Pharmacology XIV

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Praxis Tests: Pharmacology Quiz on Pharmacology XIV, created by ACAPUN INSTITUTE on 08/11/2021.
ACAPUN INSTITUTE
Quiz by ACAPUN INSTITUTE, updated more than 1 year ago
ACAPUN INSTITUTE
Created by ACAPUN INSTITUTE about 3 years ago
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Resource summary

Question 1

Question
The therapeutic effect of the salicylates is explained on the basis of the ability of the drug to
Answer
  • A) Activate autonomic reflexes
  • B) Uncouple oxidative phosphorylation
  • C) Inhibit the synthesis of prostaglandins
  • D) Competitively antagonize prostaglandins at the receptor site

Question 2

Question
The mechanism of the antipyretic action of salicylates probably results from
Answer
  • A) Inhibition of prostaglandin synthesis in the CNS affecting hypothalamic temperature regulation
  • B) Inhibition of bradykinin in the periphery leading to sweating
  • C) Depression of oxidative enzymes leading to decreased heat production
  • D) Suppression of cholinergic mediators in the hypothalamus
  • E) Stimulation of norepinephrine in the hypothalamus

Question 3

Question
The antipyretic action of salicylates is explained in part by
Answer
  • A) Analgesia leading to sedation
  • B) Increased blood flow through the hypothalamus
  • C) Cutaneous vasodilation leading to increased heat loss
  • D) Depression of oxidative processes leading to decreased heat production

Question 4

Question
The locus of action of aspirin’s central antipyretic effect is the
Answer
  • a. Brain stem
  • b. Hypothalamus
  • c. Basal ganglia
  • d. Limbic system
  • e. Cerebral cortex

Question 5

Question
A patient who has been taking large quantities of aspirin might show increased postoperative bleeding because aspirin inhibits
Answer
  • a. Synthesis of thromboxane A2 and prevents platelet aggregation
  • b. Synthesis of prostacyclin and prevents platelet aggregation
  • c. Synthesis of prostaglandin and prevents production of blood platelets
  • d. Thrombin and prevents formation of the fibrin network
  • e. G.I. absorption of vitamin K and prevents synthesis of blood clotting factors

Question 6

Question
Anti-inflammatory agents, such as aspirin, interfere with hemostasis by
Answer
  • a. Activating antithrombin
  • b. Preventing vasoconstriction
  • c. Inhibiting thrombin generation
  • d. Inhibiting platelet aggregation
  • e. Inhibiting polymerization of fibrin

Question 7

Question
Which of the following anti-inflammatory agents does NOT act primarily by inhibiting activity of prostaglandin synthetase?
Answer
  • a. Diflunisal
  • b. Ibuprofen
  • c. Triamcinolone
  • d. Oxyphenbutazone
  • e. Acetylsalicylic acid

Question 8

Question
A nonsteroidal, anti-inflammatory agent that appears to produce fewer gastrointestinal disturbances than high does of aspirin is
Answer
  • a. Ibuprofen
  • b. Probenecid
  • c. Pentazocine
  • d. Acetaminophen
  • e. Phenylbutazone

Question 9

Question
Prolonged use of which of the following drugs does NOT cause a predisposition to gastric irritation and bleeding?
Answer
  • a. Phenytoin
  • b. Ibuprofen
  • c. Indomethacin
  • d. Phenylbutazone
  • e. Acetylsalicylic acid

Question 10

Question
Each of the following agents has been associated with gastric irritation EXCEPT
Answer
  • a. Aspirin
  • b. Alcohol
  • c. Ibuprofen
  • d. Indomethacin
  • e. Acetaminophen

Question 11

Question
Which of the following is NOT produced by excessive doses of acetylsalicylic acid?
Answer
  • a. Delirium
  • b. Tinnitus
  • c. Hypothermia
  • d. Hyperventilation
  • e. Metabolic acidosis

Question 12

Question
All of the following are pharmacologic and toxicologic properties of aspirin EXCEPT
Answer
  • a. Tinnitus
  • b. Analgesia
  • c. Salicylism
  • d. Antipyresis
  • e. Suppression of the immune response

Question 13

Question
Therapeutic effects of aspirin include a. Analgesia b. Tranquilization c. Pyretic action d. Anti-inflammatory action e. Antirheumatic action
Answer
  • A) (a), (b) and (c)
  • B) (a), (c) and (d)
  • C) (a), (d) and (e)
  • D) (b), (c) and (d)
  • E) (b), (d) and (e)

Question 14

Question
All of the following are pharmacologic or toxicologic properties of acetylsalicylic acid EXCEPT
Answer
  • a. Tinnitus
  • b. Analgesia
  • c. Antipyresis
  • d. Methemoglobinemia
  • e. Inhibition of prostaglandin synthesis

Question 15

Question
All of the following are possible effects of aspirin EXCEPT
Answer
  • a. Reduction of fever
  • b. Shortening of bleeding time
  • c. Suppression of inflammatory response
  • d. Bleeding from the gastronintestinal tract
  • e. Increase in the renal excretion of uric acid at high doses

Question 16

Question
Of the following, aspirin does NOT cause
Answer
  • a. Occult bleeding
  • b. Nausea and vomiting
  • c. Acid-base disturbance
  • d. Suppression of the cough reflex
  • e. Decreased tubular reabsorption of uric acid

Question 17

Question
Which of the following is NOT true regarding acetaminophen?
Answer
  • a. It has antipyretic properties
  • b. It may induce methemoglobinemia
  • c. It can be combined with codeine
  • d. It has anti-inflammatory properties
  • e. It is not cross-allergenic with aspirin

Question 18

Question
The most prominent acute toxic effect associated with acetaminophen use is
Answer
  • a. Hemorrhage
  • b. Renal necrosis
  • c. Hepatic necrosis
  • d. Gastric ulceration
  • e. Respiratory alkalosis

Question 19

Question
Which of the following anti-inflammatory agents does NOT act primarily by inhibiting the activity of cyclooxygenase?
Answer
  • a. Ibuprofen
  • b. Diflunisal
  • c. Prednisone
  • d. Indomethacin
  • e. Phenylbutazone

Question 20

Question
Which of the following is the most appropriate drug to use to lower fever in a child under 12?
Answer
  • a. Aspirin
  • b. Ibuprofen
  • c. Acetaminophen
  • d. Salicylate
  • e. Diflunisal

Question 21

Question
Which analgesic from the following list has the longest half-life?
Answer
  • a. Acetaminophen
  • b. Aspirin
  • c. Diflunisal (Dolobid)
  • d. Ibuprofen
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