[Correlation between hematocrit changes and the volume of circulating blood after hemorrhage]

Experiments on 49 unconscious have established that a considerable decrease in hematocrit values from 47 to 36% within the first 4-5 hours after blood loss (20 ml/kg) is associated with less longevity (r = 0.74; p < 0.01) and progressive hypovolemia (r = 0.30; p < 0.05) by depoting blood. A decrease in hematocrit values from 47 to 40% at min 20 following blood loss is an unfavourable predictor (r = 0.64; p < 0.01). The animals' longevity after blood flow is directly proportional to the volume of blood (r = 0.56; p < 0.01) and inversely proportionally to the baseline hematocrit values (r = 0.34; p < 0.05).