Question

How do electrocardiograms affect people?

a. Positively, it helps to diagnose heart disease
c. Negatively, it can tell others when you are lying
b. Negatively, it conducts electricity into the body
d. Positively, doctors can use it to treat asthma

Answer 1

The correct answer is A, positively, it helps to diagnose heart disease.
An electrocardiogram records the electrical activity of your heart at rest. It provides information about the heart rate and rhythm, and shows if there is enlargement of the heart due to high blood pressure or evidence of a previous heart attack.