When the primary-beam field size ____, the patient exposure ____.
a. increases; decreases
b. decreases; decreases
c. decreases; increases
d. increases; increases
b. decreases; decreases
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Medications instilled directly into the auditory canal to treat ear problems include all of the following, EXCEPT:
A) antibacterial agents. B) topical anesthetics. C) anticholinergic agents. D) ceruminolytic agents.
A 31-year-old man presents for a routine dental examination. Soft tissue examination shows that both sides of his tongue have several circular red nonulcerated lesions of approximately 1 cm in diameter. The red patches are surrounded by white hyperkeratotic margins. He is asymptomatic and is otherwise in good health. He most likely has:
a. Bilateral squamous cell carcinomas b. Hairy leukoplakia c. Median rhomboid glossitis d. Leukoedema e. Geographic tongue
All of the following are advantages of the parenteral route except:
A) Drugs are not altered by gastric acids. B) It is an effective route when the patient refuses to take oral medications. C) It is an effective route when medications cannot be taken orally. D) It allows medications to be delivered to a targeted area of the body.
A pulse oximeter is used to determine ________.
A. blood pressure B. temperature C. oxygen saturation D. heart rate