Related Experiment Video
Updated: Aug 2, 2026

Prehospital Thrombolysis: A Manual from Berlin
Published on: November 27, 2013
Effect of continuous quality improvement methods on reducing triage to thrombolytic interval for acute myocardial
Insights
Continuous quality improvement (CQI) interventions significantly reduced treatment times for acute myocardial infarction (AMI) patients. This enhanced the timeliness of thrombolytic therapy in the emergency department (ED), improving patient outcomes.
Area of Science:
- Emergency Medicine
- Cardiology
- Quality Improvement Science
Background:
- Timely administration of thrombolytic therapy is critical for patients with acute myocardial infarction (AMI).
- Previous studies highlight the importance of rapid intervention in reducing AMI-related morbidity and mortality.
- Continuous Quality Improvement (CQI) methodologies offer a framework for optimizing clinical processes.
Purpose of the Study:
- To evaluate the impact of CQI interventions on the timeliness of thrombolytic therapy for emergency department (ED) patients diagnosed with AMI.
- To compare pre- and post-intervention treatment times to assess the effectiveness of quality improvement strategies.
Main Methods:
- A retrospective, historical comparison study design was employed.
- Triage-to-thrombolytic and triage-to-ECG time intervals were analyzed using chart reviews.
- Interventions included a standardized triage protocol, CQI review, and direct staff feedback.
Main Results:
- The mean triage-to-thrombolytic interval was significantly shorter in the intervention group (40.0 +/- 22 min) compared to the control group (72 +/- 25 min; p < 0.0001).
- The mean triage-to-ECG interval also showed significant improvement in the intervention group (8.5 +/- 7.5 min) versus the control group (16.5 +/- 8.9 min; p < 0.0001).
- Post-intervention, 79% of patients received thrombolytic therapy within 60 minutes, compared to 39% in the control group; 39% received therapy within 30 minutes versus 3% in the control group.
Conclusions:
- CQI techniques, including comprehensive chart review, systems analysis, and staff feedback, demonstrably improved the timeliness of thrombolytic therapy for AMI patients in the ED.
- The implemented CQI strategies facilitated a higher percentage of patients receiving timely treatment within recommended guidelines (79% within 60 minutes).
Objectives:
To assess the timeliness of thrombolytic therapy in the ED for selected patients with acute myocardial infarction (AMI) following continuous quality improvement (CQI) interventions.
Methods:
A retrospective, historical comparison study was performed of triage-to-thrombolytic time intervals for AMI patients using chart review for data collection. Patients treated after implementation of the CQI process vs a historical control group were compared. The patients with AMI who had received thrombolytics during the one-year period prior to the CQI interventions and who had documentation of time intervals served as the control group. The patients treated during a four-month period, beginning about one and a half years following introduction of the CQI interventions, served as the intervention group. Interventions included: a triage protocol, CQI review, and staff feedback.
Results:
The mean triage-to-thrombolytic interval was longer for the control group (72 +/- 25 vs 40.0 +/- 22 min; p < 0.0001). The mean triage-to-ECG interval also was longer for the control group (16.5 +/- 8.9 vs 8.5 +/- 7.5 min; p < 0.0001). Most (79%) of the study group received thrombolytic therapy within 60 minutes, and 39% within 30 minutes, whereas 39% of the control group received thrombolytic therapy within 60 minutes, and 3% within 30 minutes.
Conclusion:
The implementation of CQI techniques, including 100% chart review, intensive systems analysis, and staff feedback, had a positive effect on the timeliness of thrombolytic therapy for the ED patients who had AMI. As a result, most (79%) of the patients received therapy within the 60-minute time window recommended currently by the American Heart Association.
More Related Videos
Related Concept Videos
Coronary Artery Disease V: Interprofessional Care
Acute Coronary Syndrome I: Introduction
Acute Coronary Syndrome III: Diagnostic Studies
Acute Coronary Syndrome IV: Interprofessional Care
Angina IV: Management
Angina V: Nursing Management

