NCLEX RN Practice Question # 705

NCLEX Examination.

Practice Question # 705.

NCLEX Examination.



Chest Drainage System:


One-piece, disposable plastic drainage systems, such as the Pleur-evac, contain three chambers. The drainage chamber is on the right and has three calibrated columns that display the amount of drainage collected. When the first column fills, drainage carries over into the second and, when that fills, into the third. The water-seal chamber is located in the center.

The suction-control chamber on the left is filled with water to achieve various suction levels. Rubber diaphragms are provided at the rear of the device to change the water level or remove samples of drainage. A positivepressure relief valve at the top of the water-seal chamber vents excess pressure into the atmosphere, preventing pressure buildup.


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