Answer to Question 1
A
A. Pleural effusions usually drain straw-colored fluid.
B. Empyema is a collection of pus in the pleural cavity, and the drainage is pus colored.
C and D. Drainage from recent open chest surgery is initially bright red and gradually becomes serous as the postoperative course continues.
Answer to Question 2
C
C. In the water system, observe for constant; gentle bubbling in the suction control chamber when it is connected to suction.
A. No bubbling may indicate a blockage.
B. In the water system, observe for constant, gentle bubbling in the suction control chamber when it is connected to suction. Vigorous bubbling indicates wall suction set higher than necessary.
D. In the water system, observe for constant, gentle bubbling in the suction control chamber when it is connected to suction. Intermittent bubbling may indicate a partial blockage.