Estimating hospital costs of catheter-associated urinary tract infection

Medicated Foley Catheters Do Not Prevent Catheter-Associated Urinary Tract Infection: A Systematic Review of Randomized Controlled Trials

Infections of the urinary tract are among some of the most common infections treated in clinical practice. Numerous risk factors play an intrinsic role in the development of such infections, namely: age, sexual intercourse, prolonged use of feminine hygiene products, instrumentation, pregnancy, sexually transmitted infections, obstructive uropathy such as prostatic enlargement or urethral strictures, compromised immunity, and constipation. A major cause of urinary tract infections (UTIs) in hospitalized patients is catheter-associated urinary tract infections (CAUTIs). This systematic review aims to identify the causative agents and risk factors and to determine whether nitrofurazone, silver alloy, or zinc oxide-impregnated or coated/medicated Foley catheters, or non-medicated (standard) Foley catheters, can reduce the incidence of CAUTIs. A systematic review was conducted on the following databases: PubMed, Cochrane Central Register of Controlled Trials (CENTRAL), Trip medical database, and Google Scholar. A combination of keywords and Boolean operators was used ((((urinary tract infections) OR (urinary catheterization)) OR (prevention AND control)) ) AND (catheter-associated infections) for data extraction. All the randomized controlled clinical trials (RCTs) completed and available between January 1, 2005, and June 30, 2024, which focused on the prevention of CAUTIs, were screened thoroughly and were included in this systematic review. The Cochrane risk-of-bias tool for randomized trials (RoB 2) tool was used for risk of bias assessment. The Robvis visualization tool (McGuinness, LA, Higgins, JPT. Risk-of-bias VISualization (robvis): An R package and Shiny web app for visualizing risk-of-bias assessments. Res Syn Meth. 2020; 1-7) was used for development of traffic light plots and weighted bar plots for risk of bias. The literature search conducted produced 41,909 articles. Among these 19,076 were noted as duplicates and were excluded in the initial analysis; 22,833 manuscripts were thus screened after deduplication. Abstracts, case studies, reports, editorials, viewpoints, cross-sectional studies, cohort studies, case-control studies, case series, and letters to the editor/correspondence manuscripts (n = 22,745) were additionally excluded. A total of 88 full-text articles were assessed for eligibility. An in-depth evaluation and analysis further excluded 82 articles from the analysis quality assessment based on inclusion and exclusion criteria. Six RCTs were finally assessed regarding the prevention of CAUTIs and were ultimately included in the systematic review. The primary causative agents involved in the CAUTIs were found to be mainly Gram-negative bacteria such as Escherichia coli, Pseudomonas aeruginosa, and Enterococcus faecalis. The risk factors noted for the development of these CAUTIs ranged from urethral trauma, overdistention of the bladder, prolonged catheterization, to improper handling of the urine bag. No significant advantage was noted between the use of medicated and non-medicated standard Foley catheters. The aseptic technique and indications followed for the catheterization play a vital role in the prevention of CAUTIs, and more cognizance thereof will aid in the reduction of the development of CAUTIs.

Reducing urinary tract infection rates in post-operative surgical patients: A quality improvement intervention

INTRODUCTION AND OBJECTIVES

The Scarborough Health Network joined the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) in fiscal year 2017-2018 with interest in tracking surgical outcomes in General and Vascular Surgery patients. Results of the ACS NSQIP program revealed poor outcomes in 30-day urinary tract infection (UTI) rates in this population group. Results were in the lowest quartile compared to peer hospitals. To improve patient care, SHN initiated a multi-pronged quality improvement plan (QIP).

METHODS

The QIP focused on several improvements: (1) clarify the current state and conduct a root cause analysis, (2) determine a plan to encourage early removal of catheters in post-surgical patients, (3) enhance team communication in the pre-operative, operative and post-operative care environments, and (4) improve education around UTI prevention and treatment.

RESULTS

This study demonstrates the success of the quality improvement plan to improve a peri-operative complication in surgical patients. By 2019, SHN saw a significant decrease in UTI rates, and became a top decile performer in ACS NSQIP.

CONCLUSIONS

This study demonstrates the feasibility and success of implementing a quality improvement project, and its methods can be adapted at other hospital sites to improve patient care.

Catheter-associated urinary tract infections: Etiological analysis, biofilm formation, antibiotic resistance, and a novel therapeutic era of phage

Urinary tract infection (UTI) caused by uropathogens has put global public health at its utmost risk, especially in developing countries where people are unaware of personal hygiene and proper medication. In general, the infection frequently occurs in the urethra, bladder, and kidney, as reported by the physician. Moreover, many UTI patients whose acquired disorder from the hospital or health-care center has been addressed previously have been referred to as catheter-associated UTI (CAUTI). Meanwhile, the bacterial biofilm triggering UTI is another critical issue, mostly by catheter insertion. In most cases, the biofilm inhibits the action of antibiotics against the UTI-causing bacteria. Therefore, new therapeutic tools should be implemented to eliminate the widespread multidrug resistance (MDR) UTI-causing bacteria. Based on the facts, the present review emphasized the current status of CAUTI, its causative agent, clinical manifestation, and treatment complications. This review also delineated a model of phage therapy as a new therapeutic means against bacterial biofilm-originated UTI. The model illustrated the entire mechanism of destroying the extracellular plyometric substances of UTI-causing bacteria with several enzymatic actions produced by phage particles. This review will provide a complete outline of CAUTI for the general reader and create a positive vibe for the researchers to sort out alternative remedies against the CAUTI-causing MDR microbial agents.

