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Related Experiment Videos

Comparative cutaneous histamine release by neuromuscular blocking agents.

D C Galletly

    Anaesthesia and Intensive Care
    |November 1, 1986
    PubMed
    Summary

    This study determined histamine release from skin by neuromuscular blocking drugs. Atracurium and d-tubocurarine released significantly more histamine than vecuronium or suxamethonium.

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    Area of Science:

    • Pharmacology
    • Anesthesiology
    • Histamine Biology

    Background:

    • Neuromuscular blocking drugs are essential in anesthesia.
    • Some neuromuscular blocking drugs can cause histamine release, leading to side effects.
    • Understanding the histamine-releasing potential of these drugs is crucial for patient safety.

    Purpose of the Study:

    • To quantify and compare the histamine-releasing potential of six different neuromuscular blocking drugs.
    • To establish normal values for cutaneous wheal diameter after intradermal injection of these drugs.
    • To investigate potential variations in the mechanism of histamine release.

    Main Methods:

    • Intradermal injections of six neuromuscular blocking drugs were administered.
    • Cutaneous wheal diameters were measured to determine normal values.
    • Dose-response relationships were calculated to derive relative histamine-releasing abilities.

    Main Results:

    • Significant variations in histamine release were observed among the drugs.
    • Relative histamine-releasing abilities compared to pancuronium (=1) were: vecuronium 1.1, suxamethonium 1.7, alcuronium 5, atracurium 52, and d-tubocurarine 172.
    • A significant difference (P < 0.001) in dose-response slopes suggested varied histamine release mechanisms.

    Conclusions:

    • Neuromuscular blocking drugs exhibit a wide range of histamine-releasing potentials.
    • Atracurium and d-tubocurarine are potent histamine releasers compared to others studied.
    • The varying dose-response slopes indicate potential differences in the underlying mechanisms of histamine release by these drugs.

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