Table 1. Laboratory Parameters.
Resuscitation 60 min |
Resuscitation 90 min |
|||||||
---|---|---|---|---|---|---|---|---|
Baseline | Shock | 0 μM | 10 μM | 50 μM | 0 μM | 10 μM | 50 μM | |
Hct, % | 49 ± 2 | 28 ± 1† | 23 ± 1† | 23 ± 1† | 22 ± 1 † | 22 ± 2† | 21 ± 2† | 21 ± 2 † |
Hb, g/dl | 14.7 ± 0.6 | 9.3 ± 0.4 † | 7.4 ± 0.3 † | 7.1 ± 0.4 † | 7.0 ± 0.4 † | 6.8 ± 0.4† | 6.8 ± 0.3† | 6.7 ± 0.4 † |
MetHb, % | -- | -- | -- | 2.7 ± 1.2 | 5.8 ± 1.8 | -- | 1.9 ± 1.1 | 3.1 ± 1.3 |
|
|
|
|
|
||||
Plasma Nitrite, nM | 442 ± 96 | 742 ± 128 | 804 ± 132 | 842 ± 124 | ||||
|
|
|
|
|
||||
PaO2, mmHg | 56.2 ± 6.2 | 87.4 ± 8.0† | 78.6 ± 6.7† | 68.8 ± 6.4† | 79.5 ± 7.4† | 76.3 ± 5.6† | 69.0 ± 6.1† | 68.3 ± 5.6† |
PaCO2, mmHg | 54.5 ± 5.2 | 38.2 ± 6.3† | 43.5 ± 3.5† | 47.1 ± 6.8 | 42.3 ± 3.8† | 41.5 ± 4.2† | 48.9 ± 4.9 | 46.4 ± 6.2 |
Arterial pH | 7.342 ± 0.017 | 7.207 ± 0.026† | 7.320 ± 0.027 | 7.351 ± 0.026 | 7.372 ± 0.027 | 7.322 ± 0.021 | 7.361 ± 0.018 | 7.385 ± 0.035 |
BE, mmol/l | 3.3 ± 1.7 | −4.8 ± 2.0† | −1.3 ± 1.4† | 1.6 ± 2.2 | −0.9 ± 1.7† | −2.4 ± 1.8† | 2.2 ± 1.9 | 1.6 ± 2.3 |
|
|
|
|
|
||||
Viscosity, cP | ||||||||
Blood | 4.2 ± 0.4 | 2.7 ± 0.3† | 2.6 ± 0.3† | 2.6 ± 0.3† | ||||
Plasma | 1.2 ± 0.1 | 1.5 ± 0.2† | 1.5 ± 0.2† | 1.4 ± 0.2† | ||||
COP, mmHg | 17.8 ± 1.6 | 17.1 ± 1.1 | 16.6 ± 0.9 | 16.7 ± 0.8 | ||||
|
|
|
|
|
0 μM, resuscitation followed by 100 μl saline without nitrite; 10 μM, resuscitation followed by 100 μl of 10μM nitrite in saline; 50 μM, resuscitation followed by 100 μl of 50μM nitrite in saline. Values are means ± SD. Baseline and shock included all the animals in the study. Hct, systemic hematocrit; Hb, hemoglobin content of blood; MeHb, fraction of methemoglobin; MAP, mean arterial blood pressure; PaO2, arterial partial O2 pressure; PaCO2, arterial partial pressure of CO2; BE, base excess. Shear rate of 160 s−1 at 37°C; COP, colloid osmotic pressure at 27°C. Values are means ± SD.
P<0.05 compared to Baseline.