Table 2.
Responses to end-inspiratory apnea without packing (control apnea)
| Parameter, unit | Baseline | Δ1 min | P | ΔEnd of Apnea | P |
|---|---|---|---|---|---|
| SpO2, % | 99.1 ± 1.3 | 0.0 ± 0.0 | 0.23 | −17.6 ± 12.3 | <0.001 |
| CO, l/min | 8.6 ± 1.5 | −3.7 ± 1.8 | <0.0001 | −2.4 ± 1.3 | <0.0001 |
| MAP, mmHg | 98.2 ± 11.7 | 9.2 ± 8.3 | <0.01 | 40.4 ± 9.4 | <0.0001 |
| TPR, relative | 1.0 ± 0.0 | 2.1 ± 0.5 | <0.0001 | 2.2 ± 0.6 | <0.0001 |
| HR, beats/min | 76.5 ± 8.0 | 4.9 ± 13.6 | 0.20 | −10.5 ± 13.2 | <0.05 |
| MSNA, bursts/min | 19.2 ± 11.0 | 28.0 ± 11.8 | <0.0001 | 28.9 ± 16.2 | <0.0001 |
| MSNA, bursts/100 heart beats | 26.2 ± 15.2 | 32.8 ± 16.4 | <0.0001 | 53.4 ± 24.9 | <0.0001 |
| MSNA, au/min | 1.2 ± 1.0 | 3.3 ± 2.1 | <0.0001 | 13.1 ± 11.8 | <0.01 |
Values are means ± SD. SpO2, oxygen saturation of hemoglobin. For TPR, Δ1-min and Δend-apneic values are relative to baseline. P values are calculated against preapneic baseline.