underwater seal drainage

un·der·wa·ter seal drain·age

(ŭn'dĕr-waw'tĕr sēl drān'ăj)
Connected to an intercostal catheter, a drain is placed underwater, thus creating a seal and allowing for lung reexpansion through the removal of air, or drainage of pus, blood or other fluid, while preventing reentry of air into the space.
References in periodicals archive ?
Biopsies were sent for test, and chest drains were placed connected to underwater seal drainage bottle.
A chest tube was inserted under local anesthesia in the left mid axillary line without complications and connected to underwater seal drainage system in the emergency department.
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