Causes. Acute liver failure is most often caused by infectious agents or toxins, poor flow of fluids into the liver and surrounding tissues (perfusion), hypoxia (inability to breathe), drugs or chemicals that are destructive to the liver (hepatotoxic), and excess exposure to heat.
Definition of operate for English Language Learners. : 1  to function or behave in a proper or particular way. : 2  to use and control (something) : 3  to have control of (something, such as a business, department, program, etc.)
theÂ·aÂ·ter or theÂ·aÂ·tre (thÄâ²É-tÉr) n. 1. A building, room, or outdoor structure for the presentation of plays, films, or other dramatic performances. 2. A room with tiers of seats used for lectures or demonstrations: an operating theater at a medical school.