Septic shock can produce an identical CT picture to severe hypovolemia shock (ie CT hypotension complex) except in sepsis, the aorta is not reduced in caliber and the IVC is not slit-like as blood volume is normal.  In this case, there is infection in the endometrium (endometritis) extending into the myometrium secondary to prolonged foetal death.  The common organism that causes such sepsis is Group A beta-hemolytic Streptococcus pyogenes.  If septic shock ensues, it is often fatal.