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[Electromyographic response to precurarization with vecuronium bromide]

P López-Vidaur1, A Seiz, C A de la Cruz

  • 1Servicio de Anestesiología, Hospital Príncipe de Asturias, Madrid.

Revista Espanola De Anestesiologia Y Reanimacion
|February 1, 1995
PubMed
Summary

Precurarization with vecuronium bromide effectively reduces succinylcholine-induced fasciculations and ensures excellent intubation conditions, despite variable electromyographic responses in patients.

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Area of Science:

  • Anesthesiology
  • Neuromuscular Pharmacology

Background:

  • Precurarization is a technique used to mitigate adverse effects of muscle relaxants.
  • Succinylcholine is commonly used for rapid sequence intubation but can cause fasciculations.

Purpose of the Study:

  • To evaluate the electromyographic response and clinical effects of vecuronium bromide as a precurarization agent.
  • To assess the impact of vecuronium on succinylcholine-induced fasciculations and intubation conditions.

Main Methods:

  • 20 patients received vecuronium bromide (0.01 mg/Kg) 5 minutes before anesthetic induction.
  • Neuromuscular transmission was monitored via electromyography.
  • Fasciculations and intubation conditions were assessed after succinylcholine administration.

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Main Results:

  • Vecuronium precurarization showed variable electromyographic responses (potentiation, diminished, fatigue, no change).
  • Clinical signs included blurred vision and heavy eyelids.
  • Fasciculations were eliminated in 95% of patients, with excellent intubation conditions.

Conclusions:

  • Vecuronium precurarization elicits varied but well-tolerated electromyographic responses.
  • It effectively prevents succinylcholine-induced fasciculations without compromising intubation conditions.