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Related Concept Videos

Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

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The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
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Pneumonia III: Complications and Assessment01:30

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Pneumonia poses the potential for numerous complications that warrant consideration. These complications include the following:
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Myasthenia Gravis: Diagnostic Tests01:15

Myasthenia Gravis: Diagnostic Tests

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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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Myasthenia Gravis: Overview and Treatment01:20

Myasthenia Gravis: Overview and Treatment

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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.
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Acute Respiratory Failure-II01:21

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Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
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Chemical Synapses01:26

Chemical Synapses

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Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
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Related Experiment Video

Updated: Jul 5, 2025

Manual Muscle Testing: A Method of Measuring Extremity Muscle Strength Applied to Critically Ill Patients
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Intensive care unit-acquired weakness: Recent insights.

Juan Chen1, Man Huang1

  • 1Department of General Intensive Care Unit, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, Zhejiang, China.

Journal of Intensive Medicine
|January 24, 2024
PubMed
Summary

Intensive care unit-acquired weakness (ICU-AW) is a frequent complication in critically ill patients, leading to prolonged ventilation and higher mortality. This review explores its risk factors, pathophysiology, diagnosis, and treatment for future research.

Keywords:
Intensive care unit-acquired weaknessMechanismMuscle atrophyMuscle weaknessRisk factorTreatment

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Area of Science:

  • Critical Care Medicine
  • Neurology
  • Physical Medicine and Rehabilitation

Background:

  • Intensive care unit-acquired weakness (ICU-AW) is a prevalent complication in critically ill patients.
  • ICU-AW is linked to adverse outcomes such as prolonged mechanical ventilation, extended ICU stays, increased mortality (ICU, in-hospital, and 1-year), and higher healthcare costs.

Purpose of the Study:

  • To review recent advancements in understanding ICU-AW.
  • To explore risk factors, pathophysiology, diagnostic methods, and therapeutic strategies for ICU-AW.
  • To offer new perspectives for future research in ICU-AW.

Main Methods:

  • This study is a review of recent literature on ICU-AW.
  • It synthesizes information on various aspects of ICU-AW, including its epidemiology, clinical impact, and management.

Main Results:

  • Multiple risk factors contribute to ICU-AW, including advanced age, comorbidities, illness severity, organ failure, sepsis, immobilization, and mechanical ventilation.
  • The underlying pathological mechanisms of ICU-AW are complex and not fully elucidated.
  • Current understanding of diagnosis and treatment strategies is evolving.

Conclusions:

  • ICU-AW poses significant challenges in critical care settings.
  • Further research is needed to clarify the pathophysiology and optimize diagnostic and treatment approaches for ICU-AW.
  • Improved understanding and management of ICU-AW are crucial for enhancing patient outcomes.