1
|
Stephenson KJ, Shewmake CN, Spray BJ, Burford JM, Bonasso PC, Dassinger MS. The Sepsis Bundle Effect: An Evaluation of Culture Results and Utilization in Pediatric Appendicitis. Am Surg 2023; 89:4310-4315. [PMID: 35715017 DOI: 10.1177/00031348221109495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Sepsis prevention pathways, which often include blood and urine cultures, are common in children's hospitals. Fever and tachycardia, signs often seen in patients with appendicitis, frequently trigger these pathways. We hypothesized that cultures were frequently obtained in children with appendicitis. MATERIALS AND METHODS We conducted a single-center retrospective cohort study evaluating children with image-confirmed appendicitis from 4/1/2019 to 10/1/2020, coinciding with the initiation of sepsis prevention pathways. Factors associated with culture acquisition, as well as culture results, treatment, and outcomes were evaluated. RESULTS Six hundred and fifty eight children presented with acute appendicitis during the 1.5-year period, with a median age of 10.67 years (interquartile range (IQR) 8.17-14.08). Cultures were obtained in 22.9%, including blood culture (BCx) in 8.1% and urine culture (UCx) in 17.9%. Culture acquisition decreased by 17.6% after sepsis protocol initiation. Blood culture acquisition correlated with fever (P = .003) and younger age (P = .03), whereas the attainment of BCx and UCx was associated with female sex (P = .04, P < .0001), complicated appendicitis (P = .0001, P = .03), and unknown diagnosis (P < .0001, P < .0001). There were five positive UCx (4.24%); however, all remained asymptomatic despite a short antibiotic duration dictated by institutional appendicitis protocol. The one positive BCx (1.89%) was suspected contamination and not treated. DISCUSSION The findings of this cohort suggest a low incidence of positive culture as well as lack of impact on clinical management in image-proven appendicitis and the initiation of a sepsis bundle without automatic culture acquisition may result in decreased culture attainment.
Collapse
Affiliation(s)
- Krista J Stephenson
- Department of General Surgery, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Connor N Shewmake
- College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Beverly J Spray
- Biostatistics Core, Arkansas Children's Research Institute, Little Rock, AR, USA
| | - Jeffrey M Burford
- Department of Pediatric Surgery, Arkansas Children's Hospital, Little Rock, AR, USA
| | - Patrick C Bonasso
- Department of Pediatric Surgery, Arkansas Children's Hospital, Little Rock, AR, USA
| | - Melvin S Dassinger
- Department of Pediatric Surgery, Arkansas Children's Hospital, Little Rock, AR, USA
| |
Collapse
|
2
|
Sterk E, Wassermann T, Lamonge R, Semenchuck N, Rech MA. Overcultured? Blood cultures on discharged ED patients were ordered more frequently after the SEP-1 bundle initiation. Am J Emerg Med 2023; 67:84-89. [PMID: 36821960 PMCID: PMC10121910 DOI: 10.1016/j.ajem.2023.01.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 01/17/2023] [Accepted: 01/17/2023] [Indexed: 01/27/2023] Open
Abstract
INTRODUCTION In 2015, the Severe Sepsis and Early Septic Shock Management Bundle (SEP-1) tied hospital reimbursement to performance on a series of time sensitive indicators, including ordering blood cultures on patients with severe sepsis or septic shock. This metric could have broadly shaped ordering practices in the Emergency Department (ED), including for patients who did not have severe sepsis or septic shock. In this study, we sought to evaluate whether the frequency of blood culture orders on adult patients discharged from the ED changed after the SEP-1 metric, whether the rates of positivity for pathogens or contaminants changed after the SEP-1 metric, and whether similar changes were seen in orders for other laboratory tests. METHODS This was a retrospective evaluation of blood culture orders from discharged adult ED patients from a suburban academic hospital between January 1, 2012 and June 30, 2019. We compared the number of blood cultures per discharged adult patient before and after the SEP-1 metric. We categorized each culture that grew an organism as a pathogen or a contaminant, and we compared rates of pathogen and contaminant growth before and after SEP-1. We compared rates of orders of blood cultures and lactates as labs related to SEP-1 with rates of orders of D-dimers, lipases, human chorionic gonadotropins (HCGs), and brain natriuretic peptides (BNPs) as labs unrelated to SEP-1 before and after the implementation of the SEP-1 metric. RESULTS There were 144,343 adult patients discharged from the ED during the study period. A total of 6754 blood cultures were drawn from 3827 of those patient visits. The rate increased from 43.1 cultures per 1000 discharged patients before the SEP-1 metric to 75.9 blood cultures per 1000 discharged patients, an increase of 76.2% (p < 0.001). The cultures had a decreased rate of positivity (from 3.93% before SEP-1 to 3.03% after SEP-1, p = 0.044) and an unchanged rate of blood cultures resulting in a contaminant (2.49% to 1.85%, p = 0.071). Overall, orders of the labs unrelated to SEP-1 increased by an average of 16.8% after the SEP-1 metric and orders of the labs related to SEP-1 increased by an average of 81.0%. CONCLUSION After the SEP-1 bundle, blood cultures were ordered more frequently on discharged ED patients. These cultures had a lower rate of positivity for pathogens and an unchanged rate of growth of contaminants. This increase was not matched by a similar increase in other labs. Taken together, these findings suggest that the SEP-1 metric had the unintended consequence of increasing orders of blood cultures on patients healthy enough to be discharged from the ED.
