Modified Allen Test Quiz

What is the primary purpose of an Arterial Blood Gas (ABG) test?

• To measure blood pressure

• To evaluate kidney function

• To assess oxygenation and acid-base balance

• To check heart rate

Which artery is most commonly used for collecting an ABG sample?

• Brachial artery

• Femoral artery

• Carotid artery

• Radial artery

Why is the Modified Allen Test performed before collecting an ABG sample?

• To assess heart rate

• To measure blood pressure

• To ensure the ulnar artery can provide collateral blood flow

• To check for infection

What is the first step in performing the Modified Allen Test?

• Evaluate the return of blood flow

• Ask the patient to open and close their hand

• Apply firm pressure to both the radial and ulnar arteries

• Loosen pressure on the radial artery

What indicates a normal response in the Modified Allen Test?

• The hand turns blue

• The hand remains pale

• The hand returns to normal color within 5 seconds

• The hand becomes swollen