For pneumothoraces, the
tube is usually placed on the anterior axillary line between the 3rd and 4th
intercostal space.
Occasionally, for
anterior pneumothoraces which are difficult to drain, a tube may be
placed in the mid clavicular line between the 1st and 3rd
intercostal space. (Only one drain is usually necessary).
For effusions, the tube
should be placed in the mid-axillary line between the 4th and 5th
intercostal spaces, and directed posteriorly.