1. ppm/LBBB + unstable/sgarbossa
ppm = percuatenous pacemaker (LBBB morphology + pacer spikes)
LBBB = left bundle branch block (widened QRS >120ms)
sgarbossa criteria (inappropriate concordance)
modified smith criteria (excessive discordance)
2. VR st elevation
left main artery occlusion
VR st elevation >1mm
3. deWinters
proximal left anterior descending artery occlusion
precordial lead st depression + hyperacute t waves
4. posterior MI
right coronary artery occlusion (90%)
left coronary artery occlusion (10%)
V1-3 st depression
5. out-of-hospital cardiac arrest WITHOUT unfavorable features
unfavorable features =
traumatic arrest
unwitnessed arrest
unwitnessed cpr
asystole/PEA
>30min ROSC
pH <7.2 | lactate >7 | age >85yr
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