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Etymology: ME, thurgh + AS, drachen, tear drop
a method of irrigating a body organ by inserting two tubes, one to introduce the fluid and another to drain the fluid that accumulates within the organ.
Irrigation and drainage of a cavity or an organ such as the bladder by placing two perforated tubes, drains, or catheters in the area. A solution is instilled through one catheter, and the other tube collects the returned fluid actively (by suction) or passively.
See also: drainage