Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Physiological changes associated with unilateral pulmonary ventilation during operations on the lung

  • 171 Accesses

  • 5 Citations


No important changes in the respiratory parameters were observed during onelung anaesthesia. However, this kind of thoracic intervention can be accompanied by a dramatic fall in arterial oxygen tension.

Methods to avoid tissue hypoxia have been described. In our series no complications whatever occurred in the operative and post-operative periods which could be related to the oxygenation of the patient.


Durant l’anesthésie d’un seul poumon en chirurgie thoracique, il n’y a pas de modifications importantes dans les parametres respiratoires. Cependant ce type de chirurgie thoracique non-cardiaque est accompagné par une baisse marquée dans les tensions artérielles d’oxygène. Nous avons décrit des méthodes pour éviter l’hypoxémie des tissus. Dans notre série, nous n’avons pas eu de complications durant les périodes per et postopératoires en ce qui concerne l’oxygénation du malade.


  1. 1.

    Foëx, P., Meloche, R., &Prys-Roberts, C. Studies of anaesthesia in relation to hypertension. Ill: pulmonary gas exchange during spontaneous ventilation. Brit. J. Anaesth.43:644 (1971).

  2. 2.

    Kerr, J.H., Crampton Smith, A., Prys-Roberts, C., &Meloche, R. Observations during endobronchial anaesthesia. I: Ventilation and carbon dioxide clearance. Brit. J. Anaesth.45: 159–167 (1973).

  3. 3.

    Kerr, J.H. Physiological aspects of one-lung (endobronchial) anaesthesia in thoracic surgery. International anesthesiology clinics10: 61–78 (1972).

  4. 4.

    Sullivan, S.F. Oxygen transport. Anesthesiology37: 140–147 (1972).

  5. 5.

    Marshall, B.E. &Wyche, N.Q. Hypoxemia during and after anaesthesia. Anesthesiology37: 178–209 (1972).

  6. 6.

    Prys-Roberts, C. Myocardial function and anaesthesia. International anesthesiology clinics10: 11–25 (1972).

  7. 7.

    Torhan, S. &Lundborg, R.O. Carlens endobronchial catheter versus regular endotracheal tube during thoracic surgery. Canad. Anaesth. Soc. J.18: 594–599 (1971).

Download references

Author information

Correspondence to Robert Bachand or Jacques Audet or Roger Meloche or Rosario Denis.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Bachand, R., Audet, J., Meloche, R. et al. Physiological changes associated with unilateral pulmonary ventilation during operations on the lung. Canad. Anaesth. Soc. J. 22, 659 (1975). https://doi.org/10.1007/BF03013313

Download citation


  • Cardiac Output
  • Tidal Volume
  • Arterial Oxygen Tension
  • Intrapulmonary Shunting
  • Inspire Oxygen Concentration