Er.....no actually
It may be advisable to be thorough and investigate true pathology but we may surmise that the electrodes were dry so the operator had to hold them. This makes the ECG unreliable and could well have changed it from normal to abnormal
In this case, even forgetting about the stress, cost and effects of loss of license, unnecessary tests were undertaken. Far from being a good thing they incurred unnecessary risk. We don't know what the tests were so can't evaluate risk but thallium scans and amigos have a risk