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Coronary angioplasty in unstable angina: contemporary experience
A E Moreyra1, S T Palmeri, A C Wilson
1Robert Wood Johnson Medical School, Department of Medicine, New Brunswick, NJ 08903-0019, USA.
Insights
Percutaneous transluminal coronary angioplasty (PTCA) is effective and safe for unstable angina, with success rates comparable to stable angina. Early treatment within 48 hours significantly reduces hospital stay without impacting outcomes.
Area of Science:
- Cardiology
- Interventional Cardiology
- Clinical Medicine
Background:
- Unstable angina is a critical condition requiring timely intervention.
- Percutaneous transluminal coronary angioplasty (PTCA) is a common revascularization technique.
- Evaluating PTCA's efficacy in unstable angina is crucial for treatment guidelines.
Purpose of the Study:
- To assess the effectiveness and safety of PTCA in patients presenting with unstable angina.
- To compare PTCA outcomes in unstable angina patients with those of stable angina patients.
- To determine the impact of early versus late PTCA intervention on outcomes in unstable angina.
Main Methods:
- Retrospective analysis of hospital discharge administrative records and catheterization reports.
- Inclusion of all acute care hospital discharges from 1987-1993 at a tertiary care teaching hospital.
- Identification of patients undergoing PTCA with unstable angina as the primary indication.
Main Results:
- PTCA success rate in unstable angina patients was 91%, higher than the 86% in stable angina patients.
- Major complication rates were low and similar between unstable (3.7%) and stable (3.4%) angina groups.
- Early PTCA (within 48 hours) showed similar success and complication rates but significantly shorter hospital stays compared to late PTCA.
Conclusions:
- PTCA is an effective and safe treatment option for patients with unstable angina.
- Outcomes of PTCA in unstable angina are comparable to those in stable angina.
- Early intervention with PTCA in unstable angina patients reduces hospital length of stay without compromising safety or efficacy.
Objective:
To evaluate the role of percutaneous transluminal coronary angioplasty (PTCA) in the treatment of patients with unstable angina.
Design:
Retrospective analysis of administrative records of all acute care hospital discharges at Robert Wood Johnson University Hospital from 1987 to 1993 with International Classification of Diseases, 9th revision, codes for coronary angioplasty and corresponding catheterization laboratory reports.
Setting:
Tertiary care teaching hospital.
Results:
Of 4826 PTCA cases, unstable angina was identified in 780 as the main indication for the procedure. Baseline clinical features of patients with unstable angina were not different from those in patients with stable angina. The overall success rate for PTCA in patients with unstable angina was significantly higher (707 of 780, 91%) than the success rate in patients with stable angina (3466 of 4046, 86%). The major complication rate in unstable angina patients was low (29 of 780, 3.7%) and did not differ from that in stable angina patients (136 of 4046, 3.4%). The success and complication rates in patients with unstable angina were analyzed in terms of time of PTCA, ie, early (less than 48 h from admission) versus late (48 h or more from admission). The procedure was successful in 343 of 380 (90%) patients treated early and 364 of 400 (91%) patients treated late (not significant), and the complication rates were low (12 of 380, 3.2% versus 17 of 400, 4.3%; not significant in both groups). However, length of hospital stay was considerably shorter for patients treated early than for patients treated late (4.5 +/- 3.3 days versus 10.4 +/- 6.6 days, respectively, P < 0.0001).
Conclusion:
Contemporary results of PTCA in patients with unstable angina parallel those reported for stable angina. Thus, PTCA appears to be an effective and safe treatment for unstable angina patients, and treating these patients soon after admission does not appear to affect the success or complication rates.