Postoperative immunosuppression markers and the occurrence of sepsis in patients with benign and malignant disease.

AIM: To investigate associations between the postoperative immune response and the levels of extracellular circulating DNA (cDNA), C-reactive protein (CRP), neutrophil/lymphocyte (N/L) ratio, and regulatory T (Treg) cells in the peripheral blood and their role as potential predictors of postoperative septic complications. METHODS: This was a prospective observational study involving 115 adult patients who underwent elective surgery. Patients were divided into three groups: with benign disease, with malignant disease, and with malignant disease and administration of dexamethasone. Serum CRP levels, N/L ratio, monocyte human leukocyte antigen-DR (HLA-DR) expression, proportion of Treg cells, and cDNA levels were measured at different time points before and after surgery. RESULTS: All patients had increased CRP levels after surgery. Septic patients had higher serum CRP levels at baseline. Compared with the other groups, the dexamethasone group had significantly higher CRP levels before and after surgery, a significantly higher N/L ratio before surgery, a significantly lower rise in the N/L ratio after surgery, and a significantly lower HLA-DR expression at baseline, which remained stable after surgery. In the malignant-disease group, we observed a significant postoperative decrease in the HLA-DR expression. CONCLUSIONS: Our results suggest that the immunosuppressive effect of surgery and the presence of a malignant disease may contribute to a higher risk of postoperative sepsis. Preoperative CRP levels may be a reliable predictor of sepsis in oncological patients.

Kinetics of changes in serum concentrations of procalcitonin, interleukin-6, and C- reactive protein after elective abdominal surgery. Can it be used to detect postoperative complications?

Postoperative increase in inflammation biologic markers is associated with a nonspecific inflammatory response to a surgical injury. We investigated the kinetics of changes in serum concentrations of procalcitonin (PCT), C-reactive protein (CRP) and interleukin-6 (IL-6) after abdominal surgeries and we focused on the behaviour of those markers in the case of development of the systemic inflammatory response syndrome (SIRS). In the single centre we conducted a prospective observational study and we included patients admitted to the ICU after elective abdominal surgery. A total of 41 patients were included and 8 (19.5%) of them had clinical and laboratory signs of SIRS. Sepsis was confirmed in one of the patients, a 72-year old patient operated due to having an abdominal aortic aneurysm. Plasma concentrations of PCT, CRP and IL-6 were measured in all the patients before surgery and at the postoperative day 1 (POD1), postoperative day 2 (POD2) and postoperative day 3 (POD3). Systemic release of PCT, CRP and IL-6 was present in all the measured time points after the abdominal surgery. Median concentrations of IL-6 (100.4 pg/mL) and PCT (1, 17 pg/mL) production were measured highest at POD1 and the median of CRP (147 mg/L) was measured at highest POD2. A larger increase of all three measured markers was found in patients with SIRS compared to those without. IL-6 at POD1 and POD2 was a good predictor of SIRS (areas under curves were 0.71 and 0.765, respectively), showing the highest accuracy among investigated markers at those time points. CRP at POD3 was a good predictor of SIRS (AUC was 0.76). A cut-off of 95 mg/mL in the level of CRP at POD3 yielded a sensitivity of 87.5% and specificity of 66.7% in detecting SIRS. IL-6 and CRP were the best in detecting postoperative SIRS after abdominal surgery with the highest area under ROC curve. This study is showing that PCT is not a good marker of SIRS caused only by surgical injury without sepsis.

Thrombosis of the internal jugular vein after tympanoplasty caused by interaction of oral contraceptives and hereditary hypofibrinolysis.

This case report describes a case of venous thrombosis in a young woman who had undergone tympanoplasty due to chronic otitis media. Other than that she was healthy. According to the anamnesis she stopped taking oral contraceptive pills (OCP) a month before the surgery. She did not receive thromboprophylaxis before the surgery because it was estimated that there was a low risk for a thromboembolic incident. Several hours after the surgery she was still not responding properly to external stimulus and there was no verbal contact. An urgent computed tomography (CT) scan of head and neck revealed thrombosis of the left internal jugular vein. She was admitted to the Intensive Care Unit (ICU) and heparin therapy started. After a few days she was fully recovered. Later it was confirmed that the patient had an inherited fibrinolysis disorder caused by plasminogen activator inhibitor 1 (PAI-1) gene polymorphism. Our opinion is that the unexpected thrombotic incident was a result of interaction of multiple factors, including the venous stasis at the surgery site, decreased fibrinolysis ability, and the prothrombotic effect of OCP.

Fatal fulminant sepsis due to a cat bite in an immunocompromised patient.

Pasteurella multocida infections in humans can present as localized infections of soft tissues surrounding the lesions, as respiratory tract infections or as systemic infections with slow or fulminant development. Over 90% of human infections are cases of wound infections or abscesses related to a bite, scratch, or licking of skin lesions by a cat or dog. Severe systemic diseases such as pneumonia, lung abscess, peritonitis, endocarditis, meningitis and sepsis are also well known, especially in patients with underlying medical conditions. In this paper we report on an immunocompromised patient who was bitten by an unknown cat and very quickly developed fulminant sepsis, dying 70 hours after the cat bite, despite all the intensive care, therapy and reanimation he was given. Unfortunately, he asked for medical help too late. We emphasize the need for primary healthcare to provide more information to patients at risk of infections from contact with animals and to warn them about the possible consequences of injuries, even when the animals are pets.