Multifocal atrial tachycardia is an irregular rhythm with a heart rate greater than 100

If you are caught in cold water and there are no personnel available to rescue you, you should:

A) swim vigorously to the shore, as this action will increase the metabolic rate and produce heat. B) keep your face above water, protect your head, and assume a position that minimizes body heat loss. C) tread water, as this action will decrease heat loss 60% more effectively than any other position or action. D) allow yourself to become moderately hypothermic, as hypothermia will decrease your body's demand for oxygen.

Due to anatomy a premolar bitewing radiograph will almost always exhibit overlap between the:

a. distal of the lateral incisor and the mesial of the canine. b. distal of the canine and the mesial of the first premolar. c. distal of the first premolar and mesial of the second premolar. d. distal of the second premolar and mesial of the first molar.