A nurse is caring for an elderly patient. Which of the following are true regarding the hematolog-ical system and aging? (select all that apply)
a. Total serum iron is decreased.
b. Total iron-binding capacity is decreased.
c. Intestinal iron absorption is decreased.
d. Lymphocyte function is unchanged.
e. Platelet aggregation is unchanged.
ANS: A, B, C
Total serum iron, total iron-binding capacity, and intestinal iron absorption are all decreased somewhat in elderly persons. Lymphocyte function decreases with age. Platelet adhesiveness usually increases.
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