scholarly journals Risk of bacteremia in patients presenting with shaking chills and vomiting - a prospective cohort study

2020 ◽  
Vol 148 ◽  
Author(s):  
M. Holmqvist ◽  
M. Inghammar ◽  
L. I. Påhlman ◽  
J. Boyd ◽  
P. Åkesson ◽  
...  
Keyword(s):  
Emergency Department ◽  
Logistic Regression ◽  
Blood Culture ◽  
Positive Blood Culture ◽  
Vital Sign ◽  
Bacterial Infections ◽  
Altered Mental Status ◽  
Negative Blood Culture ◽  
Multivariate Logistic Regression ◽  
Prospective Multicenter Study

Abstract Chills and vomiting have traditionally been associated with severe bacterial infections and bacteremia. However, few modern studies have in a prospective way evaluated the association of these signs with bacteremia, which is the aim of this prospective, multicenter study. Patients presenting to the emergency department with at least one affected vital sign (increased respiratory rate, increased heart rate, altered mental status, decreased blood pressure or decreased oxygen saturation) were included. A total of 479 patients were prospectively enrolled. Blood cultures were obtained from 197 patients. Of the 32 patients with a positive blood culture 11 patients (34%) had experienced shaking chills compared with 23 (14%) of the 165 patients with a negative blood culture, P = 0.009. A logistic regression was fitted to show the estimated odds ratio (OR) for a positive blood culture according to shaking chills. In a univariate model shaking chills had an OR of 3.23 (95% CI 1.35–7.52) and in a multivariate model the OR was 5.9 (95% CI 2.05–17.17) for those without prior antibiotics adjusted for age, sex, and prior antibiotics. The presence of vomiting was also addressed, but neither a univariate nor a multivariate logistic regression showed any association between vomiting and bacteremia. In conclusion, among patients at the emergency department with at least one affected vital sign, shaking chills but not vomiting were associated with bacteremia.

scholarly journals [18F]FDG hypermetabolisms of the spleen and/or bone marrow: indirect signs of bacteremia

2021 ◽  
Vol 22 (Supplement_3) ◽  
Author(s):  
R Zanca ◽  
F Bartoli ◽  
E Lazzeri ◽  
M Sollini ◽  
RHJA Slart ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Blood Culture ◽  
Positive Blood Culture ◽  
Test Procedure ◽  
Lumbar Vertebrae ◽  
Final Diagnosis ◽  
Negative Blood Culture ◽  
Suspected Infection ◽  
Significant Difference ◽  
18F Fdg

Abstract Funding Acknowledgements Type of funding sources: None. Aim Recently hypermetabolisms of the spleen and/or bone marrow has been proposed as an indirect sign of infective endocarditis (IE), useful to reinforce the suspicion of IE in the absence of any other infectious, inflammatory, or malignant disease. The purpose of this study is to determine whether hypermetabolisms of the spleen and/or bone marrow are indirect signs of bacteremia rather than of IE, specifically. Materials and Method In this work we retrospectively evaluated a series 240 patients who performed between January 2015 to December 2020 [18F]FDG PET/CT (Discovery 710 GE) for suspected infection. In particular, 80 pts had infections from different origin and a positive blood culture (PBC), 80 pts presented localized infection, but negative blood culture (IDBCN) and 80 pts were classified as definite IE (IED) according to the 2015 ESCcriteria. [18F]FDG SUVmax SUVmean in bone marrow, spleen and liver were measured drawind a 14 cm3 regions of interest (ROIs) positioned close to the centers of the spleen and of the right liver lobe, but excluding abscess and/or ischemic lesions., as previously described (Caroline Boursier et al. ; Jordy P.Pijl et al.). BM SUVmax and SUVmean was obtained from ROIs placed on the bodies of each of the five lumbar vertebrae, excluding any damaged vertebra. BM to liver SUV ratios (BLR) and spleen to liver SUV ratios (SLR) were calculated. Kruskal-Wallis tests and the Dunn’s test procedure for multiple comparison were performed using JMP Statistical Discoverytm. Results No significant difference among the three groups of SUVmax/mean or in SLR were found. Nevertheless, by grouping patients for the presence of positive blood culture (142 pts) or negative blood culture (98 pts), irrespectively from the final diagnosis a significant associations of SLR was found (p = 0.0070). No significant associations were found with BLR. Conclusions Based on our data SLR in seems to represent an indirect signs of bacteremia, rather than IE.

