ABSTRACT
The objectives of the study were to determine the most effective and reliable means of restraining children on an ambulance cot and to develop recommended field procedures for emergency medical service providers. A series of crash tests at 48 km/h were conducted using convertible child restraints, car beds, and harness systems tested with 3-year, infant, and 6-year size dummies. Belt configuration and backrest position were varied. A new cot and fastener system significantly improved restraint performance over older systems previously tested. A two-belt attachment with elevated cot backrest was found to be the method with the least performance variability for securing either a convertible child restraint or a car bed. It was concluded that children who weight up to 18 kg, fit in a convertible child restraint, and can tolerate a semi-upright seated position can be restrained in a convertible child restraint secured with two belts to an ambulance cot. Infants who must lie flat can be restrained in a car bed modified for two seatbelt paths and secured to a cot. In each case, the cot backrest must be elevated, and the cot and anchor system must be crashworthy. None of the harness configurations tested proved to be satisfactory, but an effective system could be developed by following accepted restraint design principles.
Subject(s)
Accidents, Traffic , Ambulances , Child Welfare , Protective Devices , Restraint, Physical/instrumentation , Beds , Child , Humans , Restraint, Physical/methods , Seat BeltsABSTRACT
Motor vehicle crashes remain a leading cause of death and injury to young children. Appropriate child safety seats and child safety restraints can provide life-saving protection to children riding in motor vehicles. Many children, however, travel unrestrained or improperly restrained. Consideration of appropriate child safety restraint systems for children is an important aspect of discharge planning and can provide families with the means to prevent unintentional injuries and deaths resulting from motor vehicle crashes.
Subject(s)
Health Plan Implementation , Infant Equipment , Nurse's Role , Wounds and Injuries/nursing , Child , Child, Preschool , Developmental Disabilities/nursing , Humans , Infant , Needs Assessment , Risk Factors , Wounds and Injuries/prevention & controlABSTRACT
While motor vehicle crashes remain one of the leading causes of death and injury to children, proper and consistent use of child safety seats and safety belts can greatly improve children's chances of survival in motor vehicle crashes. Children with orthopaedic conditions and children after orthopaedic surgery, however, may be restricted to specialized child restraint options that are capable of providing proper fit and safe travel for a period of time after the procedure. To assure proper selection and avoid secondary injury, parents and health care professionals need to be aware of best practices for transporting children postoperatively and of restraint options that exist for children with orthopaedic conditions.
Subject(s)
Infant Equipment , Orthopedic Nursing/methods , Seat Belts , Transportation of Patients/methods , Age Factors , Child , Child, Preschool , Humans , Infant , Infant, Newborn , Information Services , Patient SelectionABSTRACT
A second adenylate cyclase (cya2) gene was isolated from a Rhizobium meliloti F34 gene bank. Complemented E. coli delta cya mutants were capable of utilizing a number of, but not all, carbon sources known to be regulated by cAMP. DNA hybridization studies showed cya2 to be unique to R. meliloti strains. The cya2 nucleotide sequence was determined and found to encode a protein of 363 amino acids. Residues were identified within the C-terminal domain which are conserved in both eukaryotic adenylate and guanylate cyclases, including a putative ATP binding site. Similar residues were also found in the prokaryotic R. meliloti Cya1 protein. A R. meliloti cya1/cya2 double mutant was constructed and characterized; however, cAMP production was still observed in this strain indicating the presence of a third cya gene.