Antimicrobial Resistance and Predisposing Factors Associated with Catheter-Associated UTI Caused by Uropathogens Exhibiting Multidrug-Resistant Patterns: A 3-Year Retrospective Study at a Tertiary Hospital in Mogadishu, Somalia

Background: Widespread and rapidly emerging multidrug-resistant uropathogens, particularly carbapenem-resistant pathogens, are a public health concern that impairs the determination of empirical therapy. This study aims to evaluate the antimicrobial susceptibility profile and factors associated with catheter-associated urinary tract infection (CA-UTI). Method: This retrospective study was carried out on a total of 779 urine cultures over a 3-year period. Antimicrobial sensitivity tests were performed using the standard Kirby−Bauer disk diffusion method. Results: The prevalence of CA-UTI in our study was 12.7%; a total of 47% of cultures had multi-drug-resistant (MDR) uropathogens, and 13% of the cultures showed extended-spectrum beta-lactamase (ESBL)-producing pathogens. Elderly patients, intensive care unit admissions, and associated comorbidities were correlated with higher rates of CA-UTI caused by multidrug-resistant uropathogens (p < 0.021, 95% CI: 0.893−2.010), (p < 0.008, 95% CI: 1.124−5.600), (p < 0.006, 95% CI: 0.953−2.617). Latex catheters and prolonged catheterization time were associated with increased risk of CA-UTI (p < 0.0001, 95% CI: 0.743−1.929, p = 0.012, 95% CI: 0.644−4.195). Patients with MDR uropathogens had prolonged hospital stays, i.e., 49% in more than 2 weeks (p < 0.04, 95% CI: 0.117−3.084). E. coli was the most common pathogen (26.3%), followed by Acinetobacter baumannii (24.3%). Acinetobacter baumannii showed the highest MDR pattern (88.5%), followed by Pseudomonas aeruginosa (68%). Acinetobacter baumannii and Klebsiella pneumoniae were associated with prolonged hospital stays (>2 w at 73.1 and 69%, respectively). Higher antimicrobial resistance against ceftriaxone (85.7%), meropenem (54.3%), ertapenem (50%), ciprofloxacin (58.5%), amikacin (27%), tigecycline (7.6%), and colistin (4.6%), was revealed in the study. Conclusion: Aside from the higher antimicrobial resistance against cephalosporins and fluoroquinolones, the findings of this study revealed that carbapenems are facing increased rates of antimicrobial resistance and are associated with substantial morbidity, prolonged hospitalization times, and increased healthcare expenses.

Administration of indwelling urinary catheters in four Australian Hospitals: cost-effectiveness analysis of a multifaceted nurse-led intervention

BACKGROUND

Urinary catheters are useful among hospital patients for allowing urinary flows and preparing patients for surgery. However, urinary infections associated with catheters cause significant patient discomfort and burden hospital resources. A nurse led intervention aiming to reduce inpatient catheterisation rates was recently trialled among adult overnight patients in four New South Wales hospitals. It included: 'train-the trainer' workshops, site champions, compliance audits and promotional materials. This study is the 'in-trial' cost-effectiveness analysis, conducted from the perspective of the New South Wales Ministry of Health.

METHODS

The primary outcome variable was catheterisation rates. Catheterisation and procedure/treatment data were collected in three point prevalence patient surveys: pre-intervention (n = 1630), 4-months (n = 1677), and 9-months post-intervention (n = 1551). Intervention costs were based on trial records while labour costs were gathered from wage awards. Incremental cost effectiveness ratios were calculated for 4- and 9-months post-intervention and tested with non-parametric bootstrapping. Sensitivity scenarios recalculated results after adjusting costs and parameters.

RESULTS

The trial found reductions in catheterisations across the four hospitals between preintervention (12.0 % (10.4 - 13.5 %), n = 195) and the 4- (9.9 % (8.5 - 11.3 %), n = 166 ) and 9- months (10.2 % (8.7 - 11.7 %) n = 158) post-intervention points. The trend was statistically non-significant (p = 0.1). Only one diagnosed CAUTI case was observed across the surveys. However, statistically and clinically significant decreases in catheterisation rates occurred for medical and critical care wards, and among female patients and short-term catheterisations. Incremental cost effectiveness ratios at 4-months and 9-months post-intervention were $188 and $264. Bootstrapping found reductions in catheterisations at positive costs over at least 72 % of iterations. Sensitivity scenarios showed that cost effectiveness was most responsive to changes in catheterisation rates.

CONCLUSIONS

Analysis showed that the association between the intervention and changes in catheterisation rates was not statistically significant. However, the intervention resulted in statistically significant reductions for subgroups including among short-term catheterisations and female patients. Cost-effectiveness analysis showed that reductions in catheterisations were most likely achieved at positive cost.

TRIAL REGISTRATION

Registered with the Australian New Zealand Clinical Trials Registry (ACTRN12617000090314). First hospital enrolment, 15/11/2016; last hospital enrolment, 8/12/2016.

Examining instruments used to measure knowledge of catheter-associated urinary tract infection prevention in health care workers: A systematic review

BACKGROUND

Catheter-associated urinary tract infection (CAUTI) is the most frequently occurring health care-associated infection among hospitalized patients. Adequate knowledge of CAUTI in health care workers supports effective prevention and control of the infection. This systematic review assesses instruments used to assess knowledge of CAUTI prevention in health care workers to inform future research. The catheter lifecycle model was used to evaluate the conceptual framework upon which the measurement instruments were based. Finally, the psychometric quality of these instruments was evaluated.

METHODS

Five electronic databases were searched for published studies and instruments. The COnsensus-based Standards for the selection of health status Measurement INstruments checklist was used to assess the psychometric quality reporting of the instruments.

RESULTS

Fifteen studies met the review inclusion criteria and 13 instruments were available for review. Most of the instruments did not address all knowledge components essential for CAUTI prevention as defined by the catheter lifecycle model. The psychometric quality of the instruments was not sufficiently evaluated.

CONCLUSIONS

Few instruments are available for CAUTI prevention knowledge measurement. The instruments were not closely aligned with the catheter lifecycle model as a framework. If CAUTI knowledge cannot be measured accurately using an effective instrument, this has the potential to impact negatively on clinical care and the focus of interventions. There is a need for a standardized instrument for the evaluation of CAUTI prevention knowledge so that targeted interventions can address knowledge deficits.

Venous access-site closure with vascular closure device vs. manual compression in patients undergoing catheter ablation or left atrial appendage occlusion under uninterrupted anticoagulation: a multicentre experience on efficacy and complications

AIMS

Manual compression (MC), widely used to achieve venous access haemostasis, needs prolonged immobilization and extended time-to-haemostasis. Vascular closure devices (VCD) have been reported to have significantly shorter time to haemostasis and ambulation in arterial access-site management. The current study aimed to evaluate the safety and efficacy as well as rate of urinary tract complications in patients receiving MC vs. VCD for venous access-site closure.

