Hospital Antibiogram Research Articles

A work in progress: antimicrobial stewardship in solid organ transplant patient populations.

To review recent medical literature addressing antimicrobial stewardship in solid organ transplant (SOT) recipients. Few studies with a strict focus on SOT patients have been published to date. Team-based antimicrobial stewardship interventions in SOT populations do have beneficial impacts on antimicrobial stewardship-relevant outcomes. Several studies have compared SOT-specific antibiograms to widely accepted hospital antibiograms; these studies all have found important differences in resistance rates among bacterial pathogens. Novel biomarkers like virome monitoring for assessing the net state of immunosuppression hold promise for individualized antimicrobial stewardship interventions. SOT patients are an understudied population with respect to antimicrobial stewardship interventions. Current antimicrobial stewardship interventions for SOT patients are largely extrapolated from studies in general patient populations and may not accurately reflect SOT-specific infection risks or outcomes. Antimicrobial stewardship interventions do impact SOT-relevant care goals but require significantly more research to achieve the depth and reach of antimicrobial stewardship interventions developed for general populations.

Debate on impact of restriction on antimicrobial use on antimicrobial resistance rate: explanation and deliberation

Antimicrobial resistance (AMR) is a rising public health crisis worldwide. Antimicrobial stewardship, which core is restriction on antimicrobial use to decline selective pressure of AMR, becomes main strategy for tackling AMR. But there are lots of debates about beneficial impact of restriction to antimicrobial use on AMR in recent years. One of the important reasons of the debate is defects on research methodology, especially there are no differentiation between hospital antibiogram and surveillance antibiogram, because the former is used as a reference of empirical antibiotic therapy, and only the latter is appropriate for evaluating factors affecting resistance, including antibiotic use. Once bacteria develop drug resistance, there are both the fitness costs resulting its loss of competitiveness in evolution and restoration of sensitivity to antibiotics, and mechanism of compensatory evolution which allows AMR to persist in bacteria. It is suggested that only by deeply studying the molecular genetics and evolutionary mechanism of drug-resistant bacteria can we find the fundamental way to overcome AMR. At present, we need to adhere to and improve the antimicrobial stewardship, develop new anti-bacterial agents and therapies, connect the Healthy China strategy with the great health concept advocated by WHO and other international organizations, learn from international experience to curb AMR, and promote coordinated and sustainable economic and social development.

An Overview Evaluation of Bacterial Infection and Bacterial Contamination at the Hospital Environment and Antibiogram for the Isolated Pathogens at Al Kufra Teaching Hospital, Libya

Background/Aims: Infectious diseases are the major public health problem worldwide. The medical services into the Southern Libyan sub-Saharan hospitals do not receive much attention in knowing the infection rates of pathogenic bacteria coming to the hospital, as well as there is not much information available about the hospital infection control application system. This study was performed to evaluate the infectious disease received to Al Kufra teaching hospital and determination the hospital risk factors involved in hospital-acquired infection. Materials and Methods: The screening was performed to investigate the distribution of potential pathogens among 157 samples collected from the four hospital wards including intensive care unit, the pediatric ward, male and female surgical ward from the hospitalizes patients, medical staff and hospital workers, and across different hospital facilities. Results: The bedsores swabs and urine samples showed 100% of infection, followed by sputum, stool, surgical wounds, and cerebrospinal fluid (85.8%, 67%, 62.5%, and 42.9%), respectively. Most of the hospital facilities showed 100% of contamination. The results showed Staphylococcus aureus colonized 40 (77%) of the total nasal swabs, other samples detected Bacillus cereus, Streptococcus pneumoniae, Pseudomonas aeruginosa, Enterococcus faecalis, Escherichia coli 0157. The sensitivity of Gram-positive organisms to the antibiotics showed resistance to Penicillin G (90.1%) and Amoxicillin + Clavulanic acid (82.7%), Methicillin (65.5%) and Vancomycin (65.5%). For Gram-negative organisms, the isolates showed resistance to tetracycline and colistin (62.5%) for each. Conclusion: The bacterial outbreak in the clinical and environmental samples of Al Kufra Teaching Hospital was relatively high. To control bacterial infection and hospital contamination, several instructions need to be carried out to protect the hospital staff and patients from being infected.

