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"Freifeld, Alison"
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Causative Organisms and Associated Antimicrobial Resistance in Healthcare-Associated, Central Line–Associated Bloodstream Infections From Oncology Settings, 2009–2012
by
Freifeld, Alison G.
,
Magill, Shelley S.
,
See, Isaac
in
Adult
,
Antibiotic resistance
,
ARTICLES AND COMMENTARIES
2016
Background. Recent antimicrobial resistance data are lacking from inpatient oncology settings to guide infection prophylaxis and treatment recommendations. We describe central line–associated bloodstream infection (CLABSI) pathogens and antimicrobial resistance patterns reported from oncology locations to the Centers for Disease Control and Prevention's National Healthcare Safety Network (NHSN). Methods. CLABSI data reported to NHSN from 2009 to 2012 from adult inpatient oncology locations were compared to data from nononcology adult locations within the same hospitals. Pathogen profile, antimicrobial resistance rates, and CLABSI incidence rates per 1000 central line–days were calculated. CLABSI incidence rates were compared using Poisson regression. Results. During 2009–2012, 4654 CLABSIs were reported to NHSN from 299 adult oncology units. The most common organisms causing CLABSI in oncology locations were coagulate-negative staphylococci (16.9%), Escherichia coli (11.8%), and Enterococcus faecium (11.4%). Fluoroquinolone resistance was more common among E. coli CLABSI in oncology than nononcology locations (56.5% vs 41.5% of isolates tested; P < .0001) and increased significantly from 2009–2010 to 2011–2012 (49.5% vs 60.4%; P = .01). Furthermore, rates of CLABSI were significantly higher in oncology compared to nononcology locations for fluoroquinolone-resistant E. coli (rate ratio, 7.37; 95% confidence interval [CI], 6.20–8.76) and vancomycin-resistant E. faecium (rate ratio, 2.27, 95% CI, 2.03–2.53). However, resistance rates for some organisms, such as Klebsiella species and Pseudomonas aeruginosa, were lower in oncology than in nononcology locations. Conclusions. Antimicrobial-resistant E. coli and E. faecium have become significant pathogens in oncology. Practices for antimicrobial prophylaxis and empiric antimicrobial therapy should be regularly assessed in conjunction with contemporary antimicrobial resistance data.
Journal Article
De-escalation of empiric broad spectrum antibiotics in hematopoietic stem cell transplant recipients with febrile neutropenia
by
Freifeld Alison
,
Rearigh Lindsey
,
Stohs Erica
in
Antibiotics
,
Neutropenia
,
Stem cell transplantation
2020
Febrile neutropenia (FN) is a common serious complication in patients undergoing hematopoietic stem cell transplantation (HSCT) requiring urgent evaluation and initiation of empiric broad spectrum antibiotics (BSA). The appropriate duration of BSA for FN in patients with negative cultures and no identifiable infection remains undefined. We retrospectively analyzed allogenic and autologous HSCT patients with FN and negative infectious work-up at our facility from 2012 to 2018. The early de-escalation group (EDG) included those who had BSA de-escalation to fluoroquinolone prophylaxis at least 24 h prior to absolute neutrophil count (ANC) recovery after the patient was fever-free for at least 48 h. Among 297 patients undergoing their first HSCT who experienced FN with negative infectious work-up, 83 patients were de-escalated early with the remaining 214 in the standard of care group (SCG) whose BSA were continued until ANC was > 500. Duration of broad-spectrum antibiotics was shorter in EDG compared to SCG (3.86 days vs. 4.62 days, p = 0.03). Rates of mortality, new infections, and clinical decompensation requiring intensive care unit transfer and/or pressor use within 30 days were all similar between the two groups (0% vs. 0.4% p = 1.00, 0% vs. 1.4% p = 0.56, 13.2% vs. 8.4% p = 0.27). This indicates that it is safe to de-escalate antibiotics prior to ANC recovery, leading to less BSA exposure.
Journal Article
Clinical Practice Guideline for the Use of Antimicrobial Agents in Neutropenic Patients with Cancer: 2010 Update by the Infectious Diseases Society of America
by
Bow, Eric J.
,
Ito, James I.
,
Rolston, Kenneth V.
in
Algorithms
,
Anti-Infective Agents - administration & dosage
,
Antibiotics
2011
This document updates and expands the initial Infectious Diseases Society of America (IDSA) Fever and Neutropenia Guideline that was published in 1997 and first updated in 2002. It is intended as a guide for the use of antimicrobial agents in managing patients with cancer who experience chemotherapy-induced fever and neutropenia.
