What is the normal standardization of an ECG machine?

The normal standardization of an ECG machine is set at 10 mm/mV. This means that for every 1 millivolt (mV) of electrical activity detected by the ECG electrodes, the resultant deflection on the ECG tracing will measure 10 millimeters in height. This standard is critical because it ensures that the amplitude of the electrical signals from the heart is accurately represented on the ECG, allowing for proper interpretation and diagnosis.

A common standardization speed is also set for ECG recording at 25 mm/second, but when it comes to vertical calibration, the standard height is indeed 10 mm per millivolt. Therefore, while the reference provided in the answer might seem correct, it's important to emphasize that 10 mm is the adequate representation of standardization height.

Your answer suggests a misunderstanding of the vertical standardization height; instead, it's 10 mm for 1 mV, which ensures that ECG readings are consistent and comparable across different recordings and patients. This standardization is vital for accurately diagnosing conditions based on the amplitude of the electrical signals and allows practitioners to make informed decisions regarding patient care.