Bleeding, Shock and Soft-Tissue Injuries IV From Brady's First Responder (8th Edition) Progress Indicator: Question 2 of 20 2.  Where you find badly bruised skin you should: Choices: Estimate 10% loss of blood for each fist sized bruise This is only relevant if the patient is showing signs of shock Treat as though there is an underlying fracture Estimate 5% loss of blood for each fist sized bruise