Which of the following is NOT true about VOO pacemakers?
A) They are fixed-rate pacemakers.
B) They are demand pacemakers.
C) They can cause fibrillation if the paced beat lands on the vulnerable period of the intrinsic beat's cardiac cycle.
D) They fire at their preset rate regardless of intrinsic beats.
B
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Which of the following is the only artery that carries deoxygenated blood away from the heart?
A) Aorta B) Pulmonary C) Semilunar D) Coronary
What is the main advantage of group insurance?
a. More people can obtain insurance from a single insurer b. Risk is spread out among a large number of insured c. More comprehensive services can be covered than under an individual plan d. The employer has to deal with only one insurance company
The drug of choice for the treatment of fungal lung diseases is:
a. penicillin (penicillin G). b. tetracycline. c. amphotericin B (Fungizone). d. ketoconazole (Nizoral).
One of the MOST significant characteristics of concern to members of the fire service is steel's"
A. brittleness when exposed to heat B. inherent tendency to fail suddenly C. tendency to melt during intense fire conditions D. deterioration of strength at elevated emperatures