What Is the Purpose of an Underwater Seal for a Thoracotomy

question 42

Multiple Choice

What is the purpose of an underwater seal for a thoracotomy tube?

• A)to maintain a pressure consistent with pressure inside the lung itself
• B)to prevent the negative pressure within the pleural space from pulling more air in through the chest tube
• C)to reduce the pressure within the pleural space
• D)to reduce the surface tension of the pleura

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