A Patient Showing Symptoms of Impaired Renal Function Has a Battery

question 67

Multiple Choice

A patient showing symptoms of impaired renal function has a battery of tests performed.Results are:
Serum creatinine: 2.0 mg/dL
Urine creatinine: 150 mg/dL
Serum osmolality: 270 mOsm
Urine osmolality: 100 mOsm
24-hour urine volume: 2000 mL
-Based on the information provided,calculate the free water clearance.

• A) -0.5
• B) -1.0
• C) +0.6
• D) +0.9

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Definitions:

Epithelial Cell

Cells covering the outside of the body and lining organs and cavities within the body, serving as a barrier and interface for substance exchange.

Muscle Cell

A cell that makes up the muscle tissue, characterized by its ability to contract, thus producing movement.

Neuron

A specialized cell transmitting nerve impulses; a nerve cell.

Fibrocartilage

A tough, dense type of cartilage that provides substantial support and withstands heavy pressure.