A Patient with a Hypertensive Emergency Is Given an Intravenous

question 5

Multiple Choice

A patient with a hypertensive emergency is given an intravenous infusion of a drug that dilates renal afferent and efferent arterioles and is rapidly metabolized with a half-life of 5 minutes.Which mechanism is responsible for the therapeutic effect of this drug?

• A) activation of dopamine D₁ receptors
• B) activation of dopamine D₂ receptors
• C) blockade of α₁-adrenoceptors
• D) activation of α₂-adrenoceptors
• E) blockade of α₁- and β₁-adrenoceptors

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Definitions:

Cerebellum

A region of the brain that plays a significant role in motor control, coordination, and balance.

Coughing

A rapid expulsion of air from the lungs typically to clear the lung airways of fluids, mucus, or material that causes obstruction or irritation.

Swallowing

The process of making food or liquid move from the mouth through the throat and into the esophagus; it's a crucial part of digestion.

Vomiting

The forceful expulsion of stomach contents through the mouth, a reflex act triggered by various conditions.