Niedokrwistości ze szczególnym uwzględnieniem anemii immunohemolitycznych – cz. I. Ostre przypadki hematologiczne od diagnozy do leczenia – na podstawie przypadków klinicznych
Acute blood loss
The HCT and plasma protein concentration are normal immediately after substantial acute blood loss, because there is a balanced loss of erythrocytes and plasma.
After several hours, the HCT value and plasma protein concentration decrease as fluid moves from the digestive tract and extravascular space into the circulation to restore normal blood volume.
If no further hemorrhage occurs, plasma protein concentration will return to normal within a few days. Consequently, the occurrence of ow plasma protein concentration in association with anemia suggests the presence of recent or ongoing hemorrhage.
Considerably more time is required for the HCT to return to normal than is required for the plasma protein concentration to return to normal. The HCT value increases by approximately 1% per day.
The anemia appears nonregenerative shortly after blood loss because bone marrow requires approximately 4 days to produce reticulocytes. MCV may not be increased following blood loss in animals because the reticulocyte response may not be of sufficient magnitude to result in a high MCV value (4).
Chronic blood loss
Chronic external blood loss can result in iron deficiency. Iron deficiency anemia is common in adult dogs but rarely occurs in cats.
If [...]
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