bluuebunny/crossref_metadata_2025_split huggingface dataset:
193. Adding Insalt to Injury: Evaluating the Consequences of Sepsis Protocols on Patients with Heart Failure
Authors: Fornaro Rachyl , Sandhu Kamaldeep , Escobar Zahra 
Published: January 2021

Abstract

Background
Inpatients with acute decompensated heart failure (ADHF) frequently meet sepsis criteria defined by the systemic inflammatory response syndrome (SIRS). To meet CMS guidelines, they receive a fluid bolus and broad-spectrum antibiotics, like piperacillin/tazobactam (pip/tazo), within 3 hours of presentation. A daily regimen of pip/tazo can contain as much as 1040 mg, or half the recommended dietary intake, of sodium. The objective of this investigation was to evaluate volume overloading and clinical consequences of sepsis protocols in patients with ADHF.

Methods
We reviewed inpatients ≥18 years old with ADHF per ICD-10 codes and an IV loop diuretic order who were initiated on a sepsis bundle, identified by IV fluid bolus and IV antibiotic orders. Patients who received ≥16 g of pip/tazo consecutively were compared to those who received other antibiotics. Outcomes included change in fluid homeostasis defined by increase in diuretic dose or frequency, or a weight increase ≥1 kg within a calendar day after receiving antibiotics; discharge disposition, length of stay (LOS), and 30-day readmission.

Results
We identified 95 patients admitted from 2/1/19 – 8/1/19. Thirty-four received pip/tazo, 61 received other antibiotics. Average age was 75, and 70% of patients had an infectious diseases diagnosis on discharge. Fluid homeostasis was poorer in the pip/tazo group compared to the other antibiotics group, demonstrated by weight increase ≥ 1kg (42% vs. 38%) and/or increase in diuretic intensity (65% vs. 51%). 30-day readmission rate was 2.9% in the pip/tazo group and 4.9% in the other antibiotics group. Median LOS was 11.5 vs. 7 days for the pip/tazo group and other antibiotics group, respectively. Rate of mortality was 32.6% during this encounter.

Conclusion
Early initiation of fluids and antibiotics may be detrimental in those without an infectious syndrome based on disrupted fluid homeostasis. Given lower sodium burden associated with other antibiotic selections, this has implications for antimicrobial stewardship.

Disclosures
All Authors: No reported disclosures
197. Bridging the Divide Between Antimicrobial Stewardship and Surgical Services: Successful Use of Handshake Stewardship with Hepato-Pancreato-Biliary Surgical Services in Adult Patients at a Large Academic Medical Center
Authors: Meredith Jacqueline , Roshdy Danya , Jaffa Rupal K , Medaris Leigh A , Aviles Cesar , Cochran Allyson , Fischer Kristin , Shastry Vivek , Davidson Lisa 
Published: January 2021

Abstract

Background
Handshake stewardship has displayed promise in engaging providers in the pediatric population but literature in adults are lacking. Face-to-face interactions are proposed to improve antibiotic stewardship (ASP) efforts in challenging services that have low ASP acceptance and commonly utilize broad-spectrum antibiotics (BSA) such as Hepato-Pancreato-Biliary surgical services (HPBSS).

Methods
Handshake stewardship was initiated by the Antimicrobial Support Network (ASN) with the HPBSS at the Carolinas Medical Center in January 2019. In-person rounding was completed. Treatment algorithms were created to assist in standardizing antibiotic selection and de-escalation for common HPB infections. To evaluate the impact of handshake stewardship, we assessed antimicrobial utilization of BSA by measuring days of therapy (DOT) per 1000 patient days (PD), comparing the pre- (Jan – Dec 2018) and post-intervention period (Jan – Dec 2019). ASN intervention acceptance rates and rates of hospital-acquired (HA) carbapenem-resistant Enterobacterales (CRE) infections/colonization and C. difficile infections (CDI) were also collected.

Results
After implementation of handshake stewardship, antipseudomonal use decreased significantly by 32.5 DOT/1000 PD as compared to the pre-intervention period (174.4 vs 141.9 DOT/1000 PD, p = 0.04). A numeric decrease in carbapenem use was also observed (21.7 vs 57.5 DOT/1000 PD, p = 0.275). ASN intervention acceptance rates significantly increased by 31% (p &lt; 0.01). HA-CRE infections, CRE colonization and CDI decreased by 87.7%, 66% and 38.8%, respectively (p = ns).
Figure 1: HPB Antibiotic Utilization

FIgure 2: ASN Intervention Rates with HPB

Table 1. Rates of CRE and C. difficile Infections

Conclusion
Use of handshake stewardship assisted in reducing BSA use, improving provider acceptance of ASN interventions and decreasing HA-infection rates. Based on these findings, handshake stewardship may be useful in services that display challenges in implementing ASP due to their complex patient populations, such as HPBSS.

