Question

What is made horizontally on electrocardiogram?

(a) time measurements and heart rate measurements

(b) only heart Rate Measurements

(c) only time Measurements

(d) not fixed and can be any thing

The question was asked during an interview.

Enquiry is from Biotelemetry Application on Wimax Networks in section Biomedical Telemetry of Biomedical Instrumentation

Answer 1

Right choice is (a) time measurements and heart rate measurements

To elaborate: Time measurements and heart rate measurements are made horizontally on the electrocardiogram. Electrocardiograms are almost invariably recorded on graph paper with horizontal and vertical lines at 1 mm intervals with a thicker line at 5 mm intervals.