Category: A

A fabric, film, or paper, one side of which is coated with an adhesive so that it remains in place when applied to the skin. In general, there are two types of backings for the adhesive material: occlusive and nonocclusive. The former prevents air from going through the backing and the latter does not. The…

Tachycardia due to increased activity of the AV junction. The rate is usually from 120 to 180 bpm.  

The most common supraventricular tachycardia, resulting from abnormal conduction of electrical impulses through a self-sustaining circuit in the atrioventricular node. It occurs more often in women than in men, often in their twenties. The heart rate is usually between 150 and 250 bpm.  

A rapid regular heart rate arising from an irritable focus in the atria, with a rate of more than 100 beats per minute but less than 220 bpm.  

The contraction of the atria; it occurs before the contraction of the ventricles. About a fourth of the blood that fills the ventricles is squeezed into them during atrial systole. In atrial fibrillation, the atria beat erratically without a defined contraction, and ventricular filling is impaired. Colloquially, atrial systole is called the “atrial kick.  

The rebound or recoil of the stretched elastic walls of the arteries following ventricular systole.  

A systole that is aborted because it occurs before the ventricle is filled.  

A premature cardiac systole in which arterial pressure is increased little if at all because of inadequate filling of ventricles resulting from shortening of the preceding diastole.