The nurse is preparing to administer digoxin (Lanoxin) to a client experiencing atrial fibrillation. Which of the following electrolyte imbalances would the nurse assess to reduce the incidence of toxicity with digoxin (Lanoxin)?
hypocalcemia
hypokalemia
hyperkalemia
hypernatremia
The Correct Answer is B
A. Hypocalcemia is not directly linked to digoxin toxicity; rather, it is more associated with calcium channel blockers.
B. Hypokalemia increases the risk of digoxin toxicity, as low potassium levels can enhance the effects of digoxin on the heart.
C. Hyperkalemia is not directly associated with toxicity; however, it can cause complications in patients taking digoxin.
D. Hypernatremia does not have a direct impact on digoxin toxicity; monitoring potassium levels is more critical.
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Correct Answer is A
Explanation
A. Argatroban is specifically indicated for patients with heparin-induced thrombocytopenia (HIT), as it is a direct thrombin inhibitor that does not cause further platelet depletion.
B. Myocardial infarction is treated with different classes of anticoagulants or antiplatelet medications, not specifically argatroban.
C. Gastrointestinal bleeding would generally be a contraindication to anticoagulation therapy rather than an indication for argatroban use.
D. Hepatotoxicity could be a concern when using argatroban, especially as it is metabolized in the liver, but it does not indicate a need for this medication.
Correct Answer is C
Explanation
A. Doxazosin is an alpha-1 blocker that can be used for hypertension but is not a first-line option.
B. Carvedilol is a beta-blocker used in heart failure and post-MI but is not the first choice for initial hypertension treatment.
C. Lisinopril, an ACE inhibitor, is widely recognized as a first-line treatment for hypertension due to its effectiveness and favorable side effect profile.
D. Clonidine is generally not considered a first-line treatment for hypertension due to potential side effects and the availability of more effective alternatives.