Final answer:
ST segment depression on an EKG indicates a lack of blood flow and oxygen to the heart muscle.
Step-by-step explanation:
A normal ECG tracing consists of several components, including the P wave, the QRS complex, and the T wave. The ST segment is the part of the ECG between the end of the QRS complex and the beginning of the T wave. ST segment depression refers to a downward shift of the ST segment below the baseline.
ST segment depression can be seen in various cardiac conditions, such as ischemia or myocardial infarction. It can also occur in non-cardiac conditions, such as hypothyroidism or electrolyte imbalances.
When the ST segment is depressed, it indicates that there may be a lack of blood flow and oxygen to the heart muscle.