criteria for thrombolysis in myocardial infarction
Last reviewed 01/2018
Four criteria should be met before thrombolysis is initiated:
- definite clinical diagnosis of acute myocardial infarction
- short interval since the onset of symptoms:
- normally 12 hr
- treat up to 24 hr if ST elevation is persisting and the infarct is large
- ECG signs:
- regional ST elevation of >2 mm in chest leads and >1 mm in limb leads
- regional ST depression in cases of posterior infarction
- left bundle branch block
- no contraindications to thrombolysis present
contraindications to thrombolytic therapy