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Related Experiment Videos

Fentanyl preloading for rapid-sequence induction of anesthesia.

R C Cork, J L Weiss, S R Hameroff

    Anesthesia and Analgesia
    |January 1, 1984
    PubMed
    Summary

    Low-dose fentanyl effectively reduces cardiovascular and neuroendocrine stress responses during rapid-sequence anesthesia induction. This method mitigates dangerous physiological stress in patients undergoing rapid-sequence induction, improving patient safety.

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    Area of Science:

    • Anesthesiology
    • Cardiovascular Physiology
    • Neuroendocrinology

    Background:

    • Airway protection is critical during general anesthesia induction.
    • Rapid-sequence induction (RSI) protects against regurgitation but increases stress response.
    • This stress is particularly hazardous for patients with myocardial ischemia risk.

    Purpose of the Study:

    • To evaluate the efficacy of low-dose fentanyl in mitigating cardiovascular and neuroendocrine stress during RSI.
    • To compare stress responses in patients preloaded with fentanyl versus a control group.

    Main Methods:

    • Thirty patients were randomized into two groups: fentanyl preloaded or control.
    • Both groups underwent rapid-sequence induction with modified thiopental doses.
    • Hemodynamic parameters, catecholamine levels, beta-endorphin, and ECG changes were monitored.

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    Main Results:

    • Fentanyl group showed significantly lower post-intubation blood pressures compared to controls (P < 0.05).
    • Plasma beta-endorphin and norepinephrine levels increased significantly in controls, but not in the fentanyl group (P < 0.05).
    • Fentanyl reduced dysrhythmia incidence, though not to a statistically significant degree.

    Conclusions:

    • Low-dose fentanyl (5 µg/kg) effectively attenuates specific cardiovascular and neuroendocrine stress markers associated with RSI.
    • Fentanyl administration during RSI may offer improved patient safety, particularly for those at risk of myocardial ischemia.