Disclosures
All Authors: No reported disclosures
201. Healthcare utilization outcomes of patients prescribed fluoroquinolones on discharge from the hospital to nursing homes
Authors: Lantz Tyler L , Noble Brie N , Crnich Christopher J , McGregor Jessina C , Chan Dominic , Furuno Jon P , Furuno Jon P , Bearden David T 
Published: January 2021

Abstract

Background
Fluoroquinolones (FQs) are frequently prescribed in nursing homes (NHs) despite concerns regarding broad spectrum antibiotic selective pressure, increased risk of Clostridioides difficile infection, and other adverse events. NH antibiotics are also frequently initiated in hospitals prior to NH admission. We quantified the frequency and outcomes of patients prescribed FQs on discharge from the hospital to NHs.

Methods
This was a retrospective cohort study of adult (age ≥ 18 years) inpatients prescribed a FQ on discharge from Oregon Health & Science University Hospital (OHSU) to a NH between 1/1/2016 and 12/31/2018. Study data were collected from a repository of electronic health record data. The outcome of interest was a composite of 30-day hospital readmission or emergency department (ED) visit to OHSU. Associations were quantified using odds ratios (ORs) and 95% confidence intervals (CIs).

Results
Among 9,546 patients discharged to a NH, 2,410 (25%) were prescribed at least one antibiotic and 423 (17.6%) were prescribed a FQ. Of these patients, 36.9% were age ≤ 65, 53% were male, 11.6% received a specialty infectious diseases consultation, 34.8% had a surgical diagnosis, and 49.7% had a hospital length of stay &gt; 7 days. The most prevalent comorbidities were cancer (30.5%), chronic obstructive pulmonary disease (29.6%), and renal disease (26%). The most prevalent FQs prescribed were ciprofloxacin (56.7%), levofloxacin (40.2%), and moxifloxacin (3.1%). Duration of NH therapy &gt; 7 days occurred in 37.6% of patients. The most common infectious diagnoses were bloodstream infection and endocarditis (39%), pneumonia (17%), and urinary tract infection (14.2%). Of patients prescribed a FQ, 276 (65.3%) had an ED visit or hospital admission to index facility within 30 days of discharge. Patients who were ≤ 65 years old (OR 2.3, 95% CI 1.4–3.5), male (OR 1.6, 95% CI 1.1–2.5), had comorbid renal disease (OR 1.8, 95% CI 1.1–2.9), or osteomyelitis as infectious diagnosis (OR 2.4, 95% CI 1.0–5.7) were more likely to have a 30-day ED visit or hospital admission.

Conclusion
Patients prescribed FQs on discharge to NHs frequently returned to the hospital for an ED visit or inpatient admission within 30 days of discharge.

Disclosures
All Authors: No reported disclosures
202. Implementation of an Outpatient Parenteral Antimicrobial Therapy (OPAT) Collaborative for Patients with Staphylococcus aureus or Gram-Negative Bacilli Bacteremia Requiring Home Infusion: The PANTHIR Program
Authors: Ross Jennifer K , Boeser Kimberly D , Simonson Dana , Hain Malia , Killelea Kristi , Galdys Alison 
Published: January 2021

Abstract

Background
Staphylococcus aureus (SA) and Gram-negative bacilli (GNB) bacteremia often require prolonged treatment courses due to high morbidity and mortality risk. Outpatient parenteral antibiotic therapy (OPAT) has emerged as a preferred delivery method. Few data have been published regarding the follow-up and adverse event rates among OPAT patients. We describe outcomes in patients with SA or GNB bacteremia transitioning from an academic medical center to home infusion, prompting the implementation of the Parenteral ANtimicrobial therapy Transitions to Home Infusion Review (PANTHIR) program.

Methods
A retrospective chart review of adult patients with SA or GNB bacteremia at the University of Minnesota Medical Center requiring home infusion represent a 26-month period. Baseline outcomes, including 30-day hospital readmissions and adverse drug events (ADEs), were calculated. The PANTHIR program was launched as an interdisciplinary collaborative with an infectious diseases (ID) provider, pharmacists, and home infusion specialists. Core program elements include inpatient identification, ID pharmacist review, care plan documentation and communication, and OPAT program measures.

