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Etymology: L, triplus, triple; L, lumen, light; Gk, katheter, a thing lowered into
any catheter with three separate passages, each of which is marked with the name of a fluid or medication. Some have infusion plugs and are flushed every 8 hours with a heparin or normal saline solution.
triple-lumen catheterAbbreviation: TLC
A central catheter containing three separate channels or passageways.
See also: catheter