Multiple Choice
A renal calculus is the term for which of these conditions?
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25. The Urinary System
Introduction to the Urinary System
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Which of the following conditions does not result in oliguria?
A
Acute kidney injury
B
Heart failure
C
Dehydration
D
Diabetes insipidus
Verified step by step guidance1
Understand the term 'oliguria': Oliguria refers to the production of abnormally small amounts of urine, typically less than 400 mL per day in adults.
Identify conditions that commonly lead to oliguria: Acute kidney injury, heart failure, and dehydration are conditions that can reduce urine output due to impaired kidney function or reduced blood flow to the kidneys.
Consider the mechanism of diabetes insipidus: Diabetes insipidus is characterized by the inability to concentrate urine, leading to excessive urine production (polyuria), not oliguria.
Compare the conditions: While acute kidney injury, heart failure, and dehydration can lead to oliguria, diabetes insipidus results in increased urine output, which is the opposite of oliguria.
Conclude the analysis: Based on the understanding of these conditions, diabetes insipidus does not result in oliguria, as it causes polyuria instead.
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