Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient has been extubated . Low lung volumes . There are sternotomy wires that appear intact and in appropriate alignment . There is a right IJ with the tip in the low SVC . Stable enlargement of the cardiac silhouette . Given the changes in inspiration , the lungs appear unchanged .
    OUTPUT:
    
1 . Right IJ with tip in the low SVC . 2 . Status post extubation with low lung volumes , but otherwise unchanged .