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.
Length of coma. As you might expect, the longer a person is in a coma, the less promising the outcome, although individual cases can vary dramatically from the norm. One study suggested that if a coma lasts less than 12 hours, there is likely to be little long-term damage. Another study indicated that 21 percent of HIA patients who remained in a coma for four weeks or less experienced a good recovery, while the recovery for others was poor.