How many leads are connected to a patient for obtaining a standard ECG?

How many leads are connected to a patient for obtaining a standard ECG?
  1. Two
  2. Three
  3. Four
  4. Five

Solution

For obtaining a standard ECG a patient is connected to the machine with three electrical leads (one to each wrist and to the left ankle) that continuously monitor the heart activity.

Asked in: NCERT

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