An Algorithm for Systemic Inflammatory Response Syndrome Criteria–Based Prediction of Sepsis in a Polytrauma Cohort*
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Lifesaving early distinction of infectious systemic inflammatory response syndrome, known as "sepsis," from noninfectious systemic inflammatory response syndrome is challenging in the ICU because of high systemic inflammatory response syndrome prevalence and lack of specific biomarkers. The purpose of this study was to use an automatic algorithm to detect systemic inflammatory response syndrome criteria (tachycardia, tachypnea, leukocytosis, and fever) in surgical ICU patients for ICU-wide systemic inflammatory response syndrome prevalence determination and evaluation of algorithm-derived systemic inflammatory response syndrome descriptors for sepsis prediction and diagnosis in a polytrauma cohort.Cross-sectional descriptive study and retrospective cohort study.Electronic medical records of a tertiary care center's surgical ICU, 2006-2011.All ICU admissions and consecutive polytrauma admissions.None.Average prevalence of conventional systemic inflammatory response syndrome (≥ 2 criteria met concomitantly) from cross-sectional application of the algorithm to all ICU patients and each minute of the study period was 43.3%. Of 256 validated polytrauma patients, 85 developed sepsis (33.2%). Three systemic inflammatory response syndrome descriptors summarized the 24 hours after admission and before therapy initiation: 1) systemic inflammatory response syndrome criteria average for systemic inflammatory response syndrome quantification over time, 2) first-to-last minute difference for trend detection, and 3) change count reflecting systemic inflammatory response syndrome criteria fluctuation. Conventional systemic inflammatory response syndrome for greater than or equal to 1 minute had 91% sensitivity and 19% specificity, whereas a systemic inflammatory response syndrome criteria average cutoff value of 1.72 had 51% sensitivity and 77% specificity for sepsis prediction. For sepsis diagnosis, systemic inflammatory response syndrome criteria average and first-to-last minute difference combined yielded 82% sensitivity and 71% specificity compared with 99% sensitivity and only 31% specificity of conventional systemic inflammatory response syndrome from a nested case-control analysis.Dynamic systemic inflammatory response syndrome descriptors improved specificity of sepsis prediction and particularly diagnosis, rivaling established biomarkers, in a polytrauma cohort. They may enhance electronic sepsis surveillance once evaluated in other patient populations.Keywords:
Polytrauma
Tachypnea
Leukocytosis
Systemic inflammatory response syndrome (SIRS) is characterized by body temperature abnormalities, tachypnea or hyperventilation, tachycardia, and leukocytosis or leukopenia. Although it is typically associated with a serious infection and referred to as sepsis, SIRS can stem from noninfectious causes, as well. We report the cases of four patients with toxic serum levels of salicylate (33.5 to 67.6 mg/dL) and SIRS, and we discuss mechanisms responsible for SIRS. Our patients showed temperature disturbances (35.5 degrees C to 39.8 degrees C), noncardiogenic pulmonary edema, and mixed acid base disturbances. Other abnormalities included coagulopathy (disseminated intravascular coagulation), encephalopathy, and hypotension. All four patients recovered from SIRS, probably due to early recognition and treatment; only one patient did not survive the hospitalization. Chronic salicylate toxicity should be considered as a cause of SIRS in the absence of a source of infection, since survival appears to be dependent on prompt diagnosis and management.
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A 7-year-old boy with high grade fever (39°C) and warm, erythematous, and indurated plaque above the left knee was referred. According to the previous records of this patient, these indurated plaques had been changed toward abscesses formation and then spontaneous drainage had occurred after about 6 to 7 days, and finally these lesions healed with scars. In multiple previous admissions, high grade fever, leukocytosis, and a noticeable increase in erythrocyte sedimentation rate and C-reactive protein were noted. After that, until 7th year of age, he had shoulder, gluteal, splenic, kidney, and left thigh lesions and pneumonia. The methylprednisolone pulse (30 mg/kg) was initiated with the diagnosis of Sweet’s syndrome. After about 10–14 days, almost all of the laboratory data regressed to nearly normal limits. After about 5 months, he was admitted again with tachypnea and high grade fever and leukocytosis. After infusion of one methylprednisolone pulse, the fever and tachypnea resolved rapidly in about 24 hours. In this admission, colchicine (1 mg/kg) was added to the oral prednisolone after discharge. In the periodic fever and neutrophilic dermatosis, the rheumatologist should search for sterile abscesses in other organs.
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BACKGROUND: Acute care surgeons are uniquely aware of the importance of systemic inflammatory response and its influence on postoperative outcomes; concepts like damage control have evolved from this experience. For surgeons whose practice is mostly elective, the significance of such systemic inflammation may be underappreciated. This study sought to determine the influence of preoperative systemic inflammation on postoperative outcome in patients requiring emergent colon surgery. METHODS: Emergent colorectal operations were identified in the American College of Surgeons National Surgical Quality Improvement Program 2008 dataset. Four groups were defined by the presence and magnitude of the inflammatory response before operation: no inflammation, systemic inflammatory response syndrome (SIRS), sepsis, or severe sepsis/septic shock. Thirty-day survival was analyzed by Kaplan-Meier method. RESULTS: A total of 3,305 patients were identified. Thirty-day survival was significantly different (p < 0.0001) among the four groups; increasing magnitudes of preoperative inflammation had increasing probability of mortality (p < 0.0001). Hazard ratios indicated that, compared with patients without preoperative systemic inflammation, the relative risk of death from SIRS was 1.9 (p < 0.0001), from sepsis was 2.5 (p < 0.0001), and from severe sepsis/septic shock was 6.7 (p < 0.0001). Operative time of <150 minutes was associated with decreased risk of morbidity (odds ratio = 0.64; p < 0.0001). CONCLUSIONS: Upregulation of the systemic inflammatory response is the primary contributor to death in emergency surgical patients. In SIRS or sepsis patients, operations <2.5 hours are associated with fewer postoperative complications. These results further reinforce the concept of timely surgical intervention and suggest a potential role for damage control operations in emergency general surgery. LEVEL OF EVIDENCE: II, prognostic study.
