Which of the following is a potential cause of central diabetes insipidus (CDI)?
Excessive fluid intake.
Kidney dysfunction.
Trauma or injury to the hypothalamus or pituitary gland.
Hypersecretion of aldosterone.
The Correct Answer is C
Central diabetes insipidus (CDI) can be caused by trauma or injury to the hypothalamus or pituitary gland, which disrupts the production or release of antidiuretic hormone (ADH). Other causes of CDI include tumors, infections, and certain medications.
Incorrect choices:
a. This choice is incorrect. Excessive fluid intake can lead to increased urine output, but it is not a cause of CDI.
b. This choice is incorrect. Kidney dysfunction is not a common cause of central diabetes insipidus.
d. This choice is incorrect. Hypersecretion of aldosterone would lead to sodium retention and increased fluid volume, which is not characteristic of central diabetes insipidus.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Central diabetes insipidus is caused by trauma, surgery, or other factors that affect the production or release of ADH from the hypothalamus or pituitary gland.
Incorrect choices:
b. This choice is incorrect. Nephrogenic diabetes insipidus is characterized by a lack of response to ADH by the kidneys.
c. This choice is incorrect. Neurogenic diabetes insipidus is not a recognized classification of diabetes insipidus.
d. This choice is incorrect. Type 2 diabetes insipidus is not a recognized classification of diabetes insipidus.
Correct Answer is A
Explanation
The water deprivation test is commonly used to differentiate between central and nephrogenic diabetes insipidus. It involves withholding fluids and monitoring urine output and concentration.
Incorrect choices:
b. This choice is incorrect. A blood glucose test is used to diagnose and monitor diabetes mellitus, not diabetes insipidus.
c. This choice is incorrect. A thyroid function test is not directly related to the diagnosis of diabetes insipidus.
d. This choice is incorrect. A serum creatinine test assesses kidney function but is not specific to diabetes insipidus diagnosis.
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