A nurse is teaching a client with diabetes mellitus who asks, "Why is it necessary to maintain my blood glucose levels no lower than about 60 mg/dL?" How should the nurse respond?
a. "Glucose is the only fuel used by the body to produce the energy that it needs."
b. "Your brain needs a constant supply of glucose because it cannot store it."
c. "Without a minimum level of glucose, your body does not make red blood cells."
d. "Glucose in the blood prevents the formation of lactic acid and prevents acidosis."
ANS: B
Because the brain cannot synthesize or store significant amounts of glucose, a continuous supply from the body's circulation is needed to meet the fuel demands of the central nervous system. The nurse would want to educate the client to prevent hypoglycemia. The body can use other sources of fuel, including fat and protein, and glucose is not involved in the production of red blood cells. Glucose in the blood will encourage glucose metabolism but is not directly responsible for lactic acid formation.
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