Sex-based differences in outcomes for adult patients presenting to the emergency department with a concussion

2021 ◽  
pp. 1-10
Author(s):  
Brian H. Rowe ◽  
Esther H. Yang ◽  
Lindsay A. Gaudet ◽  
Leeor Eliyahu ◽  
Daniela R. Junqueira ◽  
...  
Keyword(s):  
Emergency Department ◽  
Logistic Regression ◽  
Motor Vehicle ◽  
Adult Population ◽  
Treatment Options ◽  
Multivariate Logistic Regression Model ◽  
Adult Women ◽  
Multivariate Logistic Regression ◽  
Persistent Symptoms ◽  
Postconcussion Symptoms

OBJECTIVE Patients with concussion frequently present to the emergency department (ED). Studies of athletes and children indicate that concussion symptoms are often more severe and prolonged in females compared with males. Given infrequent study of concussion symptoms in the general adult population, the authors conducted a sex-based comparison of patients with concussion. METHODS Adults (≥ 17 years of age) presenting with concussion to one of three urban Canadian EDs were recruited. Discharged patients were contacted by telephone 30 and 90 days later to capture the extent of persistent postconcussion symptoms using the Rivermead Post Concussion Symptoms Questionnaire (RPQ). A multivariate logistic regression model for persistent symptoms that included biological sex was developed. RESULTS Overall, 250 patients were included; 131 (52%) were women, and the median age of women was significantly higher than that of men (40 vs 32 years). Women had higher RPQ scores at baseline (p < 0.001) and the 30-day follow-up (p = 0.001); this difference resolved by 90 days. The multivariate logistic regression identified that women, patients having a history of sleep disorder, and those presenting to the ED with concussions after a motor vehicle collision were more likely to experience persistent symptoms. CONCLUSIONS In a community concussion sample, inconsequential demographic differences existed between adult women and men on ED presentation. Based on self-reported and objective outcomes, work and daily activities may be more affected by concussion and persistent postconcussion symptoms for women than men. Further analysis of these differences is required to identify different treatment options and ensure adequate care and management of injury.

scholarly journals “A Four-Leaf Clover” Sign for Rapid Identification of Coagulase-Negative Staphylococci by Gram Staining From Positive Blood Culture: A Cross-Sectional Study

2020 ◽  
Author(s):  
Takahiro Matsuo ◽  
Kuniyoshi Hayashi ◽  
Aki Sakurai ◽  
Masumi Suzuki Shimizu ◽  
Masaya Morimoto ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Regression Analysis ◽  
Blood Culture ◽  
Positive Predictive Value ◽  
Positive Blood Culture ◽  
Predictive Value ◽  
Blood Cultures ◽  
Coagulase Negative Staphylococci ◽  
Gram Staining ◽  
Sensitivity Specificity

Abstract Background: Coagulase-negative staphylococci (CoNS) are one of the most common contaminant microorganisms isolated from blood cultures. Few studies exploring the use of Gram staining to distinguish between Staphylococcus aureus (SA) and CoNS have been reported. Here, this study aimed to explore whether morphological features of Gram staining could identify SA or CoNS.Methods: This study was conducted at St. Luke’s International Hospital from November 2016 to September 2017. The positive blood cultures for which the Gram staining showed gram-positive cocci (GPC) in clusters were included in our study. The direct smear of Gram staining obtained from positive blood culture bottles were examined within 24 hours of positivity. We have identified and characterized the following two signs: “four-leaf clover (FLC)” if 4 GPC gathered like a planar four-leaf clover and “grapes” if the GPC gathered like grapes in a three-dimensional form. The number of fields with FLC and grapes signs in 10 fields per slide with ×1,000 power was counted, and the results in a total of 20 fields with ×1,000 power were combined. We performed a logistic regression analysis to assess whether these signs could serve as factors distinguishing between SA and CoNS. The predictive ability of these signs was evaluated based on the sensitivity, specificity, positive predictive value, and negative predictive value for CoNS via receiver operating curve analysis.Results: In total, 106 blood cultures for which Gram staining showed GPC in clusters were examined; 46 (43%) were SA, and 60 (57%) were CoNS samples. The result of multivariate logistic regression analysis showed that the FLC sign was a statistically significant marker of CoNS with an odds ratio of 1.31 (95 % confidential interval (CI): 1.07–1.61, p<0.05). In aerobic bottles, sensitivity, specificity, positive predictive value, and negative predictive value for CoNS were 0.67, 0.91, 0.92, and 0.65, respectively, and the value of area under the curve was 0.79 (95% CI: 0.67–0.91).Conclusions: To our knowledge, this is the first study to show that the FLC could be a rapid and useful indicator to identify CoNS in aerobic bottles. Thus, the presence of FLC sings could help clinicians to suspect the possibility of CoNS before the final identification by cultures.

