Which of the following is NOT an indication for a 12-lead EKG?

• A. Dehydration
• B. Chest pain or anginal equivalents
• C. Suspected Stroke
• D. Overdose

Answer: (A)

A 12-lead ECG is used to detect problems in the heart’s electrical activity that would change management—things like ischemia or infarction, rhythm disturbances, or conduction issues, and sometimes drug effects on the heart. Chest pain or anginal equivalents directly point to possible heart problems, so an ECG is essential to evaluate for ischemia or ACS. Overdose can cause dangerous conduction or rhythm problems, so an ECG helps guide treatment in those cases. Suspected stroke isn’t determined by an ECG, since stroke evaluation focuses on the brain, but arrhythmias can be relevant to stroke risk; however, it’s not a primary indication for a prehospital ECG. Dehydration, in contrast, doesn’t by itself indicate a need for 12-lead ECG because it’s a fluid-status issue rather than a cardiac electrical problem to diagnose or manage with ECG.