Results
The retrospective cohort included 69 patients. 23.2% experienced a hospitalization within 30 days of discharge and 26.1% experienced an ADE (Table 1). The mean duration of therapy was 22 days. No patient received aminoglycosides and one required vancomycin. A primary goal was to improve the continuity of care for potentially life-threatening bacteremia during the vulnerable inpatient to outpatient transition. Electronic health record functionality allowed for creation of an OPAT navigator for infectious diseases (ID) pharmacist transition plan documentation, electronic communication with designated provider and home infusion pharmacist, and retrieval of focal data points for ongoing program evaluation. 28 patients have been enrolled in the PANTHIR program with outcomes data collection underway.
Table 1. Retrospective data among University of Minnesota Medical Center patients hospitalized with SA or GNB bacteremia requiring home infusion on discharge.

Conclusion
Hospital readmission rates and ADEs are frequent among patients with SA or GNB bacteremia requiring OPAT via home infusion. An ID pharmacist-directed program in collaboration with an ID provider is feasible for OPAT transitions and may serve as a roadmap for other institutions.

Disclosures
Dana Simonson, PharmD, BCPS, Janssen (Advisor or Review Panel member, Other Financial or Material Support, Webinar Series Speaker Fall 2019)
205. Rectal Stool Surveillance Cultures to Guide Empiric Antibiotic Therapy in Patients with Hematologic Malignancies with or without Hematopoietic Stem Cell Transplantation
Authors: Sait Afrah S , Patole Shalom S , Dzintars Kathryn , Cosgrove Sara E , Steinke Seema Mehta 
Published: January 2021

Abstract

Background
Patients with hematologic malignancies (HM) or hematopoietic stem cell transplant (HSCT) commonly receive broad-spectrum antimicrobials, often leading to the development of multidrug resistant organisms (MDRO). At our institution, rectal stool surveillance cultures (SSC) are done weekly on admitted adult patients with HMs or HSCT. The objective of this study is to determine the role of SSCs in predicting the development of a sterile site infection (StSI) with the same MDRO as identified in the SSC.

Methods
We retrospectively evaluated StSIs (blood, CSF, sputum/respiratory, pleural fluid, and urine) and SSC data from 242 adult patients admitted to the adult oncology ward at a large academic tertiary care center from 6/1/2017 to 2/28/2019. Demographics, SSC data, and StSIs in a 3-month period following the last SSC for each patient were collected from electronic medical records. SSCs were cultured on HardyCHROM ESBL™ media. MDRO similarity between SSC and StSI was determined by comparing susceptibility profiles. JMPÒ Pro 14.3.0 and RStudio were used for statistical analyses.

Results
Two hundred forty-two patients yielded 732 SSCs. We eliminated SSCs with incomplete (&lt; 3 months of follow up) data. Thus, 579 SSCs were included in the analyses. 64% of patients were male. Leukemias (55.4%), lymphomas (21.9%), and multiple myeloma (10.3%) were the most common HMs. HSCT recipients comprised 50.4%. SSCs were positive for a MDRO in 251 cases (vancomycin-resistant enterococci, 52.2%; extended-spectrum beta-lactamase (ESBL) producing organisms, 22.2%; and carbapenamase producing organisms, 4.4%). There were 54 StSIs documented where the MDRO was the same as the SSC MDRO. The NPV of the SSC was 95.1% (95%CI 0.93,0.97). The positive likelihood ratio of the SSC was 2.5 (95%CI 2.07,3.02).

Conclusion
Our results suggest that a negative SSC is associated with a lower probability of identifying a StSI with an MDRO. Clinically, this can be useful in providing the opportunity to judiciously guide antimicrobial therapy, thereby avoiding the unnecessary usage of broad-spectrum antimicrobials when no MDRO is identified in the SSC.

Disclosures
All Authors: No reported disclosures
206. The Utility of Lactate as a Biomarker for Sepsis in Cancer Patients
Authors: Mathew Suji , Whitman Leah 
Published: January 2021

Abstract

Background
Serum lactate is included in the initial assessment of patients with sepsis. However, cancer patients develop lactic acidosis for a variety of reasons and are underrepresented in most studies. Therefore, elevated lactate levels may lead to overdiagnosis of sepsis and excessive antibiotic use. The purpose of this study is to evaluate the utility of lactate as a biomarker for sepsis in cancer patients. The primary endpoint is the rate of 24-hour lactate clearance between infectious and non-infectious causes of lactic acidosis in cancer patients. Secondary objectives explore the duration of antibiotic therapy (DOT), the impact of liver metastasis on serum lactate levels, and the role of procalcitonin in distinguishing between infectious and non-infectious causes of lactic acidosis.

