. A patient with central diabetes insipidus is being treated with desmopressin (DDAVP) and fluid replacement. Which of the following lab values should the nurse monitor closely?
Serum sodium levels
Serum magnesium levels
Serum potassium levels
Serum calcium levels
The Correct Answer is A
A. Serum sodium levels: Desmopressin can lead to water retention and potentially hyponatremia. Monitoring serum sodium is crucial to prevent electrolyte imbalance.
B. Serum magnesium levels: Magnesium is not typically impacted by desmopressin treatment in central diabetes insipidus.
C. Serum potassium levels: Desmopressin does not generally affect potassium levels in patients with diabetes insipidus.
D. Serum calcium levels: Calcium levels are not directly influenced by desmopressin or diabetes insipidus.
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Correct Answer is D
Explanation
A. Frequent urination. Frequent urination is not typically associated with Crohn’s disease, which primarily affects the gastrointestinal system.
B. Jaundice. Jaundice is related to liver or biliary system issues and is not a common symptom of Crohn’s disease.
C. Joint pain. While Crohn’s disease may be associated with extraintestinal symptoms, joint pain is not as common as gastrointestinal symptoms during an exacerbation.
D. Abdominal pain and cramping. Abdominal pain and cramping are common symptoms of Crohn’s disease, especially during flare-ups, due to inflammation in the digestive tract.
Correct Answer is B
Explanation
A. Inflammation of the motor cortex leads to decreased coordination and balance. Parkinson’s disease is not caused by inflammation in the motor cortex; it primarily involves the loss of dopamine-producing neurons.
B. Degeneration of dopamine-producing neurons in the substantia nigra of the brain leads to motor dysfunction. Parkinson’s disease is caused by the degeneration of dopamine-producing neurons in the substantia nigra, leading to motor symptoms such as tremors, rigidity, and bradykinesia.
C. A loss of acetylcholine in the brain leads to memory problems and cognitive decline. While a loss of acetylcholine is associated with Alzheimer’s disease, it is not the primary issue in Parkinson’s disease.
D. Excess production of dopamine in the basal ganglia leads to tremors and muscle rigidity. In Parkinson’s disease, there is a decrease, not an excess, in dopamine production, which contributes to motor symptoms.