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Related Concept Videos

Skeletal Muscle Relaxants: Therapeutic Uses01:31

Skeletal Muscle Relaxants: Therapeutic Uses

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Skeletal muscle relaxants are used to relax muscle tone and alleviate painful muscle contractions. However, the choice of skeletal muscle relaxants depends on the duration of the surgical procedure in order to minimize potential side effects. Skeletal muscle relaxants like neuromuscular blocking agents [NMBAs] are commonly employed as adjuvants alongside general anesthetics in clinical settings. NMBAs are also used to maintain controlled ventilation during surgery of the larynx or pharynx...
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Skeletal Muscle Relaxants: Adverse Effects01:21

Skeletal Muscle Relaxants: Adverse Effects

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Skeletal muscle relaxants are widely used for muscle paralysis and relieving pain following any muscle injury or stiffness. However, depending on the drug type, they can have adverse effects that range from mild to severe. Usually, nondepolarizing neuromuscular blockers have minimal side effects. For example, drugs like d-tubocurarine, cisatracurium, and rocuronium cause hypotension, whereas drugs like baclofen, when stopped abruptly, can lead to the recurrence of spastic conditions.
Unlike...
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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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Nondepolarizing (Competitive) Neuromuscular Blockers: Pharmacological Actions01:27

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Nondepolarizing neuromuscular blockers prevent the membrane depolarization of muscle cells and inhibit muscle contraction. These are usually administered with anesthetics to achieve complete muscle relaxation. Upon administration, these drugs first block the small, rapidly contracting muscles of the face and hands, followed by the larger muscles of the trunk and the intercostal muscles. The diaphragm is the last muscle to be affected.
Although all competitive neuromuscular blockers are designed...
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Neuromuscular Junction And Blockade01:29

Neuromuscular Junction And Blockade

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The site of chemical communication between a motor neuron and a muscle fiber is called the neuromuscular junction (NMJ). The end of the motor neuron at the NMJ divides into a cluster of synaptic end bulbs. The cytoplasm of these bulbs consists of synaptic vesicles enclosing acetylcholine molecules, the principal neurotransmitter released at the NMJ. The region opposite the synaptic bulb that ends in the muscle fiber is called the motor end plate, which has acetylcholine receptors. Within the...
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Nondepolarizing (Competitive) Neuromuscular Blockers: Mechanism of Action01:17

Nondepolarizing (Competitive) Neuromuscular Blockers: Mechanism of Action

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Nondepolarizing neuromuscular blockers induce paralysis by competitively blocking nicotinic acetylcholine receptors at the muscle end plate. Examples include pancuronium, mivacurium, vecuronium, and rocuronium. These quaternary ammonium derivatives are administered intravenously, are poorly absorbed, and are excreted via the kidneys.
Competitive antagonists prevent acetylcholine from binding to its receptor, inhibiting membrane depolarization. Without conformational changes or intrinsic...
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Related Experiment Video

Updated: Feb 26, 2026

Manual Muscle Testing: A Method of Measuring Extremity Muscle Strength Applied to Critically Ill Patients
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Neuromuscular problems in the ICU.

Maxwell S Damian1, Ravi Srinivasan

  • 1aNeurology and Neurointensive Care, Cambridge University Hospitals and Ipswich Hospital, Cambridge bNeurology and Intensive Care, St.Georges Hospital, University of London, Blackshaw Road, London, UK.

Current Opinion in Neurology
|July 13, 2017
PubMed
Summary
This summary is machine-generated.

Neuromuscular specialists play a crucial role in managing patients with acute life-threatening neuromuscular disease in the intensive care unit (ICU). Effective management requires specific skills and evidence-based algorithms for optimal patient outcomes.

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Area of Science:

  • Neurology
  • Intensive Care Medicine
  • Respiratory Medicine

Background:

  • Acute neuromuscular diseases present unique challenges in the intensive care unit (ICU) setting.
  • Effective management necessitates close collaboration between neuromuscular and intensive care specialists.
  • Neurologists in the ICU require specialized skills for optimal patient guidance.

Purpose of the Study:

  • To review critical neuromuscular conditions managed in the ICU.
  • To provide a practical approach to patient management for ICU neurologists.
  • To highlight the importance of specialized neuromuscular care in critical illness.

Main Methods:

  • Review of recent research on neuromuscular failure in critical care.
  • Analysis of factors influencing outcomes in ICU patients with neuromuscular disease.
  • Discussion of evidence-based monitoring and treatment algorithms.

Main Results:

  • Improved understanding of acute neuromuscular failure's impact on respiration.
  • Enhanced knowledge of neuromuscular disease categories within the ICU.
  • Better comprehension of ICU treatment pitfalls and risks.
  • Development of evidence-based algorithms for patient care.

Conclusions:

  • Effective treatment of acute neuromuscular disease in the ICU can lead to very good outcomes.
  • Advances in research enhance the role and capabilities of neuromuscular specialists in acute care.
  • Adherence to best practice principles is essential for optimal patient management.