A nurse is caring for a client who is taking lithium and reports starting a new exercise program.
The nurse should assess the client for which of the following electrolyte imbalances?
Hypomagnesemia.
Hypocalcemia.
Hyponatremia.
Hypokalemia.
The Correct Answer is C
Lithium can cause hyponatremia by increasing the secretion of antidiuretic hormone and reducing the renal clearance of sodium.
Strenuous exercise can also cause hyponatremia by increasing sweat loss and fluid intake. Therefore, a client who is taking lithium and starting a new exercise program is at risk of developing hyponatremia.
Choice A is wrong because hypomagnesemia is not a common side effect of lithium or exercise.
Choice B is wrong because hypocalcemia is not a common side effect of lithium or exercise.
Choice D is wrong because hypokalemia is not a common side effect of lithium or exercise.
However, lithium can interact with some diuretics that can cause hypokalemia, so the client should avoid taking these drugs without consulting their doctor. Normal ranges for electrolytes are:
Sodium: 135-145 mmol/L
Magnesium: 0.7-1.1 mmol/L
Calcium: 2.1-2.6 mmol/L
Potassium: 3.5-5.0 mmol/L
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
This is because it uses the full name of the drug, the exact dose, the route of administration, the frequency, and the indication for use. It also avoids any abbreviations that could be confused with other drugs or measurements.
Choice B is wrong because MS is an abbreviation for morphine sulfate which could be mistaken for magnesium sulfate.
Choice C is wrong because MSO4 is an abbreviation for morphine sulfate that could be mistaken for magnesium sulfate.
Choice D is wrong because 6.0 mg could be misread as 60 mg and lead to a tenfold overdose.
Normal ranges for morphine dosage depend on the route of administration, the indication, and the patient’s tolerance and response.
For acute pain, the usual oral dose is 10 to 30 mg every 4 hours as needed. For chronic pain, the usual oral dose is 15 to 30 mg every 8 to 12 hours as needed.
For intravenous (IV) administration, the usual dose is 2.5 to 15 mg every 4 hours as needed.
The morphine equivalent daily dose (MEDD) is a concept that attempts to establish an equivalency in terms of dose when comparing any opioid to morphine.
Correct Answer is ["B","D","E"]
Explanation
Older adults are at higher risk of adverse drug reactions due to multiple health problems, polypharmacy, and decreased renal function.
These factors can affect the pharmacokinetics and pharmacodynamics of pain medications and increase the likelihood of drug interactions, overdosage, or toxicity.
Choice A is wrong because the decreased percentage of body fat does not increase the risk of adverse drug reactions in older adults.
In fact, an increased percentage of body fat can alter the distribution and elimination of some drugs.
Choice C is wrong because an increased rate of absorption does not increase the risk of adverse drug reactions in older adults.
In fact, decreased rate of absorption can occur due to reduced gastric motility and blood flow.
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