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Background/Objective: In intracerebral hemorrhage (ICH) patients, the significance of leukocytosis on admission is unknown. Theories range from primary infection to acute inflammatory response. The aim of this study was to determine the prevalence of admission leukocytosis and systemic inflammatory response syndrome (SIRS) in ICH patients and its association with primary infection. Methods: We retrospectively reviewed the records of 213 consecutive ICH patients admitted to a single tertiary care center from October 2011 through January 2014. Thirty-four were excluded based on inadequate data or withdrawal of care within 6 hours of admission. Patients with admission leukocytosis (leukocytes 蠅 12.0 within the first 24 hours of admission [WBCp24]) were identified. We collected patients' vital signs for identification of SIRS: peak/trough temperature, peak heart rate, and peak respiratory rate within the first 24 hours of admission. Microbiological data within the first 48 hours of admission and final body-fluid cultures within the first week of admission (Cx7) were recorded. Results:Of the 179 ICH patients, 46 (34[percnt]) presented with WBCp24. Mean WBCp24 was 15 ± 3.542. Ninety-one percent (42/46) met the criteria for SIRS. In 12 (26[percnt]) patients, no cultures sent (of which only 1 did not meet SIRS criteria). Only 13/34 patients (38[percnt]) had positive Cx7. Conclusions:Less than half of ICH patients with WBCp24 have positive Cx7. This is despite the over-whelming majority meeting SIRS criteria. WBCp24 may therefore be more often an indicative of acute inflammatory response to ICH than primary infection. Large-scale studies are needed to determine the impact of SIRS and leukocytosis on outcome in ICH patients.
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ABSTRACT Objective: To evaluate inflammatory signs presented in medical records of patients with a main diagnosis of epileptic seizures, admitted in an emergency unit. Method: Cross-sectional and retrospective study. The sample was composed of 191 medical records, from children, adolescents, adults, and elders, with a clinical diagnosis of epileptic seizures, admitted between June 2016 and June 2017 at the emergency unit of a hospital in Porto Alegre/RS. Results: The prevalent inflammatory signs were tachypnea (33.5%) and/or fever (27.2%) associated with leukocytosis (P=0.030). Children/adolescents had seizures less frequently (P=0.010) and these were due to fever (P=0.000). Adults presented seizures more frequently (P=0.006), which were related to medication/intoxication (P=0.000). In elders, seizures occurred due to metabolic or circulatory abnormalities (P=0.000), less often due to fever (P=0.005). Conclusion: Seizures are related to fever and tachypnea, being caused by different etiologies according to age, being more frequent in adults. Fever is related to leukocytosis, regardless of age.
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Systemic Inflammatory Response Syndrome (SIRS) was first recognized as a separate clinical entity when invading micro-organism which first caused a local inflammation overwhelmed our body’s defenses and began to invade the blood stream causing a much graver systemic condition, often endangering the patient’s life. It was then known variously as sepsis or septicaemia. When it became clear that the same systemic response could be elicited by other conditions other than microbial invasion a new term was coined systemic inflammatory response syndrome (SIRS)
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Introduction: Systemic inflammatory response syndrome symptoms immediately after surgery have lately been regarded as potential warnings of impending post-operative complications and multiple organ failure. This study was conducted to find out the clinical significance of systemic inflammatory response syndrome in postoperative patients and to investigate the relationship between the duration of post-operative systemic inflammatory response syndrome and the post-operative morbidity and mortality.Methods: Total 30 patients who received different gastrointestinal surgery and fulfilled the diagnostic criteria for systemic inflammatory response syndrome between 2006 and 2008 at Kathmandu Medical College Teaching Hospital were included. Patients were analyzed for preoperative physiologic status, surgical stress parameters, and postoperative status of systemic inflammatory response syndrome, complications, and end-organ dysfunction.Results: Duration of systemic inflammatory response syndrome or positive criteria's number of systemic inflammatory response syndrome after surgery significantly correlated with surgical stress parameters (blood loss/body weight and operation time). Septic complications and prolongation of systemic inflammatory response syndrome were associated with multiple organ dysfunction syndrome and increased mortality.Conclusions: Systemic inflammatory response syndrome is a useful criterion for the recognition of postoperative complications and end-organ dysfunctions. Early recovery from systemic inflammatory response syndrome may arrest the progression of organ dysfunction, thus reducing the mortality.Keywords: gastrointestinal surgery; multiple organ dysfunction syndrome; systemic inflammatory response syndrome. [PubMed]
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