What is the major reason that monoamine oxidase inhibitors (MAOIs) are rarely used in clinical practice today?
They are under a scheduled drug classification.
They are ineffective in treating depression or anxiety disorders.
They can cause gastrointestinal (GI) bleeding and esophageal varices.
They may cause dangerous interactions with some foods and drugs.
The Correct Answer is D
A. While MAOIs may have some regulatory considerations, they are not classified under a scheduled drug classification like controlled substances.
B. MAOIs are effective in treating depression and anxiety disorders, which is not the reason for their limited use.
C. Although MAOIs can have some side effects, they are more notably associated with dietary and drug interactions rather than causing GI bleeding or esophageal varices.
D. MAOIs can cause dangerous interactions with foods that contain tyramine (like aged cheeses and fermented products) and certain medications, leading to hypertensive crises, making their use cautious and limiting in clinical practice.
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Correct Answer is D
Explanation
A. By directly relaxing vascular smooth muscle is not how lisinopril primarily works; it does not act directly on smooth muscle but rather affects hormonal pathways.
B. By blocking aldosterone from binding to mineralocorticoid receptors is a secondary effect of the angiotensin-converting enzyme (ACE) inhibitors but not the primary action of lisinopril itself.
C. By blocking the movement of calcium ions into arterial smooth muscles describes the action of calcium channel blockers, not ACE inhibitors like lisinopril.
D. By inhibiting the transformation of angiotensin I to angiotensin II is the correct answer because lisinopril inhibits the ACE enzyme, reducing the production of angiotensin II, which lowers blood pressure and decreases strain on the heart.
Correct Answer is A
Explanation
A. Wearing protective equipment such as gloves, mask, and gown is essential when preparing cytotoxic drugs to protect the nurse from potential exposure to harmful substances.
B. While washing hands is important for general hygiene, it does not specifically protect against cytotoxic drug exposure.
C. Mixing medication in a 1-L bag does not offer specific protection to the nurse and is not a standard measure for safety.
D. Administering medication intramuscularly (IM) is a route of administration and does not relate to protection measures while preparing cytotoxic drugs.