Collapse
Affiliation(s)
- Ethan Sterk
- Loyola University Medical Center, Department of Emergency Medicine, Maywood, IL, United States of America.
| | - Travis Wassermann
- Loyola University Medical Center, Department of Emergency Medicine, Maywood, IL, United States of America.
| | - Ralph Lamonge
- Michigan Medicine, Department of Anesthesiology, Ann Arbor, MI, United States of America
| | - Nicolas Semenchuck
- Advocate Christ Medical Center, Department of Emergency Medicine, Oak Lawn, IL, United States of America
| | - Megan A Rech
- Loyola University Medical Center, Department of Pharmacy, Maywood, IL, United States of America; Loyola University Chicago, Stritch School of Medicine, Department of Emergency Medicine, Maywood, IL, United States of America
| |
Collapse
|
3
|
Foong KS, Munigala S, Kern-Allely S, Warren DK. Blood culture utilization practices among febrile and/or hypothermic inpatients. BMC Infect Dis 2022; 22:779. [PMID: 36217111 PMCID: PMC9552399 DOI: 10.1186/s12879-022-07748-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 09/23/2022] [Indexed: 12/04/2022] Open
Abstract
Background Predictors associated with the decision of blood culture ordering among hospitalized patients with abnormal body temperature are still underexplored, particularly non-clinical factors. In this study, we evaluated the factors affecting blood culture ordering in febrile and hypothermic inpatients. Methods We performed a retrospective study of 15,788 adult inpatients with fever (≥ 38.3℃) or hypothermia (< 36.0℃) from January 2016 to December 2017. We evaluated the proportion of febrile and hypothermic episodes with an associated blood culture performed within 24h. Generalized Estimating Equations were used to determine independent predictors associated with blood culture ordering among febrile and hypothermic inpatients. Results We identified 21,383 abnormal body temperature episodes among 15,788 inpatients (13,093 febrile and 8,290 hypothermic episodes). Blood cultures were performed in 36.7% (7,850/ 21,383) of these episodes. Predictors for blood culture ordering among inpatients with abnormal body temperature included fever ≥ 39℃ (adjusted odd ratio [aOR] 4.17, 95% confident interval [CI] 3.91–4.46), fever (aOR 3.48, 95% CI 3.27–3.69), presence of a central venous catheter (aOR 1.36, 95% CI 1.30–1.43), systemic inflammatory response (SIRS) plus hypotension (aOR 1.33, 95% CI 1.26–1.40), SIRS (aOR 1.26, 95% CI 1.20–1.31), admission to stem cell transplant / medical oncology services (aOR 1.09, 95% CI 1.04–1.14), and detection of abnormal body temperature during night shift (aOR 1.06, 95% CI 1.03–1.09) or on the weekend (aOR 1.05, 95% CI 1.01–1.08). Conclusion Blood culture ordering for hospitalized patients with fever or hypothermia is multifactorial; both clinical and non-clinical factors. These wide variations and gaps in practices suggest opportunities to improve utilization patterns. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-022-07748-x.
Collapse
Affiliation(s)
- Kap Sum Foong
- Division of Geographic Medicine and Infectious Diseases, Tufts Medical Center, Boston, MA, USA.,Division of Infectious Diseases, Washington University School of Medicine Hospital Epidemiologist, Barnes-Jewish Hospital, 4523 Clayton Ave., Campus Box 8051, 63110, Saint Louis, MO, USA
| | - Satish Munigala
- Division of Infectious Diseases, Washington University School of Medicine Hospital Epidemiologist, Barnes-Jewish Hospital, 4523 Clayton Ave., Campus Box 8051, 63110, Saint Louis, MO, USA
| | - Stephanie Kern-Allely
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - David K Warren
- Division of Infectious Diseases, Washington University School of Medicine Hospital Epidemiologist, Barnes-Jewish Hospital, 4523 Clayton Ave., Campus Box 8051, 63110, Saint Louis, MO, USA.
