Prehospital Point-of-Care Hs-Troponin I for Rule-Out of Acute Myocardial Infarction in Patients Without ST-Segment Elevation

People who call emergency medical services (EMS) with chest pain or other possible heart-related symptoms are often taken to hospital for further testing. However, only a small proportion of these patients are ultimately diagnosed with a serious heart condition such as a heart attack. This means that many patients undergo hospital transport and evaluation even though their risk is low. In hospitals, a blood test called high-sensitivity cardiac troponin is commonly used to help diagnose or rule out heart attacks. It is not yet well established whether this type of test can be used safely and effectively earlier, in the prehospital setting. This study will investigate whether it is feasible to measure high-sensitivity troponin in the ambulance and how well the test can identify patients at low risk of serious heart conditions. A small blood sample will be taken as part of routine care and analyzed using a portable device. The test result will not be used to guide treatment or decisions during the study. The study will assess how well the test predicts heart-related events within 30 days and how practical it is to perform the test in real-life emergency settings. The results may help guide future research on how to improve early assessment and decision-making for patients with suspected heart disease.