Author Interviews, Urinary Tract Infections, Urology / 24.04.2023 Interview with: Dr Jacqueline Stephens MPH, PhD Epidemiologist &  Senior lecturer Flinders University What is the background for this study? What are the main findings? Response: An increase in the volume of evidence published in the peer-reviewed literature on this topic prompted an update of this Cochrane Review. (more…)
Author Interviews, Urinary Tract Infections / 21.03.2019 Interview with: Prof. Lindsay E Nicolle Department of Internal Medicine, School of Medicine Rady Faculty of Health Sciences University of Manitoba, Winnipeg, Canada What is the background for these updated guidelines? What are the main recommendations? Response: The guideline updates the guideline previously published in 2005. There is some new information published in the interim, but the recommendations from the earlier guideline have not changed. In addition, some populations not included in the 2005 guideline are addressed in the update. These include children, transplant recipients, and patients undergoing elective surgery with prosthesis implantation. (more…)
Author Interviews, Cost of Health Care, Critical Care - Intensive Care - ICUs, Health Care Systems, Hospital Acquired, JAMA, Urinary Tract Infections / 06.02.2019 Interview with: Heather Hsu, MD MPH Assistant Professor of Pediatrics Boston University School of Medicine Boston Medical Center Boston, MA 02118 What is the background for this study? What are the main findings?  Response: In October 2013, the Centers for Medicare and Medicaid Services (CMS) implemented value-based incentive programs to financially reward or penalize hospitals based on quality metrics. Two of these programs – Hospital Value Based Purchasing and the Hospital Acquired Condition Reduction Program – began targeting hospitals’ rates of certain healthcare-associated infections deemed to be preventable in October 2015. Previous studies demonstrated minimal impact of these value-based payment programs on other measures of hospital processes, patient experience, and mortality. However, their impact on healthcare-associated infections was unknown. Our goal was to study the association of value-based incentive program implementation with healthcare-associated infection rates, using catheter-associated urinary tract infection in intensive care units (one of the targeted outcomes) as an example. We found no evidence that federal value-based incentive programs had any measurable association with changes in catheter-associated urinary tract infection rates in the critical care units of US hospitals. (more…)
Author Interviews, Infections, Lancet, Urinary Tract Infections / 27.10.2018 Interview with: Portsmouth, MD Senior Medical Director Shionogi Inc. What is the background for this study? What are the main findings? Response: Antibiotics for multidrug resistant  Gram-negative infections are desperately needed. Cefiderocol is the first siderophore antibiotic to reach patients. Siderophore antibiotics bind to free iron and use the bacterial active iron transport channels to cross the outer membrane of Gram-negative bacteria. Laboratory studies have shown that cefiderocol is active against multi-drug resistant Gram-negative bacteria, often where no other antibiotics are active. It is able to overcome most types of antibiotic resistance due to its active transport into cells and stability against all carbapenemases. The need for antibiotics for carbapenem resistant Gram-negative infections is described as a critical need by the WHO. This trial was the first in humans with serious infections and demonstrated excellent efficacy in a complicated patient population where almost ¼ were over 75 years of age. Additionally cefiderocol did not appear to have any safety problems, and was well tolerated. (more…)
Author Interviews, Critical Care - Intensive Care - ICUs, Infections, Urinary Tract Infections / 09.10.2018 Interview with: Thomas P. Lodise Jr., PharmD, PhD Clinical Pharmacist at the Stratton VA Medical Center in Albany, NY Albany College of Pharmacy and Health Sciences Albany, NY What is the background for this study? How does Ceftolozane/Tazobactam differ from other antibiotics for serious Gram-negative infections including Pseudomonas aeruginosa? Response: Treatment of patients with Gram-negative infections is increasingly difficult due to rising resistance to commonly used agents. Ceftolozane/tazobactam (C/T) is a potent anti-pseudomonal agent with broad Gram-negative coverage that is indicated for complicated urinary tract infections (cUTI) and complicated intra-abdominal infections (cIAI) and is currently being studied for ventilated nosocomial pneumonia. C/T differs from other antibiotics in terms of its potency against multi-drug resistant Pseudomonas aeruginosa, one of the most concerning and difficult-to-treat Gram-negative pathogens. This study evaluates C/T in a large database of US hospitals to better understand treatment patterns and associated outcomes. (more…)
