scholarly journals Impact of the COVID-19 Pandemic on Antimicrobial Consumption and Hospital-Acquired Candidemia and Multidrug-Resistant Bloodstream Infections

Antibiotics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 816
Author(s):  
Ana Guisado-Gil ◽  
Carmen Infante-Domínguez ◽  
Germán Peñalva ◽  
Julia Praena ◽  
Cristina Roca ◽  
...  
Keyword(s):  
Antimicrobial Stewardship ◽  
Tertiary Care ◽  
Bloodstream Infections ◽  
Multidrug Resistant ◽  
Incidence Density ◽  
Antimicrobial Consumption ◽  
Global Trend ◽  
Long Term Impact ◽  
Hospital Acquired ◽  
The Impact

During the COVID-19 pandemic, the implementation of antimicrobial stewardship strategies has been recommended. This study aimed to assess the impact of the COVID-19 pandemic in a tertiary care Spanish hospital with an active ongoing antimicrobial stewardship programme (ASP). For a 20-week period, we weekly assessed antimicrobial consumption, incidence density, and crude death rate per 1000 occupied bed days of candidemia and multidrug-resistant (MDR) bacterial bloodstream infections (BSI). We conducted a segmented regression analysis of time series. Antimicrobial consumption increased +3.5% per week (p = 0.016) for six weeks after the national lockdown, followed by a sustained weekly reduction of −6.4% (p = 0.001). The global trend for the whole period was stable. The frequency of empirical treatment of patients with COVID-19 was 33.7%. No change in the global trend of incidence of hospital-acquired candidemia and MDR bacterial BSI was observed (+0.5% weekly; p = 0.816), nor differences in 14 and 30-day crude death rates (p = 0.653 and p = 0.732, respectively). Our work provides quantitative data about the pandemic effect on antimicrobial consumption and clinical outcomes in a centre with an active ongoing institutional and education-based ASP. However, assessing the long-term impact of the COVID-19 pandemic on antimicrobial resistance is required.

scholarly journals Long-Term Impact of an Educational Antimicrobial Stewardship Program on Management of Patients with Hematological Diseases

Antibiotics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 136
Author(s):  
Ana Belén Guisado-Gil ◽  
Manuela Aguilar-Guisado ◽  
Germán Peñalva ◽  
José Antonio Lepe ◽  
Ildefonso Espigado ◽  
...  
Keyword(s):  
Antimicrobial Stewardship ◽  
Bloodstream Infections ◽  
Interrupted Time Series ◽  
Multidrug Resistant ◽  
Relative Effect ◽  
Incidence Density ◽  
Antimicrobial Consumption ◽  
Interrupted Time Series Analysis ◽  
Stewardship Program

Antimicrobial stewardship programs (ASPs) in hematological patients are especially relevant. However, information about ASPs in this population is scarce. For 11 years, we quarterly assessed antimicrobial consumption and incidence and death rates of multidrug-resistant (MDR) bloodstream infections (BSI) in the hematology Department. Healthcare activity indicators were also monitored yearly. We performed an interrupted time-series analysis. Antimicrobials showed a sustained reduction with a relative effect of −62.3% (95% CI −84.5 to −40.1) nine years after the inception of the ASP, being especially relevant for antifungals (relative effect −80.4%, −90.9 to −69.9), quinolones (relative effect −85.0%, −102.0 to −68.1), and carbapenems (relative effect −68.8%, −126.0 to −10.6). Incidence density of MDR BSI remained low and stable (mean 1.10 vs. 0.82 episodes per 1000 occupied bed days for the pre-intervention and the ASP period, respectively) with a quarterly percentage of change of −0.3% (95% CI −2.0 to 1.4). Early and late mortality of MDR BSI presented a steady trend (quarterly percentage of change −0.7%, 95% CI −1.7 to 0.3 and −0.6%, 95% CI −1.5 to 0.3, respectively). Volume and complexity of healthcare activity increased over the years. The ASP effectively achieved long-term reductions in antimicrobial consumption and improvements in the prescription profile, without increasing the mortality of MDR BSI.

scholarly journals Long-Term Impact of an Educational Antimicrobial Stewardship Program on Hospital-Acquired Candidemia and Multidrug-Resistant Bloodstream Infections: A Quasi-Experimental Study of Interrupted Time-Series Analysis