scholarly journals Study of procalcitonin in neonatal sepsis with blood culture in suspected sepsis in North India

2021 ◽  
Vol 8 (7) ◽  
pp. 1241
Author(s):  
Munna Lal Jaipal ◽  
Ajit Kumar Shrivastava ◽  
Prema Ram Choudhary
Keyword(s):  
Blood Culture ◽  
Positive Blood Culture ◽  
Tertiary Care ◽  
Clinical Signs ◽  
North India ◽  
Care Hospital ◽  
Negative Blood Culture ◽  
Suspected Sepsis ◽  
Cross Sectional ◽  
Number Of Patients

Background: Sepsis can occasionally be difficult to demonstrate, and its difference from non-infectious conditions in critically ill patients is often a challenge. Serum procalcitonin (PCT) assay is one of the biomarkers of sepsis. The aim of the study was to investigate the value of procalcitonin, in the early diagnosis of neonatal sepsis.Methods: A cross-sectional study was conducted at tertiary care hospital in New Delhi. It included all neonates with clinical signs of sepsis. The neonates were divided into two groups as sepsis, and healthy neonates. The PCT level was measured by using ELISA technique and compared between the two groups. Statistical analysis was performed using SPSS windows version 20.0 software.Results: In this study total number of patients included 350, out of which 175 were clinically suspected sepsis cases and 175 were healthy controls. 68 (39%) neonates were show positive blood culture and 107 (61%) neonates were representing negative blood culture report in study group. The mean serum value of PCT was significantly (p<0.001) higher in sepsis neonates. The serum PCT value was significantly increased in neonate’s sepsis with positive blood culture (p<0.001) and negative blood culture (p<0.001) as compared to healthy neonates.Conclusions: It is concluded from this study that the PCT assay was established to be a valuable biomarker of sepsis in this study. The assay might be performed and reported quickly and gave precious information before availability of culture results. This might assist in avoiding unnecessary antibiotic therapy.

scholarly journals 112. Physiological Signature of Bloodstream Infection in Critically Ill Patients

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S87-S88
Author(s):  
Alex Zimmet ◽  
Matthew Clark ◽  
Shrirang M Gadrey ◽  
Taison Bell ◽  
J Randall Moorman ◽  
...  
Keyword(s):  
Blood Culture ◽  
Bloodstream Infection ◽  
Critically Ill ◽  
Positive Blood Culture ◽  
Critically Ill Patients ◽  
Vital Sign ◽  
Physiological Data ◽  
Surgical Trauma ◽  
Critically Ill Adults ◽  
Ill Adults

