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Related Experiment Videos

[Etomidate perfusion in neurosurgery].

S Fernández Galinski1, E Barrera, J L de Córdoba

  • 1Servicios de Anestesiología y Reanimación y de Análisis Clínicos, Hospital del Mar, Unidad Docente de la Universidad Autónoma, Barcelona.

Revista Espanola De Anestesiologia Y Reanimacion
|March 1, 1990
PubMed
Summary
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A 20 mcg/kg/min etomidate infusion provides adequate neuroanesthesia for posterior fossa and spine surgeries when nitrous oxide is contraindicated. Lower infusion rates may lead to insufficient hypnosis and sympathetic responses.

Area of Science:

  • Anesthesiology
  • Neurosurgery
  • Endocrinology

Context:

  • Neurosurgical operations on the posterior fossa, cervical, and dorsolumbar spine require careful anesthetic management.
  • Nitrous oxide is often avoided in neurosurgery due to potential adverse effects.
  • Etomidate is an anesthetic agent with potential endocrine effects.

Purpose:

  • To evaluate the efficacy and safety of different continuous infusion rates of etomidate for neuroanesthesia.
  • To assess the impact of etomidate infusion on hypnosis quality, cortisol levels, hemodynamics, and electrolytes.
  • To determine an adequate etomidate infusion rate for neuroanesthesia when nitrous oxide is contraindicated.

Summary:

  • Twenty patients undergoing neurosurgery received etomidate induction and continuous infusion at 10 mcg/kg/min (Group I) or 20 mcg/kg/min (Group II).

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  • Hypnosis quality, cortisol, glucose, and electrolytes were monitored perioperatively and postoperatively. Group II showed adequate hypnosis, while Group I exhibited sympathetic responses.
  • Both groups had suppressed cortisol post-infusion, with Group II showing a dose-dependent recovery. Glucose levels increased, and electrolytes remained stable.

    • Impact:

    • A continuous infusion of 20 mcg/kg/min etomidate is effective for maintaining neuroanesthesia in procedures where nitrous oxide is contraindicated.
    • This finding supports the use of etomidate in specific neurosurgical contexts, optimizing anesthetic delivery.
    • Understanding etomidate's impact on endocrine function and hemodynamics is crucial for patient management during and after neurosurgery.