2017 ◽  
Vol 65 (12) ◽  
pp. 1992-1999 ◽  
Author(s):  
José Molina ◽  
Germán Peñalva ◽  
María V Gil-Navarro ◽  
Julia Praena ◽  
José A Lepe ◽  
...  
Keyword(s):  
Bloodstream Infections ◽  
Interrupted Time Series ◽  
Antibiotic Consumption ◽  
Multidrug Resistant ◽  
Incidence Density ◽  
Antimicrobial Stewardship Program ◽  
Interrupted Time Series Analysis ◽  
Stewardship Program ◽  
Quasi Experimental ◽  
Hospital Acquired

Abstract Background The global crisis of bacterial resistance urges the scientific community to implement intervention programs in healthcare facilities to promote an appropriate use of antibiotics. However, the clinical benefits or the impact on resistance of these interventions has not been definitively proved. Methods We designed a quasi-experimental intervention study with an interrupted time-series analysis. A multidisciplinary team conducted a multifaceted educational intervention in our tertiary-care hospital over a 5-year period. The main activity of the program consisted of peer-to-peer educational interviews between counselors and prescribers from all departments to reinforce the principles of the proper use of antibiotics. We assessed antibiotic consumption, incidence density of Candida and multidrug-resistant (MDR) bacteria bloodstream infections (BSIs) and their crude death rate per 1000 occupied bed days (OBDs). Results A quick and intense reduction in antibiotic consumption occurred 6 months after the implementation of the intervention (change in level, −216.8 defined daily doses per 1000 OBDs; 95% confidence interval, −347.5 to −86.1), and was sustained during subsequent years (average reduction, −19,9%). In addition, the increasing trend observed in the preintervention period for the incidence density of candidemia and MDR BSI (+0.018 cases per 1000 OBDs per quarter; 95% confidence interval, −.003 to .039) reverted toward a decreasing trend of −0.130 per quarter (change in slope, −0.029; −.051 to −.008), and so did the mortality rate (change in slope, −0.015; −.021 to −.008). Conclusions This education-based antimicrobial stewardship program was effective in decreasing the incidence and mortality rate of hospital-acquired candidemia and MDR BSI through sustained reduction in antibiotic use.

scholarly journals Trends of Multidrug-Resistant Pathogens, Difficult to Treat Bloodstream Infections, and Antimicrobial Consumption at a Tertiary Care Center in Lebanon from 2015–2020: COVID-19 Aftermath

Antibiotics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1016
Author(s):  
Amanda Chamieh ◽  
Rita Zgheib ◽  
Sabah El-Sawalhi ◽  
Laure Yammine ◽  
Gerard El-Hajj ◽  
...  
Keyword(s):  
Medical Center ◽  
Care Center ◽  
Tertiary Care ◽  
Bloodstream Infections ◽  
Multidrug Resistant ◽  
Infection Prevention And Control ◽  
P Value ◽  
Tertiary Care Center ◽  
Antimicrobial Consumption ◽  
Dynamic Collaboration

Introduction: We studied the trend of antimicrobial resistance and consumption at Saint George Hospital University Medical Center (SGHUMC), a tertiary care center in Beirut, Lebanon, with a focus on the SARS-CoV-2 pandemic. Materials and Methods: We calculated the isolation density/1000 patient-days (PD) of the most isolated organisms from 1 January 2015–31 December 2020 that included: E. coli (Eco), K. pneumoniae (Kp), P. aeruginosa (Pae), A. baumannii (Ab), S. aureus (Sau), and E. faecium (Efm). We considered March–December 2020 a surrogate of COVID-19. We considered one culture/patient for each antimicrobial susceptibility and excluded Staphylococcus epidermidis, Staphylococcus coagulase-negative, and Corynebacterium species. We analyzed the trends of the overall isolates, the antimicrobial susceptibilities of blood isolates (BSI), difficult-to-treat (DTR) BSI, carbapenem-resistant Enterobacteriaceae (CRE) BSI, and restricted antimicrobial consumption as daily-defined-dose/1000 PD. DTR implies resistance to carbapenems, beta-lactams, fluoroquinolones, and additional antimicrobials where applicable. Results and Discussion: After applying exclusion criteria, we analyzed 1614 blood cultures out of 8314 cultures. We isolated 85 species, most commonly Eco, at 52%. The isolation density of total BSI in 2020 decreased by 16%: 82 patients were spared from bacteremia, with 13 being DTR. The isolation density of CRE BSI/1000 PD decreased by 64% from 2019 to 2020, while VREfm BSI decreased by 34%. There was a significant decrease of 80% in Ab isolates (p-value < 0.0001). During COVID-19, restricted antimicrobial consumption decreased to 175 DDD/1000 PD (p-value < 0.0001). Total carbapenem consumption persistently decreased by 71.2% from 108DDD/1000 PD in 2015–2019 to 31 DDD/1000 PD in 2020. At SGHUMC, existing epidemics were not worsened by the pandemic. We attribute this to our unique and dynamic collaboration of antimicrobial stewardship, infection prevention and control, and infectious disease consultation.

