systole
Medical term EKG and Cardiovascular Testing
The phase of the heartbeat when the heart muscle contracts.
Sources
Related terms
- somatic tremorEKG artifact from muscle movement or shivering that makes the baseline jittery.
- ST segmentThe EKG section between the QRS complex and the T wave; elevation can signal an acute heart attack and…
- 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.
- T waveThe EKG wave showing ventricular repolarization (recovery).
- ventricular fibrillationA chaotic, life-threatening rhythm in which the ventricles quiver and blood is not pumped; it needs…
- ventricular tachycardiaA fast, life-threatening rhythm from the ventricles with wide QRS complexes.