Abstract
Purpose: The report investigates, in awake patients before induction of anesthesia, the effect of preoxygenation by the single vital capacity breath technique following forced exhalation on the mean arterial PO2 (PaO2).
Methods: In 10 adult patients undergoing elective surgery, the mean PaO2 values achieved 30 sec after preoxygenation by the single vital capacity breath technique was compared with the mean PaO2 values achieved by preoxygenation by the traditional tidal volume breathing for three minutes. Each patient served as her/his own control.
Results: The mean PaO2 following the single vital capacity breath technique was higher (295±67 mmHg) than that achieved by the traditional tidal volume breathing technique at 30 sec and 60 sec, and was not significantly different from that achieved by the traditional technique after three minutes (307±70 mmHg).
Conclusion: The single vital capacity breath technique following forced exhalation can rapidly provide adequate preoxygenation within 30 sec.
Résumé
Objectif: Étudier, chez des patients éveillés et avant l’induction de l’anesthésie, l’effet de la préoxygénation sur la PO2(PaO2) artérielle moyenne, par l’utilisation d’une inspiration à capacité vitale suivant une expiration forcée.
Méthode: Chez 10 adultes, admis pour une intervention chirurgicale planifiée, les valeurs moyennes de la PaO2 obtenues 30 s après une préoxygénation selon la technique de la capacité vitale ont été comparées aux valeurs moyennes de la PaO2 obtenues à la suite d’une préoxygénation par l’utilisation traditionnelle du volume courant pendant trois minutes. Chaque patient était son propre témoin.
Résultats: La PaO2 moyenne mesurée avec la capacité vitale était plus élevée (295±67 mmHg) que celle qui résultait de la mesure du volume courant à 30 s et à 60 s, mais elle ne présentait pas de différence significative avec la mesure traditionnelle après trois minutes (307±70 mmHg).
Conclusion: L’inspiration à capacité vitale suivant une expiration forcée peut fournir rapidement une préoxygénation suffisante en moins de 30 s.
Article PDF
Avoid common mistakes on your manuscript.
References
Yurino M, Kimura H. Induction of anesthesia with sevoflurane, nitrous oxide, and oxygen: a comparison of spontaneous ventilation and vital capacity rapid inhalation induction (VCRII) techniques. Anesth Analg 1993; 76: 598–601.
Yurino M, Kimura H. A comparison of vital capacity breath and tidal breathing techniques for induction of anaesthesia with high sevoflurane concentrations in nitrous oxide and oxygen. Anaesthesia 1995; 50: 308–11.
Philip BK, Lombard LL, Roaf ER, Drager LR, Calalang I, Philip JH. Comparison of vital capacity induction with sevoflurane to intravenous induction with propofol for adult ambulatory anesthesia. Anesth Analg 1999; 89: 623–7.
Yurino M, Kimura H. Comparison of induction time and characteristics between sevoflurane and sevoflurane/nitrous oxide. Acta Anaesthesiol Scand 1995; 39: 356–8.
Baraka A. PCO2 control by fresh gas flow during controlled ventilation with a semi-open circuit. Br J Anaesth 1969; 41: 527–9.
Hamilton WK, Eastwood DW. A study of denitrogenation with inhalation anesthetic systems. Anesthesiology 1955; 16: 861–7.
Gold MI, Duarte I, Muravchick S. Arterial oxygenation in conscious patients after 5 minutes and 30 seconds of oxygen breathing. Anesth Analg 1981; 60: 313–5.
Baraka A, Taha SK, Aouad MT, El-Khatib MF, Kawkabani NI. Preoxygenation. Comparison of maximal breathing and tidal volume breathing techniques. Anesthesiology 1999; 91: 612–6.
McCrory JW, Matthews JNS. Comparison of four methods of preoxygenation. Br J Anaesth 1990; 64: 571–6.
Baraka A, Aouad M, Taha S, El-Khatib M, Kawkabani N, Soueidi A Apnea-induced hemoglobin desaturation during one-lungvs two-lung ventilation. Can J Anaesth 2000; 47: 58–61.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Baraka, A., Haroun-Bizri, S., Khoury, S. et al. Single vital capacity breath for preoxygenation. Can J Anaesth 47, 1144–1146 (2000). https://doi.org/10.1007/BF03027970
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF03027970