Methods
Retrospective chart review by Antimicrobial Stewardship team
Figure 1: Study design

Results
Preliminary data from a random subset of our sample (45/150) suggests there is no difference in mean serum lactate levels between infectious and non-infectious groups (4.6 vs 6.4). However, a substantial difference exists in the rate of 24h lactate clearance, although the difference was not statistically significant (58.3% vs 33%; p=0.13) (Fig2). There was a significant difference in antibiotic DOT (12.6 vs 3.3; p&lt; 0.0001) presumably due to robust antimicrobial stewardship practices. Consistent with previous studies, there was a significant difference in procalcitonin levels between groups (27.2 vs 1.5, p=0.04).
A sub-analysis of non-infectious patients with liver metastasis revealed a statistically significant difference in the rate of lactate clearance (21% vs 61.5%, p=0.03) (Fig3) suggesting that liver involvement impacts lactate clearance. Antibiotic DOT were also longer in non-infectious patients with liver metastasis (4.53 vs 1.38, p=0.02).
Comparing end points between cancer patients with and witthout infection.

Liver involvement affecting Lactate clearance in patients without infection.

Conclusion
Cancer patients often manifest SIRS criteria at baseline which may lead to the overdiagnosis of infection and excessive antibiotic usage. Our observation is that lactate clearance as opposed to degree of lactic acidosis may be a more accurate indicator of infection in cancer patients especially those with liver involvement. This information may mitigate unnecessary antibiotic use in cancer patients with persistent lactic acidosis unrelated to infection.

Disclosures
All Authors: No reported disclosures
213. An Analysis of the Impact of Gastrointestinal Polymerase Chain Reaction Panel Use on Antimicrobial use at a Tertiary Care Academic Medical Center
Authors: Nlandu Zola , Piccicacco Nicholas , Zeitler Kristen , Jariwala Ripal , Montero Jose 
Published: January 2021

Abstract

Background
Gastrointestinal Polymerase Chain Reaction (GI PCR) panels are increasingly utilized in place of conventional stool testing methods. Several studies have noted GI PCR testing is associated with a reduction in antibiotic prescribing. As it relates to the appropriate timing to order this test in hospitalized patients, one study showed decreased utility when ordered more than 72 hours into admission. At Tampa General Hospital, we utilize the BioFire® FilmArray® GI PCR panel. Since implementation in March 2015, its impact on antimicrobial use has not been formally assessed. Our aim was to evaluate the impact of the GI PCR panel and determine its usefulness as a potential tool for antimicrobial stewardship.

Methods
We conducted an IRB approved retrospective chart review in adult patients admitted to our institution who were ordered the GI PCR panel between 1/1/2018 and 12/31/19. Our primary objective was to assess antimicrobial prescribing patterns; secondary objectives included determining the quantity of tests ordered after 72 hours of admission and inpatient length of stay.

Results
Our initial chart review of 50 patients who were ordered the GI PCR panel revealed 60 % (n = 30) females with an overall median age of 55 years (interquartile range (IQR): 40.75,66.75). GI PCRs were ordered a median of 1 day into the hospital admission (IQR: 1,3) with 6 patients having a test ordered longer than 72 hours into their admission. The median length of stay was 5 days (IQR: 3,7). Testing was negative for 82 % of patients. For patients with positive tests, the most common pathogen identified was E coli (EPEC). Five out of 50 patients (10%) had antimicrobial therapy modified after GI PCR results. Internal medicine providers ordered the majority of tests in these patients (n = 26 (52 %)).

Conclusion
Our findings suggest the majority of GI PCRs were ordered within 72 hours of admission. However, changes in antimicrobial therapy were minimal. A limitation of our study includes patients who were on antimicrobials for other indications.