Recent advances in antimicrobial drug development and technology, clinical trial results, and extensive clinical experience have informed the approaches and recommendations herein. Because the previous iteration of this guideline in 2002, we have a developed a clearer definition of which populations of patients with cancer may benefit most from antibiotic, antifungal, and antiviral prophylaxis. Furthermore, categorizing neutropenic patients as being at high risk or low risk for infection according to presenting signs and symptoms, underlying cancer, type of therapy, and medical comorbidities has become essential to the treatment algorithm. Risk stratification is a recommended starting point for managing patients with fever and neutropenia. In addition, earlier detection of invasive fungal infections has led to debate regarding optimal use of empirical or preemptive antifungal therapy, although algorithms are still evolving.
What has not changed is the indication for immediate empirical antibiotic therapy. It remains true that all patients who present with fever and neutropenia should be treated swiftly and broadly with antibiotics to treat both gram-positive and gram-negative pathogens.
Finally, we note that all Panel members are from institutions in the United States or Canada; thus, these guidelines were developed in the context of North American practices. Some recommendations may not be as applicable outside of North America, in areas where differences in available antibiotics, in the predominant pathogens, and/or in health care–associated economic conditions exist. Regardless of venue, clinical vigilance and immediate treatment are the universal keys to managing neutropenic patients with fever and/or infection.
Journal Article
Clinical Practice Guidelines for the Management of Patients with Histoplasmosis: 2007 Update by the Infectious Diseases Society of America
by
McKinsey, David S.
,
Kauffman, Carol A.
,
Baddley, John W.
in
Acute Disease
,
Antifungal agents
,
Antifungal Agents - administration & dosage
2007
Evidence-based guidelines for the management of patients with histoplasmosis were prepared by an Expert Panel of the Infectious Diseases Society of America. These updated guidelines replace the previous treatment guidelines published in 2000 (Clin Infect Dis 2000; 30:688–95). The guidelines are intended for use by health care providers who care for patients who either have these infections or may be at risk for them. Since 2000, several new antifungal agents have become available, and clinical trials and case series have increased our understanding of the management of histoplasmosis. Advances in immunosuppressive treatment for inflammatory disorders have created new questions about the approach to prevention and treatment of histoplasmosis. New information, based on publications from the period 1999–2006, are incorporated into this guideline document. In addition, the panel added recommendations for management of histoplasmosis in children for those aspects that differ from aspects in adults.
Journal Article
Executive Summary: Clinical Practice Guideline for the Use of Antimicrobial Agents in Neutropenic Patients with Cancer: 2010 Update by the Infectious Diseases Society of America
2011
This document updates and expands the initial Infectious Diseases Society of America (IDSA) Fever and Neutropenia Guideline that was published in 1997 and first updated in 2002. It is intended as a guide for the use of antimicrobial agents in managing patients with cancer who experience chemotherapy-induced fever and neutropenia. Recent advances in antimicrobial drug development and technology, clinical trial results, and extensive clinical experience have informed the approaches and recommendations herein. Because the previous iteration of this guideline in 2002, we have a developed a clearer definition of which populations of patients with cancer may benefit most from antibiotic, antifungal, and antiviral prophylaxis. Furthermore, categorizing neutropenic patients as being at high risk or low risk for infection according to presenting signs and symptoms, underlying cancer, type of therapy, and medical comorbidities has become essential to the treatment algorithm. Risk stratification is a recommended starting point for managing patients with fever and neutropenia. In addition, earlier detection of invasive fungal infections has led to debate regarding optimal use of empirical or preemptive antifungal therapy, although algorithms are still evolving. What has not changed is the indication for immediate empirical antibiotic therapy. It remains true that all patients who present with fever and neutropenia should be treated swiftly and broadly with antibiotics to treat both gram-positive and gram-negative pathogens. Finally, we note that all Panel members are from institutions in the United States or Canada; thus, these guidelines were developed in the context of North American practices. Some recommendations may not be as applicable outside of North America, in areas where differences in available antibiotics, in the predominant pathogens, and/or in health care—associated economic conditions exist. Regardless of venue, clinical vigilance and immediate treatment are the universal keys to managing neutropenic patients with fever and/or infection.
Journal Article
The climate crisis and healthcare: What do infection prevention and stewardship professionals need to know?
by
Freifeld, Alison G.
,
Todd, Alexandra I.