METHODS AND RESULTS

A total of 803 consecutive patients undergoing catheter ablation or left atrial appendage closure were classified into the VCD (n = 304) and the MC (n = 499) group, based on the methods used for haemostasis at the venous access site. Foley catheter was used for bladder-emptying in all MC cases and 15 VCD patients. At one site, VCD group patients with experience of MC in prior ablations were asked to describe their overall satisfaction level after comparing the past experience with the present. Haemostasis was achieved effectively in both populations. No VCD cases required >2 h bed rest, whereas 7 (1.4%) patients in the MC group needed prolonged immobilization (P = 0.04). Significantly higher incidence of access-site haematoma (P = 0.004) and urinary complications (P < 0.05) were observed in the MC group. Majority of VCD patients (68%) with prior experience of MC for haemostasis expressed satisfaction over the early ambulation and ability to void urine without bladder catheterization.

CONCLUSION

Vascular closure devices provided effective haemostasis, while reducing the access-site complications, ambulation time, and urinary complications.

Reducing unnecessary urethral catheter use in Japanese intensive care units: A multicenter interventional study

We conducted a preintervention-postintervention study to assess the effectiveness of a multimodal approach to reduce unnecessary urethral catheters in 5 Japanese intensive care units. After the intervention urethral catheter point prevalence decreased by 18%, from 79% preintervention to 61% postintervention, and catheter appropriateness increased by 28%, from 57% preintervention to 85% postintervention.

Role of lipopolysaccharides and lipoteichoic acids on C-Chrysophsin-1 interactions with model Gram-positive and Gram-negative bacterial membranes

Antimicrobial peptides (AMPs) are attractive as biomaterial coatings because they have broad spectrum activity against different microbes, with a low likelihood of incurring antimicrobial resistance. Direct action against the bacterial membrane is the most common mechanism of action (MOA) of AMPs, with specific MOAs dependent on membrane composition, peptide concentration, and environmental factors that include temperature. Chrysophsin-1 (CHY1) is a broad spectrum salt-tolerant AMP that is derived from a marine fish. A cysteine modification was made to the peptide to facilitate attachment to a surface, such as a biomedical device. The authors used quartz crystal microbalance with dissipation monitoring to study how temperature (23 and 37 °C) and lipid composition influence the MOA of cysteine-modified peptide (C-CHY1) with model membranes comprised of supported lipid bilayers (SLBs). These two temperatures were used so that the authors could better understand the differences in behavior between typical lab temperatures and physiologic conditions. The authors created model membranes that mimicked properties of Gram-negative and Gram-positive bacteria in order to understand how the mechanisms might differ for different types of bacterial systems. SLB models of Gram-positive bacterial membranes were formed using combinations of phosphatidylcholine, phosphatidylglycerol (PG), and S. aureus-derived lipoteichoic acid (LTA). SLB models of Gram-negative bacterial membranes were formed using combinations of phosphatidylethanolamine (PE), PG, and E. coli-derived lipopolysaccharides (LPS). The molecules that distinguish Gram-positive and Gram-negative membranes (LTA and LPS) have the potential to alter the MOA of C-CHY1 with the SLBs. The authors' results showed that the MOA for the Gram-positive SLBs was not sensitive to temperature, but the LTA addition did have an effect. Specifically, similar trends in frequency and dissipation changes across all overtones were observed, and the same mechanistic trends were observed in the polar plots at 23 and 37 °C. However, when LTA was added, polar plots showed an association between C-CHY1 and LTA, leading to SLB saturation. This was demonstrated by significant changes in dissipation, while the frequency (mass) was not increasing after the saturation point. For the Gram-negative SLBs, the composition did not have a significant effect on MOA, but the authors saw more differences between the two temperatures studied. The authors believe this is due to the fact that the gel-liquid crystal transition temperature of PE is 25 °C, which means that the bilayer is more rigid at 23 °C, compared to temperatures above the transition point. At 23 °C, a significant energetic shift would be required to allow for additional AMP insertion. This could be seen in the polar plots, where there was a steep slope but there was very little mass addition. At 37 °C, the membrane is more fluid and there is less of an energetic requirement for insertion. Therefore, the authors observed greater mass addition and fewer changes in dissipation. A better understanding of C-CHY1 MOA using different SLB models will allow for the more rational design of future therapeutic solutions that make use of antimicrobial peptides, including those involving biomaterial coatings.

Time-Resolved Dynamics of Struvite Crystallization: Insights from the Macroscopic to Molecular Scale

The crystallization of magnesium ammonium phosphate hexahydrate (struvite) often occurs under conditions of fluid flow, yet the dynamics of struvite growth under these relevant environments has not been previously reported. In this study, we use a microfluidic device to evaluate the anisotropic growth of struvite crystals at variable flow rates and solution supersaturation. We show that bulk crystallization under quiescent conditions yields irreproducible data owing to the propensity of struvite to adopt defects in its crystal lattice, as well as fluctuations in pH that markedly impact crystal growth rates. Studies in microfluidic channels allow for time-resolved analysis of seeded growth along all three principle crystallographic directions and under highly controlled environments. After having first identified flow rates that differentiate diffusion and reaction limited growth regimes, we operated solely in the latter regime to extract the kinetic rates of struvite growth along the [100], [010], and [001] directions. In situ atomic force microscopy was used to obtain molecular level details of surface growth mechanisms. Our findings reveal a classical pathway of crystallization by monomer addition with the expected transition from growth by screw dislocations at low supersaturation to that of two-dimensional layer generation and spreading at high supersaturation. Collectively, these studies present a platform for assessing struvite crystallization under flow conditions and demonstrate how this approach is superior to measurements under quiescent conditions.

Accuracy of catheter-associated urinary tract infections reported to the National Healthcare Safety Network, January 2010 through July 2018

BACKGROUND

Surveillance of health care-associated, catheter-associated urinary tract infections (CAUTI) are the corner stone of infection prevention activity. The Centers for Disease Control and Prevention's National Healthcare Safety Network provides standard definitions for CAUTI surveillance, which have been updated periodically to increase objectivity, credibility, and reliability of urinary tract infection definitions. Several state health departments have validated CAUTI data that provided insights into accuracy of CAUTI reporting and adherence to CAUTI definition.

METHODS

Data accuracy measures included pooled mean sensitivity, specificity, positive predictive value, and negative predictive value. Total CAUTI error rate was computed as proportion of mismatches among total records. The impact of 2015 CAUTI definition changes were tested by comparing pooled accuracy estimates of validations prior to 2015 with post-2015.

RESULTS

At least 19 state health departments conducted CAUTI validations and indicated pooled mean sensitivity of 88.3%, specificity of 98.8%, positive predictive value of 93.6%, and negative predictive value of 97.6% of CAUTI reporting to the National Healthcare Safety Network. Among CAUTIs misclassified (121), 66% were underreported and 34% were overreported. CAUTI classification error rate declined significantly from 4.3% (pre-2015) to 2.4% (post-2015). Reasons for CAUTI misclassifications included: misapplication of CAUTI definition, misapplication of general health care-associated infection definitions, and clinical judgement over surveillance definition.

CONCLUSIONS

CAUTI underreporting is a major concern; validations provide transparency, education, and relationship building to improve reporting accuracy.

Early removal of urinary drainage in patients receiving epidural analgesia after colorectal surgery within an ERAS protocol is feasible

BACKGROUND

ERAS guidelines recommend early removal of urinary drainage after colorectal surgery to reduce the risk of catheter-associated urinary tract infections (CAUTI). Another recommendation is the postoperative use of epidural analgesia (EA). In many types of surgery, EA was shown to increase the risk of postoperative urinary retention (POUR). This study determines the impact of early urinary catheter removal on the incidence of POUR and CAUTI under EA after colorectal surgery.

METHODS

Eligible patients were scheduled for colorectal surgery within the local ERAS protocol between April 2015 and September 2016. Urinary drainage was removed on the first postoperative day while EA was still in place (early removal group (ER)). The incidences of POUR and CAUTIs were recorded prospectively. Results were compared with a historical control (CG), which was operated between October 2013 and March 2015.

RESULTS

POUR occurred significantly more often in the ER (ER 7.8%; CG 2.6%), while CAUTIs were significantly less frequent in the ER (13.8%) compared with the CG (30.4%). Patients who developed POUR were characterised by a significantly higher rate of abdominoperineal resections, by a higher frequency of rectal cancer, and a higher male-to-female ratio compared with patients who did not develop POUR.

CONCLUSION

Early removal of urinary drainage after colorectal surgery while EA is still in place is feasible; it reduces the incidence of CAUTI but increases the risk of POUR. Thus, screening for POUR in patients with failure to void after six to 8 h is mandatory under these clinical conditions.

The Connected Catheter for management of Chronic Urinary Retention (CUR) in an adult male with Neurogenic Bladder – Case study

Millions of adults suffer from chronic urinary retention or disorders that require catheterization for bladder management. The current standard of care for these patients consists of three different methods of catheterization, all of which present varying levels of infection, urethral trauma, and patient discomfort or inconvenience. We studied a 34 -year-old man with chronic urinary retention, frequent urinary tract infections and strictures, with a fully internal, extended use, wirelessly controlled catheter system. This new system was designed to improve overall Quality of Life and potentially decrease the rate of catheter associated clinical complications.

Postoperative Urinary Tract Infection Quality Assessment and Improvement: The S.T.O.P. UTI Program and Its Impact on Hospitalwide CAUTI Rates

BACKGROUND

Postoperative urinary tract infection (UTI) is a frequent complication that diminishes patient experience and incurs substantial costs. The purpose of this project was to develop a urinary tract care assessment tool that would lead to actionable quality improvement initiatives.

METHODS

Multidisciplinary teams at a single institution developed the S.T.O.P. UTI algorithm to assess elements related to urinary catheter care: Sterile catheter placement, Timely catheter removal, Optimal collection bag position, and Proper urine sampling for urinalysis and culture. Based on this evaluation, a targeted intervention was applied to address deficient areas in surgical patients. UTI rates were monitored.

RESULTS

The assessment revealed that best practice for sterile placement was being performed but that time to removal, optimal positioning, and proper sampling could be improved. Providers were educated on best practice for catheter removal, nurses placed a reminder note on the chart, personnel were taught about optimal catheter positioning, and nursing assistants were educated on best practices for collection of urine. From 2012 to 2015, non-risk-adjusted UTI rates in surgical patients decreased from 2.90% to 0.46% (p = 0.0003), and the American College of Surgeons National Surgical Quality Improvement Program risk-adjusted comparison improved from the 8th to the 4th decile. Simultaneously, hospitalwide catheter-associated UTI rates also decreased, from 2.24/1,000 catheter-days in 2014 to 0.70/1,000 catheter-days in 2016 (p < 0.001).

CONCLUSION

The S.T.O.P. UTI algorithm is a tool that hospitals can use to systematically assess UTI processes. The program can identify areas for improvement specific to an institution, directing the allocation of quality improvement resources to decrease both surgical and medical UTIs.

Stethoscope disinfection is rarely done in Ethiopia: What are the associated factors?

Introduction

The stethoscope, which is non-critical medical devices and a symbol of healthcare, is likely to be contaminated by pathogenic microorganisms and can play a contributory role in the transmission of hospital-acquired infection. And regular cleaning of the diaphragm of the stethoscope with a suitable disinfectant is decisive. However, in the resource-constrained setting like many healthcare facilities in Ethiopia healthcare provider’s stethoscope disinfection practice and its associated factors have not been well studied so far. Therefore, this study sought to determine stethoscope disinfection practice and associated factors among the healthcare providers in Addis Ababa, Ethiopia.

Methods

A facility-based cross-sectional study was carried out between April and May 2016. For this study, 576 healthcare providers (physicians, health officers, nurses, midwives, and anesthesiologist) were included from 21 healthcare facilities in Addis Ababa. A pre-tested structured questionnaire was used for data collection. Descriptive statistics were computed. Bivariate and multivariable logistic regression analyses were used to identify factors that were significantly associated with stethoscope disinfection after every use.

