Concerning hypotheses for the pathophysiologic basis of schizophrenia, which one of the following statements is accurate?

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Central Nervous System Stimulants and Related Drugs NCLEX Questions Quizlet Questions

Question 1 of 5

Concerning hypotheses for the pathophysiologic basis of schizophrenia, which one of the following statements is accurate?

A. Positron emission tomography has shown decreased dopamine receptors in the brains of both untreated and drug-treated schizophrenics B. Drugs that block dopamine receptors are useful for alleviating psychotic symptoms in parkinsonian patients C. The clinical potency of many antipsychotic drugs correlates well with their beta adrenoceptor-blocking actions D. All effective antipsychotic drugs have high affinity for dopamine D2 receptors

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 2 of 5

The patient is started on gemfibrozil. The major mechanism of action of gemfibrozil is

A. Increased excretion of bile acid salts B. Increased expression of high-affinity LDL receptors C. Increased lipid hydrolysis by lipoprotein lipase D. Inhibition of secretion of VLDL by the liver

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 3 of 5

Diuretics that increase the delivery of poorly absorbed solute to the thick ascending limb of the nephron include

A. Furosemide B. Indapamide C. Mannitol D. All of the above

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 4 of 5

Which one of the following agents used in hypertension is a prodrug that is converted to its active form in the brain?

A. Clonidine B. Doxazosin C. Methyldopa D. Nitroprusside

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 5 of 5

Regarding the pharmacodynamic actions of local anesthetics, which one of the following statements is most accurate?

A. All local anesthetics with ester bonds are vasodilators B. Amides cause a high incidence of hypersensitivity reactions C. Protonated forms of such drugs readily penetrate bio-membranes D. The ionized forms of local anesthetics cause a use-dependent blockade of sodium ion channels

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

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