A patient has a blood serum drug level of 50 units/mL. The drug's half-life is 1 hour. If concentrations above 25 units/mL are toxic and no more of the drug is given, how long will it take for the blood level to reach the nontoxic range?
A) 30 minutes
B) 1 hour
C) 2 hours
D) 3 hours
B
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The nurse is teaching burn prevention to a community group. Which information shared by a member of the group causes the nurse the greatest concern?
a. "I get my chimneys swept every other year." b. "My hot water heater is set at about 120 degrees." c. "Sometimes I wake up at night and smoke." d. "I use a space heater when it gets below zero."
A 30-year-old woman is being treated for polycythemia vera and she wants to know about the properties of blood. The nurse identifies which properties of blood that differentiate it from other connective tissues?
A) Cells are heavier and more viscous than water. B) Despite being a liquid, it possesses an adhesive quality. C) Cells are not fixed, but move freely in the liquid portion. D) Although the composition is the same, the protein content is lower.
What nutritional complications could it have?
A patient develops alopecia related to doxorubicin (Adriamycin) therapy. Which statement explains this side effect?
a. Antibiotics stop all hair growth. b. Bone marrow suppression prevents nourishment of hair follicles. c. Uric acid collects in hair cells. d. Antineoplastics such as Adriamycin attack all rapidly dividing cells.