Question: what is the diagnosis, and what does this have in common with Joansie in the Hunt for the Red October?

The diagnosis is severe hyperkalemia. Clues include:

• Very broad QRS complex (>200 ms).
• Relatively pointed T-wave in the precordial leads (normally a QRS complex this broad would be followed by a blunter T-wave). A slow depolarization (prolonged QRS interval) should be followed by a slow repolarization (blunt, rounded T-wave).
• P-waves are flattened with an increased PR interval.
• The limb leads look like they are beginning to take on a sine-wave configuration, which is another morphology associated with hyperkalemia.

The computer is fooled into thinking the patient has a MI. Hyperkalemia is notorious for causing pseudo-infarction patterns on ECG.

The computer's ECG algorithm was trained to detect MI, so it tends to default toward an MI diagnosis when it gets confused. This is similar to the submarine's computer algorithm in the Hunt for the Red October: