How does pulse oximetry measure the oxygenation of arterial blood?
a. via x-rays
b. via ultrasound
c. via stethoscope
d. via light waves
e. via microphone
Question 2
When surgical removal of a tumor follows chemotherapy used to reduce the size of the tumor, it is referred to as ________ surgery.
a. adjuvant
b. palliative
c. salvage
d. primary