Frequency of microbial isolates and pattern of antimicrobial resistance in patients with hematological malignancies: a cross-sectional study from Palestine

BackgroundInfections are the main cause of death in patients with hematologic malignancies. This study aims to determine the microbial profile of infections in patients with hematologic malignancies and to determine the antimicrobial resistance patterns for these pathogens.MethodsA retrospective descriptive cross-sectional study was conducted from January 2018 to December 2019 at a large hematological center in Palestine. The medical data of hematologic malignancy patients with positive cultures were collected from the hematology/oncology department using the hospital information system, and data regarding the microbial isolates and their antimicrobial resistance were collected from the microbiology laboratory.ResultsA total of 144 isolates were identified from different types of specimens, mostly blood samples. Of all isolates, 66 (45.8%) were gram-negative bacteria (GNB), 57 (39.6%) were gram-positive bacteria (GPB), and 21 (14.6%) were fungal isolates. The GNB that were most frequently isolated were Pseudomonas aeruginosa (27, 40.9%), followed by Escherichia coli (E. coli) (20, 30.3%). Fourteen isolates (24.6%) of GPB were Staphylococcus epidermidis followed by Enterococcus faecium (10, 17.5%) and Staphylococcus hemolyticus (10, 17.5%). The most frequent fungal pathogens were Candida species (20, 95.2%). GNB were found to be resistant to most antibiotics, mainly ampicillin (79.3%). Pseudomonas aeruginosa exhibited high resistance to ciprofloxacin (60%) and imipenem (59.3%). Among GPB, high resistance rates to oxacillin (91.1%) and amikacin (88.8%) were found. All isolated strains of Staphylococcus epidermidis were resistant to cephalosporins and oxacillin. Approximately half of the GNB isolates (34, 51.5%) were multi-drug resistant organisms (MDRO), and 16.7% (11 isolates) were difficult-to-treat resistance (DTR). Furthermore, 68.4% (39 isolates) of GPB were MDRO. The proportion of staphylococci (CoNS and S. aureus) resistant to oxacillin was 91.7%, while 88.6% of enterococci were resistant to vancomycin.ConclusionsThe findings of this study confirm the predominant microorganisms seen in patients with hematologic malignancies, and show a high percentage of antibiotic resistance. Policies regarding antibiotic use and proper infection control measures are needed to avert the ever-growing danger of antimicrobial resistance. This may be achieved by developing antibiotic stewardship programs and local guidelines based on the hospital's antibiogram.

Audits of Antimicrobial Usage in a Tertiary Care Center in Hyderabad.

BackgroundIrrational prescriptions have an ill effect on health as well as on healthcare expenditure. Prescription auditing is an important tool to improve the quality of prescriptions, which in turn improves the quality of health care provided. Regular and timely audits of antibiotic prescriptions can prevent irrational antibiotic usage.IntroductionThe inappropriate use of drugs is a global health problem, especially in developing countries like India. In 2015, during the 68th World Health Organization (WHO) Regional Committee for Southeast Asia, all Member States of the region, including India, endorsed the “Regional Strategy for Patient Safety in the WHO Southeast Asia Region (2016-2025)” aiming to support the development of national quality of care and patient safety strategies, policies, and plans and commit to translating those objectives of the Regional Strategy into actionable strategies at country level.MethodologyA retrospective observational study was conducted in a 330-bedded, National Accreditation Board for Hospitals & Healthcare Providers (NABH)-accredited tertiary healthcare center. The study period was six months, from January 2019 to June 2019.ResultsNinety-five point four-five percent (95.45%) of the doctors attended the sensitization program and all accepted following the standard prescribing protocols. Sixty-nine point seven percent (69.7%) of the doctors were aware of the availability of drugs in the hospital pharmacy stores. Seventy-four point two-four percent (74.24%) of the doctors were aware of the ongoing prescription audits. Seventy-two point two-seven percent (72.27%) of the treating doctors were of the opinion of selecting the appropriate antibiotics based on hospital antibiogram. The importance of antibiograms from cultures and environmental surveillance was followed well only after sensitizing all the treating doctors. Ninety-five point four-five percent (95.45%) of the doctors were of the opinion of taking the permission of a higher authority to start high-end antibiotics. Seventy-seven point one-zero percent (77.10%) doctors recommended sample collection prior to antibiotic administration. Sixty-three percent (63%) of the patient’s clinical condition improved with the antibiotics prescribed prior to the culture report.ConclusionBy judicious use of antibiotics, we can reduce the evolution of antibiotic resistance in bacteria and extend the useful life of antibiotics that are still effective. Antibiotic use patterns must be studied to address complications resulting from a large number of antibiotics.

Enhancing the empiric antibiotic selection by introducing an antibiogram toolkit in a tertiary care hospital in Southern India - A prospective study.

