ST depression

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ST Depression

ST depression (/ɛs tiː dɪˈprɛʃən/) refers to a finding on an electrocardiogram (ECG), wherein the trace in the ST segment is abnormally low below the baseline. It is an indication of myocardial ischemia, a condition in which the heart muscle is deprived of adequate oxygen supply.

Etymology

The term "ST" refers to the interval on an ECG between the end of the S wave and the beginning of the T wave. "Depression" in this context refers to the lowering of the ST segment below the baseline, which is a sign of abnormal cardiac activity.

Related Terms

  • Myocardial Ischemia: A condition characterized by reduced blood flow to the heart muscle, often marked by ST depression on an ECG.
  • Electrocardiogram: A test that measures the electrical activity of the heartbeat. ST depression is a finding on an ECG.
  • ST Elevation: The opposite of ST depression, ST elevation refers to a particular pattern on an ECG where the trace in the ST segment is abnormally high above the baseline.
  • Angina Pectoris: Chest pain or discomfort due to coronary heart disease. It often occurs when the heart muscle doesn't get as much blood as it needs, a condition that can be indicated by ST depression.
  • Myocardial Infarction: Commonly known as a heart attack, it is a serious condition where the blood supply to the heart is suddenly blocked, often identified by ST elevation or depression on an ECG.

See Also

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