<prompt> False about chest traumaECG done in all cases aw sternal fractureUnder water seal drainage if aw pneumothoraxX-ray chest investigation of choiceUrgent surgery needed in all cases  <response>: 80 of chest injuries can be managed non operatively. Chest radiograph is the initial investigation of choice.If a sucking chest wound is present,this should not be fully closed,but should be covered with a one-way valve, then an underwater drain should be placed.ECG should be done in all cases associated with sternal injuries to rule out hea damage. Reference:Bailey Loves sho practise of surgery,25th edition,page no:341 