes were examined. Baseline clinical characteristics were similar between the two groups, except patients in the stent group were more likely to have hypertension and a family history of coronary artery disease and less likely to have prior myocardial infarction. Angiographic success rates were higher in the stent group (97.2% vs 90.2%, P =.02). In-hospital complication rates were comparable between the two groups. Among successfully treated patients, 1-year follow-up revealed no significant differences in the survival (96.2% vs 95.2%, P =.89) or the frequency of Q-wave myocardial infarction (0% vs 0.4%, P =.60) or coronary artery bypass grafting (8.4% vs 6.8%, P =.89) between the stent and BA groups, respectively. However, patients in the stent group were more likely to have adverse cardiac events (35.4% vs 22.1%, P =.05). Stent use after excluding GR II stent use, however, was not independently associated with reduced cardiac events at follow-up (relative risk 1.3 [95% confidence interval 0.8-2.3], P =.30). Conclusions Intracoronary stent implantation of stenoses in small coronary arteries with 2.5-mm stents can be carried out with high success and acceptable complication rates. However, compared with BA alone, stent use was not associated with improved outcome through 1 year of follow-up. (Am Heart J 2000;140:898-905.)