| |
Collapse
|
4
|
van de Voort EMF, Mintegi S, Gervaix A, Moll HA, Oostenbrink R. Antibiotic Use in Febrile Children Presenting to the Emergency Department: A Systematic Review. Front Pediatr 2018; 6:260. [PMID: 30349814 PMCID: PMC6186802 DOI: 10.3389/fped.2018.00260] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 08/31/2018] [Indexed: 01/30/2023] Open
Abstract
Introduction: While fever is the main complaint among pediatric emergency services and high antibiotic prescription are observed, only a few studies have been published addressing this subject. Therefore this systematic review aims to summarize antibiotic prescriptions in febrile children at the ED and assess its determinants. Methods: We extracted studies published from 2000 to 2017 on antibiotic use in febrile children at the ED from different databases. Author, year, and country of publishing, study design, inclusion criteria, primary outcome, age, and number of children included in the study was extracted. To compare the risk-of-bias all articles were assessed using the MINORS criteria. For the final quality assessment we additionally used the sample size and the primary outcome. Results: We included 26 studies reporting on antibiotic prescription and 28 intervention studies on the effect on antibiotic prescription. In all 54 studies antibiotic prescriptions in the ED varied from 15 to 90.5%, pending on study populations and diagnosis. Respiratory tract infections were mostly studied. Pediatric emergency physicians prescribed significantly less antibiotics then general emergency physicians. Most frequent reported interventions to reduce antibiotics are delayed antibiotic prescription in acute otitis media, viral testing and guidelines. Conclusion: Evidence on antibiotic prescriptions in children with fever presenting to the ED remains inconclusive. Delayed antibiotic prescription in acute otitis media and guidelines for fever and respiratory infections can effectively reduce antibiotic prescription in the ED. The large heterogeneity of type of studies and included populations limits strict conclusions, such a gap in knowledge on the determining factors that influence antibiotic prescription in febrile children presenting to the ED remains.
Collapse
Affiliation(s)
| | - Santiago Mintegi
- Pediatric Emergency Department, Cruces University Hospital, University of the Basque Country, Bilbao, Spain
| | - Alain Gervaix
- Division of Pediatric Emergency Medicine, Department of Child and Adolescent, Geneva University Hospitals and University of Geneva, Geneva, Switzerland
| | - Henriette A. Moll
- Department of General Pediatrics, Erasmus MC-Sophia Children's Hospital, Rotterdam, Netherlands
| | - Rianne Oostenbrink
- Department of General Pediatrics, Erasmus MC-Sophia Children's Hospital, Rotterdam, Netherlands
| |
Collapse
|
5
|
Klement MR, Siddiqi A, Rock JM, Chen AF, Bolognesi MP, Seyler TM. Positive Blood Cultures in Periprosthetic Joint Infection Decrease Rate of Treatment Success. J Arthroplasty 2018; 33:200-204.e1. [PMID: 28939030 DOI: 10.1016/j.arth.2017.08.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 08/18/2017] [Accepted: 08/27/2017] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Blood cultures are often obtained at the time of periprosthetic joint infection (PJI) diagnosis yet they are not considered part of the diagnostic criteria and the effects of a positive result on surgical outcome are unknown. The purposes of this study are to characterize the use of blood cultures when diagnosing PJI and to determine the association of positive blood cultures with PJI treatment success. METHODS A retrospective chart review on 320 patients surgically treated for primary hip and knee PJIs was performed from 2006-2013 at 2 academic medical centers with minimum 12-month follow-up. Treatment success was defined by the Delphi criteria. Multiple logistic regression analysis was performed to identify variables associated with treatment success. RESULTS Blood cultures were obtained from 53.1% of PJI patients (170/320) at the time of diagnosis. The same organism was identified 86.0% of the time in blood culture and operative culture. Patients with positive blood cultures at the time of PJI diagnosis had elevated synovial white blood cell count (98,979, P = .012), elevated serum C-reactive protein (24.2 mg/L, P < .001), and decreased treatment success (65.1%) compared with those with a negative blood culture (85.0%) and those without a blood culture (82.7%, P = .013). A positive blood culture remained associated with decreased PJI treatment success using multiple logistic regression analysis. CONCLUSION The presence of positive blood cultures at the time of PJI diagnosis decreased PJI treatment success. Further prospective studies are needed to help identify the role of blood cultures in the work up of PJI and treatment optimization in these patients.
Collapse
Affiliation(s)
- Mitchell R Klement
- Department of Orthopedics, Duke University Medical Center, Durham, North Carolina
| | - Ahmed Siddiqi
- Department of Orthopedic Surgery, Philadelphia College of Osteopathic Medicine, Philadelphia, Pennsylvania
| | - Justin M Rock
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania
| | - Antonia F Chen
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania
| | - Michael P Bolognesi
- Department of Orthopedic Surgery, Duke University Medical Center, Durham, North Carolina
| | - Thorsten M Seyler
- Department of Orthopedic Surgery, Duke University Medical Center, Durham, North Carolina
| |
Collapse
|
6
|
Abstract
OBJECTIVES To determine the proportion of true-positive blood culture results in children presenting to the ED with suspected appendicitis. To describe the current practice of obtaining blood cultures in children with suspected appendicitis. METHODS We performed a 2-year retrospective health record review of all children aged 2 through 17 years investigated for suspected appendicitis at a tertiary Pediatric Emergency Department. Subjects were identified by searching (a) institutional records for ICD-10-CA coding, (b) diagnostic imaging records of ultrasounds for appendicitis, and (c) surgical database records for nonincidental appendectomies. Abstracted demographic and clinical data were matched to regional laboratory services data to describe the performance and result of blood cultures. RESULTS Overall, 1315 children investigated for appendicitis were reviewed. Seven hundred fifty (57.0%) were girls, the average age was 11.7 years (SD, 4.0). Blood cultures were obtained in 288 (21.9%) of 1315 patients. Of the 11 (3.8%) cultures that were positive, only 1 (0.35%) was a true positive. Young age, high triage acuity, and presence of fever were associated with the acquisition of cultures (P < 0.001 for all). The proportion of children undergoing appendectomy and the negative appendectomy rate was similar between those with and without blood culture (P = 0.10 and P = 0.96, respectively). CONCLUSIONS True-positive blood cultures are very rare in children presenting to the ED with suspected appendicitis. Given the potential for false-positive cultures and the social/economic implications of initial testing/retesting of false positives, the use of routine blood cultures for children with suspected appendicitis is not supported.
