Identify the purposes of chest drainage. (Select all that apply.)
a. Drains air, blood, and fluid from pleural space
b. Restores positive pressure in chest cavity
c. Restores negative intrapleural pressure
d. Allows lung to collapse and rest
e. Allows route for medication administration
ANS: A, C
A chest tube or tubes may be inserted for continuous drainage of fluid, blood, or air from the pleural cavity and for medication instillation. To prevent the lung from collapsing, a closed drainage system is used, which maintains the lung cavity's normal negative pressure. The chest tubes are connected to a pleural drainage system with collection, water seal, and suction control chambers to drain secretions and reestablish negative pressure in the pleural space.
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