Tuesday, July 6, 2010

ECG changes in MI

General ECG Changes suggestive of acute MI
1. New left ventricular strain pattern
2. New Left Bundle Branch Block
3. Q Waves (.04 sec and 1/3 height of R Wave)
Unless isolated in Lead III
4. T Wave inversion
Unless isolated to Lead III or Lead V1
5. ST-T elevation (more than 1mm in limb or precordial leads)
6. ST depression in Lead V1, Lead V2 (Posterior MI)
7. Hyperacute T Waves (over 50% of preceding R)


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