Role of the emergency department in decreasing the time to thrombolytic therapy in acute myocardial infarction.

Delay from the onset of acute myocardial infarction (AMI) symptoms to initiation of thrombolytic therapy can be reduced by improving patient recognition of AMI symptoms and encouraging speedier action in seeking medical assistance and improving the time it takes for medical personnel to evaluate the patient's symptoms and initiate appropriate therapy. Attempts to improve patient response to AMI symptoms have met with limited success. Prehospital administration of thrombolytic drugs may be of value, but many AMI patients are not transported by the emergency medical services system. As the hospital entry point for both ambulance patients and walk-ins, the emergency department (ED) is a major focal point for influencing the timing of thrombolytic therapy. Unfortunately, much of what is known about the time sequence of ED thrombolytic therapy in the United States comes from organized trials in a small number of centers. Little is known about how often non-ED physicians participate in the decision-making process (either in person or by phone consultation), or how many delays are potentially avoidable. Current evidence suggests that preestablished ED treatment plans and protocols can reduce the time delay for many patients who present with AMI, especially if paramedics can transmit diagnostic quality ECGs to the hospital.