S3_L1: Neuromuscular Diseases part 1 Flashcards
What is the most commonly encountered genetic
pediatric neuromuscular condition?
Duchenne muscular dystrophy (DMD)
Second commonest form of CMT
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
E. Charcot Marie Tooth Type X
Inheritance: autosomal recessive
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
D. Charcot Marie Tooth Type 4
Inheritance: autosomal dominant; referred to as the axonal CMT.
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
B. Charcot Marie Tooth Type 2
Also known as Dejerine-Sottas disease. Inheritance is either dominant or recessive.
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
C. Charcot Marie Tooth Type 3
More severe demyelinating neuropathy than CMT 1 (Most severe than type 1).
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
C. Charcot Marie Tooth Type 3
Most common form of CMT; Inherited autosomal dominant
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
A. Charcot Marie Tooth Type 1
Begins in infancy and infants have severe muscle atrophy, weakness
delayed motor skills development, sensory problems, and scoliosis (a side effect upon growth).
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
C. Charcot Marie Tooth Type 3
A rare type of CMT with a pathology of demyelinating and axonal degeneration and motor neuropathies.
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
D. Charcot Marie Tooth Type 4
Note: type 4 is the combination of type 1 & 2
Type of CMT that develop symptoms of leg weakness in childhood and by adolescence they may not be able to
walk.
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
D. Charcot Marie Tooth Type 4
Affects men more severely than
women. In males, it is present in the first decade of life, though their lifespan is usually normal.
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
E. Charcot Marie Tooth Type X
Accounts for 10 to 15% of all CMT cases. The mother is the carrier which affects males.
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
E. Charcot Marie Tooth Type X
X-linked, signs and symptoms are muscle weakness mostly in the feet, atrophy, and change in sensation
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
E. Charcot Marie Tooth Type X
Directly damages the peripheral nerve axon, resulting in axonal degeneration.
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
B. Charcot Marie Tooth Type 2
Onset of this type is between 10 to 20 years old
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
B. Charcot Marie Tooth Type 2
Characterized by a slow progression with manifestations of muscle weakness starting in the feet, atrophy/wasting, hammer toe, pes cavus, and a decrease in sensation. Individuals may have vocal cord or phrenic nerve involvement causing speech or breathing problems.
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
B. Charcot Marie Tooth Type 2
Note: vocal cord or phrenic nerve is not affected in type 1
Normal life expectancy and remain ambulatory with AD
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
A. Charcot Marie Tooth Type 1
Onset is the first or second decade of life and usually more severe form of CMT. Symptoms start in childhood starting with distal areas (i.e., most commonly in the feet; lower part of legs, hands, and forearm).
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
A. Charcot Marie Tooth Type 1
Pathology is damage of the myelin sheath, so it is also known as demyelinating CMT
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
A. Charcot Marie Tooth Type 1
Require orthotics for ankle support
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
A. Charcot Marie Tooth Type 1
Characterized by slow progression with manifestations of muscle weakness and atrophy, a loss of coordination, balance and proprioception, hammer toes, pes cavus, and paresthesia (change in sensation.) Individuals are slow runners in childhood.
A. Charcot Marie Tooth Type 1
B. Charcot Marie Tooth Type 2
C. Charcot Marie Tooth Type 3
D. Charcot Marie Tooth Type 4
E. Charcot Marie Tooth Type X
A. Charcot Marie Tooth Type 1
Charcot Marie Tooth Type 1 disease mostly affects which chromosome?
Chromosome 17
Individuals may present with involvement of facial and bulbar muscles, resulting in (B) facial weakness. Other signs and symptoms include the inability to swallow or speak, a loss of DTRs, and respiratory complications.
A. Regional GBS Syndrome
B. Acute Motor Axonal Neuropathy (AMAN)
C. Acute Motor-Sensory Axonal Neuropathy (AMSAN)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
A. Regional GBS Syndrome
Miller Fisher variant of GBS; one body part is affected and this type is associated with problems in the
head/face.
A. Regional GBS Syndrome
B. Acute Motor Axonal Neuropathy (AMAN)
C. Acute Motor-Sensory Axonal Neuropathy (AMSAN)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
A. Regional GBS Syndrome
Historically known as the Chinese paralytic syndrome
A. Regional GBS Syndrome
B. Acute Motor Axonal Neuropathy (AMAN)
C. Acute Motor-Sensory Axonal Neuropathy (AMSAN)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
B. Acute Motor Axonal Neuropathy (AMAN)
Aggressive type with rapid symptoms. It causes total paralysis of all 4 limbs in less than 1 week and severe muscle wasting.
