The pacemaker that fires at 20 to 40 beats per minute is the:
A) Purkinje's network
B) Bundle of His
C) AV node
D) SA node
A
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The fifth dose of diphtheria vaccine is given to children between the ages of ________
a. 2 and 4 b. 4 and 6 c. 6 and 8 d. 8 and 10
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The systemic spread of toxins through the bloodstream is called:
a. infection. c. pathogenia. b. septicemia. d. toxemia.
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On an ECG, the QRS represents:
A) Contraction of the atria B) Contraction of the ventricles C) Contraction of both the atria and the ventricles D) The heart at rest following contraction
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Which is a review for medical necessity of tests and procedures ordered during an inpatient hospitalization?
a. concurrent review b. discharge planning c. preadmission certification d. preauthorization
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