A nurse is teaching a group of nurses about the administration of nitroglycerin. Which of the following routes of administration has the most rapid onset for the client?
Topical ointment
Sublingual
Transdermal patch
Sustained-release
The Correct Answer is B
A. Topical ointment has a slower onset as it must be absorbed through the skin before it can exert its effects.
B. Sublingual nitroglycerin provides rapid relief of angina symptoms because it is absorbed quickly into the bloodstream through the mucous membranes in the mouth, allowing for an immediate effect.
C. Transdermal patches release nitroglycerin slowly over time, leading to a delayed onset of action.
D. Sustained-release formulations are designed for prolonged effects rather than rapid onset, making them slower to take effect compared to sublingual administration.
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Correct Answer is A
Explanation
A. Bisacodyl is a stimulant laxative that can lead to dependency if used daily, as the body may become reliant on the medication for bowel movements. Chronic use can also result in electrolyte imbalances and diminished bowel function.
B. Psyllium is a bulk-forming laxative that works by increasing the bulk of stool and does not typically lead to dependency.
C. Polyethylene glycol is an osmotic laxative that can be used daily without a significant risk of dependency, as it draws water into the bowel to facilitate stool passage.
D. Docusate sodium is a stool softener that aids in preventing constipation but does not carry a risk of dependency when used regularly.
Correct Answer is C
Explanation
A. Hydrochlorothiazide is a thiazide diuretic that can be used for hypertension and edema but is not specifically indicated for open-angle glaucoma.
B. Furosemide is a loop diuretic used primarily for fluid overload conditions and does not have a specific role in the treatment of open-angle glaucoma.
C. Acetazolamide is a carbonic anhydrase inhibitor that reduces aqueous humor production and is specifically used to lower intraocular pressure in clients with open-angle glaucoma.
D. Spironolactone is a potassium-sparing diuretic used mainly for conditions like heart failure and hypertension, and it is not indicated for the treatment of open-angle glaucoma.