Abstract
Broncho-pleural fistula is a relatively rare but life-threatening complication of pneumonectomy. Early detection of this complication is crucial for optimal treatment. We describe a simple technique to detect postpneumonectomy broncho-pleural fistula by measuring concentrations of O 2 and N 2O in the pneumonectomy cavity at baseline and after allowing patients to breath gas mixtures enriched with O 2, N 2O, or both. The technique was used in 22 patients. In 20 control patients the test was carried out 48 hours after pneumonectomy. Both the O 2 and the N 2O test were negative in all cases. However, in 2 patients with broncho-pleural fistula both the O 2 and the N 2O tests were positive.
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