“…Another etiology could be strangulation of the proximal end of the balloon in the sheath by a mobile calcium remnant. 17 A kink in the balloon catheter or hypotube while traversing the lesion can also lead to air locking in the balloon, persistent inflation, and, subsequently, balloon entrapment. 17 The presence of a calcified, distal lesion could also prevent withdrawal of the balloon catheter.…”