Packed cell volume of a man was 40% before the trauma. What packed cell volume will be observed 24 hours after blood loss of 750 m

Answer options

1. 45%
2. 40%
3. 30%
4. 55%
5. 50%

Explanation

Blood loss during trauma results in loss of all components of blood (cells and liquid). Packed cell volume or hematocrit value will therefore decrease. Erythropoiesis cannot replace all cells lost in 24hours so the packed cell volume will not be up to 40% after 24hours of blood loss of 750ml. It will actually be lower hence the best answer here will be 30%.