PO2 electrode output and calculatedPO2 values
| O2 fraction . | Mean probe output . | Expected PO2 (mmHg) . | Calculated PO2 (0, 21% data) . | Calculated PO2 (0, 3, 21% data) . |
|---|---|---|---|---|
| 0% | 2±1 (N=3) | 0 | 0 | 0 |
| 3% | 76±1 (N=3) | 21 | 21 | 21 |
| 21% | 519±3 (N=4) | 148 | 148 | 148 |
| O2 fraction . | Mean probe output . | Expected PO2 (mmHg) . | Calculated PO2 (0, 21% data) . | Calculated PO2 (0, 3, 21% data) . |
|---|---|---|---|---|
| 0% | 2±1 (N=3) | 0 | 0 | 0 |
| 3% | 76±1 (N=3) | 21 | 21 | 21 |
| 21% | 519±3 (N=4) | 148 | 148 | 148 |
Expected and calculated PO2 values at hour 0 for one O2 electrode's output. Values are in mmHg (1 mmHg=0.133 kPa). Probe output is expressed as mean ± s.d. N = number of exposures to a given % O2. Regression equations were calculated from 0 and 21% O2 data(y=0.29x-0.67, r2=1.0) or from 0, 3 and 21%O2 data (y=0.29x-0.73, r2=1.0).