Disclosures
All Authors: No reported disclosures
214. Antibiotic Use for Common Infections in British Columbia: A Review of Outpatient Prescribing from 2000 - 2018
Authors: Saatchi Ariana , Patrick David M , Morris Andrew , Silverman Michael , Povitz Marcus , Shariff Salimah , Marra Fawziah 
Published: January 2021

Abstract

Background
Antimicrobial resistance continues to jeopardize the future of modern medicine; as 92% of all antibiotics are used in the community, it is imperative to parse outpatient prescribing. In British Columbia (BC), efforts to curb the use of these essential medications have included: stewardship campaigns, practitioner guidelines, and vaccine scheduling amendments. This study reviews the trends in antibiotic use over the past two decades to identify new targets for Provincial stewardship and intervention.

Methods
Antibiotic prescription information was extracted from PharmaNet, a centralized data system that links all pharmacies with prescriptions dispensed in the community setting. The Medical Service Plan records reimbursement claims submitted by physicians for services provided, including diagnostic codes. Antibiotic prescriptions were extracted from PharmaNet and then matched to the billing system using anonymized patient identifiers. Prescription rates were calculated, and trends were examined by major anatomical therapeutic chemical (ATC) classification.

Results
Our study included 3,564,258 individuals over an 18-year period, with a total of 26,108,576 antibiotic prescriptions issued, for common infections. Overall antibiotic utilization decreased 18% (from 228 to 187 prescriptions per 1000 population) over the course of the study period. This trend was reflected in both Beta-Lactam (-37%) and Macrolide (-50%) antibiotics; two of the most common classes prescribed in the outpatient setting. A significant outlier was the J01X class of Other Antibacterials, which increased by a staggering 218%, by 2018. Further analyses are currently underway to stratify these changes in magnitude by demographic variables to identify specific, new targets for stewardship.
Rates of outpatient antibiotic prescriptions, for common infections, per 1000 population, by major ATC class, over time.

Conclusion
Outpatient antibiotic prescribing has decreased steadily since 2000. These promising results can be ascribed to the various Provincial initiatives to quell the misuse of these medications. However, many of the indications tied to these prescriptions do not warrant the use of antibiotics, and further analyses are necessary to evaluate prescribing quality to fully delineate the state of antibiotic use in BC. Next steps also include comparing BC rates with Ontario, another large province of Canada.

Disclosures
All Authors: No reported disclosures
220. Comparing Antibiotic Prescription Practices, and Provider’s Perceptions of Such Rates, Among Urgent Care and Non-Urgent Care Clinicians at One of the Nation’s Largest Federally Qualified Health Centers
Authors: Ben-Yelles Ramzi W , Hopkins Brittany , Brown Sherrill , Saluja Sonali 
Published: January 2021

Abstract

Background
Inappropriate antibiotic prescribing practices, and the resulting development of antibiotic resistance, contribute to a growing health emergency worldwide. In reviewing data from 2010–2011, it was estimated that over 30% of ambulatory antibiotic prescriptions in the United States are non-essential.1 Altamed, one of the nation’s largest federally qualified health centers, operates 21 clinics across Southern California and serves the primary care needs of a high-volume, socioeconomically disadvantaged, predominantly Hispanic population.
Citation 1

Methods
We conducted an evaluation on the inappropriate antibiotic prescribing rate for Upper Respiratory Infections (URI) among all providers at Altamed (n=400). We limited our scope of encounters to cases of uncomplicated, acute bronchitis (URI) that occurred between January and December 2018. ICD 10 codes identified URIs, with exclusion criteria limiting confounding variables, charting errors, and dual diagnoses. Additionally, provider perceptions and mechanism for their antibiotic prescription practices were assessed with a de-identified 17 question, Likert-scale assessment (n=90).

Results
Of the encounters for URI seen by urgent care providers, 11.09% had inappropriate antibiotic prescriptions written. This is significantly different from encounters by non-urgent care providers, where 9.13% were deemed inappropriate (p=0.016). Despite this, providers were not uniform in believing their own antibiotic prescription rates to be as successful, with many estimating that their rate of CDC guideline concordance to fall below 90%. However, in their survey responses, providers as a whole report following healthy prescribing practices, identifying needs in their communities to recognize when it was inappropriate to prescribe an antibiotic, though they requested increased access to and education on antibiograms.

Graph 1

Table 1

Graph 2

Conclusion
Our study limitations included uneven or incomplete charting, the narrow time frame of the study, and the limited survey response rate of Altamed providers. Nevertheless, we are able to ascertain that inappropriate prescribing practices continue to be a challenge in the outpatient setting and are of greater concern among urgent care providers.

Disclosures
All Authors: No reported disclosures