A gerontologic nurse is analyzing the data from a patient's focused respiratory assessment. The nurse is aware that the amount of respiratory dead space increases with age. What is the effect of this physiological change?
A) Increased diffusion of gases
B) Decreased diffusion capacity for oxygen
C) Decreased shunting of blood
D) Increased ventilation
Ans: B
Feedback:
The amount of respiratory dead space increases with age. Combined with other changes, this results in a decreased diffusion capacity for oxygen with increasing age, producing lower oxygen levels in the arterial circulation. Decreased shunting and increased ventilation do not occur with age.
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Fill in the blank(s) with correct word