Xanthine derivatives are bronchodilators with which actions in the body? (Select all that apply.)
a. Smooth-muscle relaxation
b. Kidney diuresis
c. Stimulation of the myocardium
d. Decrease in respiratory rate
e. Decrease in heart rate
ANS: A, B, C
The main actions of xanthine-derivative bronchodilators are to relax the smooth-muscle cells in the bronchi, directly produce diuresis of the kidneys, and stimulate the myocardium.
You might also like to view...
A 32-year-old female patient is taking tizanidine (Zanaflex) for spasticity related to her multiple sclerosis. The nurse will inform the patient and her husband that the adverse effect that poses the greatest safety risk to the patient is
A) constipation. B) dry mouth. C) fatigue. D) hypotension.
A 14-year old patient with cancer is concerned about diet, and questions the need for vitamins to supplement the diet. The patient states, "I don't think my diet alone is providing the upper intake levels (ULs) of vitamins that I need
" What is the best response from the nurse? a. "You should try to get your vitamins from food, rather than a supplement." b. "You should be trying to achieve the recommended dietary allowances (RDA)." c. "You should compare your diet to the UL for children, not the UL for adults." d. "You shouldn't worry about vitamins as long as you are getting enough calories."
Which of the following assessments should the nurse observe in a client with a cataract?
A) A burning sensation and the sensation of an object in the eye B) Blurred or cloudy visual image C) Inability to produce sufficient tears D) A swollen lacrimal caruncle
When assessing a surgical wound healing by tertiary intention, the nurse expects granulation tissue to begin to appear during which time period?
A) 1-3 days after surgery B) 3-5 days after surgery C) A week after surgery D) Two weeks after surgery