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OXYGENATION

OXYGENATION Abstract To the Editor.—The use of the Venturi oxygen injection technique in laryngoscopy should be of great interest to many endoscopists. In reading "Oxygen Injection in Suspension Laryngoscopy" by Barr et al in the June 1971 (Archives 93:606-609, 1971) two questions came to mind. (1) What are the real variations in pressure with this injector? (2) What would be the expected temporal changes in pH, Pco2, and Po2 following induction of general anesthesia, production of apnea and ventilation with 100% o2 for three minutes? The first question is raised because the time constant of an aneroid manometer is too large to measure the rapid fluctuations of pressure induced by this technique. The second question, asking what the control values would be in this experiment, led me to consult the literature. Frumin et al,1 in 1959, maintained adequate oxygenation in apneic patients for over 30 minutes but References 1. Frumin MJ, Epstein RM, Cohen G: Apneic oxygenation in man . Anesthesiology 20:789, 1959.Crossref 2. Heller ML, Watson TR, Irmedy DS: Apneic oxygenation in man: Polaragraphic arterial oxygen tension study . Anesthesiology 25:25, 1964.Crossref 3. Morales CA, Epstein BS, Cinco B, et al: Ventilation during general anesthesia for bronchoscopy: Evaluation of a new technique . J Thorac Cardiovasc Surg 57:873, 1969. 4. Nolan RT: Preoxygenation and thiopentane-suxamethonium induction . Brit J Anesth 39:794, 1967.Crossref 5. Pender JW, Winchester LW, Jamplis RW, et al: Effects of anesthesia on ventilation during bronchoscopy . Anesth Analg 47:415, 1968.Crossref 6. Sanders RD: Two ventilation attachments for bronchoscopy . Delaware Med J 39:170, 1967. 7. Spoerel WE; Ventilation through an open bronchoscope . Canad Anesth Soc J 16:61, 1969.Crossref 8. Spoerel WE: Ventilation attachment for the fiber optic bronchoscope . Anesthesiology 32:561, 1970.Crossref http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Otolaryngology American Medical Association

OXYGENATION

Abstract

Abstract To the Editor.—The use of the Venturi oxygen injection technique in laryngoscopy should be of great interest to many endoscopists. In reading "Oxygen Injection in Suspension Laryngoscopy" by Barr et al in the June 1971 (Archives 93:606-609, 1971) two questions came to mind. (1) What are the real variations in pressure with this injector? (2) What would be the expected temporal changes in pH, Pco2, and Po2 following induction of general anesthesia, production of apnea...
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References (8)

Publisher
American Medical Association
Copyright
Copyright © 1971 American Medical Association. All Rights Reserved.
ISSN
0003-9977
DOI
10.1001/archotol.1971.00770070727021
Publisher site
See Article on Publisher Site

Abstract

Abstract To the Editor.—The use of the Venturi oxygen injection technique in laryngoscopy should be of great interest to many endoscopists. In reading "Oxygen Injection in Suspension Laryngoscopy" by Barr et al in the June 1971 (Archives 93:606-609, 1971) two questions came to mind. (1) What are the real variations in pressure with this injector? (2) What would be the expected temporal changes in pH, Pco2, and Po2 following induction of general anesthesia, production of apnea and ventilation with 100% o2 for three minutes? The first question is raised because the time constant of an aneroid manometer is too large to measure the rapid fluctuations of pressure induced by this technique. The second question, asking what the control values would be in this experiment, led me to consult the literature. Frumin et al,1 in 1959, maintained adequate oxygenation in apneic patients for over 30 minutes but References 1. Frumin MJ, Epstein RM, Cohen G: Apneic oxygenation in man . Anesthesiology 20:789, 1959.Crossref 2. Heller ML, Watson TR, Irmedy DS: Apneic oxygenation in man: Polaragraphic arterial oxygen tension study . Anesthesiology 25:25, 1964.Crossref 3. Morales CA, Epstein BS, Cinco B, et al: Ventilation during general anesthesia for bronchoscopy: Evaluation of a new technique . J Thorac Cardiovasc Surg 57:873, 1969. 4. Nolan RT: Preoxygenation and thiopentane-suxamethonium induction . Brit J Anesth 39:794, 1967.Crossref 5. Pender JW, Winchester LW, Jamplis RW, et al: Effects of anesthesia on ventilation during bronchoscopy . Anesth Analg 47:415, 1968.Crossref 6. Sanders RD: Two ventilation attachments for bronchoscopy . Delaware Med J 39:170, 1967. 7. Spoerel WE; Ventilation through an open bronchoscope . Canad Anesth Soc J 16:61, 1969.Crossref 8. Spoerel WE: Ventilation attachment for the fiber optic bronchoscope . Anesthesiology 32:561, 1970.Crossref

Journal

Archives of OtolaryngologyAmerican Medical Association

Published: Nov 1, 1971

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