Collapse
|
7
|
Impact of Mandatory Public Reporting of Central Line-Associated Bloodstream Infections on Blood Culture and Antibiotic Utilization in Pediatric and Neonatal Intensive Care Units. Infect Control Hosp Epidemiol 2015; 36:878-85. [PMID: 25913602 DOI: 10.1017/ice.2015.100] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND As mandatory public reporting of healthcare-associated infections increases, there is concern that clinicians could attempt to decrease rates by avoiding the diagnosis of reportable infections. OBJECTIVE To determine whether blood culture and antibiotic utilization changed after mandatory public reporting of central line-associated bloodstream infection (CLABSI). DESIGN Interrupted time-series of blood culture and antibiotic rates before and after state-specific implementation of mandatory public reporting. We analyzed data from pediatric and neonatal intensive care units (ICUs) at 17 children's hospitals that contributed to the Pediatric Health Information System administrative database. We used multivariable regression with generalized linear mixed-effects models to determine adjusted rate ratios (ARRs) after implementation of mandatory public reporting. We conducted subgroup analysis on patients with central venous catheters. To assess temporal trends, we separately analyzed data from 4 pediatric hospitals in states without mandatory public reporting. RESULTS There was no significant effect of mandatory public reporting on rates of blood culture (pediatric ICU ARR, 1.03 [95% CI, 0.82-1.28]; neonatal ICU ARR, 1.06 [0.85-1.33]) or antibiotic utilization (pediatric ICU ARR, 0.86 [0.72-1.04]; neonatal ICU ARR, 1.09 [0.87-1.35]). Results were similar in the subgroup of patients with central venous catheter codes. Hospitals with and without mandatory public reporting experienced small decreases in blood culture and antibiotic use across the study period. CONCLUSIONS Mandatory public reporting of central line-associated bloodstream infection did not impact blood culture and antibiotic utilization, suggesting that clinicians have not shifted their practice in an attempt to detect fewer infections.
Collapse
|
8
|
Bacteremia in previously healthy children in emergency departments: clinical and microbiological characteristics and outcome. Eur J Clin Microbiol Infect Dis 2014; 34:453-60. [PMID: 25252630 DOI: 10.1007/s10096-014-2247-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 09/10/2014] [Indexed: 10/24/2022]
Abstract
A blood culture (BC) is frequently requested in both patients with a suspected occult bacteremia/invasive infection as well as those with certain focal infections. Few data are available on the characteristics of patients in whom a bacteremia is identified in the Pediatric Emergency Department (PED). A prospective multicenter registry was established by the Spanish Pediatric Emergency Society. Epidemiological data, complementary test results, clinical management, and final outcome were recorded. Data from the first three years of the registry were analyzed. A true bacterial pathogen grew in 932 of 65,169 BCs collected [1.43 %; 95 % confidence interval (CI) 1.34-1.51 %], with 711 of them collected in patients without previously known bacteremia risk factors. Among them, 335 (47.1 %) were younger than 1 year old and 467 (65.7 %) had a normal Pediatric Assessment Triangle (PAT) on admission. Overall, the most frequently isolated bacterial species was Streptococcus pneumoniae (27.3 %; 47.6 % among patients with an altered PAT). The main pathogens were Escherichia coli (40.3 %) and S. agalactiae (35.7 %) among patients younger than 3 months, S. pneumoniae among patients 3-60 months old (40.0 %), and S. aureus (31.9 %) among patients over 60 months of age. Neisseria meningitidis was the leading cause of sepsis in patients older than 3 months. Eight patients died; none of them had a pneumococcal bacteremia and all had abnormal PAT findings on admission. S. pneumoniae is the main cause of bacteremia in patients without bacteremia risk factors who attended Spanish PEDs. Age and general appearance influence the frequency of each bacterial species. General appearance also influences the associated mortality.
