A client with hypertension and benign prostate hyperplasia is prescribed doxazosin (Cardura). Which of the following statements below would the nurse emphasize regarding doxazosin (Cardura)?
"Increase your potassium intake by eating more bananas and apricots."
"Weigh yourself daily, and report any weight loss to your prescriber."
"The impaired taste associated with this medication usually goes away in 2 to 3 weeks."
"Be sure to lie down after taking the first dose, because first-dose hypotension may make you dizzy."
The Correct Answer is D
A) "Increase your potassium intake by eating more bananas and apricots.": Doxazosin is not a potassium-sparing medication, and there is no specific indication for increased potassium intake with this drug. This advice may be misleading, especially since excessive
potassium can pose risks, particularly in certain populations.
B) "Weigh yourself daily, and report any weight loss to your prescriber.": Daily weighing can be important for monitoring fluid retention in some conditions, but weight loss is not a common side effect of doxazosin. Instead, clients should be more concerned about weight gain due to fluid retention or potential side effects from the medication.
C) "The impaired taste associated with this medication usually goes away in 2 to 3 weeks.": Impaired taste is not a well-documented side effect of doxazosin. While some medications may cause changes in taste, this statement is not relevant for doxazosin and does not address the most critical aspects of its administration.
D) "Be sure to lie down after taking the first dose, because first-dose hypotension may make you dizzy.": This statement is accurate and important. Doxazosin can cause first-dose hypotension, leading to dizziness or fainting. Advising the client to lie down after the first dose helps mitigate the risk of hypotensive effects, making this the most appropriate emphasis for the nurse.
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Correct Answer is D
Explanation
A) Atenolol: This is a beta-blocker that can be used for various cardiac conditions, including hypertension and certain arrhythmias, but it is not typically the first-line treatment for acute life-threatening ventricular dysrhythmias in the emergency setting.
B) Lisinopril: This medication is an ACE inhibitor primarily used to manage hypertension and heart failure. It does not address acute ventricular dysrhythmias and would not be appropriate for immediate use in this scenario.
C) Adenosine: While adenosine is effective for certain types of supraventricular tachycardia, it is not indicated for life-threatening ventricular dysrhythmias. It has a very short duration of action and is not the drug of choice in this context.
D) Procainamide: This antiarrhythmic medication is specifically used to treat life-threatening ventricular dysrhythmias. It works by stabilizing the cardiac membrane and is indicated in emergency situations to manage these types of arrhythmias. Therefore, preparing procainamide is the most appropriate action for the nurse in this scenario.
Correct Answer is A
Explanation
A) Hypokalemia: Hypokalemia, or low potassium levels, significantly increases the risk of digoxin toxicity. Since digoxin competes with potassium for binding at the sodium-potassium ATPase site in the heart, low potassium levels can lead to increased digoxin effects and toxicity. Therefore, it is crucial to monitor potassium levels and correct any deficiencies before administering digoxin.
B) Hyperkalemia: While hyperkalemia is a serious concern and can also affect digoxin therapy, it usually results in decreased effectiveness of digoxin rather than increasing toxicity. Elevated potassium levels can diminish the drug's positive inotropic effect.
C) Hypocalcemia: Although calcium levels can influence cardiac function, hypocalcemia is not directly related to digoxin toxicity. Monitoring calcium is important for overall cardiac health, but it is not the primary focus when assessing the risk for digoxin toxicity.
D) Hypernatremia: Elevated sodium levels do not have a direct impact on the efficacy or toxicity of digoxin. While sodium levels are essential to monitor for overall health, they are not critical in the context of digoxin administration and toxicity risk.