Question 1
pts
Which diagnostic criteria is consistent with the diagnosis of the Syndrome of Inappropriate Anti-
Diuretic Hormone (SAIDH).
Hypovolemia
Serum osmolality of 325 mosm/kg
Urine sodium of 12
Urine osmolality of 125 mosm/kg
Question 2
pts
An adult with newly diagnosed lymphoma presents with abdominal pain. His serum calcium is
14 mg/d and his serum albumin is 3.5 mg/dl. His serum prealbumin is 12 mg/dl. What is the
most likely cause of this laboratory abnormality.
Acute kidney injury
Ectopic synthesis of calcitriol lymphoma
Primary hyperparathyroidism
Malnutrition
Question 3
pts
The formula for corrected serum total calcium is:
Corrected calcium = serum total calcium + (0.18 × [8 − serum albumin concentration])
Corrected calcium = serum total calcium + (0.8 × [8 − serum albumin concentration])
Corrected calcium = serum total calcium + (0.8 × [4 − serum
albumin concentration])
Corrected calcium = serum total calcium + (1.8 × [4 − serum albumin concentration])
Question 4
pts
What condition is consistent with a serum sodium of 130 mmol/L and a Plasma osmolality of
260 mOsm/kg H20.
pts
Which diagnostic criteria is consistent with the diagnosis of the Syndrome of Inappropriate Anti-
Diuretic Hormone (SAIDH).
Hypovolemia
Serum osmolality of 325 mosm/kg
Urine sodium of 12
Urine osmolality of 125 mosm/kg
Question 2
pts
An adult with newly diagnosed lymphoma presents with abdominal pain. His serum calcium is
14 mg/d and his serum albumin is 3.5 mg/dl. His serum prealbumin is 12 mg/dl. What is the
most likely cause of this laboratory abnormality.
Acute kidney injury
Ectopic synthesis of calcitriol lymphoma
Primary hyperparathyroidism
Malnutrition
Question 3
pts
The formula for corrected serum total calcium is:
Corrected calcium = serum total calcium + (0.18 × [8 − serum albumin concentration])
Corrected calcium = serum total calcium + (0.8 × [8 − serum albumin concentration])
Corrected calcium = serum total calcium + (0.8 × [4 − serum
albumin concentration])
Corrected calcium = serum total calcium + (1.8 × [4 − serum albumin concentration])
Question 4
pts
What condition is consistent with a serum sodium of 130 mmol/L and a Plasma osmolality of
260 mOsm/kg H20.
