A client asks a nurse, "How does ergotamine (Ergostat) relieve migraine headaches?" The nurse should respond that it:
A) dilates cerebral blood vessels.
B) constricts cerebral blood vessels.
C) decreases peripheral vascular resistance.
D) decreases the stimulation of baroreceptors.
Ans: B
Ergotamine relieves migraine headaches by constricting, not dilating, cerebral arterial vessels. The drug's ability to prevent norepinephrine reuptake may add to this effect. The net result is decreased pulsatile blood flow through the cerebral vessels and symptom relief. Ergotamine doesn't decrease peripheral vascular resistance or stimulation of baroreceptors.
You might also like to view...
A client's belief that the existence of God cannot be proved or disproved is BEST described as:
a. agnosticism c. Darwinism b. atheism d. existentialism
A nurse on rounds observes that a client has been eating food rather hastily. Based on this information the nurse knows that what structure of the respiratory system prevents foreign matter from entering the lower respiratory system?
A) Trachea B) Esophagus C) Epiglottis D) Pharynx
Of the doses on hand, you would choose ________ to administer the ordered doseOrdered: Coumadin 7.5 mg PO daily
A. Coumadin injection 5 mg/vial B. Coumadin 1 mg scored tablets C. Coumadin 10 mg scored tablets D. Coumadin 5 mg scored tablets
A patient is experiencing mucositis as a result of radiation therapy. Which interventions should the nurse include in the plan of care? (Select all that apply.)
a. Provide oral care once daily. b. Discourage use of alcohol and tobacco. c. Encourage citrus juice for vitamin C supplementation. d. Advise the patient to avoid very cold foods and drinks. e. Heat all liquids before drinking to promote oral blood flow. f. Advise the patient to use a neutral mouthwash, such as diphenhydramine (Benadryl), and water.