Author Interviews, JAMA, Urinary Tract Infections, Urology, UT Southwestern / 02.10.2018 Interview with: "Glass of Water" by Iwan Gabovitch is licensed under CC BY 2.0Professor Yair Lotan MD Chief of Urologic Oncology Holder of the Helen J. and Robert S. Strauss Professorship in Urology UT Southwestern Medical Center at Dallas Department of Urology Dallas, Texas 75390-9110 What is the background for this study? What are the main findings? Response: Urinary tract infections are extremely common in women and many women experience recurrent episodes which impact their quality of life.  There are also many women who do not drink as much water as is recommended. This study found that in healthy women with recurrent UTIs who drink less than 1.5 liters per day, the additional intake of 1.5 liters of water daily reduced the risk of recurrent infections by nearly 50%.  (more…)
Author Interviews, Infections, Technology, Urinary Tract Infections / 24.09.2018 Interview with: SMARTPHONE, M.D. A NEW APP TO DIAGNOSE URINARY TRACT INFECTIONS Michael J. Mahan PhD Professor, Microbiology and Molecular Genetics Dept of Molecular, Cellular, and Developmental Biology University of California, Santa Barbara, CA What is the background for this study? What are the main findings? Response: Urinary tract infections (UTIs) cause nearly 10 million doctor visits each year in the United States. Women are much more likely to have a UTI than men, and are particularly harmful to pregnant women and can cause miscarriage. Thus, there is a medical need for rapid, low-cost, on-site testing — particularly in resource-limited settings. We developed a new app that enables a smartphone to identify (ID) bacteria causing UTIs in just one hour — a fraction of the time and cost of clinical diagnostics. (more…)
Author Interviews, Infections, Pain Research, PLoS, Urinary Tract Infections / 17.05.2018 Interview with: Ingvild Vik MD Doctoral Research Fellow Department of General Practice Institute of Health and Society - UiO University of Oslo, Norway What is the background for this study? Response: Uncomplicated urinary tract infection (UTI) is the most common bacterial infection in women. It is painful and troublesome, and even though it is often self-limiting most women who see a doctor will be prescribed an antibiotic, as antibiotics provide quick symptom relief.  Antibiotic resistance is a growing, serious public health problem. Antibiotic use is the main contributor to antibiotic resistance, and to stop the rapid development it is crucial that we reduce unnecessary use of antibiotics. Antibiotics can cause unpleasant and potentially severe side effects, so avoiding unnecessary use is also beneficial for the individual patient. A small German trial published in 2010 by Bleidorn et al. suggested that ibuprofen was non-inferior to the antibiotic ciprofloxacin in achieving symptomatic cure in uncomplicated UTI. This inspired us to conduct a larger trial to compare the anti-inflammatory drug ibuprofen to antibiotics in the treatment of uncomplicated UTI.  (more…)
Author Interviews, JAMA, University of Michigan, Urinary Tract Infections / 12.03.2018 Interview with: Keith SKayeMD, MPH Professor of Medicine, Division of Infectious Diseases University of Michigan Medical School Ann Arbor MI What is the background for this study? Response: Complicated complicated urinary tract infections (cUTI), including acute pyelonephritis, are a major cause of hospital admissions, and are associated with significant morbidity and mortality and can be difficult to treat. While the most common pathogen is Escherichia coli, the more problematic pathogens are multidrug-resistant (MDR) gram-negative organisms including other Enterobacteriaceae species. The prevalence of cUTI due to MDR gram-negative bacteria has risen. In some instances, MDR gram-negative bacteria isolated from the urinary tract can cause bacteremia. Vabomere was approved by the U.S. Food and Drug Administration (FDA) in August 2017 for the treatment of adult patients with cUTI, including pyelonephritis, caused by designated susceptible Enterobacteriaceae: Escherichia coli, Klebsiella pneumoniae and Enterobacter cloacae species complex.   Vabomere is a fixed-dose (2g/2g) combination product of a carbapenem and a β-lactamase inhibitor with potent in vitro activity against Klebsiella pneumoniae carbapenemase (KPC)-producing carbapenem-resistant Enterobacteriaceae (CRE), an important MDR organism associated with serious infections. The Targeting Antibiotic Non-susceptible Gram-negative Organisms (TANGO I) trial was the pivotal Phase 3 study that compared the efficacy and safety of Vabomere to piperacillin-tazobactam in the treatment of patients with cUTI and acute pyelonephritis. (more…)
