29. A 3-month-old boy is brought to the emergency department because of a 2-day history of lethargy. Physical examination shows no other abnormalities. The results of laboratory studies are shown: Serum Na CI- A) Angiotensin-converting enzyme B) Aquaporin C) 11a-Hydroxylase D) Renin E) Vasopressin receptors Osmolality Specific gravity Osmolality Urine 165 mEq/L (N=139-146) 130 mEq/L (N=95-105) 334 mOsmol/kg H₂O (N=282-295) 1.001 117 mOsmol/kg H₂O (N>200) He is admitted to the hospital. His urine output is increased. His serum ADH (vasopressin) concentration is 24 pg/mL (N=1-5); aldosterone and renin concentrations are within the referem ranges. The urine osmolality remains unchanged after administration of 1-deamino-8-arginine vasopressin. An MRI of the brain and pituitary gland shows no abnormalities. Ultrasonogra shows normal kidneys. The most likely underlying cause of the findings in this patient is a defect in which of the following?
29. A 3-month-old boy is brought to the emergency department because of a 2-day history of lethargy. Physical examination shows no other abnormalities. The results of laboratory studies are shown: Serum Na CI- A) Angiotensin-converting enzyme B) Aquaporin C) 11a-Hydroxylase D) Renin E) Vasopressin receptors Osmolality Specific gravity Osmolality Urine 165 mEq/L (N=139-146) 130 mEq/L (N=95-105) 334 mOsmol/kg H₂O (N=282-295) 1.001 117 mOsmol/kg H₂O (N>200) He is admitted to the hospital. His urine output is increased. His serum ADH (vasopressin) concentration is 24 pg/mL (N=1-5); aldosterone and renin concentrations are within the referem ranges. The urine osmolality remains unchanged after administration of 1-deamino-8-arginine vasopressin. An MRI of the brain and pituitary gland shows no abnormalities. Ultrasonogra shows normal kidneys. The most likely underlying cause of the findings in this patient is a defect in which of the following?
Chapter10: Reconstitution Of Powdered Drugs
Section: Chapter Questions
Problem 4.4P
Related questions
Question
![29. A 3-month-old boy is brought to the emergency department because of a 2-day history of lethargy. Physical examination shows no other abnormalities. The results of laboratory studies are
shown:
Serum
Na+
CI-
A) Angiotensin-converting enzyme
B) Aquaporin
C) 11a-Hydroxylase
D) Renin
E) Vasopressin receptors
Osmolality
Specific gravity
Osmolality
Urine
165 mEq/L (N=139-146)
130 mEq/L (N=95-105)
334 mOsmol/kg H₂O (N=282-295)
1.001
117 mOsmol/kg H₂O (N>200)
He is admitted to the hospital. His urine output is increased. His serum ADH (vasopressin) concentration is 24 pg/mL (N=1-5); aldosterone and renin concentrations are within the referenc
ranges. The urine osmolality remains unchanged after administration of 1-deamino-8-arginine vasopressin. An MRI of the brain and pituitary gland shows no abnormalities. Ultrasonograp
shows normal kidneys. The most likely underlying cause of the findings in this patient is a defect in which of the following?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F03c06bad-2aae-4ab3-af42-e0bbbe7e12a3%2Fb14c272d-140d-4555-b83b-39d7e917526c%2Fun42e1j_processed.jpeg&w=3840&q=75)
Transcribed Image Text:29. A 3-month-old boy is brought to the emergency department because of a 2-day history of lethargy. Physical examination shows no other abnormalities. The results of laboratory studies are
shown:
Serum
Na+
CI-
A) Angiotensin-converting enzyme
B) Aquaporin
C) 11a-Hydroxylase
D) Renin
E) Vasopressin receptors
Osmolality
Specific gravity
Osmolality
Urine
165 mEq/L (N=139-146)
130 mEq/L (N=95-105)
334 mOsmol/kg H₂O (N=282-295)
1.001
117 mOsmol/kg H₂O (N>200)
He is admitted to the hospital. His urine output is increased. His serum ADH (vasopressin) concentration is 24 pg/mL (N=1-5); aldosterone and renin concentrations are within the referenc
ranges. The urine osmolality remains unchanged after administration of 1-deamino-8-arginine vasopressin. An MRI of the brain and pituitary gland shows no abnormalities. Ultrasonograp
shows normal kidneys. The most likely underlying cause of the findings in this patient is a defect in which of the following?
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Recommended textbooks for you