A. Regional GBS Syndrome
B. Acute Motor Axonal Neuropathy (AMAN)
C. Acute Motor-Sensory Axonal Neuropathy (AMSAN)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
C. Acute Motor-Sensory Axonal Neuropathy (AMSAN)
Damages axons directly; accounts for 4.7% of cases.
A. Regional GBS Syndrome
B. Acute Motor Axonal Neuropathy (AMAN)
C. Acute Motor-Sensory Axonal Neuropathy (AMSAN)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
C. Acute Motor-Sensory Axonal Neuropathy (AMSAN)
Manifests with weakness of lower arms and LE with no
numbness and sensory problems. Recovery is fast and complete, presenting with a good prognosis.
A. Regional GBS Syndrome
B. Acute Motor Axonal Neuropathy (AMAN)
C. Acute Motor-Sensory Axonal Neuropathy (AMSAN)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
B. Acute Motor Axonal Neuropathy (AMAN)
Attacks glial cells (producing myelin) surrounding the axons
A. Regional GBS Syndrome
B. Acute Motor Axonal Neuropathy (AMAN)
C. Acute Motor-Sensory Axonal Neuropathy (AMSAN)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
Most common form of GBS
A. Regional GBS Syndrome
B. Acute Motor Axonal Neuropathy (AMAN)
C. Acute Motor-Sensory Axonal Neuropathy (AMSAN)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
Symptoms start as sensory changes then weakness starts from the toes and fingertips spreading
upwards. Symptoms are symmetrical and individuals also present with areflexia.
A. Regional GBS Syndrome
B. Acute Motor Axonal Neuropathy (AMAN)
C. Acute Motor-Sensory Axonal Neuropathy (AMSAN)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
Causes a high protein level in the CSF
A. Regional GBS Syndrome
B. Acute Motor Axonal Neuropathy (AMAN)
C. Acute Motor-Sensory Axonal Neuropathy (AMSAN)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
D. Acute Inflammatory Demyelinating Polyradiculoneuropathy (AIDP)
Triad of Miller Fisher Syndrome
ophthalmoplegia, ataxia, and areflexia
Conditions affecting the peripheral nerve
- S/sx: high-stepped gait with frequent tripping or
falling - Most common cause of progressive flaccid
paralysis (symmetrical weakness) - Hereditary motor and sensory neuropathy
(HMSN) - S/sx: finger dysesthesia
A. Charcot Marie Tooth Disease
B. Guillain Barre Syndrome
- A
- B
- A
- B
Most common inherited progressive peripheral neuropathy
Charcot Marie Tooth Disease
Neuromuscular diseases comprises a spectrum of diseases with onset in childhood and where the primary area of pathology or lesion is in the peripheral nervous system or _____.
motor unit
Most common symptom in neuromuscular diseases
Weakness
TRUE OR FALSE: Symptoms of diseases affecting the peripheral nervous system / motor unit are hypotonia, flaccidity, fasciculations, atrophy, hypo-/areflexia, & (-) Babinski.
True
TRUE OR FALSE: Duchenne muscular dystrophy (DMD) is a primary muscle disease that affects males and is an x-linked condition, with an estimated prevalence of approximately 1:5,000 boys.
True
- multi‐systematic disorder with a significant muscle component
- neuronopathy affecting the anterior horn cell
- disease of the peripheral nerve
A. Spinal muscular atrophy
B. Myotonic dystrophy
C. Charcot Marie Tooth disease
- B
- A
- C
TRUE OR FALSE: It is important to always take Prenatal and Perinatal History as symptoms of neuromuscular diseases start during pregnancy and mothers often feels
these.
True
Neuromuscular Diseases
- ↓ Apgar score
- Fetal distress, respiratory difficulty, need for
resuscitation or ventilation - ↓ Quality of fetal movement or pregnancy
complications - Difficulty sucking
- Hypotonia
A. In prenatal history
B. In perinatal history
- B
- B
- A
- B
- B
Acquired group of autoimmune
polyneuropathy, involving sensory, motor, and
autonomic nerves
Guillain Barre Syndrome
Acquired disorder that usually follows an infection or a vaccination (from injection, 2-3 wks after, sx
occurs). It is usually seen in Johnson & Johnson vaccine
Guillain Barre Syndrome
The cause of this syndrome is due to temporary inflammation and demyelination of peripheral nerves myelin sheaths resulting in axonal degeneration
Guillain Barre Syndrome
It is preceded/triggered by upper respiratory or gastrointestinal tract infections or diarrhea one to three weeks prior to their
onset. Other predisposing factors include recent
surgery, lymphoma, and systemic lupus erythematosus (SLE).
Guillain Barre Syndrome