"Artificial Kidneys" Do Not Function in All Respects Like a Natural

question 72

Multiple Choice

"Artificial kidneys" do not function in all respects like a natural kidney. What is one inherent problem and what is its practical solution?

• A) Artificial systems are less efficient; run the artificial kidney 24 hours a day.
• B) Artificial kidneys are complex and must be operated at hospitals; train home care nurses.
• C) Dialysis uses passive diffusion and some kidney functions require selective active transport; restrict diet to limit the variety of waste molecules.
• D) Artificial kidneys treat the blood directly, requiring IV tubing, etc.; invent an alternative to avoid the bloodstream.
• E) Blood coagulates any time it leaves the body; dilute the blood.

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Definitions:

Capacitance Tester

A device used to measure the capacitance (the ability of a component to store an electric charge) of various electrical components.

CCA

Cold Cranking Amps; a rating used to describe a battery's ability to start an engine in cold temperatures.

Sealed Lead-Acid Battery

A type of rechargeable battery that uses lead peroxide and sponge lead, contained in a sealed unit to prevent leakage and reduce maintenance.

Carbon Pile Testing

A method for assessing the performance of an electrical component or system, such as a battery or alternator, by applying adjustable loads.