Results

A total of 546 healthcare providers participated in this study, for a response rate of 94.7%. Two-fifths, 39.7% (95%CI: 35.9, 44.0%) of healthcare providers disinfecting their stethoscope after every use. And a significant number of participants 34.6% (95%CI: 30.8, 38.5%) never disinfect their stethoscope. Three out of four (76.0%) healthcare providers believe that stethoscope contamination can contribute to the transmission of infections. Safe infection prevention practice (AOR = 3.79, 95%CI: 2.45–5.84), awareness on infection prevention guideline (AOR = 1.93; 95%CI: 1.31, 2.82), and favorable attitude towards infection prevention (AOR = 1.73, 95%CI: 1.02, 2.93) were significantly associated with stethoscope disinfection after every use. The study also found that the odds of stethoscope disinfection were likely to be reduced by 79% among physicians than nurses (AOR = 0.21; 95%CI: 0.09, 0.49).

Conclusions

Only a small proportion of healthcare providers disinfect their stethoscopes after every use. Factors such as safe infection prevention practice, awareness on infection prevention guidelines, and favorable attitude towards infection prevention were the independent predictors of stethoscopes disinfection after every use. Hence, promotion of stethoscope hygiene along with an educational program to enhance disinfection compliance in healthcare facilities may have a positive effect.

Pediatric Quality Metrics Related to Quality and Cost

The institution of pediatric quality in health care has grown in the past decade but continues to evolve. Children's health care emphasizes the importance of maintenance of health and prevention of illness, which can be measured based on immunization rates, routine or scheduled well care, and early intervention. Pediatric quality measures and indicators have become the basis for payment of services and a true goal to value. Designing processes such as pay-for-performance models, volume-based care, and coordination of care assist in assuring that children receive high-quality health care.

Eradicating uropathogenic Escherichia coli biofilms with a ciprofloxacin-dinitroxide conjugate

Urinary tract infections (UTIs) are amongst the most common and prevalent infectious diseases worldwide, with uropathogenic Escherichia coli (UPEC) reported as the main causative pathogen. Fluoroquinolone antibiotics are commonly used to treat UTIs but for infections involving UPEC biofilms, which are commonly associated with catheter use and recurrent episodes, ciprofloxacin is often ineffective. Here we report the development of a ciprofloxacin-dinitroxide (CDN) conjugate with potent UPEC biofilm-eradication activity. CDN 11 exhibited a 2-fold increase in potency over the parent antibiotic ciprofloxacin against UPEC biofilms. Moreover, CDN 11 resulted in almost complete UPEC biofilm cell eradication (99.7%) at concentrations as low as 12.5 μM, and significantly potentiated ciprofloxacin's biofilm-eradication activity against UPEC upon co-administration. The biofilm-eradication activity of CDN 11 highlights the potential of nitroxide functionalized antibiotics as a promising strategy for the treatment of biofilm-related UTIs.

Model to evaluate the impact of hospital-based interventions targeting false-positive blood cultures on economic and clinical outcomes

BACKGROUND

Blood culture contamination (BCC) increases length of stay (LOS) and leads to unnecessary antimicrobial therapy and/or hospital-acquired conditions (HACs).

AIM

To quantify the magnitude of additional LOS, costs to hospitals and society, and harm to patients attributable to BCC.

METHODS

A retrospective matched survival analysis was performed involving hospitalized patients with septicaemia-compatible symptoms. BCC costs, HACs and potential savings were calculated based on the primary LOS data, a modified Delphi process and published sources. The cost analysis compared standard care with interventions for reducing BCC, and estimated annual economic and clinical consequences for a typical hospital and for the USA as a whole.

FINDINGS

Patients with BCC experienced a mean increase in LOS of 2.35 days (P=0.0076). Avoiding BCC would decrease costs by $6463 [$4818 from inpatient care (53% of which was from reduced LOS) and 26% from reduced antibiotic use]. Annually, in a typical 250- to 400-bed hospital, employing phlebotomists would save $1.3 million and prevent 24 HACs (including two cases of Clostridium difficile infection); based on clinical efficacy evidence, use of the studied initial specimen diversion device (ISDD) would save $1.9 million and prevent 34 HACs (including three cases of C. difficile infection). In the USA, the respective strategies would prevent 69,300 and 102,900 HACs (including 6000 and 8900 cases of C. difficile infection) and save $5 and $7.5 billion.

CONCLUSION

Costs and clinical burdens associated with false-positive cultures are substantial and can be reduced by available interventions, including phlebotomists and use of ISDD.

Targeting Catheter-Associated Urinary Tract Infections in a Trauma Population: A 5-S Bundle Preventive Approach

Complications from catheter-associated urinary tract infections (CAUTIs) can cause morbidity and mortality. Our institution's Trauma Quality and Improvement Program analysis identified CAUTIs as an outlier complication in our trauma population. This study aimed to determine whether implemented measures would reduce CAUTI rates in trauma population. A 5-S CAUTI bundle was implemented. Its effects were measured on a prospectively collected dataset of adult trauma patients using our Trauma Registry during the 4-year study period. Implemented measures included (1) staff education, (2) bladder catheter stabilization, (3) patient and caregiver education, (4) keeping the collection bag below the bladder and above the floor, and (5) daily evaluations for discontinuation. Chi-squared and t-test analyses were used with significance defined as p < .05. Twelve thousand nine hundred and sixty-two trauma patients were admitted to trauma service during the 4-year study period. Of these, 94 developed CAUTIs, with an average age of 67 years and 56% were females. The average injury severity score was 16 in patients with CAUTIs compared with 9 in non-CAUTI patients (p < .0002). In the index year, CAUTIs occurred in 41 out of 3,054 (1.34%), the following year there were 34 out of 3,455 (0.98%), in 2016 there were 11 out of 3,246 (0.33%), and 8 out of 3,207 (0.25%) in 2017 (p < .001). Results demonstrated an 80% reduction in CAUTI rate. Execution of the 5-S CAUTI bundle resulted in a significant 80% reduction in CAUTI rate in our trauma population.

