Blood Urea Nitrogen is decreased in:: (A) Hypo-ammonemia, (B) Hyper-ammonemia, (C) Hyperventilation, (D) Hypoventilation
Answer is B. Blood Urea Nitrogen is decreased in urea cycle defects,where Hyper-ammonemia occurs C/f of urea cycle defects:- Increased blood glutamine Decreased BUN (Blood Urea Nitrogen) Cerebral oedema Vomiting Lethargy Blurred vision Slurred speech & hyperventilation. Note:-Severe ammonia toxicity can lead to coma and eventually death.