Polystyrene (PS) /ËpÉliËstaÉªriËn/ is a synthetic aromatic polymer made from the monomer styrene. Polystyrene can be solid or foamed. General purpose polystyrene is clear, hard, and rather brittle. It is an inexpensive resin per unit weight.
It is. more prevalent in females than males (1,2). The most common. cause of syncope in young subjects is a reflex syncopal event. that includes stretch syncope (1-3). Stretch syncope is a rare. occurrence that is clinically difficult to distinguish from epilepsy. and may arise while stretching the neck hyperextended in the.
Neurological conditions turn out to an infrequent cause of syncope, accounting for only about 1% of syncopal episodes. 1  There are only three neurological conditions that are likely to produce syncope: 2  Transient ischemic attacks (TIAs), usually involving the vertebrobasilar arteries.