Antibiograms gives an overview of the cumulative susceptibility of formal antibiotics to bacterial isolates, which reflects the portion of each bacterium susceptible to a given antibiotic formulation by using antimicrobial susceptibility testing. The objective of this study is to gather and analyse data from drug utilization evaluation (DUE) studies and antimicrobial susceptibility tests in order to create an antibiogram toolkit that will help clinicians to select appropriate antimicrobial agents for initial empirical antibiotic therapy at point of care settings and avoid irrational use of antibiotics. A prospective interventional study was conducted at tertiary care hospital, biological samples of infectious patients were collected from various wards as per Clinical & Laboratory Standards Institute CLSI M39-A4guidelines. Antimicrobial susceptibility results were analysed using WHONET software. Antibiotic stewardship committee was formed and involved in monitoring the usage of antibiotics, measuring outcomes, collecting feedback and finding the scope for improving the application of antibiogram toolkit in the hospital. Antibiotic usage tracking method was followed to know the level of adherence to the prescribing guidelines by the health care professionals. A total of 157samples were obtained from various wards of the hospital. In that, Escherichia coli, Staphylococcus aureus and Klebsiella Pneumoniae were isolated in significant numbers. Antibacterial susceptibility results were collected, an initial antibiogram was developed for 18 antibacterial agents with respect to 3gram-positive (+) and 1gram-negative (-) organisms. 90% of prescribers mentioned that the antibiogram was useful, and 76% of them adhered to the guidelines. 26% were not adhered due to the patient-related factors. In our study, we have used qualitative and quantitative evaluation of drug utilization (DUE) reports to understand the existing prescribing pattern of antibiotics and setting target organisms and antibacterials to develop the hospital antibiogram. Combining DUE studies and antibiogram development was helpful in implementing effective antibiotic policies for the hospital. Further, this study pattern will be continued on a yearly basis and focused on developing cumulative antibiograms to understand the changes in resistance pattern of antimicrobials and utilization of antibiotics in the hospital.

105. Fluoroquinolone Stewardship at a Community Health-System: A Decade in Review

BackgroundFluoroquinolone stewardship is a common target for antimicrobial stewardship programs seeking to maintain or improve fluoroquinolone susceptibility rates. Additional benefits include reducing C. difficile infection rates, drug toxicities, and resistance to other antimicrobials as fluoroquinolones can co-select for resistance. The Norton Healthcare antimicrobial stewardship program was founded in 2011 and provides services at 4 adult hospitals with ~1600 beds. Main fluoroquinolone stewardship activities have included provider education, prospective audit and feedback, and guideline and order-set development. The purpose of this study was to describe the resistance and usage rates of fluoroquinolones over time. MethodsThis was a descriptive study examining individual adult hospital antibiograms from 2010 to 2020. Levofloxacin susceptibility rates to E. coli and P. aeruginosa were collated from annual antibiograms between 2010 and 2020 for outpatients and each adult hospital. Adult hospital resistance rates were aggregated and weighted accordingly to number of isolates per hospital per year. Additionally, levofloxacin and ciprofloxacin inpatient days of therapy (DOT) was collected since 2016 when DOT was first readily retrievable and was normalized per 1000 patient days to compare between different time points.ResultsOutpatient levofloxacin likelihood of activity against P. aeruginosa improved from 81% to 91%. Outpatient levofloxacin likelihood of activity against E. coli remained stable between 84 – 86% (Figure 1). Adult inpatient fluoroquinolone usage decreased by approximately 75% from 83.5 to 21.37 DOT/1000 patient days since 2016 (Figure 2). Adult inpatient levofloxacin likelihood of activity against P. aeruginosa improved from 53% to 83%. Adult inpatient levofloxacin likelihood of activity against E. coli improved from 65% to 75% (Figure 3). ConclusionThe Norton Healthcare antimicrobial stewardship program has been effective in reducing unnecessary fluoroquinolone usage and improving inpatient fluoroquinolone susceptibility rates. Future studies should examine opportunities to translate successes to the outpatient phase of care. Disclosures Ashley Wilde, PharmD, BCPS-AQ ID, Nothing to disclose Paul S. Schulz, MD, Gilead (Consultant, Speaker’s Bureau)Merck (Consultant, Speaker’s Bureau)

AN AUDIT ON MICROBIOLOGY CULTURE REPORTS: ANTIBIOGRAM FORMULATION FOR SOUTH INDIAN SECONDARY HOSPITAL

An antibiogram is a periodic summary of antimicrobial susceptibilities of local bacterial isolates submitted to the hospital's microbiology lab. An audit was undertaken in a secondary hospital from South India to create a hospital antibiogram from culture reports for the period December 2019-July 2020. A total of 167 positive cultures were isolated. The commonest isolate was Escherichia coli (n=66), followed by Staphylococcus aureus (n=31). From the formulated antibiogram, Amikacin is a good rst-line antibiotic for the treatment of urinary tract infection. Also, 52% of S. aureus organisms are resistant to methicillin (MRSA- Methicillin resistant Staphylococcus aureus). The antibiotic resistance noted on the antibiogram is a grim reminder to judiciously use our antibiotics.

