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.
Neurally mediated syncope (NMS) is called also neurocardiogenic, vasovagal, vasodepressor or reflex mediated syncope. It's a benign (and the most frequent) cause of fainting. However, life-threatening conditions may also manifest as syncope. NMS is more common in children and young adults, although it can occur at any age. NMS happens because blood pressure drops, reducing circulation to the brain and causing loss of consciousness.