scholarly journals Point Prevalence Surveys and Customized Interventions Are Good Strategies to Improve Antimicrobial Use: The Brazilian Experience

2020 ◽  
Vol 41 (S1) ◽  
pp. s523-s523
Author(s):  
Ana Paula Matos Porto ◽  
Icaro Boszczowski ◽  
Ann Versporten ◽  
Ines Pauwels ◽  
Thais THAIS ◽  
...  
Keyword(s):  
Tertiary Care ◽  
Data Entry ◽  
Abdominal Sepsis ◽  
Multidrug Resistant ◽  
Point Prevalence ◽  
Antimicrobial Use ◽  
Antimicrobial Consumption ◽  
Prevalence Survey ◽  
Prescription Practices ◽  
The Impact

Background: Although antimicrobial stewardship is recommended by Brazilian government, data regarding prescription practices in the country are scarce. Objective: To describe the impact of 2 point-prevalence surveys and customized interventions on antimicrobial consumption among 8 hospitals in 3 regions of Brazil. Method: In 2017 and 2018, 8 tertiary-care Brazilian hospitals conducted the Global Point Prevalence Survey of Antimicrobial Consumption and Resistance (Global-PPS). All enrolled hospitals were provided the 2017 results. The group discussed intervention strategies by WhatsApp and e-mail. Hospitals customized interventions, including feedback to prescribers, discussion with pharmacists, and antimicrobial use data in accreditation process. A web-based program was used for data entry, validation, and reporting of details on AMC prescriptions. The Global-PPS was developed by the University of Antwerp and was funded by bioMérieux. The 1-day prevalences in 2017 and 2018 are presented as risk ratios. The main outcomes are whole antimicrobial use in hospitals and intensive care units (ICUs). Prevalence of infections caused by multidrug-resistant organisms (MDROs) were reported. Results: Overall, 1,716 patients were evaluated, of whom 420 (52.5%) and 429 (46.8%) were using antimicrobials in 2017 and 2018, respectively (P = .02). In 33 ICUs, 170 patients (61.4%) and 204 patients (56.8%) were on antimicrobials, in 2017 and 2018, respectively (P = .20). Significant decreases of overall use were observed for vancomycin (from 11% to 7%; P =.01), meropenem (from 12% to 9%; P = .04), and linezolid (from 1.5% to 0.33%; P =.01). There was no significant increase in any singular drug or class of drugs. Within ICUs, vancomycin use decreased significantly (from 19% to 11%; P = .005), linezolid use decreased significantly (from 2.9% to 0.3%; P = .01), colistin use decreased significantly (from 4.3% to 1.7%; P = .05), and metronidazole use decreased significantly (from 6.5% to 2.8%; P = .03). We observed a nonsignificant decrease of infections caused by MDROs across the whole hospital (from 8.7% to 6.6%; P = .10) and in the ICUs (from 15.2% to 12.3%; P = .30). The most frequent infectious diagnoses were pneumonia (27%), intra-abdominal sepsis (14%), skin and soft-tissue infection (SSTI) (9.4%), urinary tract infection (9.1%), and sepsis and septic shock with no identified focus (SSNIF) (7.4%). There was a significant increase in SST (from 7.6% to 11.4%; P = .03) and a decrease in SSNIF (from 10.7% to 4.1%; P = .00002). In 2018, there were significantly fewer antimicrobial prescriptions for healthcare-acquired infections (from 52.6% to 43.6%; P = .0007) and more antimicrobial prescriptions for community-acquired infections (from 27.4% to 34.6%; P = .003). We detected no difference for medical or surgical prophylaxis. Conclusions: Feedback of prescription practices might have had an impact on local policies of antimicrobial use, as demonstrated by an overall decrease is antimicrobial use and a decrease in the ICU.Funding: This study was supported by Biomérieux.Disclosures: None

scholarly journals Hospital-Acquired Bloodstream Infections With MRSA and VRE: Standardized Admission Screening Did Not Impact Rates