Author Interviews, JAMA, Nutrition, Urinary Tract Infections, Yale / 27.10.2016 Interview with: Manisha Juthani-Mehta, MD, FACP, FIDSA, FSHEA Associate Professor, Section of Infectious Diseases Infectious Diseases Fellowship Program Director Yale University School of Medicine What is the background for this study? What are the main findings? Response: One of the first studies that showed that cranberry juice was effective in older women living in nursing homes and assisted living facilities was published in 1994. Since that time, there have been multiple conflicting studies as to the effect of cranberry juice or capsules. We started our study in 2012. Shortly thereafter, a Cochrane review suggested that the vast body of evidence did not suggest that cranberry products work for UTI prevention, but questions still existed as to whether the appropriate dose of cranberry was being tested. Since cranberry juice is hard for older women to drink (taste, sugar load, volume), capsules at a high dose of the active ingredient (72mg type A proanthocyanidin [PAC}) was worthwhile to test. This study was a clinical trial of two cranberry capsules with a total of 72mg of proanthocyanidin (pac) vs two placebo capsules to prevent bacteria in the urine of older women who live in nursing homes. Unfortunately, it didn't work. It also didn't reduce the number of hospitalizations, deaths, antibiotics used, or antibiotic resistant bugs in the urine. (more…)
Author Interviews, Infections, Pharmacology, Urinary Tract Infections / 25.06.2016 Interview with: Amanda Paschke, MD Director, Infectious Disease Clinical Research Merck Research Laboratories What is the background for this study? What are the main findings? Response: Relebactam is an investigational beta-lactamase inhibitor being developed as a fixed-dose combination with imipenem/cilastatin, which is a broad-spectrum antibiotic in the carbapenem class. In preclinical studies, this combination demonstrated antibacterial activity against a broad range of multidrug-resistant Gram-negative pathogens, including those producing extended-spectrum beta-lactamases such as Klebsiella pneumoniae carbapenemase (KPC)-producing Enterobacteriaceae and AmpC-producing Pseudomonas aeruginosa. Many of the most concerning infections caused by “superbugs” are caused by Gram-negative bacteria. These bacteria have evolved to be resistant to commonly used antibacterials, and even to antibacterials used as “last resort” treatment, which is why finding ways to treat them has become urgent. The addition of relebactam to imipenem is designed to restore activity of imipenem against certain imipenem-resistant strains of Gram-negative bacteria known to cause serious infections among people who often have other underlying medical conditions, which complicates treatment. This was a Phase 2, multicenter, randomized, double-blind, non-inferiority study. The study looked at the use of relebactam plus imipenem versus imipenem alone for the treatment of adult patients with complicated urinary tract infections. The primary endpoint for the trial was microbiological response at the completion of IV study therapy. The study met its primary endpoint, demonstrating that the combination of relebactam with imipenem was as at least as effective as imipenem alone for the treatment of complicated urinary tract infections. The trial also demonstrated that the combination of relebactam plus imipenem is well-tolerated, with a safety profile similar to that of imipenem alone in this patient. (more…)
Author Interviews, Hospital Acquired, NEJM, Urinary Tract Infections / 02.06.2016 Interview with: Sanjay Saint, MD, MPH Chief of Medicine VA Ann Arbor Healthcare System George Dock Professor of Internal Medicine & Senior Associate Chair - Department of Internal Medicine University of Michigan Medical School What is the background for this study? What are the main findings? Dr. Saint: Catheter-associated urinary tract infection (CAUTI) is a common, costly, and morbid complication of hospitalization. Urinary tract infection (UTI) is one of the most common device-related infections in the United States. CAUTI rates rose nationally between 2009 and 2013. We put in place a national program to reduce CAUTI. Specifically, we enrolled 926 intensive care unit (ICU) and non-ICU hospital units in 603 hospitals spread over 32 states, the District of Columbia and Puerto Rico between March 2011 and November 2013. By the end of the 18-month program, UTI rates among hospital patients in general wards had dropped by a third. Specifically: • The rate of CAUTIs dropped from 2.40 per 1000 days of catheter use to 2.05 (a ~14 percent overall drop). • Nearly all of the decrease in CAUTI rates was due to changes in infection rates in non-ICUs, which went from 2.28 to 1.54 infections per 1,000 catheter-days – a drop of 32 percent. In non-ICUs, the overall use of catheters decreased by 7%. • ICUs didn’t see a substantial change in either CAUTI or catheter use, likely because the nature of patients treated in ICUs means more frequent urine output monitoring and culturing of urine, so UTIs are more likely to be spotted. (more…)
