EKG paper is divided into small squares. Each is 1 mm in height and width and represents a time interval of:
A. 0.04 seconds.
B. 0.08 seconds.
C. 0.12 seconds.
D. 0.20 seconds.
Answer: A
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The normal inherent rate of the sinus node as a pacemaker is
A) 40—60 beats per minute. B) 20—40 beats per minute. C) 60—80 beats per minute. D) 60—100 beats per minute.
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If a child weighs 18 kg, and the adult dose is 75 mg, how many milligrams should the child receive?
16.5 17.3 19.8 22.4
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Special preparations administered to produce immunity are _______________.
Fill in the blank(s) with the appropriate word(s).
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A prolonged PR interval:
A) is greater than 120 milliseconds. B) indicates that the AV node was bypassed. C) indicates an abnormal delay at the AV node. D) is a sign of rapid atrial depolarization.
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