Collapse
|
9
|
A “Top Five” list for emergency medicine: a policy and research agenda for stewardship to improve the value of emergency care. Am J Emerg Med 2013; 31:1520-4. [DOI: 10.1016/j.ajem.2013.07.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 06/05/2013] [Accepted: 07/17/2013] [Indexed: 01/08/2023] Open
|
10
|
Predicting bloodstream infection via systemic inflammatory response syndrome or biochemistry. J Emerg Med 2012; 44:550-7. [PMID: 22999775 DOI: 10.1016/j.jemermed.2012.07.059] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Revised: 04/02/2012] [Accepted: 07/03/2012] [Indexed: 11/22/2022]
Abstract
BACKGROUND The yield of blood cultures is approximately 10%. This could be caused by inaccurate prediction of patients with bloodstream infection (BSI). OBJECTIVES To evaluate the usability of systemic inflammatory response syndrome (SIRS) or biochemical analyses as predictors for positive blood culture. METHODS We conducted a prospective cohort study at a Danish regional hospital from February 1 to April 30, 2010. All adult patients were included on the first time blood cultures were sampled during admission. Data were obtained from medical records, databases on microbiology, biochemistry, and antibiotic treatment. Data included time of admission, date and result of blood culture, results of biochemical analyses, and clinical measurements on the day of blood culture. Prediction of BSI was analyzed according to both individual parameters and parameters combined in different sepsis score groups. Associations were calculated using multiple logistic regression. RESULTS Patients with BSI (68 patients) were compared to patients without BSI (828 patients). Respiratory rate, body temperature, and C-reactive protein were strongest associated with BSI, with adjusted odds ratio (OR) 5.42, 95% confidence interval (CI) 1.13-25.9; OR 2.55, 95% CI 1.34-4.87; and OR 6.06, 95% CI 0.82-44.6, respectively. SIRS was associated with BSI, with crude OR 7.25, 95% CI 1.75-30.1. Neutrophil count and p-carbamide were not associated with BSI: adjusted OR 0.88, 95% CI 0.36-2.13 and OR 1.44, 95% CI 0.82-2.52, respectively. Only one of the sepsis score groups was associated with BSI: crude OR 2.13, 95% CI 1.08-4.19. CONCLUSIONS SIRS is an adequate predictor of BSI. By contrast, biochemical parameters were not useful as predictors of BSI.
Collapse
|
11
|
Lin JN, Chen YH, Chang LL, Lai CH, Lin HL, Lin HH. Clinical characteristics and outcomes of patients with extended-spectrum β-lactamase-producing bacteremias in the emergency department. Intern Emerg Med 2011; 6:547-55. [PMID: 22033790 DOI: 10.1007/s11739-011-0707-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Accepted: 10/11/2011] [Indexed: 12/22/2022]
Abstract
Extended-spectrum β-lactamase (ESBL)-producing bacteria have been spreading from hospitals to communities. Despite this, there are limited emergency department (ED) patient-based studies about these bacteremias. A retrospective matched case-control study with a ratio of 1:3 was conducted at a university hospital. The case group consisted of patients aged >16 years with ESBL-producing bacteremias in the ED. Patients matched for age and sex with non-ESBL-producing bacteremias were sampled as the control group. Finally, 64 episodes of ESBL-producing Escherichia coli, Klebsiella pneumoniae, and Proteus mirabilis bacteremias were included in our study. The median age of case patients was 71 years, and 29 (45.3%) were males. The most common type of infection was urinary tract infection (71.9%), followed by intra-abdominal infection (12.5%). Inappropriate empirical antibiotics therapy was prescribed in 87.5% of case patients, which was significantly higher than the control group (13.0%; p < 0.001). Patients with inappropriate empirical antibiotics had a significantly longer hospital stay than those with appropriate empirical antibiotics (p < 0.001). Multivariate analysis showed that hospital-acquired infection, urinary catheterization, and previous antibiotics use were independent risk factors for the acquisition of ESBL-producing bacteremia. The 28-day mortality rate of case patients was 18.8%. Whether they received appropriate empirical antibiotics treatment or not, there was no statistical difference in the mortality of patients with ESBL-producing bacteremias (p = 0.167). To face these emerging multidrug-resistant bacteria and to guide the empirical antibiotics therapy, it is crucial for emergency physicians to recognize the characteristics and risk factors for ESBL-producing organisms.
