Table 3.
Effects of pO2 and Plasma Osmolality on T1 of Whole Blood and Plasma.
| Anticoagulant conc. |
Osmolality (mOsm·kg−1) |
Y | pO2 (mmHg) |
R1 (s−1) |
T1 (ms) |
|
|---|---|---|---|---|---|---|
| Whole Blood (Hct = 0.45a) | ||||||
| Li+ heparin | 52 units/mL | 264 | 0.72 | 37 | 0.469 | 2133 |
| 1 | 62 | 0.456 | 2199 | |||
| 1 | 280 | 0.491 | 2037 | |||
| 3Na+ citrate | 25 mM | 381 | 0.74 | 42 | 0.473 | 2115 |
| 1 | 109 | 0.462 | 2163 | |||
| 1 | 273 | 0.499 | 2003 | |||
| 3Na+ citrate | 50 mM | 517 | 0.73 | 44 | 0.505 | 1979 |
| 1 | 262 | 0.527 | 1898 | |||
| Plasma | ||||||
| 3Na+ citrate | 25 mM | 374 | N/A | 87 | 0.322 | 3104 |
| N/A | 107 | 0.330 | 3028 | |||
| N/A | 167 | 0.339 | 2948 | |||
a
Hct value reported by the blood gas analyzer was based on a standardized MCHC of 33.86 g/dL. So it does not reflect the higher MCHC and the lower Hct expected with the higher plasma osmolality.