Antibiogram Development in the Setting of a High Frequency of Multi-Drug Resistant Organisms at University Teaching Hospital, Lusaka, Zambia.

Antimicrobial resistance is a global challenge requiring reliable surveillance data collection and use. Prior studies on resistance in Zambia depended on laboratory methods with limited standardization. Since 2015, the University Teaching Hospital (UTH) microbiology laboratory has used the Vitek 2 Compact (bioMerieux, Inc., Marcy-l’Étoile, France) for standardized identification and susceptibility testing. We conducted a cross-sectional study of 2019 bacterial isolates collected from July 2015 to April 2017 to identify bacterial causes of infections, their susceptibility to commonly used antibiotics at UTH, and develop hospital antibiograms with a multidisciplinary team using World Health Organization guidance. We found high levels of antibiotic resistance among Gram negative bacteria. Escherichia coli and Klebsiella pneumoniae were highly resistant to all antibiotics except amikacin and carbapenems. E. coli had susceptibilities of 42.4% to amoxicillin/clavulanic acid, 41.4% to ceftriaxone, 40.2% to ciprofloxacin, and 10.4% to trimethoprim/sulfamethoxazole (TMP/SMX). K. pneumoniae had susceptibilities of 20.7% to amoxicillin/clavulanic acid, 15.6% to ceftriaxone, 48.5% to ciprofloxacin, and 12.3% to TMP/SMX. The high resistance to 3rd generation cephalosporins indicates high rates of beta-lactamase production. This is information that clinicians need to inform clinical decision making and choice of empiric antibiotics and that UTH requires to inform antimicrobial stewardship such as improvements in antibiotic use.

Antibiotic Consumption and Resistance Pattern of 3 Coagulase-Negative Staphylococci Species: An Ecological Study

A group of coagulase-negative staphylococci (CoNS) was historically classified as a nonpathogenic bacteria. Over the last few decades, nosocomial infections caused by CoNS as opportunistic pathogens have increased and become one of the major nosocomial pathogens. The aim of this study was to identify the relationship between the use of an antibiotic agent for CoNS in Bali’s regional public hospital and the development of antibiotic resistance during 3 years period. This study was a retrospective ecological study of antibiotic resistance and antibiotic consumption secondary data collected prospectively. It was conducted over a three years period of inpatient data. Susceptibility of CoNS to antibiotics was obtained from the hospital antibiogram of all isolates from 2017 to 2019. Sensitivity results in antibiogram were based on the standards provided by the Clinical and Laboratory Standards Institute (CLSI) with the disk diffusion method. Antibiotic consumption in DDDs/100 bed-days. The relationships between DDDs/100 bed-days of each antibiotic and rates of antibiotic resistance of each resistant strain of CoNS were tested using Spearman correlation and logistic regression. There was no significant correlation between antibiotic consumption (DDD) and the percentage of antibiotic resistance among the three CoNS species (p>0.05). However, this study found there was an inverse relationship between DDD and antibiotic resistance in Staphylococcus hominis species (OR = 0.063; CI [0.004-0.915]; p=0.043). We conclude that no significant correlation between antibiotic consumption and antibiotic resistance of the 3 CoNS species. There needs to be further research to identify antibiotic consumption, antibiotic resistance and other factors affecting antibiotic resistance.

Patient risk factor stratification is essential for the hospital antibiogram

Empiric antimicrobial therapy in hospitalized patients is guided by an institution’s cumulative antibiogram, which may not be adequate in giving information on decision-making for optimal treatment in different patient populations. Adding patient risk factors can make it more useful for clinicians in guiding empiric therapy and for antimicrobial stewardship. Cumulative data were obtained for blood culture and urine isolates from the laboratory information system of a tertiary care hospital for 6 months (January to June 2019). Further stratification of organism types and resistance rates on the basis of patient risk factors (Patient Types 1, 2, and 3) was performed and analyzed. Salmonella spp. was seen in community-acquired ward patients (Types 1 and 2). Streptococcus pneumoniae was seen in Type 1 patients, and Acinetobacter spp. was seen in Type 3 patients. Extended-spectrum beta-lactamase-producing gram-negative infection rates were higher in community patients than in hospital patients. Carbapenem-resistant Enterobacteriaceae rates were high in Type 3 hospitalized patients. Cumulative blood methicillin-resistant Staphylococcus aureus rates were 43% but stratification showed it only in Type 2 and Type 3 ICU patients with 0% in ward patients. Stratified antibiograms based on patient risk factors are valuable for antimicrobial stewardship and help to optimize empiric therapy and increase the understanding of antimicrobial resistance trends.