Collapse
Affiliation(s)
- Jiun-Nong Lin
- Department of Emergency and Critical Care Medicine, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan
| | | | | | | | | | | |
Collapse
|
12
|
Kao CH, Kuo YC, Chen CC, Chang YT, Chen YS, Wann SR, Liu YC. Isolated pathogens and clinical outcomes of adult bacteremia in the emergency department: a retrospective study in a tertiary Referral Center. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2011; 44:215-21. [PMID: 21524617 DOI: 10.1016/j.jmii.2011.01.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2009] [Revised: 05/06/2010] [Accepted: 07/27/2010] [Indexed: 10/18/2022]
Abstract
BACKGROUND Approximately two-thirds of the patients with severe sepsis or septic shock are first encountered in the emergency departments (EDs) of western countries, in which bacteremia is present in about 50% of patients with severe sepsis. The situation of bacteremia presenting to the EDs in Taiwan is not well documented. The objective of this study was to examine the epidemiology and microbiology of bacteremia in adult patients who visited the ED of a medical center in southern Taiwan. METHODS A retrospective observational study of the epidemiology and microbiology of bacteremia was conducted in the ED of a medical center involving 6,137 adult patients and 13,903 blood cultures. RESULTS A total of 831 consecutive patients with 890 episodes of bacteremia were obtained from January 1 to December 31, 2004, indicating a positive culture rate of 13.5% (1,872/13,903). Among these episodes, 525 (59%) were defined as true community-acquired infections followed by 263 (29.5%) as health care-associated infections and 102 (11.5%) as nosocomial infections. Of the 972 isolates, 289 (29.7%) were gram-positive species and 683 (70.3%) were gram-negative species. Urinary tract infections (32.2%, 287/890) were most common in these patients, with Escherichia coli (30.8%, 299/972) being the most common pathogen. Bacteremia caused by Staphylococcus aureus was more common in nosocomial than true community-acquired infections (31.3% vs. 12%) and had significantly higher possibility of resistance to methicillin in infections not purely acquired from community (odds ratio = 24.92; 95% confidence interval, 9.88-62.87). The overall crude mortality rate was 21% and nearly half of the mortalities occurred within 3 days of visiting the ED. All patients discharged inadvertently were uneventful (n = 65, two lost at follow-up). CONCLUSIONS Categories of bacteremia acquisition was associated with different distribution of pathogens, antimicrobial resistance, and clinical outcome. Traditional classification might overestimate the problem of drug resistance in community-acquired infections. The concept of health care-associated infection should be introduced to avoid overemphasis of drug-resistant problem in true community-acquired infection.
Collapse
Affiliation(s)
- Chih-Hsiang Kao
- Department of Emergency Medicine, Kaohsiung Veteran General Hospital, Kaohsiung, Taiwan
| | | | | | | | | | | | | |
Collapse
|
13
|
van Nieuwkoop C, Bonten TN, van't Wout JW, Kuijper EJ, Groeneveld GH, Becker MJ, Koster T, Wattel-Louis GH, Delfos NM, Ablij HC, Leyten EMS, van Dissel JT. Procalcitonin reflects bacteremia and bacterial load in urosepsis syndrome: a prospective observational study. CRITICAL CARE (LONDON, ENGLAND) 2010. [PMID: 21083886 DOI: 10.1186/cc9328.epub] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
INTRODUCTION Guidelines recommend that two blood cultures be performed in patients with febrile urinary tract infection (UTI), to detect bacteremia and help diagnose urosepsis. The usefulness and cost-effectiveness of this practice have been criticized. This study aimed to evaluate clinical characteristics and the biomarker procalcitonin (PCT) as an aid in predicting bacteremia. METHODS A prospective observational multicenter cohort study included consecutive adults with febrile UTI in 35 primary care units and 8 emergency departments of 7 regional hospitals. Clinical and microbiological data were collected and PCT and time to positivity (TTP) of blood culture were measured. RESULTS Of 581 evaluable patients, 136 (23%) had bacteremia. The median age was 66 years (interquartile range 46 to 78 years) and 219 (38%) were male. We evaluated three different models: a clinical model including seven bed-side characteristics, the clinical model plus PCT, and a PCT only model. The diagnostic abilities of these models as reflected by area under the curve of the receiver operating characteristic were 0.71 (95% confidence interval (CI): 0.66 to 0.76), 0.79 (95% CI: 0.75 to 0.83) and 0.73 (95% CI: 0.68 to 0.77) respectively. Calculating corresponding sensitivity and specificity for the presence of bacteremia after each step of adding a significant predictor in the model yielded that the PCT > 0.25 μg/l only model had the best diagnostic performance (sensitivity 0.95; 95% CI: 0.89 to 0.98, specificity 0.50; 95% CI: 0.46 to 0.55). Using PCT as a single decision tool, this would result in 40% fewer blood cultures being taken, while still identifying 94 to 99% of patients with bacteremia.The TTP of E. coli positive blood cultures was linearly correlated with the PCT log value; the higher the PCT the shorter the TTP (R(2) = 0.278, P = 0.007). CONCLUSIONS PCT accurately predicts the presence of bacteremia and bacterial load in patients with febrile UTI. This may be a helpful biomarker to limit use of blood culture resources.
