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HESI LPN · HESI LPN Pharmacology · HESI Cardiovascular Drug Interactions PDF

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

The objective information that has helped mental health professionals understand that schizophrenia has a biological component has been obtained primarily from which of the following?

A. Genetic studies

B. Patient histories

C. Comparisons of blood chemistries

D. Magnetic resonance imaging (MRI) studies

Expert Explanatory Rationale

Correct Answer: Magnetic resonance imaging (MRI) studies

Question 2 of 5

The client is taking a medication that digests the fibrin network in a blood clot. What medication is the client likely taking?

A. Heparin

B. Streptokinase

C. Warfarin

D. Ticlid

Expert Explanatory Rationale

Correct Answer: Streptokinase

Question 3 of 5

The following statements concerning mechanism of calcium channel blockersÃ¢â‚¬â„¢ action are true, EXCEPT:

A. Therapeutically active agents in this group are capable of releasing nitric oxide (NO) in vascular smooth muscle target tissues

B. Calcium channel blockers bind to L-type calcium channel sites

C. Calcium channel blockers useful in angina decrease myocardial oxygen requirement (by decreasing the determinations of oxygen demand) and increase myocardial oxygen delivery (by reversing coronary arterial spasm)

D. Calcium channel blockers decrease transmembrane calcium current associated in smooth muscle with long-lasting relaxation and in a cardiac muscle with a reduction in contractility

Expert Explanatory Rationale

Correct Answer: Therapeutically active agents in this group are capable of releasing nitric oxide (NO) in vascular smooth muscle target tissues

Question 4 of 5

The main reason for giving levodopa the precursor of dopamine instead of dopamine is:

A. Dopamine does not cross the blood-brain barrier

B. Dopamine may induce acute psychotic reactions

C. Dopamine is intensively metabolized in humans

D. All of the above

Expert Explanatory Rationale

Correct Answer: Dopamine does not cross the blood-brain barrier

Question 5 of 5

Digoxin differs from digitoxin in that digoxin

A. Has a longer half life

B. Is completely absorbed from the Gl tract

C. Is bound extensively to plasma proteins

D. Its half-life is more dependent on the adequacy of renal function

Expert Explanatory Rationale

Correct Answer: Its half-life is more dependent on the adequacy of renal function

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