As bordering tissue starts to become affected during a stroke, increasing areas of hypoperfusion lead to a series of ring-like zones of damage in a process called ____.
A. thrombotic diaschisis
B. homonymous hemianopia
C. ischemic penumbra
D. hemorrhagic aphasia
Answer: C
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A patient with chronic constipation should:
A) Continue to use laxatives until the problem is resolved. B) Discontinue laxatives and consult a physician. C) Increase use of stool-softening laxatives in case of diverticulitis. D) Cut back on water, exercise, and prescription medications.
What is the mechanism behind nitric oxide (INOmax)?
a. It dilates pulmonary arterial vascular beds and affects platelet aggregation. b. It inhibits the degranulation of mast cells. c. It inhibits the 5-lipoxygenase enzyme that catalyzes the formation of leukotrienes from arachidonic acid. d. It relaxes vascular smooth muscle by binding to the heme group of cystolic guanylate, activating guanylate cyclase, increasing cyclic GMP.
______________________________ are chemicals that enable messages to pass from one cell to another.
Fill in the blank(s) with the appropriate word(s).
After receiving an epinephrine-containing anesthetic, the patient complains that his heart rate has increased and he feels anxious. The best course of action is to _________
tell the patient this is normal and it will pass. call 911. place the patient in the subsupine position and monitor breathing. administer oxygen.