A Rapid and Low-Cost Pathogen Detection Platform by Using a Molecular Agglutination Assay

Rapid and low-cost pathogen diagnostic approaches are critical for clinical decision-making procedures. Cultivating bacteria often takes days to identify pathogens and provide antimicrobial susceptibilities. The delay in diagnosis may result in compromised treatment and inappropriate antibiotic use. Over the past decades, molecular-based techniques have significantly shortened pathogen identification turnaround time with high accuracy. However, these assays often use complex fluorescent labeling and nucleic acid amplification processes, which limit their use in resource-limited settings. In this work, we demonstrate a wash-free molecular agglutination assay with a straightforward mixing and incubation step that significantly simplifies procedures of molecular testing. By targeting the 16S rRNA gene of pathogens, we perform a rapid pathogen identification within 30 min on a dark-field imaging microfluidic cytometry platform. The dark-field images with low background noise can be obtained using a narrow beam scanning technique with off-the-shelf complementary metal oxide semiconductor (CMOS) imagers such as smartphone cameras. We utilize a machine learning algorithm to deconvolute topological features of agglutinated clusters and thus quantify the abundance of bacteria. Consequently, we unambiguously distinguish Escherichia coli positive from other E. coli negative among 50 clinical urinary tract infection samples with 96% sensitivity and 100% specificity. Furthermore, we also apply this quantitative detection approach to achieve rapid antimicrobial susceptibility testing within 3 h. This work exhibits easy-to-use protocols, high sensitivity, and short turnaround time for point-of-care testing uses.

Assessment of knowledge and practices of healthcare workers towards infection prevention and associated factors in healthcare facilities of West Arsi District, Southeast Ethiopia: a facility-based cross-sectional study

Background

The prevention of healthcare associated infections is central to the provision of safe, high quality healthcare. Infections acquired in healthcare facilities are a major public health concern, contributing to increased morbidity, mortality, and cost in both developed and developing countries. Although most of these infections can be prevented with relatively inexpensive infection prevention and control measures in many developing countries, in sub-Saharan African healthcare facilities have no effective infection prevention programs. Additionally, there is limited information on healthcare worker infection prevention knowledge and practice in countries such as Ethiopia. The aim of this study was to assess the knowledge and practices of healthcare workers with respect to infection prevention and associated factors in healthcare facilities in southeast Ethiopia.

Methods

A facility-based cross-sectional study design was used to study healthcare workers in the southeast, Ethiopia. Multi-stage sampling was employed to select 680 healthcare workers from 30 randomly selected healthcare facilities. Data was collected using a self-administered structured questionnaire. Descriptive statistics were computed. Multivariable logistic regression was performed to identify factors associated with healthcare workers infection prevention knowledge and practice.

Results

A total of 648 healthcare workers participated in this study, for a response rate of 95.3%. Of these, 53.7% (95% CI: 49.8, 57.4%) and 36.3% (95% CI: 32.4, 40.1%) of the respondents were assessed as knowledgeable and reported safe infection prevention practices respectively. The likelihood of self-reporting safe infection prevention practice significantly increased if healthcare workers had received training (AOR = 5.31; 95% CI: 2.42,11.63) and had infection prevention guidelines available (AOR = 3.34; 95% CI: 1.65, 6.76). Healthcare workers were more likely to have infection prevention knowledge if they worked longer ten years or more (AOR = 3.41; 95% CI: 1.22, 9.55); worked in facilities with infection prevention committees (AOR = 1.78; 95% CI: 1.01, 3.13), had infection prevention guidelines available (AOR = 2.44; 95% CI: 1.45, 4.12); had training (AOR = 5.02; 95% CI: 1.45, 8.59).

Conclusions

Inadequate infection prevention knowledge and unsafe practices were frequent among study participants, reflecting a potentially common problem at public healthcare facilities in southeast Ethiopia. Healthcare workers have better knowledge and safer practices if they had received infection prevention training and had infection prevention guidelines in their workplace. Interventions should be designed to consider these identified factors.

Fouling-Resistant Hydrogels Prepared by the Swelling-Assisted Infusion and Polymerization of Dopamine

Biofilm-associated infections stemming from medical devices are increasingly challenging to treat due to the spread of antibiotic resistance. In this study, we present a simple strategy that significantly enhances the antifouling performance of covalently crosslinked poly(ethylene glycol) (PEG) and physically crosslinked agar hydrogels by incorporation of the fouling-resistant polymer zwitterion, poly(2-methacryloyloxyethyl phosphorylcholine) (pMPC). Dopamine polymerization was initiated during swelling of the hydrogels, which provided dopamine and pMPC an osmotic driving force into the hydrogel interior. Both PEG and agar hydrogels were synthesized over a broad range of storage moduli (1.7,1300 kPa), which remained statistically equivalent after being functionalized with pMPC and polydopamine (PDA). When challenged with fibrinogen, a model blood-clotting protein, the pMPC/PDA-functionalized PEG and agar hydrogels displayed a >90% reduction in protein adsorption compared to hydrogel controls. Further, greater than an order-of-magnitude reduction in Escherichia coli and Staphylococcus aureus adherence was observed. This study demonstrates a versatile materials platform to enhance the fouling resistance of hydrogels through a pMPC/PDA incorporation strategy that is independent of the chemical composition and network structure of the original hydrogel.

Implementation of a Nurse-Driven Protocol for Catheter Removal to Decrease Catheter-Associated Urinary Tract Infection Rate in a Surgical Trauma ICU

INTRODUCTION

Early removal of urinary catheters is an effective strategy for catheter-associated urinary tract infection (CAUTI) prevention. We hypothesized that a nurse-directed catheter removal protocol would result in decreased catheter utilization and CAUTI rates in a surgical trauma intensive care unit (STICU).

METHODS

We performed a retrospective, cohort study following implementation of a multimodal CAUTI prevention bundle in the STICU of a large tertiary care center. Data from a 19-month historical control were compared to data from a 15-month intervention period. Pre- and postintervention indwelling catheter utilization and CAUTI rates were compared.

RESULTS

Catheter utilization decreased significantly with implementation of the nurse-driven protocol from 0.78 in the preintervention period to 0.70 in the postintervention period (P < .05). As a result of the bundle, the CAUTI rate declined significantly, from 5.1 to 2.0 infections per 1000 catheter-days in the pre- vs postimplementation period (Incident Rate Ratio [IRR]: 0.38, 95% confidence interval: 0.21-0.65).

