A 45-year-old man who weighs 166 lbs (75.5 kg) and has myasthenia gravis is beginning to develop progressive weakness of the muscles. The respiratory care practitioner has been monitoring MIP and VC every 4 hours. The most recent results show that the patient continues to deteriorate despite treatment with anticholinesterase drugs: MIP = −35 cm H₂O, VC = 23 mL/kg. Which of the following would be appropriate to recommend?

Question

Quizplus · Accepted Answer

The patient's vital capacity (VC) is significantly low at 23 mL/kg, indicating severe respiratory muscle weakness. Mechanical ventilatory support is appropriate to assist with breathing and prevent respiratory failure.

A 45-Year-Old Man Who Weighs 166 Lbs (75