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  • Title: Assessment of manoeuvres required for successful blind tracheal intubation through the PAXpress.
    Author: Ahmed SM, Khan RM, Maroof M, Ahmed M.
    Journal: Anaesthesia; 2008 Jan; 63(1):32-5. PubMed ID: 18086068.
    Abstract:
    A PAXpress (Vital Signs Inc., Barnham, UK) airway device was placed in 50 adult ASA grade I and II patients undergoing elective surgery under general anaesthesia. The alignment of the PAXpress to the larynx was scored fibreoptically. The patients were then intubated blindly through the PAXpress and the adjusting manoeuvres required for successful intubation and complications of intubation observed. Insertion of the PAXpress was successful in all patients, and intubation was successful in 42 (84%) patients. Eleven patients were intubated in the neutral position, seven with a flexion manoeuvre and 24 with an extension manoeuvre. Intubation was successful in 17/20, 18/20, 6/8 and 1/2 of patients with a fibreoptic alignment score of 1, 2, 3 and 4, respectively. When the fibreoptic alignment score was between 2 and 4 intubation was achieved predominantly with the extension manoeuvre (20/30, 66%) rather than the flexion manoeuvre (1/30, 3%) or the neutral position (5/30, 16%). Blood staining was observed in 20 patients. We conclude that blind tracheal intubation through PAXpress has a moderately good success rate and a high incidence of mucosal trauma. 'Extension' is the predominant adjusting manoeuvre required for blind tracheal intubation, especially when the alignment of the PAXpress to the larynx is poor.
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