Efficacy of the laryngeal tube during intermittent positive‐pressure ventilation

We studied the efficacy of the laryngeal tube (VBM, Germany) during intermittent positive‐pressure ventilation in 50 patients. After induction of anaesthesia and neuromuscular blockade, a size 4 laryngeal tube was inserted for patients of height 155 cm or greater. After insertion of the laryngeal tu...

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Published inAnaesthesia Vol. 55; no. 11; pp. 1099 - 1102
Main Authors Asai, T., Murao, K., Shingu, K.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Science Ltd 01.11.2000
Blackwell
Subjects
Adult
Aged
Airway
Anesthesia
Anesthesia, General
Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy
Anesthesia: equipment, devices
Biological and medical sciences
Equipment Design
Female
Humans
intermittent positive pressure
Intermittent Positive-Pressure Ventilation
Intubation, Intratracheal - instrumentation
Intubation, Intratracheal - methods
Male
Medical sciences
Middle Aged
Ventilation
Human
Positive pressure
Intermittent
Cuffed tube
General anesthesia
Larynx
Artificial ventilation
Technical equipment
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Summary:We studied the efficacy of the laryngeal tube (VBM, Germany) during intermittent positive‐pressure ventilation in 50 patients. After induction of anaesthesia and neuromuscular blockade, a size 4 laryngeal tube was inserted for patients of height 155 cm or greater. After insertion of the laryngeal tube, its pharyngeal and oesophageal balloons were inflated to an intracuff pressure of 60 cmH2O. An Ambu self‐inflating bag was attached to the laryngeal tube and the lungs were ventilated manually at 15 breath.min−1. It was possible to ventilate the lungs at the first attempt in 47 patients (94%). The airway pressure at which air leaked around the laryngeal tube exceeded 18 cmH2O in 41 patients (82%), and was > 30 cmH2O in 25 (50%). Median [interquartile range (range)] leak pressure was 30 [20–30 (6 to > 30)] cmH2O. Median [interquartile range (range)] tidal volume was 587 [533–653 (133–800)] ml or 8.8 [8.2–10.6 (1.9–12.6)] ml.kg−1. We conclude that the laryngeal tube has a potential role in airway management during intermittent positive‐pressure ventilation for anaesthesia or cardiopulmonary resuscitation.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0003-2409
1365-2044
DOI:10.1046/j.1365-2044.2000.01710.x