The nurse is caring for a child admitted to the hospital for an open fracture of the femur following a motor vehicle accident. the nurse notes the following lab values: white blood cells 10,000mm3, hemoglobin 7.9 g/dl (79 g/l), hematocrit 28%, platelets 151,000 mm3. which nursing action is priority?

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine.what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.

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