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Related Experiment Videos

Effects on respiratory patterns during bronchoscopy by the Sanders attachment technique

F Zveibil, J Lemer, S De Myttenaere

    Chest
    |May 1, 1982
    PubMed
    Summary

    Choosing the right injector and bronchoscope sizes is crucial for safe bronchoscopy. This study found that a higher ratio of injector to bronchoscope diameter improves oxygenation and ventilation during the procedure.

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    Area of Science:

    • Pulmonology
    • Anesthesiology
    • Medical Devices

    Background:

    • Bronchoscopy is a common procedure for diagnosing and treating lung conditions.
    • Selecting appropriate equipment, such as bronchoscope and injector sizes, is critical for patient safety and procedural success.
    • The Sanders attachment technique is frequently used during bronchoscopy under general anesthesia.

    Purpose of the Study:

    • To determine the optimal ratio of injector to bronchoscope internal diameters (RI/B) for use with the Sanders attachment during bronchoscopy.
    • To provide a rational basis for selecting injector and bronchoscope sizes in this clinical setting.

    Main Methods:

    • Seven dogs underwent bronchoscopy under general anesthesia with the Sanders attachment.
    • Measurements of arterial oxygen (PaO2) and carbon dioxide (PaCO2) partial pressures, fraction of inspired oxygen (FiO2), and peak inspiratory pressure were recorded.

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  • These parameters were analyzed in relation to the RI/B.

    • Main Results:

    • Increasing the RI/B ratio led to higher peak inspiratory pressures.
    • An elevated RI/B ratio resulted in increased PaO2 and FiO2.
    • A higher RI/B ratio correlated with a decrease in PaCO2.

    Conclusions:

    • The ratio of injector to bronchoscope internal diameters significantly impacts respiratory parameters during bronchoscopy.
    • A higher RI/B is associated with improved oxygenation and ventilation.
    • A working table is proposed to aid in predicting the optimal RI/B for clinical use.