9 results
Causes of Peripheral Weakness without Sensory Changes - Differential Diagnosis Algorithm
No Objective Weakness
 • Cardio-pulmonary disease
Causes of Peripheral ... • Cardio-pulmonary ... Muscular Atrophy Neuromuscular ... Gravis • Lambert-Eaton ... Myasthenic Syndrome
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 ... crises”. ... immunologic assay - MuSK
Causes of Neuromuscular Weakness
 • Spinal Cord: Demyelinating Disease (MS), Epidural abscess, Infarction, Syringomyelia, Tetanus, Transverse
Causes of Neuromuscular ... Weakness • Spinal ... Eaton Syndrome, Myasthenia ... Gravis, Organophosphate ... #Weakness #Causes
Myasthenia Gravis - Summary
 • an autoimmune disease of the postsynaptic neuromuscular junction associated with antibodies
Myasthenia Gravis ... the postsynaptic neuromuscular ... likely to cause ... glucocorticoids - can cause ... #Gravis #diagnosis
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): • ... Corticosteroids (may cause ... higher risk of myasthenic ... because of bulbar weakness
Ocular Myasthenia Gravis on Physical Exam

A 41yo female was referred by her neurologist for double vision.
Ocular Myasthenia ... non-localized EOM weakness ... Myasthenia gravis ... tumor, and always ask ... #clinical #video
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
: • Non-neuromuscular ... disorder (Cardiac ... Neuromuscular Junction ... Postsynaptic: Myasthenia ... Gravis - Lack
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Acetazolamide Causes ... - Salicylates Causes ... narcotics, CVA) - Neuromuscular ... weakness (GBS, ... Myasthenia gravis
Causes of Hypotonic Infant (Floppy Newborn) - Differential Diagnosis Algorithm
Central Nervous System - Decreased LOC, Axial
Causes of Hypotonic ... Decreased LOC, Axial Weakness ... Degeneration - Neuromuscular ... and Transient Myasthenia ... Gravis