Q: What does a variation in ECG mean? Why is a 2D Echo test done? Is a Stress Test a substitute for a 2D Echo test?

A:1. Variation in ECG usually means a change in a person’s ECG from an earlier one. 2. 2D echo gives valuable information on the structure and function of the heart muscle, valves, pumping chambers etc. 3. A Stress Test is not a substitute for 2D echo test.