,
Khan, Ali S.
in
Air pollution
,
Carbon footprint
,
Cardiovascular diseases
2023
The climate crisis calls for urgent action from every level of the US healthcare sector, starting with an acknowledgment of our own outsized contribution to greenhouse gas emissions (at least 8.5% of carbon emissions). As the climate continues to become warmer and wetter, the medical establishment must deal with increasing rates of pulmonary and cardiovascular diseases, heat-related illness, and emerging infectious diseases among many other health harms. Additionally, extreme weather events are causing healthcare delivery breakdown due to physical infrastructure damage, slowed supply chains, and workforce burden. Pathways for healthcare systems to meet these challenges are emerging. They entail significant measures to mitigate our carbon footprint, embrace shared and equity-driven governance, develop new metrics of accountability, and build more resilience into our care delivery processes. We call upon SHEA to play a unique leadership role in the fight for sustainable, equitable, and efficient health care in a rapidly changing climate that immediately threatens human well-being.
Journal Article
Valganciclovir for Cytomegalovirus Prevention in Solid Organ Transplant Patients: An Evidence-Based Reassessment of Safety and Efficacy
by
Lyden, Elizabeth R.
,
Stoner, Julie A.
,
Freifeld, Alison G.
in
Acyclovir
,
Analysis
,
Antiviral agents
2009
Several anti-viral drugs have demonstrated efficacy in preventing Cytomegalovirus (CMV) infections in solid organ transplant (SOT) patients. The recently approved valganciclovir is the most commonly used and most expensive drug for CMV prevention. The safety and efficacy data have been drawn from a single trial. We hypothesized that valganciclovir may not be as safe as nor more effective than other therapies for CMV prevention.
All experimental and analytical studies that compared valganciclovir with other therapies for prevention of CMV infection after SOT were selected. Based on meta-analytic and multivariate regression methodologies we critically analyzed all available evidence.
Nine studies were included (N = 1,831). In trials comparing valganciclovir with ganciclovir, the risk for CMV disease is 0.98 (95% Confidence Interval (95%CI) 0.67 to 1.43; P = 0.92; I(2) = 0%). Valganciclovir was significantly associated with the risk of absolute neutropenia (<1,500/mm(3)) compared with all therapies (Odds Ratio (OR) 3.63 95%CI 1.75 to 7.53; P = 0.001; I(2) = 0%); with ganciclovir only (OR 2.88, 95%CI 1.27 to 6.53; P = 0.01; I(2) = 0%); or with non-ganciclovir therapies (OR 8.30, 95%CI 1.51 to 45.58; P = 0.01; I(2) = 10%). For a neutropenia cut-off of <1,000/mm(3), the risk remained elevated (OR 1.97, 95%CI 1.03 to 3.67; P = 0.04; I(2) = 0%). For every 24 patients who receive valganciclovir prophylaxis, one more will develop neutropenia compared to other therapies. The risk of late-onset CMV disease with valganciclovir was similar to ganciclovir and higher than those with non-ganciclovir therapies (OR 8.95, 95%CI 1.07 to 74.83; P = 0.04; I(2) = 0%]. One more patient will develop late-onset CMV disease for every 25 who receive valganciclovir compared to treatment with non-ganciclovir therapies. The risk of CMV tissue-invasive disease in liver recipients receiving valganciclovir was 4.5 times the risk seen with ganciclovir [95%CI 1.00 to 20.14] (p = 0.04). All results remained consistent across different study designs, valganciclovir doses, and CMV serostatus.
Valganciclovir shows no superior efficacy and significantly higher risk of absolute neutropenia, CMV late-onset disease, and CMV tissue-invasive disease compared to other standard therapies. Due to the availability of efficacious, safer, and lower cost drugs (high-dose acyclovir, valacyclovir, ganciclovir), our results do not favor the use of valganciclovir as a first-line agent for CMV preemptive or universal prophylaxis in SOT patients.
Journal Article
Meta-Analysis: The Efficacy of Strategies To Prevent Organ Disease by Cytomegalovirus in Solid Organ Transplant Recipients
by
Lyden, Elizabeth
,
Stoner, Julie
,
Freifeld, Alison G.
in
Antiviral Agents - therapeutic use
,
Bacteria
,
Biological and medical sciences
2005
Cytomegalovirus (CMV), the most common opportunistic viral infection in solid organ transplant recipients, is associated with substantial morbidity and mortality.
To assess the efficacy of universal prophylaxis and preemptive approaches in preventing CMV organ disease and other complications in solid organ transplant recipients.
Using no language restrictions, the authors searched the following databases from their inception through May 2005: MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, and Evidence-Based Medicine. The authors also reviewed abstracts from scientific meetings and contacted experts and pharmaceutical companies.
Randomized, controlled trials that evaluated antiviral strategies for preventing CMV and associated complications in solid organ transplant recipients were selected.
Two reviewers independently extracted and assessed the data.
