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Determining appropriateness of coronary thrombolysis in the emergency department
M Schull1, R N Battista, J Brophy
1Department of Emergency Medicine, Jewish General Hospital, McGill University, Montreal, Canada. mbba@musica.mcgill.ca
Insights
Emergency physicians showed high appropriateness in decisions about coronary thrombolysis, aligning well with Canadian guidelines. This study provides new insights into individual physician decision-making rates for acute ischemic coronary syndrome.
Area of Science:
- Cardiology
- Emergency Medicine
- Health Services Research
Background:
- Coronary thrombolysis is a critical treatment for acute ischemic coronary syndrome.
- Assessing the appropriateness of emergency physician decision-making is vital for patient outcomes.
- Standard Canadian guidelines provide a benchmark for thrombolysis decisions.
Purpose of the Study:
- To evaluate the appropriateness of emergency physician decisions regarding coronary thrombolysis.
- To compare physician decisions against established Canadian guidelines.
- To estimate individual emergency physician appropriateness rates.
Main Methods:
- Retrospective chart review of patients with acute ischemic coronary syndrome.
- Inclusion of both thrombolysed and non-thrombolysed patients.
- Blinded assessment of decisions against Canadian guidelines using adjusted kappa statistics.
Main Results:
- Excellent overall agreement (kappa = .85) between physician decisions and guidelines.
- High appropriateness rates for thrombolysed (80.6%) and non-thrombolysed (97.2%) patients.
- Estimated mean individual physician appropriateness rate of 91.3%.
Conclusions:
- Emergency physician decisions on coronary thrombolysis demonstrate excellent agreement with Canadian guidelines.
- The study provides the first estimates of individual physician appropriateness rates for thrombolysis decisions.
- Findings support the consistent application of guidelines in emergency settings for acute ischemic coronary syndrome.
Study Objective:
To estimate the appropriateness of decision-making by emergency physicians regarding coronary thrombolysis.
Methods:
We conducted a retrospective chart review of patients admitted over a period of 13 months from a tertiary care center emergency department with a diagnosis of an acute ischemic coronary syndrome. Both thrombolysed and nonthrombolysed patients were eligible for inclusion. The decisions of emergency physicians to use or not use thrombolytics were compared with standard Canadian guidelines, based on the blinded assessments of two reviewers. Appropriateness was estimated with the use of adjusted kappa statistics, and a hierarchical statistical model was developed to estimate the distribution of appropriate decision-making rates for individual emergency physicians.
Results:
The overall adjusted kappa for appropriateness was .85 (95% confidence interval [CI], .76 to .94). The appropriateness rate for thrombolysed patients was 80.6% (95% CI, 62.5 to 92.5), and for nonthrombolysed patients it was 97.2% (95% CI, 91.9 to 99.4). The distribution of individual emergency physician appropriateness rates had an estimated mean of 91.3% and a 95% CI of 81.3% to 97.7%. Complication rates were not significantly different from previously published rates.
Conclusion:
This study demonstrates excellent agreement between emergency physicians' decisions regarding thrombolysis and standard Canadian guidelines, based on an adjusted kappa statistic. The distribution of individual emergency physician appropriateness rates and the appropriateness rate for nonthrombolysed patients are estimated for the first time.