Blood loss may be either acute or chronic. In either case
the source of bleeding must be determined.
When the loss is acute the site of bleeding is usually readily
apparent, but may be difficult to recognize, ie. ectopic pregnancy,
deep tissue hemorrhage, or aortic aneurysm rupture.
When blood loss is >1 Liter shock is likely. In the period immediately
after the acute bleed the Hct, MCV, and peripheral smear are generally
normal. Two - three days later reticulocytes will be present.
There is ...
Scarce blood enough in all their sticky veins
To give each naked curtleaxe a stain.