Online communication between school and home. Online communication between home and school is the use of digital telecommunication to convey information and ideas between teachers, students, parents, and school administrators.
In more severe cases a coma may last for over five weeks, while some have lasted as long as several years. After this time, some patients gradually come out of the coma, some progress to a vegetative state, and others die. Some patients who have entered a vegetative state go on to regain a degree of awareness. Others remain in a vegetative state for years or even decades (the longest recorded period being 42 years). The outcome for coma and vegetative state depends on the cause, location, severity and extent of neurological damage.
Medically speaking, a coma is the state of protective deep sleep your body goes into when severely injured, as in a car crash. Daytime soap operas would be lost without a good coma every few weeks. Coma comes from the Greek koma meaning deep sleep.. As with so many words with medical or scientific origins, coma has been appropriated for a far wider range of uses.