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Question

In diabetes melitus the patient drinks more water as there is urinary loss of

A
Salt
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B
Insulin
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C
Protein
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D
Glucose
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Solution

The correct option is A Glucose
The diabetic condition increases the renal threshold for glucose and not all reabsorbed by the tubules. The remaining glucose in the filtrate raises the osmolality which reduces the water reabsorption and increases the volume of urine produced. This causes electrolyte imbalance and excretion of urine of high specific gravity. Polyuria leads to hypovolaemia, extreme thirst and polydipsia. Thus, the correct answer is option D.

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