A nurse is reinforcing teaching with a client who has peripheral vascular disease (PVD). The nurse should recognize that which of the following statements by the client indicates a need for further teaching?

Choice A rationale:

Checking the client's blood pressure is not the priority action when administering digoxin. Although monitoring blood pressure is essential in the overall care of a client with heart failure, the most critical parameter to assess before administering digoxin is the client's apical pulse.

Choice B rationale:

Measuring the client's apical pulse is the correct action to take before administering digoxin. Digoxin is a medication commonly prescribed for heart failure, and it has a narrow therapeutic range. It primarily works by increasing the force of the heart's contractions, and an excessively low heart rate (bradycardia) is a potential side effect of digoxin. Therefore, it is crucial to assess the client's apical pulse to ensure it is within the recommended range (usually above 60 beats per minute) before administering the medication. If the pulse rate is below the recommended range, the nurse should withhold the digoxin and notify the healthcare provider.

Choice C rationale:

Offering the client a light snack is not a necessary action before administering digoxin. While it is important to consider the client's dietary needs, it is not directly related to the administration of digoxin. However, if the client has nausea or vomiting, which can be a side effect of digoxin, a light snack might be offered after the medication.

Choice D rationale:

Weighing the client is not the immediate action to take before administering digoxin. Although daily weights can be important for assessing fluid balance in clients with heart failure, it is not the priority before administering digoxin. Monitoring the client's apical pulse is the most critical step in this context.

Choice A rationale:
A client who takes glyburide for type 2 diabetes mellitus is not at significant risk for developing digoxin toxicity. Glyburide is an antidiabetic medication and does not interact directly with digoxin.

Choice B rationale: Furosemide, a loop diuretic, can cause electrolyte imbalances such as hypokalemia (normal potassium levels: 3.5 to 5.0 mEq/L) and hypomagnesemia (normal magnesium levels: 1.7 to 2.2 mg/dL). These imbalances increase the sensitivity to digoxin and the risk of toxicity. Digoxin toxicity is associated with symptoms like nausea, vomiting, and arrhythmias. Furosemide's impact on electrolytes makes it a significant risk factor for digoxin toxicity.

Choice C rationale: Cimetidine, a histamine H2 receptor antagonist, can inhibit the metabolism of certain drugs by affecting liver enzymes. However, it does not significantly alter digoxin levels or increase the risk of toxicity. Normal liver enzyme levels include ALT (7 to 56 U/L) and AST (10 to 40 U/L). While cimetidine may interact with other medications, its effect on digoxin is minimal.

Choice D rationale:
A client who takes azelastine for allergic rhinitis is not at significant risk for developing digoxin toxicity. Azelastine is an antihistamine and does not interact directly with digoxin.