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Awareness during anaesthesia. A prospective study

G Agarwal, S S Sikh

    British Journal of Anaesthesia
    |August 1, 1977
    PubMed
    Summary
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    This study found no instances of patient awareness during anesthesia when using a nitrous-oxide-oxygen technique with neuromuscular blockade. The type of premedication did not affect these results, indicating a reliable anesthesia method.

    Area of Science:

    • Anesthesiology
    • Neuroscience

    Background:

    • Intraoperative awareness is a rare but significant complication during general anesthesia.
    • Maintaining adequate depth of anesthesia is crucial to prevent awareness.

    Purpose of the Study:

    • To evaluate the incidence of intraoperative awareness in patients undergoing anesthesia with a nitrous-oxide-oxygen technique and neuromuscular blockade.
    • To determine if premedication influences the occurrence of awareness.

    Main Methods:

    • A cohort of 138 patients received anesthesia using a nitrous-oxide-oxygen technique combined with neuromuscular blockade.
    • Standard monitoring and anesthetic conditions were maintained throughout the procedures.
    • Patients were assessed post-operatively for any evidence of awareness.

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    Main Results:

    • No patients (0%) in the study group exhibited any signs or evidence of intraoperative awareness.
    • The findings remained consistent across all patients, regardless of the premedication administered.
    • The nitrous-oxide-oxygen technique with neuromuscular blockade proved effective in preventing awareness.

    Conclusions:

    • The combination of nitrous-oxide-oxygen and neuromuscular blockade is a highly effective method for preventing intraoperative awareness.
    • Premedication does not appear to be a critical factor in preventing awareness with this anesthetic technique.