Cosmic radiation occurs in which two forms?

a. Solar and manmade
b. Artificial and galactic
c. Natural background and artificial
d. Solar and galactic

d. Solar and galactic

Health Professions

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A rhythm originating in the sinus node should NOT have which of the following?

A) Heart rate of 60—100 B) Regularly spaced QRS complexes C) Narrow QRS complexes of uniform shape D) Absent QRS complexes

Health Professions

The most common cause of an unexplained pause is a(n)

A) atrial tachycardia. B) nonconducted PAC. C) sinus arrest. D) sinus block.

Health Professions