Fig. 5: Flow diagram of the emergency department workflow.

a A flow chart of the emergency department process, starting with the ED visit and triage. Depending on the triage level and symptoms, an ECG may be performed prior to physician assessment. The physician then evaluates the patient and, as appropriate, orders further tests, including potassium measurements. This may lead to additional medical orders and an examination report. b Four examples of different patient timelines for hyperkalemia demonstrate how ECG, laboratory tests, physician assessments, and AI-ECG alerts (AIDE) can occur in different scenarios. Patient 1 undergoes an ECG and laboratory test around the same time, with treatment prior to the laboratory report; Patient 2 receives an ECG and is treated on the basis of the AI-ECG alert prior to laboratory testing; Patient 3 receives an ECG and is treated on the basis of subsequent laboratory testing and reports; Patient 4 undergoes a laboratory test with hyperkalemia and is treated after the AIDE alert.