Paroxysmal atrial tachycardia may be caused by several different things. The fast rate may be triggered by a premature atrial beat that sends an impulse along an abnormal electrical path to the ventricles.Other causes stem from anxiety, stimulants, overactive thyroid, and in some women, the onset of menstruation.aroxysmal atrial tachycardia may be caused by several different things. The fast rate may be triggered by a premature atrial beat that sends an impulse along an abnormal electrical path to the ventricles.
Definition of mooch for English Language Learners. : to ask for and get things from other people without paying for them or doing anything for them.
If you've encountered the word motley, it's most likely in the phrase motley crew, which means a diverse and poorly organized group. Think of a band of pirates, or the assorted characters who became The Fellowship of the Ring. In contemporary usage, motley can be used in virtually any context as a synonym for mismatched, heterogeneous, or ragtag. But the word was first used to describe multicolored fabric, especially the type of material used in a jester's costume.