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Related Concept Videos

Skeletal Muscle Relaxants: Therapeutic Uses01:31

Skeletal Muscle Relaxants: Therapeutic Uses

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 as...
Nondepolarizing (Competitive) Neuromuscular Blockers: Pharmacological Actions01:27

Nondepolarizing (Competitive) Neuromuscular Blockers: Pharmacological Actions

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...
Neuromuscular Junction And Blockade01:29

Neuromuscular Junction And Blockade

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...
Skeletal Muscle Relaxants: Adverse Effects01:21

Skeletal Muscle Relaxants: Adverse Effects

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...
Nondepolarizing (Competitive) Neuromuscular Blockers: Mechanism of Action01:17

Nondepolarizing (Competitive) Neuromuscular Blockers: Mechanism of Action

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...
General Anesthesia: Overview01:24

General Anesthesia: Overview

Anesthesia is a medical procedure that uses drugs for CNS suppression to enable painless surgeries and procedures. The selection of anesthetics is influenced by their pharmacokinetic properties, side effects, and patient characteristics. Various types of anesthesia include general, local, regional, spinal, and inhalational.
General anesthesia induces unconsciousness in the whole body, while the others target specific areas or sensations. It is administered to minimize adverse effects, maintain...

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Stimulated Single Fiber Electromyography (SFEMG) for Assessing Neuromuscular Junction Transmission in Rodent Models
04:30

Stimulated Single Fiber Electromyography (SFEMG) for Assessing Neuromuscular Junction Transmission in Rodent Models

Published on: March 8, 2024

Neuromuscular disease and anesthesia.

Alan Romero1, Girish P Joshi

  • 1University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas, 75390-9068, USA.

Muscle & Nerve
|February 21, 2013
PubMed
Summary

Anesthetic management for patients with neuromuscular disease requires careful planning and interdisciplinary communication to mitigate risks like respiratory dysfunction and aspiration. Special precautions are vital for safe perioperative care.

Keywords:
anesthetic managementmalignant hyperthermiamuscle relaxantsneuromuscular diseaseperioperative complications

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Laminectomy and Spinal Cord Window Implantation in the Mouse
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Stimulated Single Fiber Electromyography (SFEMG) for Assessing Neuromuscular Junction Transmission in Rodent Models
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Laminectomy and Spinal Cord Window Implantation in the Mouse

Published on: October 23, 2019

Area of Science:

  • Anesthesiology
  • Neurology

Background:

  • Patients with neuromuscular diseases (NMDs) present significant anesthetic challenges.
  • They face elevated risks of perioperative complications, including respiratory/cardiovascular dysfunction and pulmonary aspiration.

Purpose of the Study:

  • To outline critical anesthetic considerations for patients with NMDs.
  • To emphasize the importance of interdisciplinary communication and tailored anesthetic strategies.

Main Methods:

  • Review of anesthetic implications for patients with NMDs.
  • Highlighting risks associated with neuromuscular blocking agents, reversal agents, and other medications.
  • Emphasizing the need for objective neuromuscular monitoring and avoidance of triggering agents for malignant hyperthermia.

Main Results:

  • NMD patients may exhibit adverse responses to neuromuscular blocking drugs and reversal agents.
  • Sensitivity to sedative-hypnotics and opioids necessitates judicious use.
  • Certain NMDs carry a risk of malignant hyperthermia, requiring avoidance of specific anesthetic agents.

Conclusions:

  • Special precautions and interdisciplinary communication are essential for managing patients with NMDs.
  • Careful preoperative evaluation, cautious drug titration, and close postoperative monitoring are critical.
  • Tailored anesthetic plans are necessary to minimize perioperative morbidity in this population.