Table 1 |
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|
Measured and calculated indices of respiratory function during translaryngeal and tracheal intubation |
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|
Parameter |
Translaryngeal intubation |
Tracheal intubation |
Change from translaryngeal (%) |
P |
|
|
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|
Ers (hPa l-1) |
27.86 ± 11.390 |
29.73 ± 12.589 |
7.05 ± 11.283 |
<0.001 |
|
Rrs (hPa l-1 s-1) |
15.88 ± 6.381 |
13.43 ± 6.472 |
-15.84 ± 18.425 |
<0.001 |
|
Zrs (hPa l-1 s-1) |
24.35 ± 8.694 |
23.79 ± 9.012 |
-2.12 ± 12.036 |
>0.05 |
|
Xrs (hPa l-1 s-1) |
-18.00 ± 7.237 |
-19.08 ± 7.853 |
-6.34 ± 11.567 |
<0.001 |
|
φrs (degrees) |
-48.73 ± 10.005 |
-55.27 ± 11.547 |
-14.30 ± 16.820 |
<0.001 |
|
EEP (hPa) |
3.90 ± 2.929 |
3.99 ± 3.084 |
10.25 ± 100.022 |
>0.05 |
|
PaO2 (mmHg) |
104.84 ± 29.503 |
99.49 ± 32.012 |
-4.09 ± 26.358 |
>0.05 |
|
PaO2/FiO2 (mmHg/% O2) |
203.68 ± 72.871 |
194.11 ± 80.078 |
-2.79 ± 26.727 |
>0.05 |
|
PaCO2 (mmHg) |
39.96 ± 7.168 |
40.22 ± 8.587 |
0.94 ± 9.419 |
>0.05 |
|
pH |
7.39 ± 0.087 |
7.39 ± 0.105 |
-0.09 ± 0.469 |
>0.05 |
|
|
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|
Results are expressed as means ± standard deviations for all patients. EEP, end-expiratory pressure; Ers, respiratory system elastance; FiO2, fraction of inspired oxygen; φrs, pressure–flow phase angle; PaCO2, carbon dioxide tension of arterial blood; PaO2, oxygen tension of arterial blood; Rrs, respiratory system resistance ; Xrs, respiratory system reactance; Zrs, respiratory system impedance. |
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|
Amygdalou et al. Critical Care 2004 8:R243 doi:10.1186/cc2886 |
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