Most reliable sign of injury to intrathoracic aorta is -
Ans. is 'c' i.e., Obliteration of aortic knob contour * Several findings on the chest X ray are associated with the blunt injury to the intrathoracic great vessels.* The most reliable of these signs for the blunt aortic injury is loss of the aortic knob contour.Finding on Chest X-Ray Associated with Blunt Aortic InjuryPresence of widened mediastinum (> 8 cm at the aortic knob in adults)Deviation of the trachea, nasogastric tube, or endotracheal tube to the rightPresence of an apical cap of pleural fluidDepression of the left mainstem brochus > 140deg from trachea Obliteration of aortic knob contour"Funny" looking mediastinum
Presence of apical cap of pleural fluid
Depression of left main stem bronchous
Obliteration of aortic knob contour
Funny looking mediastenum
Arterial Disorders