This technique for the drainage of simple pleural effusions is simple, safe and effective. It requires little more skill than the ability to perform a thoracentesis or central venous line placement. It appears ideal for both the bedridden patient who cannot sit for repetitive thoracocentesis and for the ambulatory patient who need not be tied down with a chest tube and underwater seal system. We stress that the system is functional only for simple transudates and will provide unsatisfactory drainage of thick or bloody effusions
