Which of the following concerning the pH of urine is correct? 1) is a useful indicator of the acid/base balance of the blood 2) rises on a vegetarian diet 3) is determined by the concentration of ammonium 4) is lower than 5.5 in renal tubular acidosis 5) would be above 7.0 after prolonged and severe vomiting

1 Answer

Answer :

Answers-2 c - excretion of ammonium occurs when an acid urine is produced but the pH of urine is of course determined by the concentration of H+ ions d-unable to lower the pH to less than 5.5 in RTA e- This would be expected in an attempt to compensate for the loss of acid however when there is extracellular fluid depletion the retention of sodium takes priority. Instead of bicarbonate being excreted it is reabsorbed in the proximal and distal nephron and this perpetuates the metabolic alkalosis until the fluid balance is restored with IV fluids.

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