Collapse
Affiliation(s)
- Cees van Nieuwkoop
- Department of Infectious Diseases, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
van Nieuwkoop C, Bonten TN, van't Wout JW, Kuijper EJ, Groeneveld GH, Becker MJ, Koster T, Wattel-Louis GH, Delfos NM, Ablij HC, Leyten EMS, van Dissel JT. Procalcitonin reflects bacteremia and bacterial load in urosepsis syndrome: a prospective observational study. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2010; 14:R206. [PMID: 21083886 PMCID: PMC3220019 DOI: 10.1186/cc9328] [Citation(s) in RCA: 123] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2010] [Revised: 07/08/2010] [Accepted: 11/17/2010] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Guidelines recommend that two blood cultures be performed in patients with febrile urinary tract infection (UTI), to detect bacteremia and help diagnose urosepsis. The usefulness and cost-effectiveness of this practice have been criticized. This study aimed to evaluate clinical characteristics and the biomarker procalcitonin (PCT) as an aid in predicting bacteremia. METHODS A prospective observational multicenter cohort study included consecutive adults with febrile UTI in 35 primary care units and 8 emergency departments of 7 regional hospitals. Clinical and microbiological data were collected and PCT and time to positivity (TTP) of blood culture were measured. RESULTS Of 581 evaluable patients, 136 (23%) had bacteremia. The median age was 66 years (interquartile range 46 to 78 years) and 219 (38%) were male. We evaluated three different models: a clinical model including seven bed-side characteristics, the clinical model plus PCT, and a PCT only model. The diagnostic abilities of these models as reflected by area under the curve of the receiver operating characteristic were 0.71 (95% confidence interval (CI): 0.66 to 0.76), 0.79 (95% CI: 0.75 to 0.83) and 0.73 (95% CI: 0.68 to 0.77) respectively. Calculating corresponding sensitivity and specificity for the presence of bacteremia after each step of adding a significant predictor in the model yielded that the PCT > 0.25 μg/l only model had the best diagnostic performance (sensitivity 0.95; 95% CI: 0.89 to 0.98, specificity 0.50; 95% CI: 0.46 to 0.55). Using PCT as a single decision tool, this would result in 40% fewer blood cultures being taken, while still identifying 94 to 99% of patients with bacteremia.The TTP of E. coli positive blood cultures was linearly correlated with the PCT log value; the higher the PCT the shorter the TTP (R(2) = 0.278, P = 0.007). CONCLUSIONS PCT accurately predicts the presence of bacteremia and bacterial load in patients with febrile UTI. This may be a helpful biomarker to limit use of blood culture resources.
Collapse
Affiliation(s)
- Cees van Nieuwkoop
- Department of Infectious Diseases, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Lin JN, Lai CH, Chen YH, Chang LL, Lu PL, Tsai SS, Lin HL, Lin HH. Characteristics and outcomes of polymicrobial bloodstream infections in the emergency department: A matched case-control study. Acad Emerg Med 2010; 17:1072-9. [PMID: 21040108 DOI: 10.1111/j.1553-2712.2010.00871.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Polymicrobial bloodstream infection (BSI) is a critical condition and has been increasingly reported; however, the authors were unable to find an emergency department (ED) patient-based study in the literature. METHODS A retrospective matched case-control study with a ratio of 1:3 among patients with polymicrobial BSIs in an ED was conducted. The case group was patients aged > 16 years with polymicrobial BSIs. Patients matched for age and sex with monomicrobial BSIs were sampled as the control group. Demographic information, underlying conditions, microbiologic data, and outcomes were collected for further analysis. RESULTS From January 2005 to December 2007, a total of 112 episodes of polymicrobial BSIs among 109 patients were included. Two pathogens were isolated among 87 (77.7%) episodes and three were found among 25 (22.3%) episodes. A history of hospitalization within 90 days was an independent risk factor for polymicrobial BSIs (p = 0.003). Intraabdominal infection (p < 0.001) and respiratory tract infection (p = 0.017) were more likely to be associated with polymicrobial BSIs. Gram-negative and Gram-positive bacteria were documented in 95.5 and 46.4% episodes of polymicrobial BSIs, respectively. Inappropriate antimicrobial treatment was observed in 53.6% of polymicrobial BSIs, but only accounted for 23.8% of monomicrobial BSIs (p < 0.001). The overall 30-day mortality rate of the polymicrobial group was significantly higher than those with monomicrobial BSIs (30.3 and 11.6%, respectively; p < 0.001). CONCLUSIONS Patients with polymicrobial BSIs had a high mortality rate. Acknowledgment of the clinical and microbiologic characteristics and recognition of patients at risk for polymicrobial BSIs are critical in EDs.
Collapse
Affiliation(s)
- Jiun-Nong Lin
- Department of Emergency Medicine, E-Da Hospital/I-Shou University, Kaohsiung County, Taipei, Taiwan
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Hirshon JM, Warner M, Irvin CB, Niska RW, Andersen DA, Smith GS, McCaig LF. Research using emergency department-related data sets: current status and future directions. Acad Emerg Med 2009; 16:1103-9. [PMID: 20053229 DOI: 10.1111/j.1553-2712.2009.00554.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The 2009 Academic Emergency Medicine consensus conference focused on "Public Health in the ED: Surveillance, Screening and Intervention." One conference breakout session discussed the significant research value of health-related data sets. This article represents the proceedings from that session, primarily focusing on emergency department (ED)-related data sets and includes examples of the use of a data set based on ED visits for research purposes. It discusses types of ED-related data sets available, highlights barriers to research use of ED-related data sets, and notes limitations of these data sets. The paper highlights future directions and challenges to using these important sources of data for research, including identification of five main needs related to enhancing the use of ED-related data sets. These are 1) electronic linkage of initial and follow-up ED visits and linkage of information about ED visits to other outcomes, including costs of care, while maintaining de-identification of the data; 2) timely data access with minimal barriers; 3) complete data collection for clinically relevant and/or historical data elements, such as the external cause-of-injury code; 4) easy access to data that can be parsed into smaller jurisdictions (such as states) for policy and/or research purposes, while maintaining confidentiality; and 5) linkages between health survey data and health claims data. ED-related data sets contain much data collected directly from health care facilities, individual patient records, and multiple other sources that have significant potential impact for studying and improving the health of individuals and the population.
