An electrocardiogram (ECG or EKG) records the heart's electrical activity through electrodes placed on the skin, providing information about heart rate, rhythm, and any damage to heart muscle. This non-invasive, painless test takes just minutes to perform but provides valuable diagnostic information for conditions including heart attacks, arrhythmias, conduction abnormalities, electrolyte imbalances, and effects of certain medications. For travelers with heart conditions, obtaining an ECG in unfamiliar settings can be crucial if new symptoms develop or as a precautionary measure before engaging in strenuous activities. The test involves attaching 10-12 small adhesive electrodes to the chest, arms, and legs while lying still for a few minutes as the machine records electrical signals. Results are typically available immediately and can be interpreted by a cardiologist. Mexican private hospitals and clinics in tourist areas often have state-of-the-art ECG equipment comparable to US facilities but at significantly lower costs, with tests often available without long wait times.

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