2020 ◽  
Vol 41 (S1) ◽  
pp. s253-s254
Author(s):  
Jennifer Ellison ◽  
Blanda Chow ◽  
Andrea Howatt ◽  
Ted Pfister ◽  
Kathryn Bush
Keyword(s):  
Tertiary Care ◽  
Bloodstream Infections ◽  
Cost Of Care ◽  
Early Initiation ◽  
Solid Organ ◽  
Screening Practices ◽  
Contact Precautions ◽  
Admission Screening ◽  
Hospital Acquired ◽  
Standardized Screening

Background: Bloodstream infections (BSIs) are an important cause of morbidity and mortality in severely ill patients, contributing to increased length of stay and a higher cost of care. Surveillance of hospital-acquired (HA) BSI is considered a measure of quality of care and has been performed provincially in Alberta since 2011. Prior to October 2015, a nonstandardized, risk-factor–based VRE screening process was used. Screening practices for antibiotic-resistant organisms (AROs) were aligned in October 2015 with a provincially standardized admission screening tool to allow for early initiation of contact precautions for patients colonized or infected with MRSA or VRE. In this data review, we sought to determine whether this admission screening change influenced ARO infections through review of HA-BSI rates. Methods: Prospectively, we reviewed reports of all patients admitted to Alberta Health Services/Covenant Health acute-care and acute-/tertiary-care rehabilitation facilities who met inclusion criteria: (1) positive blood culture identified with MRSA or VRE; (2) new episode for the patient; and (3) positive result occurred on or after calendar day 3 of admission. Data are presented as quarterly rates. Screening practices for MRSA and VRE were standardized provincially in October 2015 to include screening for MRSA on admission for patients who had an inpatient admission, received hemodialysis, or was an inmate in a correctional facility in the past 6 months. We also screened for VRE patients admitted to a solid-organ transplant unit or a hematology unit, regardless of risk factors. Results: We detected no changes in the quarterly rates of HA-BSI with MRSA or VRE after admission screening was standardized. Prior to standardized screening, MRSA BSI rates ranged from 0.12 to 0.25 per 10,000 patient days, with an overall rate of 0.18 per 10,000 patient days. After standardization, rates ranged from 0.09 to 0.30 per 10,000 patient days, with an overall rate of 0.17 per 10,000 patient days (P = .46). VRE BSI rates prior to standardization ranged from 0.03 to 0.13 per 10,000 patient days, with an overall rate of 0.08 per 10,000 patient days, which increased slightly to 0.09 per 10,000 patient days after standardized screening, ranging between 0.04 and 0.16 per 10,000 patient days (P = .61). Conclusions: Following the implementation of standardized admission screening and the early initiation of contact precautions, no significant changes were observed in rates of either HA-BSI with MRSA or VRE. Further investigation is required to identify the most effective strategies to reduce HA-BSIs caused by MRSA and VRE.Funding: NoneDisclosures: None

scholarly journals Implementation of a Rapid Phenotypic Susceptibility Platform for Gram-Negative Bloodstream Infections With Paired Antimicrobial Stewardship Intervention: Is the Juice Worth the Squeeze?

2021 ◽  
Author(s):  
Evan D Robinson ◽  
Allison M Stilwell ◽  
April E Attai ◽  
Lindsay E Donohue ◽  
Megan D Shah ◽  
...  
Keyword(s):  
Median Time ◽  
Antimicrobial Stewardship ◽  
A Priori ◽  
Bloodstream Infections ◽  
Standard Of Care ◽  
Post Intervention ◽  
Gram Negative ◽  
Stewardship Program ◽  
Days Of Therapy ◽  
The Impact

Abstract Background Implementation of the Accelerate PhenoTM Gram-negative platform (RDT) paired with antimicrobial stewardship program (ASP) intervention projects to improve time to institutional-preferred antimicrobial therapy (IPT) for Gram-negative bacilli (GNB) bloodstream infections (BSIs). However, few data describe the impact of discrepant RDT results from standard of care (SOC) methods on antimicrobial prescribing. Methods A single-center, pre-/post-intervention study of consecutive, nonduplicate blood cultures for adult inpatients with GNB BSI following combined RDT + ASP intervention was performed. The primary outcome was time to IPT. An a priori definition of IPT was utilized to limit bias and to allow for an assessment of the impact of discrepant RDT results with the SOC reference standard. Results Five hundred fourteen patients (PRE 264; POST 250) were included. Median time to antimicrobial susceptibility testing (AST) results decreased 29.4 hours (P &lt; .001) post-intervention, and median time to IPT was reduced by 21.2 hours (P &lt; .001). Utilization (days of therapy [DOTs]/1000 days present) of broad-spectrum agents decreased (PRE 655.2 vs POST 585.8; P = .043) and narrow-spectrum beta-lactams increased (69.1 vs 141.7; P &lt; .001). Discrepant results occurred in 69/250 (28%) post-intervention episodes, resulting in incorrect ASP recommendations in 10/69 (14%). No differences in clinical outcomes were observed. Conclusions While implementation of a phenotypic RDT + ASP can improve time to IPT, close coordination with Clinical Microbiology and continued ASP follow up are needed to optimize therapy. Although uncommon, the potential for erroneous ASP recommendations to de-escalate to inactive therapy following RDT results warrants further investigation.

