What does a pulse oximeter measure? a. Oxygen saturation of the blood b. Oxygen saturation of the skin c. Electrical activity of the heart d. Forced vital capacity e. Lung capacity Which of the...

What does a pulse oximeter measure?

a. Oxygen saturation of the blood

b. Oxygen saturation of the skin

c. Electrical activity of the heart

d. Forced vital capacity

e. Lung capacity

Which of the following irregularities on an ECG would be considered the most severe?

a. PVC

b. V-fib

c. A-fib

d. AC interference

e. Tachycardia