Answer to Question 1
cyanosis
Bluish (cyanosis) coloring of the skin is caused by hypoxia (late sign of decreased oxygen levels).
Answer to Question 2
C
The abduction splint or pillow, used after hip replacement surgery, maintains the patient's legs in an abducted position. This permits the patient to be turned without changing the position of the healing limb, and prevents dislocation of the hip prosthesis.