| Autor: |
Chubra-Smith, Normandie M., Grant, Raymer P., Jenkins, Leonard C. |
| Zdroj: |
Canadian Journal of Anesthesia; November 1986, Vol. 33 Issue: 6 p745-753, 9p |
| Abstrakt: |
Transcutaneous oxygen tension (PiCO2) was measured in 30 patients scheduled for elective pulmonary resection requiring one-lung ventilation during anaesthesia. Simultaneous PtcO2and arterial oxygen tension (PaO2) measurements were taken preoperatively (preop), intraoperatively during two-lung endotracheal (ET) and one-lung endobronchial ventilation (EB), and postoperatively (postop). There was a significant correlation (r) between PtcO2and PaO2at all time periods: 0.97 (preop); 0.91 (ET); 0.83 (EB);0.8I (postop). There were no significant differences among the transcutaneous oxygen indices (tcO2index = PtcO2IPaO2) in the preop (0.69 ± 0.09), ET (0.68 ± 0.10) andpostop (0.71 ± 0.12) time period. The tcO2index was significantly lower during one-lung anaesthesia (0.61 ± 0.14). The PtcO2was consistently lower than the corresponding PaO2measurement, thus providing a continuous estimation of the“minimum” PaO2level throughout anaesthesia and recovery. In four patients a marked drop in PtcO2occurred just after the initiation of one-lung ventilation. In three, this was associated with arterial hypoxaemia and in one, haemo-dynamic compromise. In all four cases the PtcO2was the first monitored parameter to change. As there is a substantial risk of developing hypoxaemia during thoracic anaesthesia, PtcO2monitoring provides valuable early warning of impending hypoxaemia or haemodynamic compromise, thereby facilitating early therapeutic intervention. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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