378 results
Ocular Myasthenia Gravis on Physical Exam

A 41yo female was referred by her neurologist for double vision.
Ocular Myasthenia ... non-localized EOM weakness ... and the ice pack test ... include a Tensilon test ... PhysicalExam #clinical #video
Myasthenia Gravis Overview

Myasthenia Gravis is an autoimmune disorder of the postsynaptic neuromuscular junction.  Ab to
variable degree of weakness ... Limb- proximal weakness ... Bedside: ice pack test ... /Edrophonium test ... Severe bulbar weakness
Myasthenia Gravis
Signs, Symptoms and Testing - Likelihood Ratios
Does this patient have myasthenia gravis?
JAMA. 2005 Apr 20;293(15):1906-14.
Myasthenia Gravis ... this patient have myasthenia ... speaking - Sleep Test ... - Ice Test - ... #Diagnosis #Myasthenia
Causes of Peripheral Weakness without Sensory Changes - Differential Diagnosis Algorithm
No Objective Weakness
 • Cardio-pulmonary disease
of Peripheral Weakness ... No Objective Weakness ... Oculomotor • Myasthenia ... Lambert-Eaton Myasthenic ... #Peripheral #Weakness
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 ... prevent prolonged myasthenic ... higher risk of myasthenic ... because of bulbar weakness
Ice-pack Test for Myasthenia Gravis - Likelihood Ratio (LR) +24 / -0.16
Ice pack's can be used
Ice-pack Test for ... Myasthenia Gravis ... BostonChiefs #Icepack #Test ... #Myasthenia #Gravis
Myasthenia Gravis - Summary
 • an autoimmune disease of the postsynaptic neuromuscular junction associated with antibodies
Myasthenia Gravis ... or respiratory weakness ... mild to moderate weakness ... or generalized weakness ... and in myasthenic
Diagnosis of Myasthenia Gravis - Physical Exam Maneuvers
 • Sustained lateral gaze for seconds to elicit
Diagnosis of Myasthenia ... due to laryngeal weakness ... for neck flexor weakness ... fatigable limb weakness ... BrighamMedRes #Myasthenia
Curtain Sign - Enhanced Ptosis in Myasthenia Gravis
Because of bilateral eyelid innervation, when the more affected
Enhanced Ptosis in Myasthenia ... Enhanced #Ptosis #Myasthenia ... Gravis #clinical #video
Generalized Weakness - Differential Diagnosis Framework
"l feel weak":
 • Infectious: Influenza, EBV, PNA, Bacteremia, Sepsis
 •
Generalized Weakness ... NMJ disorder (Myasthenia ... #Generalized #Weakness