Collapse
Affiliation(s)
- Jon Mark Hirshon
- Department of Emergency Medicine, and Charles McC. Mathias Jr. National Study Center for Trauma and EMS, University of Maryland School of Medicine, Baltimore, MD, USA.
| | | | | | | | | | | | | |
Collapse
|
17
|
Lin JN, Tsai YS, Lai CH, Chen YH, Tsai SS, Lin HL, Huang CK, Lin HH. Risk factors for mortality of bacteremic patients in the emergency department. Acad Emerg Med 2009; 16:749-55. [PMID: 19594458 DOI: 10.1111/j.1553-2712.2009.00468.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Patients with bacteremia have a high mortality and generally require urgent treatment. The authors conducted a study to describe bacteremic patients in emergency departments (EDs) and to identify risk factors for mortality. METHODS Bacteremic patients in EDs were identified retrospectively at a university hospital from January 2007 to December 2007. Demographic characteristics, underlying illness, clinical conditions, microbiology, and the source of bacteremia were collected and analyzed for their association with 28-day mortality. RESULTS During the study period, 621 cases (50.2% male) were included, with a mean (+/-SD) age of 62.8 (+/-17.4) years. The most common underlying disease was diabetes mellitus (39.3%). Escherichia coli (39.2%) was the most frequently isolated pathogen. The most common source of bacteremia was urinary tract infection (41.2%), followed by primary bacteremia (13.2%). The overall 28-day mortality rate was 12.6%. Multivariate stepwise logistic regression analysis showed age > 60 years (odds ratio [OR] = 2.52, 95% confidence interval [CI] = 1.29 to 4.92, p = 0.007), malignancy (OR = 2.66, 95% CI = 1.44 to 4.91, p = 0.002), liver cirrhosis (OR = 2.08, 95% CI = 1.02 to 4.26, p = 0.044), alcohol use (OR = 5.73, 95% CI = 2.10 to 15.63, p = 0.001), polymicrobial bacteremia (OR = 3.99, 95% CI = 1.75 to 9.10, p = 0.001), anemia (OR = 2.33, 95% CI = 1.34 to 4.03, p = 0.003), and sepsis (OR = 1.94, 95% CI = 1.16 to 3.37, p = 0.019) were independent risk factors for 28-day mortality. CONCLUSIONS Bacteremic patients in the ED have a high mortality, particularly with these risk factors. It is important for physicians to recognize the factors that potentially contribute to mortality of bacteremic patients in the ED.
Collapse
Affiliation(s)
- Jiun-Nong Lin
- Division of Infectious Diseases, Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung County, Kaohsiung, Taiwan
| | | | | | | | | | | | | | | |
Collapse
|
18
|
Usefulness of initial blood cultures in patients admitted with pneumonia from an emergency department in Japan. J Infect Chemother 2009; 15:180-6. [PMID: 19554403 DOI: 10.1007/s10156-009-0682-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2008] [Accepted: 03/03/2009] [Indexed: 10/20/2022]
Abstract
Guidelines recommend obtaining blood cultures for all patients admitted with pneumonia. However, recent American studies have reported the low impact of these cultures on antibiotic therapy. Our aim was to investigate the incidence of bacteremia and change of therapy in admitted pneumonia patients from whom blood cultures were obtained in the emergency department (ED). A retrospective, observational, cohort study was conducted on consecutive patients (age >/=12 years) with pneumonia hospitalized through the ED between January 1 and December 31, 2006, in an urban teaching hospital in Japan. Data were collected on antibiotic sensitivities, empirical antibiotics, and changes of antibiotic management. Blood cultures were classified as positive, negative, or contaminant, based on previously established criteria. Out of 164 consecutive cases, blood cultures were positive in 6 patients (3.7%; 95% confidence interval [CI], 0.8%-6.6%), contaminated in 6 (3.7%), and negative in 152 (92.7%). Of the 6 bacteremic patients, 2 cases were likely to have been caused by concomitant diseases. Blood culture results altered therapy for 4 patients (2.4% of 164; 95% CI, 0.7%-6.1%), of whom 2 patients (1.2%; 95% CI, 0.1%-4.3%) had their coverage narrowed, 1 patient (0.6%; 95% CI, 0.0%-3.4%) had coverage broadened, and 1 patient had altered therapy before the drug sensitivities were reported. Considering cost and workload, the overall total annual cost was <euro>758 631 (<euro>107 = 1 $US in June 2008). Blood cultures could identify organisms in only a few patients with pneumonia and rarely altered antibiotic management even in patients with positive cultures. It may not be necessary to obtain blood cultures for patients admitted with pneumonia.
Collapse
|
19
|
Chesnutt BK, Zamora MR, Kleinpell RM. Blood cultures for febrile patients in the acute care setting: Too quick on the draw? ACTA ACUST UNITED AC 2008; 20:539-46. [DOI: 10.1111/j.1745-7599.2008.00356.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|