Antibiogram of Pseudomonas species: an important tool to combat antibiotic resistance for patient safety in Gombe, Nigeria

Background: Pseudomonas species are responsible for different healthcare-associated infections and are inherently resistant to many commonly used antibiotics. Hospital antibiograms are either absent or not regularly available in most healthcare facilities in Nigeria. The objective of this study is to present the antibiogram of Pseudomonas isolates in Federal Teaching Hospital Gombe (FTHG) in order to guide antibiotic prescription for better patient safety in the hospital.Methodology: The is a hospital-based cross-sectional study. A total of 4309 bacterial isolates were recovered from aerobic cultures of routine clinical specimens including urine, sputum, blood, swabs, aspirates, biopsies, seminal fluids and cerebrospinal fluids at the Medical Microbiology laboratory of the hospital between January and December 2019. Pseudomonas species were identified by colony morphology, Gram-reaction and conventional biochemical tests. Antibiotic susceptibility testing was performed on each Pseudomonas isolate using the modified Kirby-Bauer disk diffusion method on Mueller-Hinton agar and results interpreted according to the guideline of the Clinical and Laboratory Standards Institute (CLSI). Data were analysed using the Statistical Package for Social Sciences (SPSSTM) software version 23.0.Results: Of the total 4309 bacterial isolates, 436 (10.1%) Pseudomonas species were identified, with majority (49.8%) from urine specimens. Antibiotic susceptibility test results revealed average susceptibility rates of 73.8%, 70.1%, 66.2%, 59.5%, and 34.3% to ciprofloxacin, gentamicin, levofloxacin ceftazidime, and carbenicillin respectively. These rates fluctuate only slightly for each of the antibiotic during the 12 months period of survey.Conclusion: Pseudomonas species were most sensitive to ciprofloxacin and gentamicin among the first line antibiotics in FTHG in 2019. Regular updates and presentation of hospital antibiogram especially for intrinsically resistant bacteria such as Pseudomonas involved in healthcare associated infections, is an important tool in combating antimicrobial resistance and ensuring patient safety.
 Keywords: antibiogram, Pseudomonas, antimicrobial resistance, antimicrobial stewardship, patient safety

157. A Multidisciplinary Approach to Carbapenem Stewardship at a Large Community Hospital in Brooklyn, New York

BackgroundCarbapenem-resistant gram-negative organisms are a continuously mounting threat, underscoring the need for effective antimicrobial stewardship interventions to improve the use of carbapenems. We sought to implement several multidisciplinary antimicrobial stewardship interventions beginning in January 2019 in an effort to reduce unnecessary meropenem use and the incidence of carbapenem-resistant gram-negatives.MethodsProspective audit and feedback was utilized daily in combination with weekly stewardship rounds between an Infectious Diseases pharmacist and physician in the Intensive Care Units. A second Infectious Diseases physician attended weekly interdisciplinary rounds on meropenem high-use units. Meropenem Days of Therapy (DOT) per 1,000 patient days and the incidence of meropenem resistant Pseudomonas aeruginosa and Klebsiella pneumoniae were compared by the chi-square test of proportions.ResultsBetween 2018 and 2019 the institution’s meropenem DOT per 1,000 patient days decreased 33%, from 57 to 38 days per 1,000 patient days (difference, 19 days per 1,000 patient days; p< 0.001). In the hospital antibiogram, the meropenem susceptibility of Pseudomonas aeruginosa over the same time period increased from 71% to 77% of isolates (difference, 6%; p = 0.009). A non-significant decrease in the susceptibility of meropenem to Klebsiella pneumoniae was also observed from 92 to 90% (difference, 2%: p = 0.1658).ConclusionThese data support the need for antimicrobial stewardship efforts targeting broad-spectrum antimicrobials such as meropenem. In the setting of a sustained decrease in meropenem use over 12 months, we observed a significant improvement in the percent susceptibility rate of Pseudomonas aeruginosa to meropenem for the first time in five years.Disclosures All Authors: No reported disclosures

