Cardiac Assessment and ECG Interpretation Practice Test

An 88-year-old female presents with nausea, vomiting, and visual disturbances described as 'yellow halos around lights.' She takes digoxin for chronic atrial fibrillation. Her ECG shows a regular rhythm at 40 bpm with a 'scooped' appearance to the ST-segments and flattened T-waves.

An asymptomatic 25-year-old athlete undergoes a routine screening 12-lead ECG. The ECG shows 2 mm of concave ST elevation in leads V2-V5. A prominent notch is visible at the junction of the QRS complex and the ST-segment (J-point). The T-waves are tall and concordant with the QRS.