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.
Top definition. mooch. A scab or freeloader who comes to your house uninvited and overstays his welcome (For more than about 3 days) and proceeds to eat all your food, stink up your bathroom, take all your drugs and just generally leech all the blood from your body during their stay. The Urban Dictionary Mug. One side has the word, one side has the definition.