Document Detail

Cadaver study of oesophageal insufflation with supraglottic airway devices during positive pressure ventilation in an obstructed airway.
MedLine Citation:
PMID:  22661751     Owner:  NLM     Status:  Publisher    
BACKGROUND: /st>Supraglottic airway devices (SADs) play an increasing role in airway management in clinical anaesthesia and emergency medicine. Until now, no data exist concerning the extent of oesophageal insufflation when oropharyngeal leak pressures are exceeded. METHODS: /st>Laryngeal masks LMA-Supreme™ and LMA-ProSeal™, laryngeal tubes LTS-D and LTS II, Combitube™, and I-Gel were inserted into unfixed human cadavers. The oesophagus was connected to a volumeter, while the trachea was closed surgically to simulate complete airway obstruction. Volumes of oesophageal insufflation resulting from pressure-controlled ventilation at inspiratory pressures of 20, 40, and 60 mbar were measured. RESULTS: /st>No oesophageal insufflation could be detected at a ventilation pressure of 20 mbar in any device. Using inspiratory pressures of 40 and 60 mbar, oesophageal insufflation occurred in all devices, with significantly higher volumes of intraoesophageal air for both laryngeal tubes. CONCLUSIONS: /st>The use of SADs with inspiratory pressures of 20 mbar appears to be safe regarding the risk of intragastric insufflation. Higher inspiratory pressures should be strictly avoided.
W Schmidbauer; H Genzwürker; O Ahlers; H Proquitte; T Kerner
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-1
Journal Detail:
Title:  British journal of anaesthesia     Volume:  -     ISSN:  1471-6771     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372541     Medline TA:  Br J Anaesth     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Emergency Medicine, Bundeswehrkrankenhaus Berlin, Scharnhorststraße 13, 10115 Berlin, Germany.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Ventilation with low tidal volumes during upper abdominal surgery does not improve postoperative lun...
Next Document:  Changes in cerebrospinal fluid magnesium levels in patients undergoing spinal anaesthesia for hip ar...