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.
With fainting (syncope), the patient is unaware that they have passed out and fallen to the ground. It is only afterward that they understand what has happened. There may be symptoms or signs before the syncopal episode, which may include: The person may feel lightheaded, nauseated, sweaty, or weak.