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  • Title: Multiple sites of impingement of a tracheal tube as it is advanced over a fibreoptic bronchoscope or tracheal tube introducer in anaesthetized, paralysed patients.
    Author: Jackson AH, Orr B, Yeo C, Parker C, Craven R, Greenberg SL.
    Journal: Anaesth Intensive Care; 2006 Aug; 34(4):444-9. PubMed ID: 16913339.
    Abstract:
    Impingement of the tracheal tube on upper airway structures occurs commonly during advancement over a fibreoptic bronchoscope or introducer. In this descriptive study a fibrescope was used to assess the site and mechanism of tracheal tube impingement during advancement over a variety of fibreoptic bronchoscopes and introducers during orotracheal intubation in anaesthetized adults. The effect of the 90 degree counterclockwise rotation manoeuvre in overcoming impingement was also assessed. We recorded impingement at the right arytenoid, left arytenoid, epiglottis, interarytenoid tissue and the left pyriform fossa. Our study found a wider range of sites at which impingement may occur than in previous studies. We also found that when 90 degree counterclockwise rotation of the tip of the tracheal tube was achieved, the impingement was reliably overcome.
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