You are the operating room nurse setting up a water-seal chest drainage system for a patient who has just had a thoracotomy. You know that the amount of suction in the system is determined by the water level
How much suction do you set the system at?
A) 20 cm H2O
B) 15 cm H2O
C) 10 cm H2O
D) 5 cm H2O
Ans: A
Feedback: The amount of suction is determined by the water level. It is usually set at 20 cm H2O; adding more fluid results in more suction.
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