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.)
Definition of undertaking - a formal pledge or promise to do something, a task that is taken on; an enterprise, the business of managing funerals. Definition of undertaking - a formal pledge or promise to do something, a task that is taken on; an enterprise, the business of managing funerals. dictionary thesaurus