Which of the following is an advantage of a dry-suction chest drainage system?

a. Lower levels of suction pressure

b. Variable bubbling, which indicates proper functioning

c. A steady bubbling sound, which indicates proper functioning

d. Higher levels of suction pressure

Correct answer: d. Advantages of dry suction system include higher levels of suction pressure, easier set-up, quieter operation (no bubbling sound), and more constant pressure because no water is lost to evaporation.

To learn more, read the continuing education article: “Chest-tube care: The more you know, the easier it gets“.