<prompt> Which of the following is life threatening?UL abductor paralysisBL abductor paralysisUL adductor paralysisBL adductor paralysis  <response>: In bilateral abductor paralysis due to BL recurrent laryngeal nerve palsy, both the cords assume a median position due to unopposed action of cricothyroid muscle. The airway is inadequate in this condition, causing dyspnea. The condition can be life threatening. 