Impact Of Antibiotic Resistance Research Articles

Distribution of antibiotic resistance genes and antibiotic residues in drinking water production facilities: Links to bacterial community.

There is a rapid spread of antibiotic resistance in the environment. However, the impact of antibiotic resistance in drinking water is relatively underexplored. Thus, this study aimed to quantify antibiotic resistance genes (ARGs) and antibiotic residues in two drinking water production facilities (NW-E and NW-C) in North West Province, South Africa and link these parameters to bacterial communities. Physicochemical and ARG levels were determined using standard procedures. Residues (antibiotics and fluconazole) and ARGs were quantified using ultra-high performance liquid chromatography (UHPLC) chemical analysis and real-time PCR, respectively. Bacterial community compositions were determined by high-throughput 16S rRNA sequencing. Data were analysed using redundancy analysis and pairwise correlation. Although some physicochemical levels were higher in treated than in raw water, drinking water in NW-E and NW-C was safe for human consumption using the South African Water Quality Guideline (SAWQG). ARGs were detected in raw and treated water. In NW-E, the concentrations of ARGs (sul1, intl1, EBC, FOX, ACC and DHA) were higher in treated water than in raw water. Regarding antimicrobial agents, antibiotic and fluconazole concentrations were higher in raw than in treated water. However, in NW-C, trimethoprim concentrations were higher in raw than in treated water. Redundancy analysis showed that bacterial communities were not significantly correlated (Monte Carlo simulations, p-value >0.05) with environmental factors. However, pairwise correlation showed significant differences (p-value <0.05) for Armatimonas, CL500-29 marine group, Clade III, Dickeya and Zymomonas genera with environmental factors. The presence of ARGs and antibiotic residues in the current study indicated that antibiotic resistance is not only a clinical phenomenon but also in environmental settings, particularly in drinking water niches. Consumption of NW-E and NW-C treated water may facilitate the spread of antibiotic resistance among consumers. Thus, regulating and monitoring ARGs and antibiotic residues in drinking water production facilities should be regarded as paramount.

The impact of antibiotic resistance on the rampant spread of infectious diseases in Pakistan: Insights from a narrative review.

Antibiotic resistance (ABR) is a global public health emergency which has seen an uptick in low- to middle-income countries in recent times due to a plethora of aggravating factors and has led to a whole host of setting-specific pathogens registering high rates of resistance, causing outbreaks with graver mortality and morbidity. This review analyzes available literature to determine the causes and effects of ABR and recommend solutions to the problem in a Pakistani setting. Sources for this narrative review were identified via electronic databases using keyword search methods. The information was retrieved using databases such as PubMed and Science Direct. Additionally, websites such as CDC and World Health Organizationwere used to attain pertinent information. All the sources were selected as per their relevance and appropriateness towardthe purpose of this review. This review details the causes by dividing them into three primary strata, namely (1) under-regulation, (2) over-prescription and self-medication, and (3) lack of medical stewardship. This is made much graver when the COVID-19 pandemic and the subsequent erratic treatment response is considered, with the pandemic augmenting already high levels of consumption. These factors have led a cascade of effects including, but not limited to, a considerable increase in ABR in pathogens to first-line drugs. ABR is a serious and growing issue which will result in undesirable personal, local, and national consequences if unchecked. Mitigation and reversal of this trend is necessary by developing existing programs and investing in novel therapies and pharmaceutical research and strengthening regulatory policies and mechanisms.

Impact of Antibiotic Resistance on Public Health and Food Safety: A Review of Shigella Infections

Impact of Antibiotic Resistance on Public Health and Food Safety: A Review of Shigella Infections

The impact of antibiotics on the environment and human body

Antibiotics, as a typical new pollutant in environmental media, have important implications for the treatment of water sources, soil, livestock, and humans. This article summarizes the effects of antibiotics on sewage, water sources, soil, water circulation, and plankton in the water, as well as the underlying reasons, by analyzing and summarizing other papers. It also provides analysis and solutions for antibiotics. Not only that, this article also reviews the reasons for the excessive use of antibiotics in clinical treatment and the impact of antibiotic resistance on clinical treatment. It also reviews the emergence and treatment of antibiotic resistance in the human body. Through the above plan, this article summarizes the impact of antibiotics on the environment and the human body.

