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[Mivacurium in pediatric anesthesia]

V R Hofmockel1, B Pohl, G Benad

  • 1Aus der Klinik und Poliklinik für Anästhesiologie und Intensivtherapie der Universität Rostock.

Anaesthesiologie Und Reanimation
|January 1, 1996
PubMed
Summary

Mivacurium is a short-acting muscle relaxant with a unique clinical duration, offering rapid intubation in adults and faster onset in infants. It shows no cumulative effects and can be reversed with neostigmine or edrophonium.

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Area of Science:

  • Anesthesiology
  • Pharmacology
  • Neuromuscular Pharmacology

Background:

  • Mivacurium is a benzylisoquinoline-series, short-acting, nondepolarizing neuromuscular relaxant.
  • Its unique pharmacokinetic and pharmacodynamic profile distinguishes it from other available neuromuscular blocking agents.

Purpose of the Study:

  • To describe the clinical characteristics of mivacurium, including onset time, duration, and recovery.
  • To compare mivacurium's effects in adults and infants.
  • To evaluate the impact of pseudocholinesterase activity and administration techniques on mivacurium's effects.

Main Methods:

  • Review of mivacurium's pharmacological properties and clinical data.
  • Comparison of onset time and clinical duration in adults and infants.
  • Assessment of cumulative effects, dose-response relationship, and antagonism.
  • Evaluation of side effects, including histamine release and impact of pseudocholinesterase variants.

Main Results:

  • Mivacurium facilitates endotracheal intubation in adults within 2-2.5 minutes at a 2x ED95 dose.
  • Onset time is similar to vecuronium and atracurium, but clinical duration is unique and shorter in infants than adults.
  • No cumulative effect observed with repeated doses or infusion; dose escalation minimally impacts duration and recovery index.
  • Neuromuscular block is readily antagonized by neostigmine or edrophonium.
  • Atypical pseudocholinesterase significantly prolongs clinical duration.
  • Histamine release-related side effects are rare with slow injection and appropriate dosing.

Conclusions:

  • Mivacurium offers a favorable profile for short-acting neuromuscular blockade.
  • Its predictable recovery and lack of cumulative effects are advantageous.
  • Careful administration and consideration of patient pseudocholinesterase status are important for optimal use.

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