On-line expiratory flow-volume curves during thoracic surgery: occurrence of auto-PEEP

Flow-volume loops were monitored continuously in 39 patients undergoing thoracic surgery requiring one-lung ventilation. In 26 of the 39 patients (67%), auto-positive end-expiratory pressure (auto-PEEP) was seen on the flow-volume curves during both two-lung and one-lung ventilation. Eighty-seven pe...

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Bibliographic Details
Published in:British journal of anaesthesia : BJA 1994-01, Vol.72 (1), p.25-28
Main Authors: BARDOCZKY, G., D'HOLLANDER, A., YERNAULT, J.-C., VAN MEUYLEM, A., MOURES, J.-M., ROCMANS, P.
Format: Article
Language:English
Subjects:
Adult
Aged
Airway Resistance
Anesthesia, General
Biological and medical sciences
Forced Expiratory Volume
Humans
Lung - physiopathology
Lung - surgery
Medical sciences
Middle Aged
Monitoring flow-volume curves
Positive-Pressure Respiration
Pulmonary Ventilation - physiology
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Surgery of the respiratory system
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Summary:Flow-volume loops were monitored continuously in 39 patients undergoing thoracic surgery requiring one-lung ventilation. In 26 of the 39 patients (67%), auto-positive end-expiratory pressure (auto-PEEP) was seen on the flow-volume curves during both two-lung and one-lung ventilation. Eighty-seven percent of the patients whose trachea was intubated with a smaller size (35- and 37-French gauge) double-lumen tracheal tube exhibited auto-PEEP, compared with patients in whom the tube used was larger (39- or 41-French gauge: 54% and 50%, respectively). Before operation, mean airway resistance was significantly greater in patients who exhibited auto-PEEP during anaesthesia (2.4 cm H2O litre−1 s) than in patients without auto-PEEP (1.7 cm H2O litre−1 s). (Br. J. Anaesth. 1994; 72: 25–28)
ISSN:0007-0912
1471-6771
DOI:10.1093/bja/72.1.25