Author Interviews, Urinary Tract Infections / 16.03.2016 Interview with: Maureen Maurer, MS  American Institute for Research Makawao, HI What is the background for this study? Response: Complications from UTIs are a serious medical problem for many people with neurological impairment such as spinal cord injuries. Detection is often difficult in these patients, resulting in delayed diagnosis and more serious infections such as pyelonephritis and sepsis.  UTIs are also the most common hospital acquired infection for all patients. Given the prevalence of UTIs, their complications, and increasing drug therapy resistance, improved early detection methods are needed. The olfactory acuity of dogs is over 100,000 times stronger than humans. Dogs’ superior olfactory capabilities have been employed to assist humans by detecting bombs, drugs, and more recently, cancer. Trained dogs may present a novel method for early UTI detection. Our objective was to determine whether canines could be trained to discriminate culture-positive from culture-negative urine samples.  (more…)
Author Interviews, BMJ, Urinary Tract Infections / 02.01.2016 Interview with: Ildikó Gágyor MD Senior researcher in primary care Department of General Practice University Medical Center Göttingen Göttingen, Germany Medical Research: What is the background for this study? What are the main findings? Dr. Gágyor: Uncomplicated urinary tract infection is a common problem for women. Affected patients are usually treated with antibiotics to combat both unpleasant symptoms and to combat infection. However, prescription of antibiotics for a self-limiting condition, contributes to increased resistance rates posing a serious long-term threat to public health. In a double blind randomised controlled trial we examined whether symptomatic treatment of uncomplicated urinary tract infection with ibuprofen reduces the rate of antibiotic prescriptions without a significant increase in symptoms, recurrences, or complications. In all, 494 women were randomly assigned to receive: either ibuprofen for three days and antibiotics only if symptoms are persistent; or antibiotic treatment with fosfomycin. Results showed that antibiotic use could be reduced significantly: of the 248 women in the ibuprofen group two thirds recovered without antibiotics and one third received antibiotics subsequently. Women in the ibuprofen group had a higher symptom burden but in both groups, symptoms decreased within the first week (Figure 1). Six cases of pyelonephritis occurred, one in the fosfomycin group, five in the ibuprofen group. (more…)
Author Interviews, PLoS, Urinary Tract Infections / 18.12.2015 Interview with: Dr Sandra A. Wilks PhD Senior Research Fellow IfLS Knowledge Mobilisation Fellow in Healthcare Technologies Faculty of Natural and Environmental Science & Faculty of Health Sciences Centre for Biological Sciences, University of Southampton, Southampton, UK  Medical Research: What is the background for this study? What are the main findings? Dr. Wilks: The use of indwelling Foley urinary catheters for extended periods of time results in high risks of urinary tract infections (UTI) and catheter blockages. Blockages are often caused by the presence of Proteus mirabilis, a urease-producing bacterium which results in an increase of the urine pH and the development of crystalline biofilms. Biofilms develop when bacteria attach to a surface, forming a community structure, held together by extracellular polymeric substances (EPS). Once in a biofilm, bacteria exhibit high resistance to the action of antibiotics and are protected by other stress factors. The crystalline biofilms resulting from the presence of Proteus are highly complex environments and cause complete blockage of the catheter within days. Such blockages cause pain and trauma for patients, and result in high demands on healthcare resources. In this study, we have used an advanced microscopy technique (episcopic differential interference contrast, EDIC microscopy developed by Best Scientific) to track the development of these crystalline encrustations on two commonly used catheter materials; silicone and hydrogel latex. We have identified four distinct stages to crystalline biofilm formation;
  • (1) an initial foundation layer (conditioning film) formed by individual 'colonising' P. mirabilis cells, which occurred in less than 1 hour;
  • (2) this was rapidly followed by a sheet-like microcrystalline material (after 24 hours) that covers this conditioning film;
  • (3) after 4 days exposure, large amounts of crystalline material was seen to extend out from the surface with;
  • (4) defined struvite crystals embedded within the structure and P. mirabilis visible throughout. This pattern was the same on both materials.
