Pacemakers function by providing an electrical stimulus when
A) the heart's own stimulus is too fast to provide adequate cardiac output.
B) the heart is unable to generate its own stimulus.
C) the heart is experiencing periods of low exertion.
D) the heart is no longer capable of beating.
B
Health Professions
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Which statement BEST describes portable fire extinguisher selection?
A. Extinguisher ratings do not impact selection. B. The correct extinguisher will minimize risk to life and property. C. The correct extinguisher will always require an expert operator. D. All types of extinguishers can be selected regardless of the situation.
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Which item on the diagram of the cycle of infection is the method by which a pathogen spreads to another host?
A. D B. A C. C D. B E. E
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