<prompt> Positive ECG signs of ischemia in Tread mill test is are-Upsloping depression of the ST segment mV below baselineDownsloping depression of the ST segment 0.1 mV below baselineJunctional ST-segmentTachycardia  <response>: Answer- B. Downsloping depression of the ST segment 0.1 mV below baselineThc ischemia ST:-segment respone generally is defined as flat or downsloping depression of the ST segmant O.1 mVbelow baseline i.e., tha PR segnent and lasting longer than O.08s.Upsloping or junctional ST-segment changes are not considered characteristic of ischemia and do not constitute a positive test. 