 CD4 count or CD4/CD8 ratio has been found to be a valuable marker of disease progression in HIV and AIDS.     ///    "Demographic and clinical information were entered into a database and included: type of surgical procedure, age, peripheral blood cells, plasma albumin, CD4 counts, and CD4/CD8 ratios. "    ///    "Likewise, the incidence of postoperative sepsis in the patients with preoperative CD4/CD8 ratios ? 0.15 was dramatically higher than those with CD4/CD8 ratios > 0.15 (90% versus 36%. "    ///    Preoperative CD4 count or CD4/CD8 ratio may be used as a useful indicator for postoperative sepsis in HIV-infected patients undergoing abdominal operations..     ///    "In sepsis group, the mean preoperative and postoperative CD4 counts, CD4/CD8 ratios, and postoperative platelet count were found significantly lower, respectively, than those in non-sepsis group (P < 0.05). "    ///    Preoperative CD4 count or CD4/CD8 ratio as a useful indicator for postoperative sepsis in HIV-infected patients undergoing abdominal operations..     ///    Our objective was to evaluate preoperative CD4 count or CD4/CD8 ratio as a useful indicator for postoperative sepsis in HIV-infected patients undergoing abdominal operations.     ///    Our preliminary study showed that HIV-infected patients with preoperative CD4 count ? 200 cells/?L or CD4/CD8 ratio ? 0.15 had overall higher postoperative sepsis morbidity.     ///    "Furthermore, we stratified and compared the incidence of postoperative sepsis according to the preoperative CD4 counts with breakpoint value of 200 cells/?L and preoperative CD4/CD8 ratios with breakpoint value of 0.15. "