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Updated: Oct 23, 2026

Prehospital Thrombolysis: A Manual from Berlin
Published on: November 26, 2013
Audit of thrombolysis initiated in an accident and emergency department
P A Nee1, A J Gray, M A Martin
1Stockport Infirmary, UK.
Insights
Early thrombolysis for acute myocardial infarction significantly reduces mortality. Implementing treatment in the A and E department, instead of the coronary care unit, drastically cut "door to needle" and "pain to needle" times without increasing adverse effects.
Area of Science:
- Cardiology
- Emergency Medicine
- Health Services Research
Background:
- Early thrombolytic therapy is crucial for reducing mortality in acute myocardial infarction (AMI).
- In-hospital delays in administering thrombolysis contribute to poorer patient outcomes.
- Optimizing treatment pathways in emergency settings is essential for timely AMI care.
Purpose of the Study:
- To evaluate a novel system for reducing in-hospital delays in administering thrombolysis for AMI.
- To compare "pain to needle" and "door to needle" times between traditional and modified treatment protocols.
- To assess the safety and efficacy of initiating thrombolysis in an Accident and Emergency (A and E) department.
Main Methods:
- A retrospective audit of 43 patients (group 1) who received thrombolysis in the Coronary Care Unit (CCU) after transfer.
- A prospective audit of 53 patients, with 23 (group 2b) receiving thrombolysis in the A and E department and 30 (group 2a) in the CCU.
- Thrombolysis administration in the A and E department was performed by medical staff after oral confirmation and ECG transmission.
Main Results:
- Patients receiving thrombolysis in the A and E department (group 2b) showed significantly reduced "door to needle" (38 min vs. 121 min) and "pain to needle" (141 min vs. 237 min) times compared to CCU administration.
- No significant difference in case mix, pre-hospital delay, or transfer time was observed between groups.
- The incidence of adverse effects and in-hospital mortality (9.9%) were not significantly different between the groups.
Conclusions:
- Initiating thrombolysis in the A and E department for selected acute myocardial infarction patients is safe and effective.
- This streamlined approach significantly reduces critical treatment delays, improving patient care pathways.
- Decentralizing early thrombolysis administration can lead to better clinical outcomes in AMI management.
Abstract:
Early thrombolytic therapy after acute myocardial infarction is important in reducing mortality. To evaluate a system for reducing in-hospital delays to thrombolysis pain to needle and door to needle times to thrombolysis were audited in a major accident and emergency (A and E) department of a district general hospital and its coronary care unit (CCU), situated about 5 km away. Baseline performance over six months was assessed retrospectively from notes of 43 consecutive patients (group 1) transferred to the CCU before receiving thrombolysis. Subsequently, selected patients (23) were allowed to receive thrombolysis in the A and E department before transfer to the CCU. The agent was administered by medical staff in the department after receiving oral confirmation of myocardial infarction from the admitting medical officer in the CCU on receipt of fax transmission of the electrocardiogram. A second prospective audit during six months from the start of the new procedure established time intervals in 23 patients eligible to receive thrombolysis in the A and E department (group 2b) and 30 ineligible patients who received thrombolysis in the CCU (group 2a). The groups did not differ significantly in case mix, pre-hospital delay, or transfer time to the CCU. In group 2b door to needle time and pain to needle time were reduced significantly (geometric mean 38 min v 121 min (group 2a) and 128 min (group 1); 141 min v 237 min (group 2a) and 242 min (group 1) respectively, both p < 0.0001). The incidence of adverse effects was not significantly different. Nine deaths occurred (six in group 1, three in group 2b), an in-hospital mortality of 9.9%. Thrombolysis can be safely instituted in the A and E department in selected patients, significantly reducing delay to treatment.
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