Evaluate for complications of<unk>  or other treatable causes of progressive weakness
CBC
Evaluate for anemia/infection
CPK
Elevation associated with myopathy
BMP
Electrolyte abnormalities (hypercalcemia, hypokalemia, etc.) can cause weakness
UA
Evaluate for source of infection
ABG
Helps identify respiratory failure
Evaluate for anemia/infection
Elevation associated with myopathy
Electrolyte abnormalities (hypercalcemia, hypokalemia, etc.) can cause weakness
Evaluate for source of infection
Helps identify respiratory failure
CXR
May identify aspiration, pneumonia, or other comorbid conditions
May identify aspiration, pneumonia, or other comorbid conditions
FVC
Sensitive indicator of respiratory muscle weakness
FVC <50% typically requires ventilatory support
Sensitive indicator of respiratory muscle weakness
FVC <50% typically requires ventilatory support
Amyotrophic lateral sclerosis
Neuromuscular weakness
Lambert-Eaton myasthenic syndrome
Upper motor neuron:
Polymyositis
CVA
Acute flaccid myelitis
Hemorrhagic stroke