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Inappropriate dispatcher decision for emergency medical service users with acute myocardial infarction
Magali Fourny1, Anne-Sophie Lucas, Loïc Belle
1Grenoble University Hospital, France.
Insights
Inappropriate emergency medical service (EMS) dispatcher decisions for ST-elevation myocardial infarction (STEMI) occur in 30% of cases, significantly delaying reperfusion therapy. Improving telephone triage accuracy is crucial for acute coronary syndrome patients.
Area of Science:
- Cardiology
- Emergency Medicine
- Public Health
Background:
- Prehospital emergency medical services (EMS) are recommended for ST-elevation myocardial infarction (STEMI) patients.
- The accuracy of initial dispatcher decisions in STEMI cases is critical for timely treatment.
Purpose of the Study:
- To estimate the percentage of inappropriate initial dispatcher decisions for STEMI patients.
- To determine the impact of these decisions on reperfusion therapy delays.
Main Methods:
- Analysis of data from 245 STEMI patients in a prospective regional registry.
- Calculation of time to reperfusion therapy from the initial patient call.
Main Results:
- 70% of initial dispatcher decisions were appropriate; 30% were inappropriate.
- Inappropriate decisions led to significant delays in reperfusion therapy for both fibrinolysis and primary percutaneous coronary intervention.
- No significant difference in in-hospital mortality was observed between groups.
Conclusions:
- Inappropriate initial dispatcher decisions for STEMI patients are common (30%) and cause substantial delays in reperfusion.
- Improving the accuracy of telephone triage for suspected acute coronary syndrome is essential.
Objectives:
Current guidelines recommend utilization of prehospital emergency medical services (EMSs) by patients with ST-elevation myocardial infarction (STEMI). The aims of this study were to estimate the percentage of inappropriate initial dispatcher decisions and determine their impact on delays in reperfusion therapy for EMS users with STEMI.
Methods:
As part of a prospective regional registry of patients with STEMI, we analyzed the original data for 245 patients who called a university hospital-affiliated EMS call center in France. The primary study outcome was time to reperfusion therapy calculated from the documented date and time of the first patient call.
Results:
The initial EMS dispatcher's decision was appropriate (ie, dispatching a mobile intensive care unit staffed by an emergency or critical care physician) for 171 (70%) patients and inappropriate for 74 (30%) patients. Inappropriate decisions included referring the patient to a family physician (n = 59), providing medical advice (n = 9), and dispatching an ambulance (n = 6). Inappropriate initial decisions resulted in increased median time to reperfusion for 140 patients receiving fibrinolysis (95 vs 53 minutes; P < .001) and 91 patients undergoing primary percutaneous coronary intervention (170 vs 107 minutes; P < .001). In-hospital mortality was not different between the 2 study groups (6.8% vs 9.9%; P = .42).
Conclusion:
The initial dispatcher's decision is inappropriate for 30% of EMS users with STEMI and results in substantial delays in time to reperfusion therapy. Accuracy of telephone triage should be improved for patients who activate EMSs in response to symptoms suggestive of acute coronary syndrome.
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