Author Interviews, JAMA, Outcomes & Safety, Urinary Tract Infections, Urology / 19.11.2015 Interview with: Jerome A. Leis, MD MSc FRCPC Staff physician, General Internal Medicine and Infectious Diseases Physician Lead, Antimicrobial Stewardship Team Staff member, Centre for Quality Improvement and Patient Safety Sunnybrook Health Sciences Centre Assistant Professor, Department of Medicine, University of Toronto Medical Research: What is the background for this study? What are the main findings? Dr. Leis: Overuse of urinary catheters leads to significant morbidity among hospitalized patients.  In most hospitals, discontinuation of urinary catheters relies on individual providers remembering to re-assess whether patients have an ongoing reason for a urinary catheter.  We engaged all of the attending physicians to agree on the appropriate reasons for leaving a urinary catheter in place and developed a medical directive for nurses to remove all urinary catheters lacking these indications.  This nurse-led intervention resulted in a significant reduction in urinary catheter use and catheter-associated urinary tract infections, compared with wards that continued to rely on usual practice. (more…)
Author Interviews, Infections, Microbiome, Urinary Tract Infections / 29.06.2015 Interview with: Jeffrey P. Henderson, M.D., Ph.D. Assistant Professor of Medicine and Molecular Microbiology Center for Women's Infectious Diseases Research Division of Infectious Diseases and Robin Shields-Cutler, Ph.D Ph.D. Student, Molecular Microbiology and Microbial Pathogenesis Washington University School of Medicine St. Louis, Missouri Medical Research: What is the background for this study? Response: Increasing antibiotic resistance, together with an appreciation that many patients are particularly susceptible to recurrent Urinary Tract Infections UTIs following antibiotic therapy, motivated interest in the events that occur during early stages of UTI pathogenesis. Abundant evidence suggests that uropathogenic E.coli must obtain iron from human hosts in order to cause a clinical infection. Early in infection, human cells secrete a protein called siderocalin that is known to limit bacterial growth by sequestering iron. This protein is detectable in the urine of Urinary Tract Infections patients. Medical Research: What are the main findings? Response: We obtained urine from a diverse panel of healthy volunteers, inoculated them individually with a uropathogenic E.coli strain, and monitored growth in the presence and absence of a fixed amount of siderocalin. Siderocalin exhibited a remarkably wide range of activity between individuals. We traced this variation back to differences in urinary pH and to phenolic urinary metabolites. We could significantly facilitate siderocalin’s antibacterial activity in urine by alkalinizing it above 6.5 and adding phenolic metabolites. The metabolites that potentiate siderocalin’s antibacterial effect have been linked to dietary sources such as coffee, tea, and berries. Some of these compounds may further derive from the actions of gut microbes on dietary phenols. The functional basis for these compounds’ properties seems to arise from siderocalin’s ability to use them as molecular grips that chelate iron ions in a form that is difficult for bacteria to access. From the pathogen perspective, we found that enterobactin, a molecule secreted by E.coli, acts as a microbial countermeasure to urinary siderocalin. Adding a drug-like inhibitor to urine that blocks enterobactin biosynthesis greatly increased siderocalin’s antibacterial effect. (more…)
AHRQ, Antibiotic Resistance, Author Interviews, Baylor College of Medicine Houston, JAMA, Urinary Tract Infections / 25.06.2015

Barbara W. Trautner, MD, PhD Houston Veterans Affairs Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakey Veterans Affairs Medical Center Section of Infectious Diseases, Department of Medicine Baylor College of Medicine, Houston, Interview with: Barbara W. Trautner, MD, PhD Houston Veterans Affairs Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakey Veterans Affairs Medical Center Section of Infectious Diseases Department of Medicine Baylor College of Medicine, Houston, Texas Medical Research: What is the background for this study? What are the main findings? Dr. Trautner: Reducing antimicrobial overuse, or antimicrobial stewardship, is a national imperative. If we fail to optimize and limit use of these precious resources, we may lose effective antimicrobial therapy in the future. CDC estimates that more than $1 billion is spent on unnecessary antibiotics annually, and that drug-resistant pathogens cause 2 million illnesses and 23,000 deaths in the U.S. each year. The use of antibiotics to treat asymptomatic bacteriuria (ASB) is a significant contributor to antibiotic overuse in hospitalized and nursing home patients, especially among patients with urinary catheters. In catheterized patients, ASB is very often misdiagnosed and treated as catheter-associated urinary tract infection (CAUTI). Therefore, we designed the “Kicking CAUTI: The No Knee-Jerk Antibiotics Campaign intervention” to reduce overtreatment of ASB and to reduce