An Insight of Antimicrobial Resistance in Integrated Crop-Livestock-Forestry System (ICLFS). A Mini Review

Antimicrobial resistance (AMR) has become one of the major public health issues ofthe twenty-first century that poses a threat to human, animal and environment. Antibiotic abuseand misuse have contributed to the recent rise in AMR, and the usage of antibiotics in food-producing animal has selected for and spread resistant microorganisms. The high demand of meat to fulfill the worldwide population may force the farmer to employed the antibiotics in livestock production due to diseases obstacle. The integrated systems are one of the many systems utilized in the management of livestock enterprises. This mini review aimed to providea scenario of the state of the AMR development in Integrated Crop-Livestock-Forestry System (ICLFS) related to antibiotic application in the livestock and impact of antibiotic resistance in the system where animal, environment and human are interconnected.

Stop antibiotic resistance - A roller coaster ride through "antibiotic stewardship," "prescription auditing" and "AWaRe" assessment tool.

The emergence of superbugs and highly resistant organisms like methicillin-resistant staphylococci, vancomycin-resistant enterococci, carbapenem-resistant enterobacteriaceae demands the monitoring of antibiotic prescription and usage in various domains. The impact of antibiotic resistance is huge that it increases mortality, morbidity, and economic costs. The issue has to be addressed at various levels and that is why regulatory bodies implement antibiotic stewardship programs. These programs give a list of guidelines like infection control, tracking antibiotic use, prescription auditing, and involvement of health professionals like pharmacists, nurses, etc., A comparison of the list of guidelines given by the Centre for Disease Control and Prevention and Indian Council of Medical Research gives an idea about the measures to be taken at various levels to reduce the burden of antibiotic resistance. Prescription auditing is one of the major components of antibiotic stewardship. The auditing can be done either prospectively or retrospectively using WHO core prescribing indicators and antibiotic-specific indicators. An AWaRe assessment tool was also used to evaluate antibiotic consumption in countries and hospitals. The antibiotics are classified into access, watch and reserve categories. The aim of implementing the AWaRe tool is to increase the rational use of access antibiotic and reduce the consumption of watch and reserve antibiotics. This review focuses on the importance of prescription auditing, AWaRe tool and antibiotic stewardship in decreasing the threat of antibiotic resistance.

Measuring clinical outcomes of highly multiplex molecular diagnostics for respiratory infections: A systematic review and conceptual framework.

To review methodologies and outcomes reporting among these studies and to develop a conceptual framework of outcomes to assist in guiding studies and production of clinical metrics. PubMed and Embase from January 1, 2012, thru December 1, 2021. Studies evaluating highly multiplex molecular respiratory diagnostics and their impact on either clinical or economic outcomes. A systematic literature review (SLR) of methodologies and outcomes reporting was performed. A qualitative synthesis of identified SLRs and associated primary studies was conducted to develop conceptual framework for outcomes. Ultimately, 4 systemic literature reviews and their 12 associated primary studies were selected for review. Most primary studies included patient outcomes focusing on antimicrobial exposure changes such as antibiotic (80%) and antiviral use (50%) or occupancy changes such as hospital length of stay (60%). Economic outcomes were infrequently reported, and societal outcomes, such as antibiotic resistance impact, were absent from the reviewed literature. Qualitative evidence synthesis of reported outcomes yielded a conceptual framework of outcomes to include operational, patient, economic, and societal domains. Our review highlights the significant heterogeneity in outcomes reporting among clinical impact studies for highly multiplex molecular respiratory diagnostics. Furthermore, we developed a conceptual framework of outcomes domains that may act as a guide to improve considerations in outcomes selection and reporting when evaluating clinical impact of these tests. These improvements may be important in synthesizing the evidence for informing clinical decision making, guidelines, and financial reimbursement.

Perception of poultry veterinarians on the use of antimicrobials and antimicrobial resistance in egg production

This study aimed to describe the perception of veterinarians who work with commercial laying hens in the state of Rio Grande do Sul, Brazil, regarding the use of antibiotics and their possible impacts on animal, human, and environmental health. A descriptive epidemiological study was carried out through face-to-face or web conferencing interviews with the veterinarians that provide technical assistance at commercial laying hen operations. A standardized and structured questionnaire was developed based on the literature and expert opinion, which contained 1 opened and 40 closed questions. Conventional non-probabilistic sampling was used, based on an initial list of 15 veterinarians registered in the Poultry Production Association of Rio Grande do Sul, followed by the snowball technique. The acquisition of 26 contacts of veterinarians was accomplished, and 16 were interviewed. Through the answers obtained it was possible to verify that the interviewees' understanding regarding both the antibiotic resistance impact and the decision-making about the use of antibiotics seem to be linked to their practical experiences. Besides that, according to the veterinarians, farmers can acquire and administer the antimicrobials on their farms. Moreover, both farm storage and administration of lower doses of antibiotics than the recommended one could be contributing factors to resistant bacteria selection. Furthermore, controversially, the professionals believed that resistant bacteria can be transmitted to humans from eggs, but they said that there are no bacteria in eggs. Therefore, the veterinarians´ practices can be improved considering national and international guidelines on antimicrobial resistance to minimize the development of resistance. Finally, it is expected that the present results will contribute to a more complex discussion about antimicrobial resistance, helping to formulate public policies in the egg production industry.

