Chest Injuries Battle score: Risk factor Points Age 1 for each decade no. of rib fractures 3 per fracture Chronic Lung disease 5 pre injury anticoag's?? 4 O2 sat% 2 per 5% reduction below 94% Total References include: https://www.boa.ac.uk/uploads/assets/bc48ebe8-f7a2-43ee-9696a7679c664b9c/Rib-fracture-management-in-the-older-adult.pdf