scholarly journals Effect of Removing Contact Precautions for Multidrug-Resistant Organisms on Hospital Infections in a Pediatric Health System

2020 ◽  
Vol 41 (S1) ◽  
pp. s199-s200
Author(s):  
Matthew Linam ◽  
Dorian Hoskins ◽  
Preeti Jaggi ◽  
Mark Gonzalez ◽  
Renee Watson ◽  
...  
Keyword(s):  
Hand Hygiene ◽  
Antibiotic Stewardship ◽  
Infection Prevention ◽  
Tertiary Care ◽  
Bloodstream Infections ◽  
Central Line ◽  
Contact Precautions ◽  
Stewardship Program ◽  
Tract Infections ◽  
The Impact

Background: Discontinuation of contact precautions for methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococci (VRE) have failed to show an increase in associated transmission or infections in adult healthcare settings. Pediatric experience is limited. Objective: We evaluated the impact of discontinuing contact precautions for MRSA, VRE, and extended-spectrum β-lactamase–producing gram-negative bacilli (ESBLs) on device-associated healthcare-associated infections (HAIs). Methods: In October 2018, contact precautions were discontinued for children with MRSA, VRE, and ESBLs in a large, tertiary-care pediatric healthcare system comprising 2 hospitals and 620 beds. Coincident interventions that potentially reduced HAIs included blood culture diagnostic stewardship (June 2018), a hand hygiene education initiative (July 2018), a handshake antibiotic stewardship program (December 2018) and multidisciplinary infection prevention rounding in the intensive care units (November 2018). Compliance with hand hygiene and HAI prevention bundles were monitored. Device-associated HAIs were identified using standard definitions. Annotated run charts were used to track the impact of interventions on changes in device-associated HAIs over time. Results: Average hand hygiene compliance was 91%. Compliance with HAI prevention bundles was 81% for ventilator-associated pneumonias, 90% for catheter-associated urinary tract infections, and 97% for central-line–associated bloodstream infections. Overall, device-associated HAIs decreased from 6.04 per 10,000 patient days to 3.25 per 10,000 patient days after October 2018 (Fig. 1). Prior to October 2018, MRSA, VRE and ESBLs accounted for 10% of device-associated HAIs. This rate decreased to 5% after October 2018. The decrease in HAIs was likely related to interventions such as infection prevention rounds and handshake stewardship. Conclusions: Discontinuation of contact precautions for children with MRSA, VRE, and ESBLs were not associated with increased device-associated HAIs, and such discontinuation is likely safe in the setting of robust infection prevention and antibiotic stewardship programs.Funding: NoneDisclosures: None

scholarly journals Impact of COVID-19 pandemic on non-COVID patient’s management in urology: a public hospital experience in Mumbai

2021 ◽  
Vol 27 (1) ◽  
Author(s):  
Nikhilesh A. Jibhakate ◽  
Sujata K. Patwardhan ◽  
Ajit S. Sawant ◽  
Hemant R. Pathak ◽  
Bhushan P. Patil ◽  
...  
Keyword(s):  
Tertiary Care ◽  
Stone Disease ◽  
Outpatient Clinics ◽  
Percentage Decrease ◽  
Emergency Procedures ◽  
Number Of Patients ◽  
Long Term Impact ◽  
Tertiary Care Hospitals ◽  
The Impact ◽  
Near Future

