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.
jelly_beans: What are the causes of syncope and how common is it? Dr__Manikum_Moodley: Syncope has numerous causes; but in children, the most common cause is a simple faint, which is also called 'vasovagal syncope,' 'vasodepressive syncope,' or 'neurocardiogenic syncope.' Other causes of syncope include: cardiovascular mediated syncope, situational syncope, drug-induced syncope, reflex syncope (similar to vasovagal syncope), psychogenic syncope and â rarely -- syncope due to metabolic disorders.