Which laboratory finding is indicative of diabetes insipidus (DI)?
Low blood glucose levels.
Elevated urine osmolality.
Hypernatremia.
High urine glucose levels.
The Correct Answer is B
In diabetes insipidus, the inability to concentrate urine leads to diluted urine with low osmolality. An elevated urine osmolality is indicative of the inability to properly conserve water.
Incorrect choices:
a. This choice is incorrect. Low blood glucose levels are not characteristic of diabetes insipidus.
c. This choice is incorrect. Hypernatremia, or elevated sodium levels, can result from excessive fluid loss in diabetes insipidus, but it is not a direct diagnostic indicator.
d. This choice is incorrect. High urine glucose levels are indicative of diabetes mellitus, not diabetes insipidus.
Nursing Test Bank
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 B
Explanation
Diabetes insipidus is primarily caused by the hyposecretion or inadequate release of antidiuretic hormone (ADH), also known as vasopressin. ADH is responsible for regulating water balance by promoting water reabsorption in the kidneys.
Incorrect choices:
a. This choice is incorrect. Overproduction of ADH would lead to excessive water reabsorption and concentrated urine, which is not characteristic of diabetes insipidus.
c. This choice is incorrect. Hypersecretion of aldosterone would lead to sodium retention and increased fluid volume, which is not characteristic of diabetes insipidus.
d. This choice is incorrect. Impaired function of the thyroid gland would lead to thyroid-related disorders, not diabetes insipidus.
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