Abstract Background To evaluate the impact of COVID-19 lockdown on non-COVID urological patient’s management in tertiary care urology centres. Methods This is an observational study in which data of patients visiting the urology department of all the MCGM run tertiary care hospitals were recorded for the duration of 1 April 2020 to 31 July 2020 and were compared to data of pre-COVID-19 period of similar duration. Results There was a decrease of 93.86% in indoor admissions of urology patients during the COVID-19 lockdown. Indoor admissions for stone disease, haematuria, malignancy accounted for 53.65%, 15.85%, 9.75%, respectively. Elective surgeries had the highest percentage decrease followed by emergency and semi-emergency procedures. There was a reduction of more than 80% in patients attending outpatient clinics. Stone disease and its consequences were the main reasons for visiting outdoor clinics (39%). A substantial number of patients presented with flank and abdominal pain (14.8%) and benign enlargement of the prostate (10.23%). Malignancy accounted for a very small number of patients visiting outdoor clinics (1.58%). Conclusions COVID-19 pandemic has a profound impact on patient care and education in Urology. There was more than ninety percent reduction in indoor admissions, operative procedures, and outpatient clinics attendance. Once the pandemic is controlled, there will be a large number of patients seeking consultation and management for urological conditions and we should be prepared for it. Surgical training of urology residents needs to be compensated in near future. Long-term impact on urological patient outcome remains to be defined.

THE IMPACT OF ANTIMICROBIAL STEWARDSHIP ON THE PATTERNS OF ANTIBIOTICS’ PRESCRIPTION AND CLINICAL OUTCOMES IN THE MEDICAL WARD OF A MALAYSIAN TERTIARY CARE HOSPITAL

2021 ◽  
pp. 20-25
Author(s):  
OVAIS ULLAH SHIRAZI ◽  
NORNY SYAFINAZ AB RAHMAN ◽  
CHE SURAYA ZIN ◽  
HANNAH MD MAHIR ◽  
SYAMHANIN ADNAN
Keyword(s):  
Length Of Stay ◽  
Clinical Outcomes ◽  
Antimicrobial Stewardship ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Medical Ward ◽  
Prescribing Patterns ◽  
Care Hospital ◽  
Slope Change ◽  
The Impact

Objective: To evaluate the impact of antimicrobial stewardship (AMS) on antibiotic prescribing patterns and certain clinical outcomes, the length of stay (LOS) and the re-admission rate (RR) of the patients treated within the medical ward of a tertiary care hospital in Malaysia. Methods: This quasi-experimental study was conducted retrospectively. The prescriptions of the AMS included alert antibiotics (AA) such as cefepime, ceftazidime, colistin (polymyxin E), imipenem-cilastatin, meropenem, piperacillin-tazobactam and vancomycin were reviewed for the period of 24 mo before (May, 2012–April, 2014) and after (May, 2014–April, 2016) the AMS implementation for the patients who were treated within the medical ward of a Malaysian tertiary care hospital. Patterns of antibiotics prescribed were determined descriptively. The impact of the AMS on the length of stay (LOS) and readmission rate (RR) was determined by the interrupted time series (ITS) comparative analysis of the pre-and post-AMS segments segregated by the point of onset (May, 2014) of the AMS program. Data analysis was performed through autoregressive integrated moving average (ARIMA) Winter Additive model and the Games-Howell non-parametric post hoc test by using IBM Statistical Package for Social Sciences version 25.0 for Windows (SPSS Inc., Chicago, IL, USA). Results: A total of 1716 prescriptions of the AA included for the AMS program showed that cefepime (623, 36.3%) and piperacillin-tazobactam (424, 24.7%) were the most prescribed antibiotics from May 2012 to April 2016. A 23.6% drop in the number of the AA prescriptions was observed during the 24-month post-AMS period. The LOS of the patients using any of the AA showed a post-AMS decline by 3.5 d. The patients’ LOS showed an average reduction of 0.12 (95% CI, 0.05–0.19, P=0.001) with the level and slope change of 0.18 (95% CI, 0.04–0.32, P=0.02) and 0.074 (95% CI, 0.02–0.12, P=0.002), respectively. Similarly, the percent RR reduced from 20.0 to 9.85 during the 24-month post-AMS period. The observed post-AMS mean monthly reduction of the RR for the patients using any AA was 0.38 (95% CI, 0.23–0.53, P<0.001) with the level and slope change of 0.33 (95% CI, 0.14–0.51, P=0.02) and 0.37 (95% CI, 0.16–0.58, P=0.001), respectively. Conclusion: The AMS program of a Malaysian tertiary care hospital was a coordinated set of interventions implemented by the AMS team of the hospital that comprised of the infectious diseases (ID) physician, clinical pharmacists and microbiologist. The successful implementation of the AMS program from May, 2014 to April, 2016 within the medical ward resulted in the drop of the number of AA prescriptions that sequentially resulted in the significant (P<0.05) post-AMS reduction of the LOS and the RR.

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