On barium enema, colon cancer may appear as an apple core (a constricting lesion) or a mass with a filling defect. What is a filling defect?
What will be an ideal response?
An anatomical change that prevents contrast material from filling (flowing into and outlining) an anatomical space.
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A 77-year-old male has been experiencing dizziness and weakness when he attempts to stand quickly. Causes that should be considered include:
a. beta-blocker use. b. use of vasodilators for treatment of hypertension. c. hypovolemia secondary to diuretic use or depressed thirst mechanisms. d. all of the above.
Agents causing stimulation of the parasympathetic nervous system are
a. cholinergic. b. anticholinergic. c. adrenergic. d. parasympathomimetic.
The number of lead lines per inch or centimeter is:
grid linearity grid frequency grid ratio grid efficiency
The fact that a patient has taken an over-the-counter medication and received relief of his pain is known as what in relation to the subjective documentation found in this patient's chart?
Fill in the blank(s) with the appropriate word(s).