A 92-year-old patient is scheduled for a colectomy. Which of the following physiological changes accompanies the aging process and increases this patient's risk for surgery?
a. An increased tactile sensation
b. An increased metabolic rate
c. A relaxation of arterial walls
d. Reduced glomerular filtration
D
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A The older adult patient has reduced tactile sense, which decreases the patient's ability to respond to early warning signs of surgical complications, including sensing pressure over bony prominences.
B The older adult patient has a lower basal metabolic rate, reducing total oxygen consumption.
C Rigidity of arterial walls is seen in the older adult.
D The older adult patient is likely to have a reduced glomerular filtration rate. This limits the body's ability to eliminate drugs or toxic substances.
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