Knowledge, Attitudes and Practices of Patients on Antibiotic Resistance and Use in Public Hospitals of Amhara Regional State, Northwestern Ethiopia: A Cross-Sectional Study.

BackgroundAlthough inappropriate antibiotic use could contribute to the spread of antimicrobial resistance, data on the knowledge, attitude and practice of antibiotic use and resistance among patients in north-western Ethiopia are scarce. This study assessed patients’ knowledge, attitudes and practices regarding antibiotic use and resistance in selected public hospitals of Amhara regional state, Ethiopia.MethodsA cross-sectional study was conducted in selected public hospitals of Amhara regional state from November to December 2020 to assess the knowledge, attitude, and practice of patients on antibiotic resistance and use. Data were collected from 233 participants using a structured questionnaire and analyzed using SPSS version 23.ResultsAccording to the findings, 60.3% of the participants obtained their antibiotics without a prescription from private pharmacies, and the most commonly used antibiotic to treat human diseases was ampicillin (70.7%). Even though 69.8% of the patients heard about antibiotics and antibiotic resistance from several sources, 68.1–87.9% of them were unaware on the factors that contribute to the transmission of resistant bacteria to humans and the impact of antibiotic resistance on human and animal health. Using the mean score of 3.15 ± 0.08 as the cut-off, 37.5% of patients know about antimicrobial resistance and use. With a mean score of 27.6 ± 0.3, 45.3% of patients had positive attitudes toward prudent antibiotic use and resistance. About 44% of participants had a good practice, with a mean practice score of 4.95 ± 0.17. A higher level of education was associated with better knowledge, positive attitudes, and better practices regarding antibiotic use and resistance. Although 57.3% of respondents viewed poor handwashing practices in hospitals as a major factor contributing to increased antibiotic resistance, 59.9% of respondents viewed implementing hygiene, infection prevention, and control practices as a major strategy contributing to reducing antibiotic use and resistance.ConclusionAccording to the present study, there is a low level of awareness among patients about the proper antibiotics use and resistance. It is essential to raise awareness, develop, and implement interventions to reduce antimicrobial use and antibiotic resistance in the study area.

Bad bugs: antibiotic-resistant bacteriuria in pregnancy and risk of pyelonephritis

The introduction of antibiotics has significantly reduced morbidity and mortality from microbial infections, but the rise of antibiotic-resistant and multidrug-resistant microbes is of increasing clinical concern. Few studies have examined the prevalence and impact of antibiotic resistance in common antenatal infections. This study aimed to determine whether pregnant women with a urine culture positive for antibiotic-resistant or multidrug-resistant gram-negative bacteria are at increased risk of developing pyelonephritis than pregnant women infected with antibiotic-susceptible organisms. This was a retrospective cohort study of pregnant women with asymptomatic bacteriuria or acute cystitis from a single health system from July 2013 to May 2019. Women with gram-negative antibiotic-resistant (resistance to 1-2 antibiotic classes) and multidrug-resistant (resistance to ≥3 antibiotic classes) lower urinary tract infections were compared with women with antibiotic-susceptible urinary tract infections in terms of demographic, infectious, antepartum, and intrapartum data. The primary outcome was pyelonephritis, defined as a billing code for pyelonephritis plus fever or flank pain. The secondary outcomes were length of stay in the hospital because of pyelonephritis, a composite of pyelonephritis complications (renal abscess, sepsis, and intensive care unit admission), and preterm delivery. The differences in the primary outcome were analyzed using multivariate logistic regression. A total of 573 women were eligible for inclusion. Of the 573 women, 334 (58%) had gram-negative bacteria on urine culture. Of the 334 cases, 173 (52%) were antibiotic susceptible, 74 (22%) were antibiotic resistant, and 87 (26%) were multidrug resistant. Women with antibiotic-resistant and multidrug-resistant infections were more likely to have hypertension (P=.004), to be Black (P=.03), to have public insurance (P=.002), and to experience more urinary infections (P=.001). Pyelonephritis was more common in women with antibiotic-resistant (adjusted odds ratio, 2.27; 95% confidence interval, 1.08-4.78) and multidrug-resistant (adjusted odds ratio, 3.06; 95% confidence interval, 1.57-5.96) infections than in women with antibiotic-susceptible urinary tract infections. Length of stay, preterm delivery, and pyelonephritis complications did not differ between antibiotic-susceptible and antibiotic-resistant and multidrug-resistant infections. In an age of increasing antibiotic resistance, more than one-half of pregnant women with bacteriuria experience at least 1 infection with an antibiotic-resistant organism. These resistance patterns have a real clinical impact as pregnant women with antibiotic-resistant gram-negative lower urinary tract infections have an estimated 2- to 3-fold increased odds of developing pyelonephritis.

