Should central venous catheters be used to drain pleural effusions?

We read with interest the article by Singh and coworkers [1] describing the use of central venous catheters to drain pleural effusions.

We agree that the use of small-bore catheters has a number of advantages compared with repeated thoracocentesis or the use of traditional large-bore drains inserted by blunt dissection. Indeed, recent guidelines [2] support the use of smaller bore tubes (8–14 Fr; except for haemothorax) in both pleural effusions and pneumothorax.

However, we have reservations regarding the routine use of central venous catheters to drain pleural effusions. Several manufacturers (including the Sims-Portex Seldinger Chest Drainage Kit and Cook Quick-Thal Chest Tube) have specific chest drainage systems that take advantage of the Seldinger dilator over a wire method of insertion. These have the advantage of having a number of side ports (two to four), which reduces the possibility of blockage by debris, and they are available in a range of sizes (8–36 Fr).

While we applaud innovation, in today's medico-legal climate it is surely wiser to use specifically designed equipment if it is available.