12 results
Myasthenia Gravis Overview

Myasthenia Gravis is an autoimmune disorder of the postsynaptic neuromuscular junction.  Ab to
Myasthenia Gravis ... the postsynaptic neuromuscular ... chewing, loss of smile ... Limb- proximal weakness ... immunologic assay - MuSK
Causes of Peripheral Weakness without Sensory Changes - Differential Diagnosis Algorithm
No Objective Weakness
 • Cardio-pulmonary disease
Cardio-pulmonary ... Muscular Atrophy Neuromuscular ... Oculomotor • Myasthenia ... Gravis • Lambert-Eaton ... Myasthenic Syndrome
Causes of Neuromuscular Weakness
 • Spinal Cord: Demyelinating Disease (MS), Epidural abscess, Infarction, Syringomyelia, Tetanus, Transverse
Weakness • Spinal ... Demyelinating Disease (MS ... Eaton Syndrome, Myasthenia ... Gravis, Organophosphate ... #Weakness #Causes
Ocular Myasthenia Gravis on Physical Exam

A 41yo female was referred by her neurologist for double vision.
Gravis on Physical ... non-localized EOM weakness ... Myasthenia gravis ... tumor, and always ask ... #clinical #video
Drugs associated with worsening of Myasthenia Gravis (MG):
•	D-penicillamine 
•	Botulinum toxin.
•	Telithromycin
•	Fluoroquinolones 
•	Quinine
•	Magnesium
•	Macrolide antibiotics 
•	Corticosteroids (may cause transient
with worsening of Myasthenia ... Gravis (MG): • ... Patients with MuSK-MG ... higher risk of myasthenic ... because of bulbar weakness
Myasthenia Gravis - Summary
 • an autoimmune disease of the postsynaptic neuromuscular junction associated with antibodies
Myasthenia Gravis ... the postsynaptic neuromuscular ... or respiratory weakness ... or generalized weakness ... #Gravis #diagnosis
Ptosis - Differential Diagnosis Framework

Ptosis (Greek- to fall) Drooping of the upper eyelid that usually results
Myasthenia gravis ... affecting the muscle, neuromuscular ... to ptosis and weakness ... gravis • Botulinum ... gravis • Ocular
Summary of actions of some Cholinergic Agonists

Bethanechol 
• Used in treatment of urinary retention 
• Binds
Reverses CNS and cardiac ... In treatment of myasthenia ... gravis • Used ... for diagnosis of myasthenia ... gravis • Used
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
: • Non-neuromuscular ... disorder (Cardiac ... Neuromuscular Junction ... Postsynaptic: Myasthenia ... Gravis - Lack
Causes of Hypotonic Infant (Floppy Newborn) - Differential Diagnosis Algorithm
Central Nervous System - Decreased LOC, Axial
Decreased LOC, Axial Weakness ... Profound Peripheral Weakness ... Degeneration - Neuromuscular ... and Transient Myasthenia ... Gravis