HHNKC is also known as diabetic hyperglycemic hyperosmolar coma (HHOC), hyperosmolar nonketotic coma (HONK), hyperosmolar hyperglycemic state (HHS) or hyperosmolar hyperglycemic nonketotic syndrome (HHNS). In HHNKC, blood sugar levels rise, and your body tries to get rid of the excess sugar by passing it into your urine.
Pressures sores result from the death (necrosis) of tissues due to local deprivation of blood supply, and thus of oxygen (ischemic necrosis). This is why tissue compression is the first clinical sign of pressure sores; it blocks the small blood vessels supplying tissues.
A brain and nervous system (neurological) exam will usually show increased intracranial pressure and problems with brain function. Tests to diagnose a liquefactive necrosis may include: 1  Head CT scan. 2  Electroencephalogram (EEG). 3  MRI of head. 4  Blood cultures.  Complete blood count (CBC).