A 57-year-old patient presents with bright red mucosa under her 10-year-old maxillary denture. The tissue is painful and has been present for several weeks. The remainder of her examination is negative. This is most likely which of the following?

Which of the following statements regarding patient transport is correct?

A) Because of the location of most technical rescue scenes, a helicopter should routinely be dispatched to transport the patient. B) Air transport would be appropriate if the patient is critical or if the scene is far removed from the closest appropriate hospital. C) In rough-terrain rescues, the use of a long backboard is most practical and appropriate for moving a patient to the awaiting ambulance. D) Unless an injured patient has fractures to the lower extremities, it is acceptable to allow him or her to walk from the rescue scene to the ambulance.

The ability of alcohols to act as an effective disinfectant decreases significantly when their con-centration drops below:

a. 30%. c. 70%. b. 50%. d. 90%.