Abstract Background Bloodstream infection (BSI) is associated with high mortality rates in critically ill patients but is difficult to identify clinically. This uncertainty results in frequent blood culture testing, which exposes patients to additional costs and the potential harms of unnecessary antibiotics. Accordingly, we aimed to identify signatures in physiological data from critically ill adults that characterize BSI. Methods We reviewed all blood culture, vital sign, laboratory, and cardiorespiratory monitoring (CRM) data from patients admitted to the medical and surgical/trauma ICUs at the University of Virginia Medical Center from February 2011 to June 2015. Blood culture results were categorized as positive, negative, or contaminant. For the BSI population, we included data obtained within 12 hours before or 24 hours after the acquisition of a positive blood culture. The control population included data greater than 12 hours before or 24 hours after the acquisition of a positive blood culture, and all data from patients without BSI. We used multivariable logistic regression to identify the physiological characteristics of BSI. Results We analyzed 9,955 ICU admissions with 144 patient-years of vital sign and CRM data (1.3M hourly measurements). The average age was 59 years; the population was mostly Caucasian (81%) and male (56%). There were 5,671 (57%) admissions with ≥1 blood culture, and 744 (7%) had a BSI. The in-hospital mortality rate for patients with BSI was 28% vs. 12% for all others. The physiological signature of BSI was characterized by abnormalities in 12 parameters (Figure 1)—e.g., BSI was more likely in patients with a higher pulse and lower platelets. Several associations were nonlinear—e.g., temperature and WBC had U-shaped relationships with BSI. The internally validated C-statistic was 0.77. Conclusion Statistical modeling revealed a clinically sensible physiological signature of BSI that could assist with bedside decisions regarding the utility of blood culture testing in critically ill adults. Disclosures All authors: No reported disclosures.

scholarly journals Identification of Gram-Negative Bacteria and Genetic Resistance Determinants from Positive Blood Culture Broths by Use of the Verigene Gram-Negative Blood Culture Multiplex Microarray-Based Molecular Assay

2015 ◽  
Vol 53 (8) ◽  
pp. 2460-2472 ◽  
Author(s):  
Nathan A. Ledeboer ◽  
Bert K. Lopansri ◽  
Neelam Dhiman ◽  
Robert Cavagnolo ◽  
Karen C. Carroll ◽  
...  
Keyword(s):  
Blood Culture ◽  
Positive Blood Culture ◽  
Klebsiella Oxytoca ◽  
Genetic Resistance ◽  
Reference Method ◽  
Negative Blood Culture ◽  
Gram Negative ◽  
Content Type ◽  
Resistance Determinants ◽  
Percent Agreement

Bloodstream infection is a serious condition associated with significant morbidity and mortality. The outcome of these infections can be positively affected by the early implementation of effective antibiotic therapy based on the identification of the infecting organism and genetic markers associated with antibiotic resistance. In this study, we evaluated the microarray-based Verigene Gram-negative blood culture (BC-GN) assay in the identification of 8 genus or species targets and 6 genetic resistance determinants in positive blood culture broths. A total of 1,847 blood cultures containing Gram-negative organisms were tested using the BC-GN assay. This comprised 729 prospective fresh, 781 prospective or retrospective frozen, and 337 simulated cultures representing 7 types of aerobic culture media. The results were compared to those with standard bacterial culture and biochemical identification with nucleic acid sequence confirmation of the resistance determinants. Among monomicrobial cultures, the positive percent agreement (PPA) of the BC-GN assay with the reference method was as follows; Escherichia coli , 100%; Klebsiella pneumoniae , 92.9%; Klebsiella oxytoca , 95.5%; Enterobacter spp., 99.3%; Pseudomonas aeruginosa , 98.9%; Proteus spp., 100%; Acinetobacter spp., 98.4%; and Citrobacter spp., 100%. All organism identification targets demonstrated >99.5% negative percent agreement (NPA) with the reference method. Of note, 25/26 cultures containing K. pneumoniae that were reported as not detected by the BC-GN assay were subsequently identified as Klebsiella variicola . The PPA for identification of resistance determinants was as follows; bla CTX-M , 98.9%; bla KPC , 100%; bla NDM , 96.2%; bla OXA , 94.3%; bla VIM , 100%; and bla IMP , 100%. All resistance determinant targets demonstrated >99.9% NPA. Among polymicrobial specimens, the BC-GN assay correctly identified at least one organism in 95.4% of the broths and correctly identified all organisms present in 54.5% of the broths. The sample-to-result processing and automated reading of the detection microarray results enables results within 2 h of culture positivity.

scholarly journals Predictive Factors and Clinical Prediction Score for Serious Intracranial Causes in Acute Nontraumatic Headache at an Emergency Department

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Siriwimon Tantarattanapong ◽  
Lalita Chalongkulasak
Keyword(s):  
Emergency Department ◽  
Logistic Regression ◽  
Predictive Factors ◽  
Neurological Deficit ◽  
Abrupt Onset ◽  
Prediction Score ◽  
Clinical Prediction ◽  
Multivariate Logistic Regression ◽  
Alteration Of Consciousness ◽  
Significant Factors

