Question

Your BUN is elevated while you are following a low calorie, low protein diet. What is...

Your BUN is elevated while you are following a low calorie, low protein diet. What is the best reason why?

anabolism

catabolism

increased nitrogenous waste production

dehydration

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Answer #1

BUN is the blood urea nitrogen is a waste product of protein metabolism. there are many factors influencing BUN, such as protein breakdown, hydration status and liver failure.normal adult range is 7-20mg/100 ml.

since BUN is elevated with low-calorie protein diet anabolism and catabolism, not an answer. since low protein diet, nitrogenous waste production would be low.

thus, the answer would be dehydration. due to lack of fluid to excrete waste products. low fluid results in decreased urine flow lead to increased urea reabsorption due to the action of antidiuretic hormone.

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