Immune-Mediated Disorders: LMN And Peripheral Nerve Flashcards
What are autoimmune disorders affecting the muscular system?
Myopathies
T/f: Attack of muscle fibers can be either inherited or acquired
True
What are the inherited myopathies?
Congenital
Mitochondrial
Metabolic
Muscular dystrophy (Duchene’s and Becker’s)
What are the acquired myopathies?
Autoimmune/inflammatory myopathy
Toxic
Endocrine (thyroid, parathyroid, or adrenal)
Infections (Lyme, mono)
Electrolyte
Critical illness myopathy
Medication induced
What is mitochondrial disease myopathy?
A myopathy effecting more than just muscles, but also the heart and brain causing greater risk
What are the common s/s of myopathy?
Symmetrical proximal muscle weakness
Muscle cramps, stiffness, and spasms AT REST
Fatigue with exertion
Lack of energy
Hands and feet are spared
What are the variable s/s of myopathy?
Non-progressive or very slowly progressive
In some, muscle weakness is intermittent with periods of normal strength
In children, slow development of motor skills
Trouble with oral motor muscles for swallowing and speech
How do we diagnose and differentiate types of myopathy?
Lab values
Electromyography
MRI of muscle
Genetic testing
Muscle biopsy
What labs help us diagnose myopathy?
Muscle enzymes such as creatinine kinase (CK)
Electrolyte levels
Autoimmune disease testing
Endocrine testing
Why may CK be elevated in myopathy?
Bc of the increased muscle breakdown
T/f: electrolytes are generally off with myopathies
True
What would electromyography show with myopathies?
Normal nerve conduction and impaired EMG
What is the cardinal confirming test for myopathy?
Muscle biopsy
What should be included in the examination of myopathy.
Body chart to document location and nature of symptoms
Rating symptoms using VAS
Pattern of symptoms (changes due to weather, or time of day)
Sleep disturbance documented if the symptoms wake them
When do pts with myopathy tend to have an exacerbation of symptoms?
At the end of the day
What is a key symptom of myopathies?
Symptoms that awaken them
What is an important factor to consider in interventions with myopathies?
To avoid increasing symptoms
If there is prolonged or residual loss of strength with a myopathy following our interventions, what should we do?
Report it to the physician
If muscle pain or cramps become very uncomfortable during exercise for pts with myopathy, what should we do?
Rest until symptoms subside
If there is progressive muscle weakness or pain for pts with myopathy during a treatment program, what should we do?
Discontinue the exercise program and consult with the physician
Why are pts with myopathy at risk for rhabdomyelitis?
Bc the increased muscle breakdown effects the heart
What meds put pts at increased risk for rhabdo?
Statins
If a pt with myopathy had pepsi colored pee, what should we be concerned about?
Rhabdo
What are the problems we should work on with myopathy?
Exercise avoidance
Reduced aerobic fitness and muscle strength
Impaired ROM