What does any deviation from the standard shape of ECG indicate?

What does any deviation from the standard shape of ECG indicate?
  1. Normalcy
  2. Abnormality or disease
  3. Heart rate
  4. Cardiac cycle

Solution

Since ECGs obtained from different individuals have roughly the same shape for a given lead configuration, any deviation from this shape indicates a possible abnormality or disease.

Asked in: NCERT

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