Condition | ST Shape | Site | P wave PR depression | Reciprocal Changes | Q waves | T waves |
STEMI (Dynamic) | Convex 94%ppv* | Territorial |
| Common | Will develop | Hyperacute large amplitude |
Pericarditis (Dynamic slower) | Concave/ saddle shape | Global | PR depression | AVR not AVL | No | ST:T wave ratio >0.25 |
BER | Concave notch at J point | Mostly chest leads |
| AVR in 50% | No | May have large amplitude |
Ventricular aneurysm (Static) |
| Mainly Anterior |
| May be present | Anterior | Small amplitude |
Brugada syndrome | Downward sloping | V1 and V2 |
| No | No | Normal |
LBBB |
| Anterior and inferior discordant to QRS normally |
| Present | As part of the LBBB pattern | May have large amplitude |
Pulmonary embolism |
| Changes normally antero septal and inferior |
|
|
| Inverted in inferior or anteroseptal leads |
Hyperkalaemia | Downward sloping |
| Low amplitude or absent |
|
| Tall tented T waves |
SAH |
| Anterior or diffuse |
|
| Maybe present | May have T wave inversion |
* ppv- positive predictive value