Fibreoptic views through the laryngeal mask and the intubating laryngeal mask

McNeillis, N. J. D.; Timberlake, C.; Avidan, Michael S.; Sarang, K.; Choyce, Andrew; Radcliffe, Jeremy

doi:10.1046/j.1365-2346.2001.00870.x

Cited by 17 publications

(11 citation statements)

References 22 publications

(25 reference statements)

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“…McNeillis et al compared the laryngeal view from a bronchoscope passed through a cLMA, with the view from a tracheal tube inserted to 18 cm inside an ILMA. They found that the vocal cords were visible in 92% of cases in the former technique, vs 52% in the latter [16]. Like us, they speculate that the reason for the inferior endoscopic view via the ILMA was the increased depth of insertion of the bronchoscope, necessary to lift the epiglottis elevator bar.…”

Section: Discussionmentioning

confidence: 74%

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Manikin study of fibreoptic‐guided intubation through the classic laryngeal mask airway with the Aintree intubating catheter vs the intubating laryngeal mask airway in the simulated difficult airway*

2010

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In this randomised crossover manikin study of simulated difficult intubation, 26 anaesthetists attempted to intubate the trachea using two fibreoptic-guided techniques: via a classic laryngeal mask airway using an Aintree intubating catheter and via an intubating laryngeal mask airway using its tracheal tube. Successful intubation was the primary endpoint, which was completed successfully in all 26 cases using the former technique, and in 5 of 26 cases using the latter (p < 0.0001). The former technique also proved quicker to reach the vocal cords with the fibrescope (median (IQR . We conclude that in simulated difficult intubation, fibreoptic intubation appears easier to achieve using a classic laryngeal mask airway and an Aintree intubating catheter than through an intubating laryngeal mask airway.

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Section: Discussionmentioning

confidence: 74%

“…Other authors have also reported inferior fibreoptic positioning of the ILMA compared with the cLMA [4,15,16]. Keller and Brimacombe [15] suggest that the fixed length of the airway tube of the ILMA may be responsible.…”

Section: Discussionmentioning

confidence: 99%

Manikin study of fibreoptic‐guided intubation through the classic laryngeal mask airway with the Aintree intubating catheter vs the intubating laryngeal mask airway in the simulated difficult airway*

2010

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“…The stopwatch was then stopped (Time 1) and the investigator checked the position of the airway using a fibreoptic endoscope. The view was graded by investigators using a validated fibreoptic scoring system [7]: • full view of vocal cords: grade 1;…”

Section: Methodsmentioning

confidence: 99%

“…The bevel may be deflecting the FOS and making passage of the FOS in the trachea more difficult. McNeillis et al found that the view of the laryngeal inlet through the cLMA was better than through the ILMA and an 8-mm Euromedical tracheal tube, inserted to 18 cm to lift the epiglottic bar [7]. Keller and Brimacombe reported that the fibreoptic positioning of the ILMA was inferior to that of the cLMA [16].…”

Section: ó 2007 the Authorsmentioning

confidence: 99%

Fibreoptic intubation using three airway conduits in a manikin: the effect of operator experience*

Hodzovic

Petterson²,

Wilkes

et al. 2007

Anaesthesia

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In a randomised cross-over study, 72 anaesthetists (24 Senior House Officers, 24 Specialist Registrars and 24 Consultants) attempted to place a fibreoptic scope in the trachea of a manikin using three airway conduits: the Berman airway, the LMA Classic(trade mark) and the intubating laryngeal mask airway. The time for insertion of the airway conduit, delivery of two breaths and fibreoptic scope placement in the trachea was the primary endpoint. These overall times were significantly shorter (median [interquartile range]) using the LMA Classic (36 [28-45]) than via the intubating laryngeal mask (54 [42-79]) and the Berman airway (45 [33-80]), p < 0.0001. Senior House Officers were significantly slower than both Specialist Registrars and Consultants (p < 0.0001). The LMA Classic was considered to be the easiest conduit to use for fibreoptic scope placement by all grades of anaesthetists. We conclude that the LMA Classic is the most effective conduit for fibreoptic scope placement especially for anaesthetists with limited experience in its use.

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“…However, there was a suggestion of more malalignment in the PLA group (P=0.06). The degree of alignment may help to predict the ability of an airway device to assist in endotracheal intubation 24 . The success of the LMA in endotracheal intubation has been well documented 25,26 .…”

Section: Laryngeal Alignmentmentioning

confidence: 99%

Randomised Comparison of the Classic Laryngeal Mask Airway^™ with the Cobra Perilaryngeal Airway^™ during Anaesthesia in Spontaneously Breathing Adult Patients

Andrews

Alexander

et al. 2009

Anaesth Intensive Care

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We tested the hypothesis that the Cobra Perilaryngeal Airway (PLA) with its high volume low-pressure cuff would provide superior airway leakage pressure compared with the Classic Laryngeal Mask Airway (LMA) in spontaneously breathing adult patients. Ninety consecutive adult patients were randomly allocated to receive one of these two supralaryngeal devices. The airway leakage pressure was higher for the PLA compared with the LMA (22±9 cmH 2 O vs. 18±6 cmH 2 O; P <0.05). The mean airway device intracuff pressure was lower for the PLA compared to the LMA (36.1±15.2 mmHg vs. 86.3±25.3 mmHg P <0.0001). The time required to achieve successful insertion was greater for the PLA compared with the LMA (39±21 seconds vs. 27±10 seconds; P <0.005). The number of attempts required to achieve successful insertion and the incidence of postoperative complications were similar in both groups. The findings suggest that the PLA provides a superior airway seal at a lower intracuff pressure compared to the LMA. However, the time for successful insertion may be increased.

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Fibreoptic views through the laryngeal mask and the intubating laryngeal mask

Abstract: The view of the laryngeal inlet is better through the laryngeal mask airway than through a tracheal tube inserted to 18 cm in the intubating laryngeal mask.

Cited by 17 publications

References 22 publications

Manikin study of fibreoptic‐guided intubation through the classic laryngeal mask airway with the Aintree intubating catheter vs the intubating laryngeal mask airway in the simulated difficult airway*

Manikin study of fibreoptic‐guided intubation through the classic laryngeal mask airway with the Aintree intubating catheter vs the intubating laryngeal mask airway in the simulated difficult airway*

Fibreoptic intubation using three airway conduits in a manikin: the effect of operator experience*

Randomised Comparison of the Classic Laryngeal Mask Airway^™ with the Cobra Perilaryngeal Airway^™ during Anaesthesia in Spontaneously Breathing Adult Patients

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Fibreoptic views through the laryngeal mask and the intubating laryngeal mask

Abstract: The view of the laryngeal inlet is better through the laryngeal mask airway than through a tracheal tube inserted to 18 cm in the intubating laryngeal mask.

Cited by 17 publications

References 22 publications

Manikin study of fibreoptic‐guided intubation through the classic laryngeal mask airway with the Aintree intubating catheter vs the intubating laryngeal mask airway in the simulated difficult airway*

Manikin study of fibreoptic‐guided intubation through the classic laryngeal mask airway with the Aintree intubating catheter vs the intubating laryngeal mask airway in the simulated difficult airway*

Fibreoptic intubation using three airway conduits in a manikin: the effect of operator experience*

Randomised Comparison of the Classic Laryngeal Mask Airway™ with the Cobra Perilaryngeal Airway™ during Anaesthesia in Spontaneously Breathing Adult Patients

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Product

Resources

About

Randomised Comparison of the Classic Laryngeal Mask Airway^™ with the Cobra Perilaryngeal Airway^™ during Anaesthesia in Spontaneously Breathing Adult Patients