A patient with a diagnosis of myasthenia gravis has required…

A patient with a diagnosis of myasthenia gravis has required a mastectomy for the treatment of breast cancer. The surgery was deemed a success, but the client has gone into a myasthenic crisis on postoperative day 1. Which of the following measures should the care team prioritize in this patients immediate care. (Basically – since this could be interpreted as a treatment question – I’m asking you, What is the most concerning manifestation of myasthenia crisis?)