he 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)?
hypokalemia
hyperkalemia
hypocalcemia
hypernatremia
The Correct Answer is A
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.
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Correct Answer is ["C","D","E","F"]
Explanation
A) Constipation: While constipation can occur with digoxin use, it is not a classic sign of digoxin toxicity. Therefore, it is less critical for the client to monitor this symptom specifically in relation to toxicity.
B) Dark red urine: Dark red urine is not typically associated with digoxin toxicity. This symptom could indicate other conditions, such as blood in the urine or issues with the kidneys, but it is not a direct manifestation of digoxin toxicity.
C) Bradycardia: Digoxin toxicity can lead to bradycardia, characterized by a slower than normal heart rate. The client should be instructed to monitor their pulse and report any significant changes, especially if the heart rate drops below 60 beats per minute.
D) Nausea: Nausea is a common symptom of digoxin toxicity. Clients should be aware of this and report any persistent or severe nausea, as it may indicate that the digoxin levels in their system are too high.
E) Vomiting: Vomiting is another classic sign of digoxin toxicity. Clients should be instructed to report any episodes of vomiting, as this can further complicate their condition and may require adjustment of their medication.
F) Anorexia: Anorexia, or loss of appetite, can also occur with digoxin toxicity. Clients should be advised to monitor their appetite and report any significant changes, as this can be an early indicator of toxicity.
Correct Answer is C
Explanation
A) Platelet counts: Monitoring platelet counts is not necessary with atorvastatin therapy. While certain medications may affect platelet levels, atorvastatin primarily targets lipid levels and does not have a significant impact on platelet function.
B) Lung function test: Lung function tests are not relevant for atorvastatin use. These tests are typically utilized for assessing respiratory conditions and are not part of the routine monitoring for cholesterol-lowering medications.
C) Liver function test: Atorvastatin can affect liver function, so it is essential to monitor liver
enzymes (such as AST and ALT) regularly. Routine liver function tests help identify any potential hepatotoxicity early, allowing for timely intervention if liver function declines.
D) Bun and creatinine levels: While monitoring renal function can be important in some contexts, it is not a routine requirement specifically for atorvastatin. However, it may be necessary in certain patient populations or if there are concerns about kidney function, but liver function tests are the primary focus with this medication.