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Related Concept Videos

Depolarizing Blockers: Pharmocokinetics01:19

Depolarizing Blockers: Pharmocokinetics

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Depolarizing blockers are administered through intravenous injection. Succinylcholine is the most common choice of depolarizing blockers in emergency clinical practices. Although they have a rapid onset, they readily diffuse away from the motor end plate into the extracellular fluid. They are metabolized by enzymes such as liver butyrylcholinesterase and plasma pseudocholinesterases. This produces a short duration of action, typically 5-10 minutes long, unlike nondepolarizing blockers, which...
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Depolarizing Blockers: Mechanism of Action01:28

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Depolarizing blockers act on skeletal muscle fibers' membranes and induce their depolarization. Most depolarizing blockers have two quaternary N+ atoms that bind the nicotinic acetylcholine receptors and cause neuromuscular blockade within minutes.
Succinylcholine is the most commonly used depolarizing blocker. Chemically, it constitutes two molecules of acetylcholine joined together by an acetate methyl group. They act on the receptors in the same way as acetylcholine. Because...
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Skeletal Muscle Relaxants: Adverse Effects01:21

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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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Skeletal Muscle Relaxants: Therapeutic Uses01:31

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

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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.
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Cardiopulmonary Resuscitation V: Advanced Airway Management Techniques01:30

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Airway management is essential in emergency and surgical medicine, ensuring ventilation and oxygenation in patients who cannot maintain their own airway. Clinicians use a range of techniques and devices to secure the airway, depending on the patient’s condition and the clinical context. Key methods include endotracheal intubation, rapid sequence intubation (RSI), supraglottic airway devices, and advanced visualization aids. In cases where these approaches fail, surgical airway...
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Endotracheal Intubation Using a Flexible Intubation Endoscope as a Standardized Model for Safe Airway Management in Swine
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Rocuronium vs. succinylcholine for rapid sequence intubation: a Cochrane systematic review.

D T T Tran1,2, E K Newton1, V A H Mount3

  • 1Division of Cardiac Anesthesiology, Department of Anesthesiology and Pain Medicine, School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa Heart Institute, Ottawa.

Anaesthesia
|June 28, 2017
PubMed
Summary
This summary is machine-generated.

Succinylcholine provides superior intubating conditions compared to rocuronium during rapid sequence intubation. This systematic review found succinylcholine more effective for both excellent and acceptable tracheal intubation, though evidence quality is moderate.

Keywords:
laryngoscopic viewmuscle relaxation

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Area of Science:

  • Anesthesiology
  • Critical Care Medicine
  • Pharmacology

Background:

  • Rapid sequence intubation (RSI) is a critical procedure for airway management.
  • Choosing the appropriate neuromuscular blocking agent is crucial for successful RSI.
  • Rocuronium and succinylcholine are commonly used agents, each with distinct characteristics.

Purpose of the Study:

  • To systematically review and compare the efficacy of rocuronium versus succinylcholine in achieving optimal intubating conditions during RSI.
  • To evaluate the quality of evidence supporting the use of these agents in RSI.

Main Methods:

  • Systematic review of randomized controlled trials and controlled clinical trials.
  • Searched major databases including Cochrane CENTRAL, MEDLINE, and EMBASE.
  • Included studies comparing rocuronium (≥0.6 mg/kg) and succinylcholine (≥1 mg/kg) for RSI, analyzing data from 50 studies with 4151 participants.

Main Results:

  • Succinylcholine demonstrated superiority over rocuronium in achieving excellent intubating conditions (RR 0.86; 95% CI 0.81-0.92) and clinically acceptable conditions (RR 0.97; 95% CI 0.95-0.99).
  • The advantage of succinylcholine was more pronounced when thiopental was used as the induction agent.
  • Moderate quality of evidence due to detection bias and significant heterogeneity.

Conclusions:

  • Succinylcholine remains a more effective agent than rocuronium for establishing optimal intubating conditions during rapid sequence intubation.
  • Clinicians should consider the evidence and potential biases when selecting neuromuscular blocking agents for RSI.
  • Further high-quality research may be needed to clarify optimal agent selection in specific patient populations or clinical scenarios.