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Tracheal gas insufflation.

Publication ,  Journal Article
McConnell, R; MacIntyre, NR
Published in: Semin Respir Crit Care Med
2000

Tracheal gas insufflation (TGI) is an adjunct to mechanical ventilation that reduces CO (2) present in the anatomic deadspace. This is accomplished by flowing fresh gas (typically 6-10 lpm) directly into the trachea via a catheter placed into the endotracheal tube positioned at the distal end or by an embedded catheter in the wall of a specially designed endotracheal tube. This is thought to improve gas mixing because of the turbulent flow created at the tip of the catheter. There are two methods of gas flow delivery and cycling. Gas flow may be delivered directly toward the carina or in a reverse flow fashion. Cycling of TGI flow may be just during exhalation or during both inhalation and exhalation. A system integrated into the monitoring and controls of a mechanical ventilator could eventually prove the safest and most effective. However, currently there are no FDA-approved devices for TGI administration. It is critical to monitor the adverse effects (triggering, auto-PEEP [positive end expiratory pressure], air trapping, and patient comfort) created by the additional flow introduced into the ventilator circuit, while balancing the CO (2) clearance. There are limited data, mostly from animal studies. However, the trials done in both animal and humans are promising with regard to effective CO (2) elimination and avoidance of unacceptably high peak airway pressures. Available equipment has limited studies with infants. Even within the adult population, much work needs to be done to determine the optimal catheter position, the most appropriate TGI flow characteristics, and improve the safety of TGI.

Duke Scholars

Published In

Semin Respir Crit Care Med

DOI

ISSN

1069-3424

Publication Date

2000

Volume

21

Issue

3

Start / End Page

211 / 214

Location

United States

Related Subject Headings

  • Respiratory System
  • 3201 Cardiovascular medicine and haematology
  • 1102 Cardiorespiratory Medicine and Haematology
 

Citation

APA
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McConnell, R., & MacIntyre, N. R. (2000). Tracheal gas insufflation. Semin Respir Crit Care Med, 21(3), 211–214. https://doi.org/10.1055/s-2000-9853
McConnell, R., and N. R. MacIntyre. “Tracheal gas insufflation.Semin Respir Crit Care Med 21, no. 3 (2000): 211–14. https://doi.org/10.1055/s-2000-9853.
McConnell R, MacIntyre NR. Tracheal gas insufflation. Semin Respir Crit Care Med. 2000;21(3):211–4.
McConnell, R., and N. R. MacIntyre. “Tracheal gas insufflation.Semin Respir Crit Care Med, vol. 21, no. 3, 2000, pp. 211–14. Pubmed, doi:10.1055/s-2000-9853.
McConnell R, MacIntyre NR. Tracheal gas insufflation. Semin Respir Crit Care Med. 2000;21(3):211–214.
Journal cover image

Published In

Semin Respir Crit Care Med

DOI

ISSN

1069-3424

Publication Date

2000

Volume

21

Issue

3

Start / End Page

211 / 214

Location

United States

Related Subject Headings

  • Respiratory System
  • 3201 Cardiovascular medicine and haematology
  • 1102 Cardiorespiratory Medicine and Haematology