CONCLUSIONS

Implementation of a nurse-driven protocol for early urinary catheter removal as part of a multimodal CAUTI intervention strategy can result in measurable decreases in both catheter utilization and CAUTI rates.

Reducing the rate of post-surgical urinary tract infections in orthopedic patients

Urinary tract infection (UTI) is the fourth leading cause of healthcare-associated infections, with approximately 70%-80% being attributed to the inappropriate use of indwelling catheters. In many cases, indwelling catheters are used inappropriately without any valid indication, creating potentially avoidable and significant patient distress, discomfort, pain and activity restrictions, together with substantial care burden, cost and hospitalisation. In the Division of Orthopedic Surgery at Toronto Western Hospital (TWH), we identified UTI rate reduction as a quality improvement priority. Patients who underwent total hip and knee joint replacements and hip fracture repairs at TWH were monitored for the incidence of UTI and the usage of catheters. The data collected as part of the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) revealed UTI rate of 2.1% among 666 patients who were treated between January and June 2016. Data collected through a custom field in the ACS NSQIP workstation further revealed that indwelling catheters were overused, with 55.2% of patients receiving indwelling catheters in the same time period. These data were presented to the orthopaedic leadership group and surgeons at TWH in July 2016 to set the quality improvement target and create the working group. Nursing staff was provided education to strictly follow the institutional catheter-associated UTI prevention guidelines and change ideas based on the guidelines were implemented in July 2016. As a result, the rate of UTI decreased to 1.1% and the use of indwelling catheter decreased to 19.8% among 883 patients who were treated between July 2016 and March 2017. The study indicated that a systematic approach, engaging all front-line staff including nurse educators and nurse practitioners, helps to facilitate implementation of practice changes. We expect that ongoing reminders and education ensure that the changes are sustainable.

The Impact of 2015 NHSN Catheter-associated Urinary Tract Infection (CAUTI) Definition Change on Central Line-associated Bloodstream Infection (CLABSI) Rates and CLABSI Prevention Efforts at an Academic Medical Center

The 2015 changes in the catheter-associated urinary tract infection definition led to an increase in central line-associated bloodstream infections (CLABSIs) and catheter-related candidemia in some health systems due to the change in CLABSI attribution. However, our rates remained unchanged in 2015 and further declined in 2016 with the implementation of new vascular-access guidelines.Infect Control Hosp Epidemiol 2018;878-880.

Review of Strategies to Reduce Central Line-Associated Bloodstream Infection (CLABSI) and Catheter-Associated Urinary Tract Infection (CAUTI) in Adult ICUs

Central line-associated bloodstream infection (CLABSI) and catheter-associated urinary tract infection (CAUTI) are costly and morbid. Despite evidence-based guidelines, Some intensive care units (ICUs) continue to have elevated infection rates. In October 2015, we performed a systematic search of the peer-reviewed literature within the PubMed and Cochrane databases for interventions to reduce CLABSI and/or CAUTI in adult ICUs and synthesized findings using a narrative review process. The interventions were categorized using a conceptual model, with stages applicable to both CAUTI and CLABSI prevention: (stage 0) avoid catheter if possible, (stage 1) ensure aseptic placement, (stage 2) maintain awareness and proper care of catheters in place, and (stage 3) promptly remove unnecessary catheters. We also looked for effective components that the 5 most successful (by reduction in infection rates) studies of each infection shared. Interventions that addressed multiple stages within the conceptual model were common in these successful studies. Assuring compliance with infection prevention efforts via auditing and timely feedback were also common. Hospitalists with patient safety interests may find this review informative for formulating quality improvement interventions to reduce these infections.

Biofilm Formation by Uropathogenic Escherichia coli Is Favored under Oxygen Conditions That Mimic the Bladder Environment

One of the most common urologic problems afflicting millions of people worldwide is urinary tract infection (UTI). The severity of UTIs ranges from asymptomatic bacteriuria to acute cystitis, and in severe cases, pyelonephritis and urosepsis. The primary cause of UTIs is uropathogenic Escherichia coli (UPEC), for which current antibiotic therapies often fail. UPEC forms multicellular communities known as biofilms on urinary catheters, as well as on and within bladder epithelial cells. Biofilm formation protects UPEC from environmental conditions, antimicrobial therapy, and the host immune system. Previous studies have investigated UPEC biofilm formation in aerobic conditions (21% oxygen); however, urine oxygen tension is reduced (4–6%), and urine contains molecules that can be used by UPEC as alternative terminal electron acceptors (ATEAs) for respiration. This study was designed to determine whether these different terminal electron acceptors utilized by E. coli influence biofilm formation. A panel of 50 urine-associated E. coli isolates was tested for the ability to form biofilm under anaerobic conditions and in the presence of ATEAs. Biofilm production was reduced under all tested sub-atmospheric levels of oxygen, with the notable exception of 4% oxygen, the reported concentration of oxygen within the bladder.

Urinary Tract Infections

Catheter-associated urinary tract infection (CAUTI) remains one of the most prevalent, yet preventable, health care-associated infections and predominantly occurs in patients with indwelling urinary catheters. Targeted strategies for prevention of CAUTI include limiting urinary catheter use; physician reminder systems, nurse-initiated discontinuation protocols, and automatic stop orders have successfully decreased catheter duration. Alternatives to indwelling catheters should be considered in appropriate patients. If indwelling catheterization is necessary, proper aseptic practices for catheter insertion and maintenance and closed catheter collection system is essential for preventing CAUTI. The use of "bladder bundles" and collaboratives aids in the effective implementation of CAUTI prevention measures.

"Lose the Tube": A Choosing Wisely initiative to reduce catheter-associated urinary tract infections in hospitalist-led inpatient units

We developed a multidisciplinary initiative, "Lose the Tube," focused on a Choosing Wisely recommendation to decrease catheter-associated urinary tract infection (CAUTI) rates and catheter days. Through an electronic health record catheter identification tool, daily interdisciplinary query, and clinician education, our multifaceted intervention reduced mean per-person catheter days from 3.3 to 2.9, decreased CAUTI rates from 2.85 to 0.32 per 1,000 catheter days, and reduced cost by $32,245.