Knowledge, attitudes and practices of animal farm owners/workers on antibiotic use and resistance in Amhara region, north western Ethiopia

Inappropriate use of antibiotics in animal and human plays a role in the emergence and spread of bacteria resistant to antibiotics which threatens human health significantly. Although extensive use of these antibiotics could contribute to the development of drug resistance, information on the knowledge, attitude and practice of antimicrobial resistance and use among animal farm owners/workers in north western Ethiopia is rare. The objective of the present study was to assess knowledge, attitude and practice of animal farm owner/workers towards antibiotic resistance and use in Amhara regional state north western Ethiopia. A cross sectional study was conducted in selected cities of Amhara regional state from January to February, 2020. Data was collected from 91 participants using structured questionnaire and analyzed using SPSSS version 23. The results showed that 96.7% of respondents gave antibiotics to treat their livestock from different sources. Most of the respondents bought their antibiotics from private pharmacies without prescription and the most frequently mentioned antibiotics used to treat animal diseases was tetracycline (76.9%), followed by ampicillin (72.5%). Although, 90.1% of the animal farm owners heard about antibiotics and antibiotic resistance from different sources, they did not know the factors contributing to the transmission of resistant bacteria to humans and the impact of antibiotic resistance on human and animals’ health. Using the mean score 4.44 ± 0.15 as the cut-off, half of the animal farm owners/workers had good knowledge about antimicrobial resistance and use. 52.5% of animal farm owners/workers had positive attitudes towards wise antibiotic use and resistance with a mean score of 28.4 ± 0.5. However, 52.75% participants had poor practice with the mean score of practice 4.95 ± 0.17. Better knowledge, positive attitudes and better practices on antibiotic use and resistance were associated with farm owners/workers who engaged in higher education. Although poor awareness on antimicrobial resistance was perceived by 76.9% of respondents as very important factors that contribute to increasing antibiotic resistance, increasing the use of complementary treatments was perceived by the majority of respondents as very important strategies that contribute to reduce antibiotic use and resistance. The current study disclosed that there is low level of awareness among animal farm owners about the correct use of antibiotics and resistance. It is necessary to raise awareness, develop and implement interventions to reduce antimicrobial use and antibiotic resistance in the study area.

Antibiotic resistance - a new challenge following the COVID-19 pandemic

Antibiotic resistance represents a huge challenge to mankind, directly affecting human and animal health. The importance of the problem is reinforced by the fact that no new effective antibiotics are expected to be introduced in the next 10-15 years, and the impact of antibiotic resistance on health is expected to increase exponentially in the coming decades. Various sources describe a significant increase in the use of antibiotics during the COVID-19 pandemic, which hides a danger of the development of highly resistant microorganisms. This can have a negative impact on the fragility of emergency patients attending intensive care units. This review examines published data on the use of antibiotics during the COVID pandemic and the risk of increasing antibiotic resistance that this may lead to. This is a problem that needs to be taken seriously so that the battle with COVID-19 does not lead to another threat to humanity.

Editorial introductions.

Editorial introductions.

Skutki antybiotykooporności – co już wiemy, a czego możemy się spodziewać?

Antibiotic resistance is a multidimensional and global problem having an effect far beyond hospital units. There is a substantial incearse in the number of scientific publications and reports commisioned by international organisations aiming to asses the consequences and costs of antibiotic resistance spread. To establish appropriate guidelines several approaches modelling further impact of antibiotic resistance on human health and economic costs were performed. The aim of this paper is to summarise knowledge about current and possible consequences of antibiotic resistance spread among bacteria.

General principles of antibiotic resistance evolution in bacteria (review of literature).