the confusion about distinguishing CAUTI from asymptomatic bacteriuria. This study evaluated the effectiveness of the Kicking CAUTI intervention in two VAMCs between July 2010 and June 2013. The primary outcomes were urine cultures ordered per 1,000 bed-days (inappropriate screening for ASB) and cases of ASB receiving antibiotics (overtreatment). The study included 289,754 total bed days, with 170,345 at the intervention site and 119,409 at the comparison site. Through this campaign, researchers were able to dramatically decrease the number of urine cultures ordered. At the intervention site, the total number of urine cultures ordered decreased by 71 percent over the course of the intervention. Antibiotic treatment of asymptomatic bacteriuria decreased by more than 75 percent during the study. No significant changes occurred at the comparison site over the same time period. Failure to treat catheter-associated urinary tract infection when indicated did not increase at either site. (more…)
AHRQ, Author Interviews, Electronic Records, Urinary Tract Infections / 26.08.2014

Craig A Umscheid, MD, MSCE, FACP Assistant Professor of Medicine and Epidemiology Director, Center for Evidence-based Practice Medical Director, Clinical Decision Support Chair, Department of Medicine Quality Committee Senior Associate Director, ECRI-Penn AHRQ Evidence-based Practice Center University of Pennsylvania, Philadelphia, PA Interview with: Craig A Umscheid, MD, MSCE, FACP Assistant Professor of Medicine and Epidemiology Director, Center for Evidence-based Practice Medical Director, Clinical Decision Support Chair, Department of Medicine Quality Committee Senior Associate Director, ECRI-Penn AHRQ Evidence-based Practice Center University of Pennsylvania, Philadelphia, PA 19104 Medical Research: What are the main findings of the study? Dr. Umscheid: We found that targeted automated alerts in electronic health records significantly reduce urinary tract infections in hospital patients with urinary catheters. In addition, when the design of the alert was simplified, the rate of improvement dramatically increased. Approximately 75 percent of urinary tract infections acquired in the hospital are associated with a urinary catheter, which is a tube inserted into the bladder through the urethra to drain urine.  According to the Centers for Disease Control and Prevention, 15 to 25 percent of hospitalized patients receive urinary catheters during their hospital stay. As many as 70 percent of urinary tract infections in these patients may be preventable using infection control measures such as removing no longer needed catheters resulting in up to 380,000 fewer infections and 9,000 fewer deaths each year. Our study has two crucial, applicable findings.  First, electronic alerts do result in fewer catheter-associated urinary tract infections. Second, the design of the alerts is very important. By making the alert quicker and easier to use, we saw a dramatic increase in the number of catheters removed in patients who no longer needed them. Fewer catheters means fewer infections, fewer days in the hospital, and even, fewer deaths. Not to mention the dollars saved by the health system in general. In the first phase of the study, two percent of urinary catheters were removed after an initial “off-the-shelf” electronic alert was triggered (the stock alert was part of the standard software package for the electronic health record). Hoping to improve on this result in a second phase of the study, we developed and used a simplified alert based on national guidelines for removing urinary catheters that we previously published with the CDC. Following introduction of the simplified alert, the proportion of catheter removals increased more than seven-fold to 15 percent. The study also found that catheter associated urinary tract infections decreased from an initial rate of .84 per 1,000 patient days to .70 per 1,000 patient-days following implementation of the first alert and .50 per 1,000 patient days following implementation of the simplified alert. Among other improvements, the simplified alert required two mouse clicks to submit a remove-urinary-catheter order compared to seven mouse clicks required by the original alert. The study was conducted among 222,475 inpatient admissions in the three hospitals of the University of Pennsylvania Health System between March 2009 and May 2012. In patients’ electronic health records, physicians were prompted to specify the reason (among ten options) for inserting a urinary catheter. On the basis of the reason selected, they were subsequently alerted to reassess the need for the catheter if it had not been removed within the recommended time period based on the reason chosen. (more…)
Author Interviews, Urinary Tract Infections, Urology / 23.08.2014

Steve J. Hodges MD Associate Professor, Department of Urology Wake Forest University School of Medicine Medical Center Blvd, Winston-Salem, Interview with: Steve J. Hodges MD Associate Professor, Department of Urology Wake Forest University School of Medicine Medical Center Blvd, Winston-Salem, NC Medical Research: What are the main findings of this study? Dr. Hodges: The main findings of this study were that skin irritants (typically urine) may cause vulvitis in prepubertal girls, which leads to an alteration of their perineal microbiome, with increased colonization by uropathogenic bacteria, increasing the risk of UTI. (more…)