215. Appropriateness and Accuracy of Antimicrobial Prescriptions at Pediatric Emergency Department Discharge

BackgroundUp to 20% of pediatric emergency department visits result in an antimicrobial prescription. The objective of this study was to evaluate the appropriateness and dosing accuracy of antimicrobial prescriptions given at discharge from an ED of a freestanding children’s hospital.MethodsElectronic medical records of patients seen in the ED at Oishei Children’s Hospital from 12 dates (3 in each of 4 seasons) were screened. All patients discharged from the ED with a prescription for an antimicrobial were included. Diagnosis, provider type, antibiotic dose per weight, duration and frequency were recorded. Appropriateness of antibiotic choice and dosing accuracy were assessed using major medical society guidelines, pharmacy references and hospital antibiograms. Antibiotic doses were considered inaccurate if >10% outside of recommended weight-based dose ranges.ResultsOf a total of 1733 screened patients, 12% (207) were discharged with a systemic antimicrobial prescription. The percentage of visits resulting in an antimicrobial prescription varied by season, and was highest during the winter at 19%. Amoxicillin (33% of all) and oseltamivir (15%) were most frequently prescribed. Overall, 98% of patients were prescribed the appropriate antimicrobial, but only 65% of systemic antimicrobial prescriptions had accurate dosing. Amoxicillin was dosed incorrectly in 32% of prescriptions, Figure 1, specifically being below the high-dose recommended range in 28% of otitis media (OM) and 29% of pneumonia cases. Despite being the most common diagnosis, OM was treated with accurate dosing only 57% of the time, Figure 2. Also, more than 40% of patients with UTI or pneumonia had inaccurate drug dosing. Nurse practitioners (NP) prescribed the most antibiotics. Appropriate prescribing did not vary by provider, but accuracy of dosing did; for example, NP dosing accuracy was 58%, vs. 73% for residents (p < 0.04), Figure 3.Dosing Accuracy of Antimicrobials Dosing Accuracy by Diagnosis Appropriateness and Accuracy by Prescriber Group ConclusionAn eighth of pediatric ED visits resulted in an antimicrobial prescription. Inaccurate dosing occurred regularly for common infections; most notably underdosing of amoxicillin for OM and pneumonia. Education and audit related to specific drugs and providers promises to be of high stewardship impact in pediatric EDs.Disclosures All Authors: No reported disclosures

194. Antibiotic-resistant bloodstream infections in pediatric oncology patients on levofloxacin prophylaxis

BackgroundLevofloxacin prophylaxis in pediatric oncology patients with chemotherapy-induced severe prolonged neutropenia has been shown to reduce risk for febrile neutropenia and systemic infections. With increased use of prophylaxis there is concern for development of antibiotic-resistant infections. We analyzed bloodstream infections (BSI) in pediatric oncology patients exposed to levofloxacin prophylaxis during prolonged severe neutropenic episodes to determine the rate of antibiotic resistanceMethodsWe performed a retrospective chart review of pediatric oncology patients who received levofloxacin prophylaxis between January 2015 – December 2019. Patients were placed on levofloxacin prophylaxis based on institutional guidelines for patients at risk for severe prolonged neutropenia (i.e., absolute neutrophil count [ANC] < 500 cells/µL for >7 days). Demographic information, start and end dates for levofloxacin prophylaxis, and all BSI episodes within 2 months after exposure to the fluoroquinolone were collectedResultsThirty-five patients were identified who received levofloxacin prophylaxis. There were 32 BSI in 12 patients. Twenty-five BSI involved gram-positive organisms (GP), including nine (36%) due to coagulase negative Staphylococcus and seven (28%) due to viridans Streptococcus. Seven BSI episodes involved gram-negative (GN) organisms with 4 (57%) from E.coli. Resistance to fluroquinolones was noted in 42% and 48% of BSI from GN and GP organisms respectively. The vast majority (85%) of viridans Streptococcus isolates were resistant to levofloxacin. In contrast, 8% of viridans Streptococcus isolates were resistant to fluoroquinolones from the same time frame per our hospital antibiogram.ConclusionIn this recent cohort of pediatric oncology patients with BSI after exposure to levofloxacin prophylaxis, there was a high percentage infected with fluoroquinolone-resistant organisms.This contrasts with some of the earlier published data from adults which reported low rate of fluoroquinolone resistance. This case series highlights the need for close monitoring for development of antibiotic resistance as utilization of prophylactic levofloxacin increases in pediatric oncology patients.Disclosures All Authors: No reported disclosures

