Abstract
The distribution of pulmonary blood flow was measured in supine patients before surgery by means of lung perfusion scanning with99mTc-macroaggregated albumin in an attempt to predict values of PaO2 during subsequent one-lung anaesthesia. The PaO2 values during one-lung anaesthesia were well correlated with the preoperative lung perfusion partition ratios (r = 0.84, p < 0.05). In 9 of 40 patients, PaO2 was < 80 mmHg during one-lung ventilation (FIO2 0.99). In these patients the lung perfusion ratios of the dependent lung were as low as 41.0-48.2 per cent. These results indicate that preoperative measurement of pulmonary blood flow can predict values of PaO2 during one-lung anaesthesia.
Résumé
On a mesuré, avant la chirurgie, la distribution du débit sanguin pulmonaire en utilisant un balayage de perfusion pulmonaire avec de ľalbumine99mTC-macroagrégé chez un patient en décubitus dorsal, afin ďessayer de prédire les valeurs de la PaO2 durant une anesthésie à un poumon subséquente. Durant ľanesthésie à un poumon, les valeurs de la PaO2 correspondaient bien à celles des rapports de partition de la perfusion pulmonaire préopératoire (r = 0.84, p < 0,05). Neuf des 40 patients ont eu une PaO2 de moins de 80 mmHg durant la ventilation à un poumon (FIO2 0.99). Dans ces cas là, les rapports de perfusion pulmonaire du poumon dépendant étaient aussi peu élevés que 41.0-48.2 per cent. Ces résultats indiquent que ľon peut prédire les valeurs de la PaO2 durant une anesthésie à un poumon en mesurant le débit sanguin pulmonaire en période préopératoire.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Peltola K. Central hemodynamics and oxygenation during thoracic anesthesia. Acta Anaesthesiol Scand 1983; 27 (Suppl 77): 1–51.
Katz JA, Laverne RG, Fairley MB et al. Pulmonary oxygen exchange during endobronchial anesthesia. Anesthesiology 1982; 56: 164–71.
Brown RA, Cation DV, Ashworth EJ. A study of oxygenation during thoractomy. Can Anaesth Soc J 1968; 15: 468–77.
Tarhan S, Lundborg RO. Carlens endobronchial catheter versus regular endotracheal tube during thoracic surgery; a comparison of blood gas tensions and pulmonary shunting. Can Anaesth Soc J 1971; 18: 594–9.
Lunding M, Fernandes A. Arterial oxygen tension and acid-base status during thoracic anaesthesia. Acta Anaesthesiol Scand 1967; 11: 43–55.
Flacke JW, Thompson DS, Read RC. Influence of tidal volume and pulmonary artery occlusion on arterial oxygenation during endobronchial anesthesia. South Med J 1976; 69: 619–26.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Nomoto, Y. Preoperative pulmonary blood flow and one-lung anaesthesia. Can J Anaesth 34, 447–449 (1987). https://doi.org/10.1007/BF03014346
Issue Date:
DOI: https://doi.org/10.1007/BF03014346