____, mechanical devices that deliver a specified volume of respiratory gas, have been used in the prehospital environment in Europe since the late 1970s.

Transnasal endoscopy procedures are:

A) performed using a rigid or flexible endoscope. B) used for tissue collection, surgery and cauterization. C) used only for screening and diagnostic purposes. D) access the upper GI through the oral cavity.

What drug, described as a modified form of methamphetamine, is often seen in nightclubs?

A) Barbiturates B) Ecstasy C) Alcohol D) Marijuana