Pleuroperitoneal shunting for malignant pleural effusions

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Abstract
Traditional therapy for malignant pleural effusions includes thoracentesis or tube drainage with instillation of irritants to achieve pleurodesis. This can require a lengthy hospitalization, causes pain and discomfort, and has an appreciable failure rate. Because of these drawbacks, the authors used a shunting device to transfer fluid to the peritoneal cavity in 17 patients with malignant pleural effusions. Eleven patients had undergone previous therapeutic thoracenteses and three had chest tube placement with failed sclerosis. The shunt was a subcutaneous valved pump chamber with attached pleural and peritoneal catheters, which used manual compression to transfer fluid against the normal abdominal/pleural pressure gradient. Operative placement under local or general anesthesia was performed without complication. Five patients achieved minimal benefit, either because of moribund status (2) or their inability to compress the pump effectively (3). In the other 12 patients, there was radiographic evidence of diminished or stabilized pleural effusion; respiratory symptoms were effectively palliated, and no further treatment for their effusion was required. Peritoneal dissemination of malignant cells has not been clinically detected. We feel that pleuroperitoneal shunting is a valid new method for treatment of malignant pleural effusions which can effectively palliate respiratory symptoms with low morbidity. Advantages include the absence of external tubing and the possibility for only a short hospitalization or even outpatient placement. Shunting is applicable for patients who are able to perform the requisite pumping and is particularly suitable for those with trapped lungs or who have failed attempted pleural sclerosis.

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