Life support is used after the failure of one or more banks.
 In a prospective study conducted by T J Predergast and J M Luce from 1987 to 1993, when physicians recommended withholding or withdrawing life support, 90% of the patients agreed to the suggestion and only 4% refused
 Another example includes the now-ubiquitous presence of automated external defibrillators in public venues which allow lay people to deliver life support in a prehospital environment