Purpose. The objectives of this study were to investigate the predictive factors and develop a clinical prediction score to identify serious intracranial causes in acute nontraumatic headache (NTH). Methods. A retrospective chart review study was conducted from 2013 to 2018 in acute NTH patients who visited the emergency department. The patients were divided into serious intracranial headache and nonserious intracranial headache groups. The two groups were compared in regard to the baseline characteristics, clinical presentation, physical examination, investigation, and diagnosis. The significant factors to predict a serious intracranial cause were examined using a multivariate logistic regression model. The coefficients from the multivariate logistic regression were used to plot the receiver operating characteristic curve to develop a clinical prediction score. Results. From 2,372 patients, 454 met the inclusion criteria. Of the 454 patients with acute NTH, 88 (19.4%) patients were serious intracranial cause. The seven significant factors that predicted serious intracranial cause were abrupt onset (odds ratio (OR) 7.96, 95% confidence interval (CI) 2.77‒22.91), awakening pain (OR 3.14, 95% CI 4.15–6.82), duration of headache >1 week (OR 10.59, 95% CI 2.9–38.7), fever (OR 6.01, 95% CI 2.07–17.46), worst headache ever (OR 12.95, 95% CI 5.69–29.45), alteration of consciousness (OR 13.55, 95% CI 2.07‒88.88), and localizing neurological deficit (OR 5.28, 95% CI 1.6‒17.46). A score ≥3 out of 10 points of the clinical prediction score was likely to identify a serious intracranial cause of acute NTH with a sensitivity and specificity of 87.50% (95% CI 78.73–93.59%) and 87.70% (95% CI 83.90–90.89%), respectively. The area under the curve was 0.933. Conclusion. Abrupt onset, awakening pain, duration of headache >1 week, fever, worst headache ever, alteration of consciousness, and localizing neurological deficit were the significant predictive factors for serious intracranial cause of acute NTH.

scholarly journals Blood Culture Contamination in a Community Hospital- less than 2% is achievable

2021 ◽  
Vol 156 (Supplement_1) ◽  
pp. S127-S127
Author(s):  
R Bedi ◽  
J Atkinson
Keyword(s):  
Emergency Department ◽  
Blood Culture ◽  
Positive Blood Culture ◽  
Antimicrobial Therapy ◽  
False Positive ◽  
Community Hospital ◽  
Blood Cultures ◽  
Proper Order ◽  
Multiple Devices ◽  
American Society

Abstract Introduction/Objective Blood cultures are commonly obtained to evaluate the presence of bacteria or fungal infection in a patient’s bloodstream. The presence of living microorganisms circulating in the bloodstream is of substantial prognostic and diagnostic importance. A positive blood culture indicates a reason for the patient’s illness and provides the etiological agent for antimicrobial therapy. Collection of blood culture is an exact process that requires time, the proper order of draw, and following of correct protocol. The busy Emergency department that requires multiple demands for nurse’s time, turnover of staff, rushing from one task to another can result in the improper collection and false-positive blood cultures. The national benchmark is set at 3% by the American Society of Clinical Microbiology (ASM) and The Clinical and Laboratory Standard Institute (CLSI). False-positive blood culture results in increased length of stay and unnecessary antimicrobial therapy, resulting in an increased cost burden to the hospital of about $5000 per patient. Methods/Case Report At our 150-bed community hospital, 26 beds Emergency Department, we have come a long way in reduction of our blood culture contamination rates from upwards of 4% to less than 2%, far lower than the national benchmark. Results (if a Case Study enter NA) NA Conclusion There are multiple devices available from various manufacturers claiming to reduce blood culture contamination. These devices do reduce blood culture (BC) contamination but at an added cost of the device. The rate of BC can be reduced and less than 3% is achievable by materials available in the laboratory. We have achieved this by providing training to every new staff by demonstration and direct observation, providing everything required for collection in a kit, using proper technique, the inclusion of diversion method that involves the aseptic collection of a clear tube before collecting blood cultures, and following up monthly on any false positive blood cultures.

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