Author Interviews, Infections, Outcomes & Safety, Pharmacology, Urinary Tract Infections / 28.02.2014

Dr. Jerome A. Leis, MD, MSc Sunnybrook Health Sciences Centre Toronto, ON, M4N 3M5, Interview with: Dr. Jerome A. Leis, MD, MSc Sunnybrook Health Sciences Centre Toronto, ON, M4N 3M5, Canada What are the main findings of the study? Dr. Leis: We know that positive urine cultures from patients who lack signs and symptoms of urinary tract infection are a trigger FOR unnecessary antibiotic prescriptions in hospitals. This problem has not improved despite many educational initiatives.  We identified a subset of patients in our hospital where only 2% of all urine specimens sent to the laboratory were associated with symptomatic infection and decided to no longer routinely report positive results from these specimens on the electronic medical record, unless a special telephone request was made.  We found that with this simple change, unnecessary antibiotic prescriptions declined markedly and this did not require any education of care providers. Most importantly, based on our safety audits, patients who had a urinary tract infection all received appropriate treatment. (more…)
Author Interviews, NEJM, Urinary Tract Infections / 14.11.2013

Thomas M. Hooton M.D. Associate Chief of Staff, Medical Service, Miami VA Healthcare System Professor of Clinical Medicine and Vice Chair for VA Affairs, Department of Medicine, UMSOM Clinical Director, Division of Infectious Diseases, Interview with: Thomas M. Hooton M.D. Professor of Medicine and Vice Chair for VA Affairs, University of Miami Miller School of Medicine Associate Chief of Staff, Medical Service, Miami VA Healthcare System Clinical Director, Division of Infectious Diseases What are the main findings of the study? Dr. Hooten: The main findings from this study are: ·        Voided urine colony counts of E. coli as low as 101 to 102 cfu/mL are highly sensitive and specific for their presence in bladder urine in symptomatic women (growth of bacteria in bladder urine is the gold standard for the etiology of UTI). Moreover, even when E. coli is found along with other mixed flora in voided urine, it should not be considered a contaminant since it likely represents true bladder infection. ·        On the other hand, enterococci and Group B streptococci, which are frequently isolated from voided urine, are rarely isolated from paired catheter specimens, suggesting that these organisms only rarely cause acute uncomplicated cystitis. In our study, E. coli frequently grew from the urines of these women and is the likely cause for UTI symptoms in such episodes. ·        Organisms usually considered contaminants, such as lactobacilli, occasionally grow from catheter urines, but they are rarely found alone with pyuria, suggesting that these bacteria rarely cause acute uncomplicated cystitis. ·        The etiology of a quarter of acute uncomplicated cystitis episodes is unknown.  It is possible that some of these women have E. coli urethritis, which has been documented in some women with UTI symptoms, but we did not do further studies to evaluate this. It is possible also that enterococci and Group B streptococci may also cause urethritis, but there is no published evidence of this in young women with UTI symptoms. ·        Although voided urine cultures growing mixed flora are common in women with acute cystitis, true polymicrobic cystitis, as determined by sampling bladder urine, appears to be rare in this population. (more…)
Author Interviews, CMAJ, Infections, Outcomes & Safety, Urinary Tract Infections / 18.09.2013 Interview with: Mohamad Fakih, MD, MPH Medical Director, Infection Prevention and Control St John Hospital and Medical Center What are the main findings of the study? Dr. Fakih: Urinary catheters are commonly used in the hospital.  Although they help in the management of the sickest patients, they also present a risk for infection and other harms to the patient. The Centers for Medicaid and Medicare Services (CMS) have made catheter associated urinary tract infections (CAUTI) publicly reportable, and no longer reimburse hospitals for these infections if they occur in hospital setting. The definition of CAUTI is based on the surveillance definition of the National Healthcare Safety Network (NHSN) by the Centers for Disease Control and Prevention (CDC). We looked at clinician practice, including the Infectious Diseases specialist’s impression and compared them to the NHSN definition. We found a significant difference between what clinicians think is a urinary catheter infection and give antibiotics for it compared to the NHSN definition. The NHSN definition predicted clinical infection by the Infectious Diseases specialist in only about a third of the cases. We also found that Infectious Disease specialists considered patients to have true CAUTI in only half of what clinicians treated as CAUTI. (more…)