<prompt> Babu ram 45 years male who sustained a A is stabilized according to ATLS protocols taken to emergency ward and managed by an intern and gets the X-ray done which reveals fracture in shaft of femur S.O.F. Patient is stabilized and supplied with O2 shifted to ward. After 4 hours of injury patient suffers from breathlessness PaO2 56 mmHg, Then the patient is shifted to ICU; ABG done and supplemented with O2. What do you expect?ARDSCardiac arrestAcute bronchial asthmaFat embolism syndrome  <response>: Even though all the above-mentioned clinical features suggest fat embolism syndrome. It takes at least 48 hours for thromboembolic phenomena to occur Hence, it is not a Fatty embolism So fracture in S.O.F, Breathlessness, Pao2 60mmHg - all points to ARDS by eliminating other option Fat embolism syndrome: FAT EMBOLISM after fracture S.O.F Mn- Fracture femur shaft foy-eight hours Fat embolism Diagnostic criteria for fat embolism-Gurds Criteria 