Currently, the impact of antibiotic resistance on human health is a worldwide problem and its study is of great interest from a molecular genetic, environmental and clinical view-point. This review summarizes the latest data about antibiotic resistance, the classification of microorganisms as sensitive and resistant to the action of antibiotics, reveals the concept of minimum inhibitory concentration from modern positions. The resistance of microorganisms to antibacterial agents can be intrinsic and acquired, as well as being one of the examples of evolution that are currently available for study. Modern methods of whole-genome sequencing and complex databases of nucleotide-tagged libraries give an idea of the multifaceted nature of the mechanisms of intrinsic resistance to antibiotics and are able to provide information on genes encoding metabolic enzymes and proteins that regulate the basic processes of the physiology of bacteria. The article describes the main ways of spreading the resistance of microorganisms, reflects the concepts of "founder effect" and the fitness cost of bacteria, which underlie the emergence and evolution of antibiotic resistance. It is shown that the origin of antibiotic resistance genes that human pathogens currently possess can be traced by studying the surrounding not only clinical, but also non-clinical (ecological) habitats. As well as microorganisms of the surrounding ecosystems are the donors of resistance genes in horizontal gene transfer.

UTI – Quo Vadis? New Alternatives to Treat Uncomplicated Urinary Tract Infections

Urinary tract infections (UTI) are one of the most common problems in urology clinics. The European Association of Urology (EAU) has been pioneering in its efforts to disseminate the latest clinical findings through the organization of the annual EAU congresses. At this year’s congress (EAU Barcelona 2019), various satellite symposia were organized, focusing on specific issues in the field of urology. “UTI – quo vadis? New alternatives to treat uncomplicated urinary tract infections” was one of the industry-sponsored symposia, organized with the aim of evaluating the current scenario and also throwing light on the paradigm shift in the treatment of acute, uncomplicated lower urinary tract infections (uUTI). Several interlinking topics were presented during this symposium. The topics covered antibiotic resistance, involving a presentation of the current data from the Global Prevalence Study on Infections in Urology (GPIU-study). This discussion was followed by case reports on the impact of antibiotic resistance on the management of patients with UTI/uUTI and treatment options for UTI/uUTI according to current guidelines. The highlight of the symposium was the presentation of very recent data from a gold standard phase III clinical trial (double-blind, double-dummy randomized study), demonstrating the non-inferiority of a herbal medicine( BNO 1045) versus antibiotic therapy (fosfomycin trometamol (FT), as a single dose = 3 g) for the treatment of acute, uncomplicated cystitis.

Инфекции дыхательных путей в педиатрической практике: сложные ответы на простые вопросы

Despite modern highly-effective treatment and preventive tools available to physicians, respiratory tract infections (RTIs) are still the most common reason for referral to pediatricians. A myriad of papers are published every year, however, there is a growing concern over this issue. This paper responds to seemingly simple questions that, however, are often challenging and controversial for physicians and pediatricians. These questions are the use of antibiotics for acute RTIs to prevent bacterial complications, the impact of antibiotic resistance of respiratory pathogens (Streptococcus pyogenes, Streptococcus pneumoniae, and Haemophilus influenzae) on antibacterial treatment choice, current position of macro-lides in the treatment for RTIs and ENT infections, the prescription of aminopenicillins and inhibitor-protected aminopenicillins in specific clinical situations, dosage regimens of amoxicillin and amoxicillin/clavulanic acid in pediatrics, the position of peroral third-generation cephalosporins in the treatment for RTIs, and optimal antibacterial treatment duration in children. Pediatricians often face these issues in routine clinical practice.Keywords: pediatrics, respiratory tract infections, acute respiratory disorders, antibiotics, antibiotic resistance.For citation: Andreeva I.V., Stetsyuk O.U., Egorova O.A. Respiratory tract infections in pediatrics: difficult answers to simple questions. Russian Journal of Woman and Child Health. 2020;3(2):105–111. DOI: 10.32364/2618-8430-2020-3-2-105-111.

