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|+'''Evolution of the ECG during a myocardial infarct''' | |+'''Evolution of the ECG during a myocardial infarct''' | ||
|- | |- | ||
! | !Time from onset of symptoms | ||
! | !ECG | ||
! | !Changes in the heart | ||
|- | |- | ||
!minutes | !minutes | ||
| hyperacute T waves (tall T waves), ST-elevation | |||
| reversible ischemic damage | |||
| hyperacute T waves ( | |||
ST-elevation | |||
|- | |- | ||
!hours | !hours | ||
| ST-elevation, with terminal negative T waves, negative T waves (these can last for days to months) | |||
| onset of myocardial necrosis [[Image:Heart_ant_wall_infarction.jpg|left|150px|Thumb|An acute anterior myocardial infarction typically shows ST elevation on the ECG]] | |||
| ST-elevation, with terminal negative T | |||
negative T | |||
|- | |- | ||
!days | !days | ||
| | | [[Pathologic Q Waves]] | ||
| [[ | | scar formation [[Image:Heart_ant_wall_scar_sa.jpg|left|150px|Thumb|A transmural anterior myocardial infarction with scar formation and [[Pathologic Q Waves]]]] | ||
|- | |- | ||
|} | |} | ||
{{clr}} | {{clr}} | ||