Cardiology Teaching Package
A Beginners Guide to Normal Heart Function, Sinus Rhythm & Common Cardiac Arrhythmias
ST Segment Changes
When the heart muscle is affected by myocardial infarction or ischaemia, the ECG changes that occur concern the ST segment. Below is a sinus complex, or normal heart beat, with the ST segment highlighted.
Image: ST Segment
the above picture shows a normal sinus complex with a normal ST segment flat on the iso-electric line.
