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Related Concept Videos

Myasthenia Gravis ll: Pathophysiology01:22

Myasthenia Gravis ll: Pathophysiology

The disease process of myasthenia gravis begins at the neuromuscular junction, where antibodies attack key proteins needed for muscle activation. This immune reaction weakens signal transmission, leading to the characteristic muscle fatigue and weakness that define the condition.Immune-Mediated DamageIn most individuals, antibodies target acetylcholine receptors (AChRs) on the postsynaptic membrane of muscle cells. By blocking acetylcholine binding, these antibodies prevent the nerve signal...
Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
Arboviral Encephalitis01:25

Arboviral Encephalitis

Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
Alterations in Muscle Tone lll01:11

Alterations in Muscle Tone lll

Rigidity and myotonia are distinct abnormalities of muscle tone that affect resistance and relaxation during movement. Although both involve altered muscle contraction, they arise from different neurological and muscular mechanisms.CharacteristicsRigidity is characterized by uniform resistance to passive movement across the entire range, independent of speed, affecting flexors and extensors equally. It may appear as lead-pipe rigidity (smooth, constant resistance) or cogwheel rigidity...
Myasthenia Gravis: Overview and Treatment01:20

Myasthenia Gravis: Overview and Treatment

Myasthenia gravis is a neuromuscular transmission disorder characterized by weakness and increased fatigability of skeletal muscles. It is an autoimmune disease affecting approximately one in 2000 people, where antibodies against the α1 subunit of nicotinic acetylcholine receptors are produced.
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which leads...
Myasthenia Gravis: Diagnostic Tests01:15

Myasthenia Gravis: Diagnostic Tests

Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...

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Related Experiment Video

Updated: May 8, 2026

Induction of Paralysis and Visual System Injury in Mice by T Cells Specific for Neuromyelitis Optica Autoantigen Aquaporin-4
09:29

Induction of Paralysis and Visual System Injury in Mice by T Cells Specific for Neuromyelitis Optica Autoantigen Aquaporin-4

Published on: August 21, 2017

[ICU acquired neuromyopathy].

G Gueret1, M Guillouet, V Vermeersch

  • 1Pôle anesthésie réanimations soins intensifs blocs opératoires urgences (ARSIBOU), CHRU de Brest, boulevard Tanguy-Prigent, 29200 Brest, France; Laboratoire de physiologie, faculté de médecine et des sciences de la santé, EA 1274 (mouvement, sport santé), université de Bretagne-Occidentale, 22, avenue Camille-Desmoulins, 29200 Brest, France; Université européenne de Bretagne, 5, boulevard Laennec, 35000 Rennes, France.

Annales Francaises D'Anesthesie Et De Reanimation
|August 21, 2013
PubMed
Summary
This summary is machine-generated.

ICU acquired neuromyopathy (IANM) is a common critical care issue. Early diagnosis via electrophysiology and prompt sepsis management, glycemic control, and physiotherapy can mitigate its severe neuromuscular outcomes.

Keywords:
Canaux sodiques potentiel-dépendantNeuromyopathieNeuromyopathyPhysiopathologiePhysiopathologySepsisSequelaeSéquelles

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Nerve Ultrasound Protocol to Detect Dysimmune Neuropathies
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Nerve Ultrasound Protocol to Detect Dysimmune Neuropathies

Published on: October 7, 2021

Related Experiment Videos

Last Updated: May 8, 2026

Induction of Paralysis and Visual System Injury in Mice by T Cells Specific for Neuromyelitis Optica Autoantigen Aquaporin-4
09:29

Induction of Paralysis and Visual System Injury in Mice by T Cells Specific for Neuromyelitis Optica Autoantigen Aquaporin-4

Published on: August 21, 2017

Nerve Ultrasound Protocol to Detect Dysimmune Neuropathies
08:56

Nerve Ultrasound Protocol to Detect Dysimmune Neuropathies

Published on: October 7, 2021

Area of Science:

  • Critical Care Medicine
  • Neurology
  • Intensive Care Unit (ICU) Pathophysiology

Context:

  • ICU acquired neuromyopathy (IANM) is the most prevalent neurological disorder in intensive care units.
  • It involves combined nerve and muscle deficits with neuromuscular junction dysfunction.
  • The underlying pathophysiology is intricate, potentially involving nutrient redistribution for sepsis defense.

Purpose:

  • To understand the complex physiopathology of ICU acquired neuromyopathy.
  • To identify key risk factors, including sepsis severity and duration.
  • To explore diagnostic methods, particularly electrophysiology for early detection.

Summary:

  • IANM is frequently diagnosed by challenges in mechanical ventilation weaning.
  • Electrophysiology offers a potential for earlier diagnosis.
  • Risk factors include sepsis, its severity, and duration.

Impact:

  • No definitive cure exists for IANM.
  • Early sepsis treatment, glycemic control, and physiotherapy may reduce incidence.
  • Outcomes include increased morbidity, mortality, and potential long-term neuromuscular deficits like tetraplegia.