ST segment
Medical term EKG and Cardiovascular Testing
The EKG section between the QRS complex and the T wave; elevation can signal an acute heart attack and depression can signal ischemia.
Sources
Related terms
- acuteDescribes a condition with sudden onset and usually short duration.
- QRS complexThe EKG waveform showing ventricular depolarization.
- T waveThe EKG wave showing ventricular repolarization (recovery).
- SA nodeSinoatrial node: the heart's natural pacemaker in the right atrium, where each normal beat starts.
- sinus bradycardiaA regular rhythm from the SA node at fewer than 60 beats per minute.
- sinus tachycardiaA regular rhythm from the SA node at more than 100 beats per minute.
- somatic tremorEKG artifact from muscle movement or shivering that makes the baseline jittery.
- stress testA test of the heart during exercise or with medicine that makes the heart work harder, often with EKG…
- stroke volumeThe amount of blood the left ventricle pumps with each beat.
- systoleThe phase of the heartbeat when the heart muscle contracts.