A noninvasive partial carbon dioxide rebreathing technique for measurement of pulmonary capillary blood flow is also a useful oxygenation monitor during one-lung ventilation

Journal of Clinical Anesthesia
Shunsuke FujiiShigehito Sato

Abstract

To test the hypothesis that effective pulmonary capillary blood flow can be a useful indicator for estimating appropriate oxygenation and ventilation during one-lung ventilation in lung surgery. Prospective data analysis. A 770-bed general teaching hospital. 15 ASA physical status II and III patients undergoing elective lung surgery. Patients received general and thoracic epidural anesthesia and underwent lung operation with one-lung ventilation. We measured effective pulmonary capillary blood flow by a partial CO2 rebreathing method and oxygenation parameters during two-lung ventilation before surgery, during one-lung ventilation, and during two-lung ventilation after lung surgery. The effective pulmonary capillary blood flow index significantly decreased by 31.6%, which was associated with a significant decrease in arterial oxygen tension (PaO2). The pulmonary shunt fraction increased to 46.3% during one-lung ventilation. During two-lung ventilation, after chest closure, effective pulmonary capillary blood flow index divided by heart rate (i.e., effective pulmonary blood stroke flow index) was still significantly lower than that seen during two-lung ventilation before thoracotomy. There were significant correlations between e...Continue Reading

Citations

Oct 2, 2007·Journal of Cardiothoracic and Vascular Anesthesia·Ju-Mei NgThirugnanam Agasthian
Sep 22, 2005·Current Opinion in Critical Care·Bernard P Cholley, Didier Payen

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