What does the medical abbreviation HLT mean?

The medical abbreviation HLT typically stands for "heparin lock technique," which refers to a method used to maintain venous access by flushing a catheter with heparinized saline to prevent clotting. It may also refer to "hypotensive" in some contexts, indicating low blood pressure. However, the specific meaning can vary based on the medical setting, so it's important to consider the context in which it is used.