Capnography during jet ventilation for laryngoscopy

Allan Gottschalk, Natasha Mirza, Gregory S. Weinstein, McIver W. Edwards

Research output: Contribution to journalArticle

Abstract

Jet ventilation is often used during laryngoscopy to permit improved visualization of the larynx and to eliminate a potentially flammable endotracheal tube when laser surgery of the airway is performed. Observation of chest wall movement and blood gas analysis are the usual standards for assessing the adequacy of ventilation during jet ventilation. It is reasonable to hypothesize that measurement of end-tidal CO2 concentrations during jet ventilation can be used to assess the adequacy of ventilation during jet ventilation. To test this hypothesis, end-tidal CO2 concentrations were determined during mechanical ventilation through an endotracheal tube and during jet ventilation. At the time that each end- tidal measurement was obtained, a sample of arterial blood was also obtained for later blood gas analysis. For both mechanical ventilation and jet ventilation, well defined relationships between end-tidal CO2 and arterial CO2 tensions were obtained. However, the relationships are distinct: the difference in arterial to end-tidal CO2 tension during supraglottic jet ventilation at a conventional respiratory rate was found to be 13.4 ± 6.8 mm Hg (mean ± SD) compared with 5.7 ± 5.2 mm Hg obtained during conventional ventilation through an endotracheal tube.

Original languageEnglish (US)
Pages (from-to)155-159
Number of pages5
JournalAnesthesia and Analgesia
Volume85
Issue number1
DOIs
StatePublished - 1997
Externally publishedYes

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Capnography
Laryngoscopy
Ventilation
Blood Gas Analysis
Artificial Respiration
Laser Therapy
Thoracic Wall
Respiratory Rate
Larynx
Arterial Pressure
Observation

ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine

Cite this

Capnography during jet ventilation for laryngoscopy. / Gottschalk, Allan; Mirza, Natasha; Weinstein, Gregory S.; Edwards, McIver W.

In: Anesthesia and Analgesia, Vol. 85, No. 1, 1997, p. 155-159.

Research output: Contribution to journalArticle

Gottschalk, Allan ; Mirza, Natasha ; Weinstein, Gregory S. ; Edwards, McIver W. / Capnography during jet ventilation for laryngoscopy. In: Anesthesia and Analgesia. 1997 ; Vol. 85, No. 1. pp. 155-159.
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