Cardiology Teaching Package
A Beginners Guide to Normal Heart Function, Sinus Rhythm & Common Cardiac Arrhythmias
ECG Changes Associated with Myocardial Injury
Previously we discussed the two categories for myocardial injury that existed prior to 2001:
- Acute Myocardial Infarction with ST segment elevation and cardiac (ischaemic) chest pain
- Unstable Angina with ST segment depression/T wave inversion and cardiac (ischaemic) chest pain.
Below are rhythm strip examples of specific ECG changes:
Image: ST Elevation
Image: ST Depression
Image: T Wave Invesion
Image: Flat T Wave
It is now possible to identify a third condition that is a smaller myocardial infarction but with ECG changes consistent with unstable angina. The two conditions can now be differentiated by a Troponin blood test.