138. Focused Outpatient Antibiograms: Time for Widespread Implementation?

BackgroundSignificant antimicrobial use occurs in outpatient settings, making this an important area for expanding stewardship. Data show over 260 million annual prescriptions in the U.S. Family practitioners prescribed the most antibiotic courses (24%)1. Urinary Tract Infections (UTI) comprise one of the most common indications for antibiotics. In this study, antibiogram data were compiled for urinary isolates of E coli collected from all outpatients as well as Family Medicine-specific (FM) clinics in an academic medical center in Eastern NC. The objective is to identify susceptibility variations for E. coli from urine isolates specific to combined outpatient and academic FM clinics compared to composite non-intensive care unit (ICU) data. Also, assess impact of providers’ knowledge/access to a focused antibiogram on choice of empiric therapy.MethodsData were electronically obtained from the microbiology laboratory at Vidant Health (VH), a large regional system serving over 1.4 million people from 29 counties in Eastern NC. All urine cultures with E. coli from 9/2018 - 9/2019 were included. Two focused antibiograms were then developed via MedMind.A pre and post intervention survey was conducted with FM practitioners, including residents. Intervention was defined as a brief talk to educate providers about variations identified via focused antibiograms. Survey results were compared to assess for intent to change practice.ResultsPre-survey data are noted in Figure 1. Post-survey changes are described in Figure 2 noting that 100% of respondents now felt a need to have access to focused antibiogram data.There were 1107 E coli urinary isolates for all outpatients and 104 for FM clinics only. Figure 3 highlights key differences in antibiogram data, especially enhanced susceptibilities for common antibiotics in FM-specific clinics when compared to composite institutional data.Pre-Intervention Survey Post-Intervention Survey Comparison of Antibiogram ConclusionComposite hospital antibiograms may not be optimal for determining empiric UTI treatment in the community and antibiotic selections thought to be suboptimal in an institution may be effective in outpatient settings. Thus, antibiograms developed specifically for outpatient clinics, especially in academic centers, have potential to greatly enhance appropriate care.Disclosures Paul P. Cook, MD, Contrafect (Grant/Research Support, Scientific Research Study Investigator)Gilead (Grant/Research Support, Scientific Research Study Investigator)Leonard-Meron (Grant/Research Support, Scientific Research Study Investigator)Lilly (Grant/Research Support, Scientific Research Study Investigator)

Antimicrobial Stewardship Program in Critical Care-Need of the Hour.

Maximum antibiotic usage within hospitals occurs in critical care areas. Reasons for this usage are the moribund state of patients, invasive devices, and protocol based necessity for empiric antibiotic initiation in most critical conditions. Although unavoidable, prudent use of antibiotics (empiric and therapeutic) should be tailored based on national or if available, unit-based hospital antibiogram. This forms the footstool of every antibiotic policy formulated at tertiary care hospitals. Strict adherence to antibiotic policy formulated based on hospital antibiogram largely benefits patients and hospital-wide antimicrobial stewardship is ensured. The necessity, benefits, key targets, and usefulness of antimicrobial stewardship program (AMSP) in critical care has been elaborated in this review.How to cite this article: Vadala R, Princess I. Antimicrobial Stewardship Program in Critical Care—Need of the Hour. Indian J Crit Care Med 2020;24(9):847–854.

2288. Role of Β Lactam-Β Lactamase Inhibitors in Indian Tertiary Care Hospitals: Results from a Nationwide Survey

BackgroundBroad-spectrum antibiotics, particularly third-generation cephalosporins, are routinely used in the treatment of nosocomial infections. The emergence of Extended Spectrum Β-Lactamase (ESBL)-producing pathogens in Indian tertiary care hospitals warrants the need to reassess β-lactam–β-lactamase inhibitors (BL-BLIs) as better alternative treatments.MethodsAn online survey was conducted by Pfizer India to understand the usage of BL-BLIs across Indian hospitals. The survey was administered to 334 clinicians across multiple specialties out of which 195 were from tertiary care hospitals. Results were analyzed using MS-Excel statistical tools.ResultsOne-hundred ninety-five (195) clinicians from tertiary care hospitals completed the survey. About 78% of HCPs revealed the resistance to third-generation cephalosporins (e.g., ceftriaxone, ceftazidime) to be between 10–60% in their clinical settings. BL-BLIs were mostly preferred for treatment based on hospital antibiograms (64%) and used as first-line options for hospitalized adults with mild-moderate severe infections caused by ESBL-producing organisms (71%) and in mild-moderate infections caused by susceptible Gram-negative bacteria such as Enterobacteriaceae (54%). The average duration of IV BL-BLI treatment was 5–7 days (66%). The HCPs considerations while choosing BL-BLIs were mainly based on anti-microbial spectrum (81%), and rationality of BL/BLI combination (63%) and clinical experience with the BL-BLI molecule (63%). Cefoperazone-Sulbactam (CS) and Piperacillin–tazobactam (PT) were most commonly prescribed BL-BLIs and HCPs preferred the latter for pneumonia (67%), skin and soft-tissue infections (57%), bloodstream infections (67%) and cancer-associated febrile neutropenia (64%); while they preferred former for urinary tract infections (64%). CS and PT were preferred for intra-abdominal infections (57% and 64% respectively) and post-surgical infections (56% and 53% respectively).ConclusionCS and PT were the most commonly prescribed BL-BLIs probably due to their wide antimicrobial spectrum, rationality of the BL/BLI combination and the clinical experience with the molecules. BL-BLIs are still a mainstay of treatment for infections due to ESBL producing organisms. Disclosures All authors: No reported disclosures.

