The drain was not returned therefore an evaluation of the unit could not be conducted.Based on the details of the complaint it is possible that there was a large air leak either in the drain or the patient line connection that caused rapid bubbling in the air leak chamber.This may cause condensation within the air leak chamber and evaporation of the fluid in the air leak chamber.The report received stated that the water turned greenish around the area of the bellows for this to occur the drain most likely was either knocked over at some point or the water seal was filled from the suction port and not at the needleless luer port located on the back of the drain.All drains are tested in line during manufacture to ensure the functionality of the regulator.Without the drain in question this cannot be confirmed.The lot number was not provided so a device history record review was unable to be performed.The express drain is indicated for the evacuation of air and/or fluid from the chest cavity or mediastinum and to help re-establish lung expansion and restore breathing dynamics.It is also used to facilitate post-operative collection and reinfusion of autologous blood from the patient¿s pleural cavity or mediastinal area.It is imperative that chest drainage systems and patient status be methodically assessed at frequent and regular intervals.The system must be checked for loose connections, tubing security and presence or absence of air leak.Other inspections include kinking of the tubing, dependent loops, closed clamps, color and character of the drainage, the rate of drainage, the water seal, bubbling (continuous or intermittent) and the negative pressure indicator.The instructions for use (ifu) instruct to always place chest drain below the patient¿s chest in an upright position and to avoid accidental knock-over, place the unit on the floor or hang it bedside with the hangers provided.It also states users should be familiar with thoracic surgical procedures and techniques before using a chest drain.
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