Impact of Antibiotic Resistance on Treatment of Pneumococcal Disease in Ethiopia: An Agent-Based Modeling Simulation

Antimicrobial resistance (AMR) is a growing threat to global health. Although AMR endangers continued effectiveness of antibiotics, the impact of AMR has been poorly estimated in low-income countries. This study sought to quantify the effect of AMR on treatments for pediatric pneumococcal disease in Ethiopia. We developed the DREAMR (Dynamic Representation of the Economics of AMR) model that simulate children younger than 5 years who acquire pneumococcal disease (pneumonia, meningitis, and acute otitis media) and seek treatment from various health facilities in Ethiopia over a year. We examined the AMR levels of three antibiotics (penicillin, amoxicillin, and ceftriaxone), treatment failures, and attributable deaths. We used the cost-of-illness method to assess the resulting economic impact of AMR from a societal perspective by estimating the direct and indirect treatment costs and productivity losses. Findings showed that AMR against antibiotics that were used to treat pneumococcal disease led to 195,763 treatment failures per year, which contributed to 2,925 child deaths annually in Ethiopia. Antimicrobial resistance resulted in a first-line treatment failure rate of 29.4%. In 1 year, the proportion of nonsusceptible Streptococcus pneumoniae bacteria increased by 2.1% and 0.5% for amoxicillin and penicillin, and reduced by 0.3% for less commonly used ceftriaxone. Annual costs of AMR to treat pneumococcal disease were around US$15.8 million, including US$3.3 million for ineffective first-line treatments, US$3.7 million for second-line treatments, and US$8.9 million for long-term productivity losses. Antibiotic stewardship to reduce misuse and overuse of antibiotics is essential to maintain the effectiveness of antibiotics, and lessen the health and economic burden of AMR.

187. The 30-Day Readmission and 30-Day Mortality of Hemodialysis Patients with Antibiotic-Resistant Gram-Negative Bacteremia

BackgroundAlthough antibiotic-resistant (AR) Gram-negative infections are more prevalent in hemodialysis (HD) patients, there are limited data on the impact of antibiotic resistance on clinical outcomes. The primary objective of this study was evaluating 30-day readmission and 30-day all-cause mortality of HD patients with AR-Gram-negative bacteremia (GNB). The secondary objective was assessing the association of risk factors for AR-GNB and Infectious Diseases (ID) consult with the primary outcomes.MethodsThis was a single-center, retrospective, cohort study, which enrolled adult HD patients with AR-GNB between January 1, 2010 and December 31, 2018. The AR included extended-spectrum β-lactamase (ESBL), carbapenem resistance (CR; resistant to at least one carbapenem), and multidrug resistance (MDR; resistant to at least one agent in three antibiotic classes). The risk factors for AR-GNB included: antibiotic use and long-term care facility stay within 90 days, hospitalization >30 days, central line, urinary catheter, and invasive medical device use, and severe underlying illness. Statistical analysis involved chi-square and Fisher’s exact tests.ResultsA total of 90 patients were included. The most common pathogen and source were Klebsiella pneumoniae (42.2%) and urine (29.5%), respectively. The most common AR was ESBL (39.6%), followed by CR and MDR (both 29.7%). Overall, 30-day readmission and 30-day all-cause mortality were 22% and 38.5%, respectively. Long-term care facility stay within 90 days was more likely associated with 30-day readmission (odds ratio [OR] 3.46, 95% confidence interval [CI], 0.99–12.15; P = 0.048), although it was not observed with multivariate analysis (P = 0.223). Hospitalization >30 days (OR 0.25, 95% CI, 0.1–0.64; P = 0.003) and ID consult (OR 0.13, 95% CI, 0.05–0.36; P < 0.0001) were less likely associated with 30-day all-cause mortality according to multivariate analysis. Overall, MDR was more likely associated with 30-day all-cause mortality than ESBL (P = 0.02) and CR (P = 0.002).ConclusionTo our knowledge, this is the first study evaluating the impact of AR-GNB in HD patients on 30-day readmission and 30-day all-cause mortality. Hospitalization of >30 days and having ID consult were less likely associated with 30-day all-cause mortality.Disclosures All authors: No reported disclosures.

Hourly Effect of Pretreatment With IV Antibiotics on Blood Culture Positivity Rate in Emergency Department Patients.

Although it is intuitive that antibiotics administered before obtaining a blood culture would reduce the likelihood of obtaining a positive culture, it is not clear exactly how rapidly and to what extent blood becomes sterile after administration of intravenous (IV) antibiotics. Using a large data set of patients admitted from the UFHealth Shands Adult Emergency Department (ED) between 2012 and 2016 (n = 25 686), we had the opportunity to more closely examine the effect of starting IV antibiotics before vs after obtaining blood cultures. We present data on the effect of pretreatment with IV antibiotics for both septic and nonseptic ED patients on the blood culture positivity rate on an hour-by-hour basis, as well as the effects on distribution of species recovered and the impact of antibiotic resistance in empiric treatment with antibiotics.