Selection of the Proper Size of Laryngeal Mask Airway in Adults

Voyagis, G. S.; Batzioulis, Peter G.; Secha-Doussaitou, Pelagia N.

doi:10.1213/00000539-199609000-00062

Cited by 48 publications

(13 citation statements)

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“…ᮊ 1998 Blackwell Science Ltd weight-based recommendations are of limited value in size selection of the standard laryngeal mask airway and that choosing a size 5 for males and size 4 for females may be a better clinical strategy [14]. The time taken to successful intubation via the intubating laryngeal mask was similar to previous studies of blind [15] and fibreoptic guided [16] intubation via the standard laryngeal mask airway.…”

supporting

confidence: 70%

The intubating laryngeal maskClinical appraisal of ventilation and blind tracheal intubation in 110 patients

et al. 1998

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SummaryThis study assesses the efficacy of the intubating laryngeal mask as a ventilation device and blind intubation guide. Following induction of anaesthesia with propofol, the device was successfully inserted at the first attempt in 110/110 (100%) patients. Placement took less than 10 s in all patients. Size selection was based on nose-chin distance. Adequate ventilation was achieved in 104/110 (95%) patients. Blind tracheal intubation using an 8-mm internal diameter straight silicone cuffed tracheal tube was attempted 3 min after the administration of vecuronium. Passage of a lighted stylet through the intubating laryngeal mask was used to determine the position of the intubating laryngeal mask cuff before blind intubation. If resistance was felt during intubation, a sequence of adjusting manoeuvres was used, based on the depth at which resistance occurred. Tracheal intubation was possible in 104/104 (100%) patients. In 42 (40%) patients, no resistance was encountered and the trachea was intubated at the first attempt. Sixty-two (60%) patients required one adjusting manoeuvre. The mean (range) time taken to successful intubation, i.e. the time from disconnection of the intubating laryngeal mask from the breathing system to successful tracheal intubation, was 79 (12-315) s. Six patients with potential or known intubation problems were included in the study. The tracheas of all six patients were successfully intubated. We conclude that the intubating laryngeal mask is an effective ventilation device and intubation guide with potential for use in patients who may present difficulty in tracheal intubation.

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supporting

confidence: 70%

The intubating laryngeal maskClinical appraisal of ventilation and blind tracheal intubation in 110 patients

et al. 1998

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“…We chose a fixed-size LMA (size 4 for men and size 3 for women). Several investigators have recently recommended a larger LMA (size 5 for men and size 4 for women) to reduce postoperative oropharyngeal morbidity [15][16][17][18], because of lower oropharyngeal leak pressure during positive pressure ventilation. To the contrary, Grady et al [19] have concluded that a large LMA (size 5) was associated with a higher incidence of sore throat in spontaneously breathing men 24 h postoperatively.…”

Section: Discussionmentioning

confidence: 99%

A comparison of postoperative sore throat after use of laryngeal mask airway and tracheal tube

et al. 2004

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“…Several researchers have attempted to find a method for selecting an appropriate size of the laryngeal mask [7–11]. Voyagis and colleagues found that the mask provided a better airtight seal during controlled ventilation using the sex‐related selection method (size 4 in females and size 5 in males) than the weight‐related method (size 3 in patients weighing < 70 kg, size 4 for patients weighing 70–90 kg and size 5 for patients weiging > 90 kg) [7]. Berry and colleagues sought the optimal size by ease of insertion, sealing effect, gastric insufflation and anatomical position of the laryngeal mask, and found that either size 4 or 5, but never size 3, was optimal.…”

Section: Appropriate Sizementioning

confidence: 99%