This ECG is from a man in his 60s who was found unconscious and hypoxic.

This ECG shows atrial tachycardia with negative P waves in V1-V2.

This ECG is from a male in his teens who presented with episodes of his hands turning cold and blue for several hours at a time.

This ECG is from a healthy young man who presented with chest pain. This was the initial ECG.

This ECG is from a man in his 70s who presented after an episode of palpitations at home. He had a past history of paroxysmal atrial fibrillation, CABG, diabetes and had undergone a MAZE procedure in the last 12 months.

This ECG is from a man in his 20s who presented with nausea and vomiting after drinking the night before.  He denied any chest pain or shortness of breath. The computer interpretation was "Acute STEMI".