Which of the following are causes of leukopenia? 1. Chemotherapy 2. Bone marrow disease 3. Radiation therapy 4. Antibiotics
a. 1 and 4 only
b. 1, 2, and 3 only
c. 2 and 3 only
d. 1, 2, and 4 only
ANS: B
Diseases of the bone marrow (e.g., leukemia, lymphoma) and chemotherapy and radiation thera-py for cancer are common causes of leukopenia.
Health Professions
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Consider the following measurement. 0.00153 ? Is the number above the arrow a significant digit?
A) No, because it is an embedded zero. B) No, because it is a leading zero C) Yes, because it is a precise zero. D) Yes, because it is a trailing zero.
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Atracurium and cisatracurium are eliminated by
a. the kidneys in urine. b. hepatic metabolism. c. excretion in bile. d. Hofmann degradation.
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