Cause of Sleep apnea (459/1700)

459. A 56yo man has symptoms of sleep apnea and daytime headaches and somnolence. Spirometry
shows a decreased tidal volume and vital capacity. What is the single most appropriate dx?
a. Ankylosing spondylitis
b. Churg-strauss syndrome
c. Good pasture syndrome
d. Motor neuron disease
e. Progressive massive fibrosis
f. Spinal cord compression




























answer: D
Sleep apnea due to respiratory muscle weakness, the cause of death in MND is the eventual respiratory muscle paralysis that ensues

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