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The second chamber functions as a "water seal", which acts as a one way valve allowing gas to escape, but not reenter the chest. Air bubbling through the water seal chamber is usual when the patient coughs or exhales but may indicate, if continual, a pleural or system leak that should be evaluated critically.
The simplest system that is sufficient for chest drainage is a one-chamber system. It uses either a Heber-drain or an active suction source and comprises a single collection canister. For active or passive air evacuation, a water seal component is attached. To ensure that all air is sucked out when using a Heber-drain, manual support might be ...
Suction is applied through the drain to generate a vacuum and draw fluids into a bottle. Shirley drain; Pigtail drain - has an exterior screw to release the internal "pigtail" before it can be removed; Davol; Chest tube - is a flexible plastic tube that is inserted through the chest wall and into the pleural space or mediastinum; Wound manager
Chest tubes are required in PSPs that have not responded to needle aspiration, in large SSPs (>50%), and in cases of tension pneumothorax. They are connected to a one-way valve system that allows air to escape, but not to re-enter, the chest. This may include a bottle with water that functions like a water seal, or a Heimlich valve.
In many hospitals and other health facilities, suction is typically provided by suction regulators, connected to a central medical vacuum supply by way of a pipeline system. The plastic, rigid Yankauer suction tip is one type of tip that may be attached to a suction device. Another is the plastic, nonrigid French or whistle tip catheter.
Flutter (Heimlich) valve: a specific one-way valve used on the end of chest drain tubes to treat a pneumothorax; Foot valve: a check valve on the foot of a suction line to prevent backflow; Four-way valve: was used to control the flow of steam to the cylinder of early double-acting steam engines
A double lumen endotracheal tube is used to keep one lung breathing while the other is being washed. The lung to be washed is filled with fluid by gravity, then drained. Drainage can be done by suction [2] or gravity. [10] Some versions add a shaking step between the filling and draining to help with the washing. [2]
Another type of endotracheal tube has a small second lumen opening above the inflatable cuff, which can be used for suction of the nasopharngeal area and above the cuff to aid extubation (removal). This allows suctioning of secretions that sit above the cuff which helps reduce the risk of chest infections in long-term intubated patients.