Which one of the following statements about the toxicity of local anesthetics is most correct?

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Question 1 of 5

Which one of the following statements about the toxicity of local anesthetics is most correct?

A. Serious cardiovascular reactions are more likely to occur with tetracaine than with bupivacaine B. Cyanosis may occur following injection of large doses of lidocaine, especially in patients with pulmonary disease C. Intravenous injection of local anesthetics may stimulate ectopic cardiac pacemaker activity D. In overdosage, hyperventilation (with oxygen) is helpful to correct acidosis and lower extracellular potassium

Correct Answer: D

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

Question 2 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 3 of 5

Which one of the following drugs is most likely to be of value in obsessive-compulsive disorders (OCD)?

A. Amitriptyline B. Bupropion C. Clomipramine D. Desipramine

Correct Answer: C

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

Question 4 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 5 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.

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