A 10 years old boy is having polyuria, polydipsia. Laboratory data showed (in meq/L):Na+ – 154K+ – 4.5HCO3- – 22S. Osmolality – 295B. Urea-50Uric specific gravity – 1.005What is the diagnosis?
Correct Answer: Diabetes insipidus
Description: a. Diabetes insipidus(Ref: Nelson's 20/e p 348-349, Ghai 8/e p 501-519)The given child in question has presented with clinical features: Polyuria, polydipsia. Lab data: Hypernatremia (S. Na+ - 154meq/L), Raised S. Osmolality (S. Osmolality - 295), Raised B. Urea (B. urea - 50), Normal K+, HCO - (4.5, 22 respectively). The given clinical and laboratory features are compatible with a diagnosis of diabetes insipidus
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