Overcoming barriers to developing seamless ST-segment elevation myocardial infarction care systems in the United States: recommendations from a comprehensive Prehospital 12-lead Electrocardiogram Working Group.

BACKGROUND: Reducing time to reperfusion treatment for patients with ST-segment elevation myocardial infarction (STEMI) improves patient outcomes. Few medical systems consistently meet current benchmarks regarding timely access to treatment. Studies have widely demonstrated that prehospital 12-lead electrocardiography can facilitate early catheterization laboratory activation and is the most effective means of decreasing patients' time to treatment. METHODS: We gathered experts to examine the barriers to implementation of prehospital 12-lead electrocardiographic monitoring and transmission to in-hospital cardiologists in creating seamless STEMI care systems (STEMI-CS) and propose multidisciplinary approaches to overcoming these barriers. RESULTS AND CONCLUSIONS: Physicians, hospital systems, and emergency medical services often lack coordination of care delivery and receive fragmented funding and oversight. Clinical and regulatory guidelines do not emphasize local solutions to achieving clinical benchmarks, do not target incentives at all components of the STEMI-CS, and underemphasize risk-based approaches to protecting patient health. Integration of the multiple complex components involved in STEMI-CS is essential to improving care delivery.

Lack of impact of paramedic training and use of the cincinnati prehospital stroke scale on stroke patient identification and on-scene time.

BACKGROUND AND PURPOSE: The Cincinnati Prehospital Stroke Scale (CPSS) is recommended for emergency medical services use in identifying patients with stroke. Data evaluating its performance in the field are limited. We assessed the impact of training and use of the CPSS on the accuracy of paramedics' stroke patient identification and on-scene time. METHODS: A 1-hour interactive educational presentation on the use of the CPSS was conducted for paramedics transporting patients to an academic medical center. Patients with stroke/transient ischemic attack (TIA) were identified retrospectively from paramedic records and were compared with the hospital's prospective stroke registry for the year before and after the training. RESULTS: There were 154 patients with suspected stroke/transient ischemic attack identified (56% women, 53% white, 44% black, mean age 67+/-16 years). There was no difference in paramedics' use of the CPSS (37.5% versus 23.8%, P=0.123) or accuracy of stroke/TIA patient identification (40.5% versus 38.9%, P=0.859) before and after training. Of responsive patients identified by paramedics as having a stroke/TIA, 57% had an abnormality in at least one CPSS item with no effect on on-scene time (17+/-6 minutes with a normal versus 18+/-6 minutes with an abnormal CPSS, P=0.492). Those with a final diagnosis of stroke/TIA (n=61, 40%) more frequently had at least one abnormal CPSS item (70% versus 30%, P=0.008, sensitivity 0.71, specificity 0.52) with 49% of patients with an abnormality having a discharge diagnosis of stroke/TIA. CONCLUSIONS: Paramedic training in the CPSS, or its use, had no impact on the accuracy of their identification of patients with stroke/TIA or on-scene time.

Comparison of the five-electrode-derived EASI electrocardiogram to the Mason Likar electrocardiogram in the prehospital setting.

This study compared the 5-electrode-derived EASI electrocardiogram (ECG) with the conventional Mason-Likar ECG in 200 consecutive patients with chest pain transported to 3 hospitals by 2 different emergency medical services. No significant differences were observed between the 2 systems for the detection of relevant electrocardiographic abnormalities. A questionnaire administered to participating emergency medical personnel revealed a high degree of acceptability of the EASI ECG, with some participants commenting that the sternal and mid-axillary locations of the EASI electrodes made them easier to apply, especially to women, than conventional precordial electrodes.