Impact and Limitations of the 2015 National Health and Safety Network Case Definition on Catheter-Associated Urinary Tract Infection Rates

Application of the new 2015 NHSN definition of catheter-associated urinary tract infection (CAUTI) in intensive care units reduced CAUTI rates by ~50%, primarily due to exclusion of candiduria. This significant reduction in CAUTI rates resulting from the changes in the definition must be considered when evaluating effectiveness of CAUTI prevention programs. Infect Control Hosp Epidemiol 2017;38:239-241.

Urinary catheters: history, current status, adverse events and research agenda

For more than 3500 years, urinary catheters have been used to drain the bladder when it fails to empty. For people with impaired bladder function and for whom the method is feasible, clean intermittent self-catheterization is the optimal procedure. For those who require an indwelling catheter, whether short- or long-term, the self-retaining Foley catheter is invariably used, as it has been since its introduction nearly 80 years ago, despite the fact that this catheter can cause bacterial colonization, recurrent and chronic infections, bladder stones and septicaemia, damage to the kidneys, the bladder and the urethra, and contribute to the development of antibiotic resistance. In terms of medical, social and economic resources, the burden of urinary retention and incontinence, aggravated by the use of the Foley catheter, is huge. In the UK, the harm resulting from the use of the Foley catheter costs the National Health Service between £1.0-2.5 billion and accounts for ∼2100 deaths per year. Therefore, there is an urgent need for the development of an alternative indwelling catheter system. The research agenda is for the new catheter to be easy and safe to insert, either urethrally or suprapubically, to be retained reliably in the bladder and to be withdrawn easily and safely when necessary, to mimic natural physiology by filling at low pressure and emptying completely without damage to the bladder, and to have control mechanisms appropriate for all users.

Health care-associated infections among critically ill children in the US, 2007-2012

BACKGROUND

Health care-associated infections (HAIs) are harmful and costly and can result in substantial morbidity for hospitalized children; however, little is known about national trends in HAIs in neonatal and pediatric populations. Our objective was to determine the incidence of HAIs among a large sample of hospitals in the United States caring for critically ill children from 2007 to 2012.

METHODS

In this cohort study, we included NICUs and PICUs located in hospitals reporting data to the Centers for Disease Control and Prevention's National Healthcare Safety Network for central line-associated bloodstream infections (CLABSIs), ventilator-associated pneumonias, and catheter-associated urinary tract infections. We used a time-series design to evaluate changes in HAI rates.

RESULTS

A total of 173 US hospitals provided data from NICUs, and 64 provided data from PICUs. From 2007 to 2012, rates of CLABSIs decreased in NICUs from 4.9 to 1.5 per 1000 central-line days (incidence rate ratio (IRR) per quarter = 0.96, 95% confidence interval 0.94-0.97) and in PICUs from 4.7 to 1.0 per 1000 central-line days (IRR per quarter = 0.96 [0.94-0.98]). Rates of ventilator-associated pneumonias decreased in NICUs from 1.6 to 0.6 per 1000 ventilator days (IRR per quarter = 0.97 [0.93-0.99]) and PICUs from 1.9 to 0.7 per 1000 ventilator-days (IRR per quarter = 0.95 [0.92-0.98]). Rates of catheter-associated urinary tract infections did not change significantly in PICUs.

CONCLUSIONS

Between 2007 and 2012 there were substantial reductions in HAIs among hospitalized neonates and children.

A Tool to Assess the Signs and Symptoms of Catheter-Associated Urinary Tract Infection: Development and Reliability

The purpose of this pilot study was to determine the inter-rater reliability of four clinical manifestations of catheter-associated urinary tract infections (CAUTI) among hospitalized adults with short-term indwelling urinary catheters using a tool developed for this purpose: the CAUTI Assessment Profile (CAP). Study participants included 30 non-pregnant English-speaking adults, recruited from two community hospitals. Three nurses assessed each participant for fever, suprapubic tenderness, flank tenderness, and delirium using standardized techniques. Based on the generalized Kappa statistic and 95% confidence intervals, there was evidence of strong inter-rater reliability for fever (K = 1.00, 0.793-1.207), suprapubic tenderness (K = 0.39, 0.185-0.598), and delirium (K = 0.58, 0.379-0.792), but not for flank tenderness (K = 0.29, -0.036 to 0.617). This study provides preliminary evidence that the CAP can be used to consistently identify these clinical signs and symptoms of CAUTI in hospitalized adults.

Demography and burden of care associated with patients readmitted for urinary tract infection

BACKGROUND

Urinary tract infection (UTI) is one of the most prevalent admission diagnoses in hospital-based clinical practice. Despite its frequency, few data are available regarding its demographics and economic implications.

PURPOSE

To describe the demography, epidemiology, and burden of care of patients admitted to hospital with UTI and compare these characteristics depending on admission status.

METHODS

A retrospective cohort study using an administrative database of patients admitted to Hartford Hospital (September 2011-August 2012) with UTI. Patient demographics, hospital characteristics, and total costs of care were examined.

RESULTS

A total of 2345 unique patients were included. The mean age of the patients was 78 years and 71% were female. Median length of stay and total cost were 5 days and $8326 (interquartile range $5388-$14,179), respectively. A total of 359 patients (16.4%) were readmitted within 30 days, of which 111 patients (5.1%) had UTI on readmission. Only 16.3% of readmitted patients were infected with the same causative pathogen. A significant increase in the incidence of Enterococcus faecalis (1.2% vs. 9.3%; p = 0.046) occurred upon readmission, whereas occurrence of Enterobacteriaceae infection decreased in the readmission group (50.0% vs. 25.6%; p = 0.006), including a lower proportion of Escherichia coli (32.5% vs. 11.6%; p < 0.001). A higher proportion of readmission pathogens were nonsusceptible, including significant changes to cefazolin (24.4% vs. 63.6%; p = 0.004) and cefepime (8.7% vs. 27.6; p = 0.05).

CONCLUSION

UTI is highly prevalent and is associated with significant utilization of health-care resources among hospitalized patients. These findings, coupled with considerable rates of 30-day readmission, stress the importance of proper diagnosis and treatment.