BLS definition medical
Basic life support (BLS) is a level of medical care which is used for victims of life-threatening illnesses or injuries until they can be given full medical care at a hospital.he term BLS is also used in some non-English speaking countries (e.g. in Italy) for the education of first responders. 1  Spain: SVB (soporte vital basico). 2  BÃ¡sico: belgium aide medicale (mÃ©dicale urgente emergency)/ MEDICAL (assistance ehbo eerste hulp, bij ongelukken). 3  First: AID (Brazil sbv suporte basico).  bÃ¡sico de vida