Research Article
End-Tidal Carbon Dioxide Monitoring for Spontaneous Pneumothorax
Table 2
Comparison of CO2 variables between PSP and SSP groups.
| | | Total | N | PSP | N | SSP | N | value |
| | Initial ETCO2 (mmHg) | 34 (30–38) | 50 | 35 (33–38) | 33 | 30 (23–33) | 17 | 0.002 | | Initial PaCO2 (mmHg) | 38.6 (36.7–41.1) | 47 | 38.5 (36.7–41.0) | 31 | 39.6 (32.9–44.6) | 16 | 0.685 | | Pa-ETCO2 gradient (mmHg) | 5.6 (1.0–10.4) | 47 | 3.3 (0.6–6.7) | 31 | 11.4 (5.7–18.3) | 16 | 0.001 | | ETCO2 rise after air drainage (mmHg) | 2 (0–6) | 25 | 0 (0–3) | 16 | 6 (3–7) | 9 | 0.008 |
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Median (interquartile range); PSP, primary spontaneous pneumothorax; SSP, secondary spontaneous pneumothorax. |
