What it means
In mental health texts it most often appears in DSM-5-TR, the text revision of the Diagnostic and Statistical Manual of Mental Disorders. In heart notes it can mean tricuspid regurgitation, a leaky tricuspid valvetry-KUS-pid VALVThe heart valve between the right atrium and the right ventricle.tri- threecusp point, flapFull entry . After a drug name it can mean a timed-release form. The setting tells which one is meant.
For the nurse
When a drug name ends in TR or another release letter, check that the form on hand matches the order; timed-release forms are usually swallowed whole.
Related terms
tricuspid valve
The heart valve between the right atrium and the right ventricle.