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J Thorac Cardiovasc Surg 2006;132:1503-1504
© 2006 The American Association for Thoracic Surgery
Letter to the Editor |
Wessex Cardiothoracic Centre, Southampton General Hospital, Southampton, United Kingdom
(Email: v.asopa{at}soton.ac.uk).
To the Editor:
We read with interest the article by Chetty and colleagues.1
Bonnanos catheter has been proposed as a less invasive and cost-effective alternative for drainage of a pleural effusion. We congratulate them for their cost-effective and innovative approach of using a suprapubic catheter to drain the pleura.
Pigtail catheters using the modified Seldinger technique have been found to be well tolerated by the patient and are highly effective in drainage of pleural serous and chylous effusions but less efficacious in drainage of hemothorax or pneumothorax and empyema with acceptable risk of complications.2
We agree that akin to small catheters using the Seldinger technique,3,4
Bonnanos catheter can be used. However, with the length of the trocar and the mounted catheter being approximately 30 cm, one can lose track of the distance traveled in the thoracic cavity because there are no obvious markings on the catheter itself, and one can injure vital organs in the chest cavity, as in our institutions experience (unpublished report), in which a misplaced Bonnanos catheter pierced the left ventricle, and the tip of the catheter was found in the aortic root.
Before introduction of Bonnanos catheter into general medical and surgical use to drain the pleura, this technique needs to be validated, and the results of a prospective trial are awaited. We suggest that modifications to the catheter should include surface markings, thereby allowing the distance traveled to be gauged, and reduction of the length of the trocar, thereby reducing the risk of untoward complications.
These catheters might be useful for drainage of simple pleural effusions after surgical intervention. Complications might be related to the misplacement of the trocar because of a lack of surface markings and unfamiliarity with chest anatomy. We therefore recommend this procedure to be performed by those with a detailed knowledge and appreciation of the thoracic cavity to avoid undue complications.
References
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