2095. Antimicrobial Stewardship (ASP) in Rural and Critical Access Hospitals (CAHs) Using TeleStewardship® Services

BackgroundMDstewardship® is a physician-owned company that uses TeleStewardship® services, which consist of telephone and HIPPA-compliant teleconferencing and texting, to provide rural and critical access hospital (CAH) ASP services, ensuring facilities remain compliant with Joint Commission ASP requirements. MDstewardship® also provides monthly webinars to all participating hospital personnel for continuing education. Webinars are live, interactive, and contain topics based on IDSA guidelines. MDstewardship® personnel discuss antibiotics with the hospital staff using a HIPPA-compliant secure audio-video feed, phone conference, or secure-text. CAH pharmacists discuss the antibiotics currently being given in their institution and MDstewardship® personnel provide further ASP recommendations. ASP recommendations are provided by MDstewardship® clinically-trained infectious disease pharmacists and infectious disease physicians, and are communicated to on-site pharmacists or directly with providers.MethodsMDstewardship® is active with many rural CAHs in Nebraska, and over 20 hospitals nationally. Here we report our ASP results for 10 CAHs in Nebraska from August 2018 to April 2019. A total of 401 ASP recommendations were given over that time.ResultsThe top three most common infectious diseases diagnoses involving recommendations were UTI (16.7%), pneumonia (15.2%), and bacteremia (13.7%). Most common ASP interventions included alternative therapy (15.7%), additional therapy (13.7%), oral step-down therapy (12.7%), and further laboratory monitoring (12.5%). Additional daily antimicrobial stewardship assistance includes: development of hospital protocols, order-sets, antibiograms and guideline adherence. Total acceptance of ASP recommendations averages > 90%. Reimbursement is based on a contract over 12 months.ConclusionThe use of TeleStewardship® services allow CAHs to have 24/7 infectious disease specialist and clinically trained antimicrobial stewardship pharmacist support with a high number of interventions and a high acceptance of recommendations. The goal of this program is to give the right antibiotic, right dose, for the right duration, for each patient.Disclosures All authors: No reported disclosures.

1608. Use of Selective Reporting of Antimicrobial Susceptibilities and Its Impact on Antimicrobial Resistance Surveillance—National Healthcare Safety Network, 2017–2018

BackgroundSelective reporting (SR), recommended by the 2016 IDSA/SHEA antimicrobial stewardship guidelines, is a strategy to guide prescribing decisions by limiting the antimicrobial susceptibility testing (AST) results available to prescribers. Yet, SR carries risks that cumulative antibiograms reflect only partial AST results. The Clinical Laboratory Standards Institute (CLSI) M100 performance standards stipulate that AST results should be routinely reported for some antimicrobials (Group A agents) while SR is appropriate for other antimicrobials (Group B agents). We assessed the extent of SR use and its impact on national antimicrobial resistance (AR) surveillance.MethodsWe used Enterobacteriaceae (EB) and Staphylococcus aureus (SA) blood culture AST results that hospitals reported for group A and B agents to the CDC’s National Healthcare Safety Network’s AR option from 2017 through 2018. Routine reporting for an organism-agent combination was defined as results reported for ≥ 90% isolates for the hospital’s most frequently reported agents. SR was defined as a shortfall of > 20% in results reported for an agent compared with a routinely reported agent in a hospital that reported ≥ 30 isolates. We compared hospital antibiograms between SR and non-SR hospitals. We also identified isolate characteristics associated with AST reporting in SR hospitals.ResultsAmong 242 and 185 hospitals reported ≥ 30 isolates, many showed patterns of SR (Figure 1). Of 437 and 425 hospitals reported ≥ 1 isolate, only 112 (26%) and 152 (36%) routinely reported AST results for all group A agents for EB and SA, respectively. For EB, 345 (79%) hospitals routinely reported AST results for ciprofloxacin or levofloxacin, although both are group B agents. For SA, 324 (76%) routinely reported vancomycin (Figure 2). Antibiograms for many agents differed between SR and non-SR hospitals (Figure 3, 4). In SR hospitals, non-susceptibility to narrower-spectrum drugs, patient location, age, and some species among EB were associated with AST reporting.ConclusionAST results reporting vary across hospitals and agents, and CLSI’s SR standards are used inconsistently. For AR surveillance, complete reporting calls for solutions that bypass SR. In the meantime, SR should be taken into account in national AR benchmarking. Disclosures All authors: No reported disclosures.