Absolute counts of peripheral blood leukocyte subpopulations in intraabdominal sepsis and pneumonia-derived sepsis: a pilot study.

The leading pathophysiological changes during sepsis include systemic abnormalities in the immune response. Due to the general character of these disturbances, sepsis is usually studied as a homogenous clinical condition. We aimed to compare the immune response in intraabdominal sepsis (IAS) and pneumonia-derived sepsis (PDS).