The authors found 17 trials involving 1980 patients. Compared with placebo or no therapy, both universal prophylaxis (odds ratio [OR], 0.20 [95% CI, 0.13 to 0.31]) and preemptive strategies (OR, 0.28 [CI, 0.11 to 0.69]) reduced CMV organ disease. However, only universal prophylaxis seemingly reduced CMV organ disease in subgroups of patients at highest risk (donors with positive CMV serostatus and recipients with negative CMV serostatus and induction with antibodies). Both strategies reduced the rate of allograft rejection. Only universal prophylaxis statistically significantly reduced bacterial and fungal infections (OR, 0.49 [CI, 0.36 to 0.67]) and death (OR, 0.62 [CI, 0.40 to 0.96]). Both acyclovir and ganciclovir statistically significantly prevented CMV organ disease in the universal prophylaxis trials.
Studies were of modest size, and few studies assessed all outcomes. Studies did not always provide data that discriminated between CMV organ disease and CMV syndrome or data about the timing of CMV organ disease.
Universal prophylaxis and preemptive strategies are beneficial in preventing CMV organ disease in solid organ transplant recipients. Both strategies are associated with a reduction in allograft rejection, but current data suggest that only universal prophylaxis reduces bacterial and fungal infections and death. Acyclovir and ganciclovir are both effective for universal prophylaxis.
Journal Article
Histoplasmosis Complicating Tumor Necrosis Factor–α Blocker Therapy: A Retrospective Analysis of 98 Cases
by
Money, Mary E.
,
Miller, Rachel A.
,
Prakash, Vidhya
in
Adalimumab - adverse effects
,
Adalimumab - therapeutic use
,
Adolescent
2015
Background. Histoplasmosis may complicate tumor necrosis factor (TNF)–α blocker therapy. Published case series provide limited guidance on disease management. We sought to determine the need for long-term antifungal therapy and the safety of resuming TNF-α blocker therapy after successful treatment of histoplasmosis. Methods. We conducted a multicenter retrospective review of 98 patients diagnosed with histoplasmosis between January 2000 and June 2011. Multivariate logistic regression was used to evaluate risk factors for severe disease. Results. The most commonly used biologic agent was infliximab (67.3%). Concomitant corticosteroid use (odds ratio [OR], 3.94 [95% confidence interval {CI}, 1.06–14.60]) and higher urine Histoplasma antigen levels (OR, 1.14 [95% CI, 1.03–1.25]) were found to be independent predictors of severe disease. Forty-six (47.4%) patients were initially treated with an amphotericin B formulation for a median duration of 2 weeks. Azole treatment was given for a median of 12 months. TNF-α blocker therapy was initially discontinued in 95 of 98 (96.9%) patients and later resumed in 25 of 74 (33.8%) patients at a median of 12 months (range, 1–69 months). The recurrence rate was 3.2% at a median follow-up period of 32 months. Of the 3 patients with recurrence, 2 had restarted TNF-α blocker therapy, 1 of whom died. Mortality rate was 3.2%. Conclusions. In this study, disease outcomes were generally favorable. Discontinuation of antifungal treatment after clinical response and an appropriate duration of therapy, probably at least 12 months, appears safe if pharmacologic immunosuppression has been held. Resumption of TNF-α blocker therapy also appears safe, assuming that the initial antifungal therapy was administered for 12 months.
Journal Article
The neutropenic diet reviewed: moving toward a safe food handling approach
by
Freifeld, Alison G
,
Fox, Nicole
in
Antineoplastic Agents - adverse effects
,
Bacteremia - microbiology
,
Bacteremia - prevention & control
2012
For decades, the concept of a neutropenic diet has implied a strict limitation of foods allowed for consumption, as a presumptive means of reducing the risk of infection in cancer patients. The rationale was to limit the introduction of potentially harmful bacteria into the gastrointestinal tract by the restriction of certain foods that might harbor those organisms. However, this concept has not been substantiated with direct proof, and no universal definition of the neutropenic diet exists. Exactly which foods are restricted varies greatly by institution, but most notable is the restriction of fresh fruits and vegetables. Research evaluating potential benefits of a neutropenic diet is very limited, but the diet is still prescribed in many institutions with the hope that it will prevent foodborne infection and/or bacteremia in neutropenic patients. Review of the pathophysiology of foodborne illness and pertinent studies about the neutropenic diet lead to the conclusion that there is no clear benefit from the longstanding dietary restrictions that may be imposed during neutropenia. Instead, we propose adoption of standard safe food handling methods to allow for a more liberalized diet in the neutropenic patient.
Journal Article