Heart 1998;80:505-508 ( November )
Impact of stenting on coronary angioplasty procedures
Department of Cardiology, Wythenshawe
Hospital, Southmoor Road, Wythenshawe M23 9LT, Manchester, UK
Correspondence to: Dr Lee.
Accepted for publication 26 November 1997
Objective
To compare patient selection and outcome
of coronary angioplasty procedures before and after the widespread
availability and use of stents.
Subjects and methods
Group 1 consisted of
252 consecutive patients and group 2 comprised 389 patients who
underwent angioplasty between April 1993 and March 1994, and April 1995 and March 1996, respectively, in a tertiary cardiothoracic centre.
Clinical variables were collected before the procedures. Endpoints
included in-hospital death, the need for repeat coronary angiography,
repeat angioplasty, and coronary artery bypass surgery.
Lesions were classified under American Heart Association/American
College of Cardiology criteria in 100 randomly selected patients
from each group.
Results
311 and 482 angioplasty procedures were
performed in patients from groups 1 and 2, respectively. One or more
stents were deployed in nine (4%) and 179 (46%, p < 0.01)
patients, respectively. The success rate was higher in group 2 than in
group 1 patients (483/523 (92%) v 274/372 (88%),
respectively, p < 0.05). There were significantly more single vessel
angioplasty procedures (198/252 (79%) v 272/389 (70%), p < 0.05), type A lesions (30/116 (26%) v
19/130 (15%), p < 0.05), patients with stable angina (220/252
(87%) v 311/389 (80%), p < 0.05), and fewer acute
myocardial infarction patients (1/252 (0%) v 12/389
(3%), p < 0.05) treated in group 1 than in group 2, respectively.
Similar numbers of angioplasty were performed in the left anterior
descending, left circumflex, and right coronary arteries. There were no
significant differences in the in-hospital mortality or the need for
repeat coronary angiography, angioplasty, or bypass surgery at 24 hours
or six months after the initial procedure.
Conclusion
Patients undergoing angioplasty in
the stenting era had features associated with an increased risk of
complication. Despite this, the primary success rate was higher, and
the complication rate and the need for subsequent revascularisation
were similar in the two groups, supporting the widely held clinical
impression that stenting has made a valuable impact on the practice of angioplasty.
© 1998 by Heart
This article has been cited by other articles:
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[Abstract] [Full Text]
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