A nurse is caring for a client who has a prescription for hydrochlorothiazide for the initial treatment of hypertension. Which of the following should the nurse recognize as the action of this medication?
Hydrochlorothiazide prevents angiotensin II from binding with receptor sites.
Hydrochlorothiazide decreases the reabsorption of sodium and water in the distal renal tubule.
Hydrochlorothiazide blocks stimulation of beta receptors in the sympathetic nervous system.
Hydrochlorothiazide promotes the movement of extravascular fluids into the vascular compartment.
The Correct Answer is B
Rationale:
A. Hydrochlorothiazide does not prevent angiotensin II from binding with receptor sites; this action is typically associated with ACE inhibitors or angiotensin receptor blockers.
B. Hydrochlorothiazide decreases the reabsorption of sodium and water in the distal renal tubule, which leads to increased urine output and decreased blood volume, effectively lowering blood pressure.
C. Hydrochlorothiazide does not block beta receptors; this is the mechanism of action for beta-blockers.
D. Hydrochlorothiazide does not promote the movement of extravascular fluids into the vascular compartment; instead, it reduces blood volume by promoting diuresis.
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Correct Answer is C
Explanation
Rationale:
A. Applying a warming blanket is not appropriate, as it may exacerbate the client's reaction to the infusion and is not a standard pre-medication strategy.
B. Infusing amphotericin B deoxycholate over 1 hour is too rapid; it is typically infused over 2-6 hours to minimize adverse effects.
C. Administering diphenhydramine prior to the administration of amphotericin B can help prevent or alleviate infusion-related reactions such as fever and chills, which the client experienced during previous infusions.
D. Monitoring vital signs once per hour following administration is insufficient; vital signs should be monitored more frequently during and immediately after the infusion to promptly detect and address any adverse reactions.
Correct Answer is D
Explanation
Rationale:
A. This statement is incorrect because the client should remove contact lenses before administering brimonidine and wait at least 15 minutes before reinserting them to ensure proper absorption and avoid irritation.
B. While some mild irritation can occur, it is not a desired effect and should not be expected; the nurse should clarify what level of irritation is considered normal.
C. This statement is incorrect as brimonidine is typically a long-term treatment for glaucoma, and clients should not stop using it without consulting their provider.
D. This statement is correct; brimonidine can cause changes in eye color, particularly in individuals with lighter colored eyes, and the client should be informed about this possibility.