Kahraman Coşansu, Hüseyin Altuğ Çakmak, Erkan Yıldırım

Keywords: ST elevation myocardial infarction, electrocardiography, smartphone application, percutaneous coronary intervention


Introduction: This study aimed to determine the mean time for diagnosis of acute ST-segment elevation myocardial infarction (STEMI) for both working hours (WHs) and non-WHs (NWHs) during the period that a smartphone application was in use to aid the speed of diagnosis and any significant difference in diagnosis times during NWHs with and without use of the application. Patients and Methods: In this retrospective study, 174 patients who had been diagnosed with STEMI and transferred for primary percutaneous coronary intervention between January 2013 and April 2014 were recruited. During this period, the hospital used a smartphone application to aid diagnosis during NWHs. In addition, 58 patients who were diagnosed with STEMI during NWHs between January 2012 and November 2012, either by a cardiologist called to the emergency department or an electrocardiography being sent to the cardiologist's e-mail from a hospital computer, were enrolled. Results: After the smartphone application was used, patients were diagnosed in a mean time of 7.9 ± 1.7 min during WHs, whereas STEMI was diagnosed in a mean time of 8.2 ± 1.4 min during NWHs. There was no statistically significant difference in diagnosis times between WHs and NWHs (p= 0.143). However, before the application was used, the mean time for the diagnosis of STEMI was 18.0 ± 3.1 min during NWHs, and consequently, there was a significant difference in STEMI diagnosis times during NWHs before and after the application began to be used (p< 0.001). Conclusion: The application of smartphones, especially during NWHs at non-percutaneous coronary intervention-capable centres, can significantly reduce delays in STEMI treatment, which can result in improved short- and long-term clinical outcomes.