Evaluation of infectious diseases and clinical microbiology specialists' preferences for hand hygiene: analysis using the multi-attribute utility theory and the analytic hierarchy process methods.

BACKGROUND: Hand hygiene is one of the most effective attempts to control nosocomial infections, and it is an important measure to avoid the transmission of pathogens. However, the compliance of healthcare workers (HCWs) with hand washing is still poor worldwide. Herein, we aimed to determine the best hand hygiene preference of the infectious diseases and clinical microbiology (IDCM) specialists to prevent transmission of microorganisms from one patient to another. METHODS: Expert opinions regarding the criteria that influence the best hand hygiene preference were collected through a questionnaire via face-to-face interviews. Afterwards, these opinions were examined with two widely used multi-criteria decision analysis (MCDA) methods, the Multi-Attribute Utility Theory (MAUT) and the Analytic Hierarchy Process (AHP). RESULTS: A total of 15 IDCM specialist opinions were collected from diverse private and public hospitals located in Izmir, Turkey. The mean age of the participants was 49.73 ± 8.46, and the mean experience year of the participants in their fields was 17.67 ± 11.98. The findings that we obtained through two distinct decision making methods, the MAUT and the AHP, suggest that alcohol-based antiseptic solution (ABAS) has the highest utility (0.86) and priority (0.69) among the experts' choices. CONCLUSION: In conclusion, the MAUT and the AHP, decision models developed here indicate that rubbing the hands with ABAS is the most favorable choice for IDCM specialists to prevent nosocomial infection.

Relative fecal abundance of extended-spectrum-ß-lactamase-producing Escherichia coli strains and their occurrence in urinary tract infections in women.

Extended-spectrum-beta-lactamase (ESBL)-producing Escherichia coli (ESBL E. coli) strains are of major concern because few antibiotics remain active against these bacteria. We investigated the association between the fecal relative abundance (RA) of ESBL-producing E. coli (ESBL-RA) and the occurrence of ESBL E. coli urinary tract infections (UTIs). The first stool samples passed after suspicion of UTI from 310 women with subsequently confirmed E. coli UTIs were sampled and tested for ESBL-RA by culture on selective agar. Predictive values of ESBL-RA for ESBL E. coli UTI were analyzed for women who were not exposed to antibiotics when the stool was passed. ESBL E. coli isolates were characterized for ESBL type, phylogroup, relatedness, and virulence factors. The prevalence of ESBL E. coli fecal carriage was 20.3%, with ESBL E. coli UTIs being present in 12.3% of the women. The mean ESBL-RA (95% confidence interval [CI]) was 13-fold higher in women exposed to antibiotics at the time of sampling than in those not exposed (14.3% [range, 5.6% to 36.9%] versus 1.1% [range, 0.32% to 3.6%], respectively; P < 0.001) and 18-fold higher in women with ESBL E. coli UTI than in those with another E. coli UTI (10.0% [range, 0.54% to 100%] versus 0.56% [range, 0.15% to 2.1%[, respectively; P < 0.05). An ESBL-RA of <0.1% was 100% predictive of a non-ESBL E. coli UTI. ESBL type, phylogroup, relatedness, and virulence factors were not found to be associated with ESBL-RA. In conclusion, ESBL-RA was linked to the occurrence of ESBL E. coli UTI in women who were not exposed to antibiotics and who had the same clone of E. coli in urine samples and fecal samples. Especially, a low ESBL-RA appeared to be associated with a low risk of ESBL E. coli infection.

Vancomycin versus linezolid in the treatment of methicillin-resistant Staphylococcus aureus meningitis in an experimental rabbit model.

BACKGROUND: The aim of this study was to compare the antibacterial efficacy of vancomycin and linezolid in a rabbit model of methicillin-resistant Staphylococcus aureus (MRSA) meningitis. MATERIAL/METHODS: Meningitis was induced by intracisternal inoculation of ATCC 43300 strain. After 16 h incubation time and development of meningitis, the vancomycin group received vancomycin 20 mg/kg every 12 h. The linezolid-10 and linezolid-20 groups received linezolid in 10 and 20 mg/kg dosages every 12 h, respectively. The control group did not receive any antibiotics. Cerebrospinal fluid bacterial counts were measured at the end of 16-h incubation time and at the end of 24-h treatment. RESULTS: Bacterial counts were similar in all groups at 16 h. At the end of treatment the decrease in bacterial counts in the vancomycin group was approximately 2 logs higher than the linezolid-20 group (p>0.05) and approximately 4 logs higher than in the linezolid-10 group (p: 0.037) (Vancomycin group: -2.860 ± 4.495 versus Linezolid-20: -0.724 ± 4.360, versus Linezolid-10: 1.39 ± 3.37). Full or partial bacteriological response was higher in vancomycin versus linezolid-10 (p: 0.01), but not vancomycin versus linezolid-20 or linezolid-10 versus-linezolid-20 groups. CONCLUSIONS: Our results suggest that linezolid is not statistically inferior to vancomycin in the treatment of MRSA meningitis in an experimental rabbit model in 20 mg/kg q12 h dosage; however, it is inferior in 10 mg/kg q12 h dosage. Additional data should gathered to confirm these findings in advance of clinical trials to assess efficacy in humans.

[Evaluation of primary health care physicians' knowledge on rational antibiotic use]. / Saglik ocaklarinda çalisan hekimlerinin akilci antibiyotik kullanimi ile ilgili bilgi düzeylerinin degerlendirilmesi.

Physicians' prescribing practices impact greatly on rational drug use and expenditure. The aim of this cross-sectional study is to determine primary health care physicians' knowledge on rational antibiotic use in Izmir. A total of 475 physicians from primary health care centres (response rate: 100%) participated in this study. Prescription information of physicians was collected with a standardized questionnaire. It was detected that 48.4% of the physicians have prescribed antibiotics in one of each three (30%) prescriptions, while 19.4% in one of each five prescriptions. The most frequent reason for antibiotic prescription was the upper respiratory tract infections (URTI). The rate of prescribing antibiotics for URTI according to the results of throat culture or blood count was 11.8%. The most commonly prescribed antibiotics were penicillins for URTI, quinolones for urinary tract infections and trimethoprim-sulphametoxazole for gastrointestinal tract infections. The rate of appropriate prescribing practices was high among physicians in the age group 25-29 in comparison to older age groups (X2: 14.855; p: 0.01). Only 32.2% of the physicians correctly indicated the antibiotics with drawbacks in newborn period. 6.5% of the participants gave no correct antibiotic choices for any of the infections indicated. It was stated by 89.6% of the participants that they would benefit from continuous education on rational antibiotic use. The data obtained revealed that primary health care physicians who had high antibiotic prescription rates, lacked information about rational antibiotic use and continuous professional education and development programmes related to this topic is a prerequisite.

Epidemiology of multidrug-resistant bacteria in patients with long hospital stays.

OBJECTIVE: To determine rates of colonization with multidrug-resistant (MDR) bacteria (ie, methicillin-resistant Staphylococcus aureus [MRSA], vancomycin-resistant Enterococcus [VRE], extended-spectrum beta -lactamase [ESBL]-producing Enterobacteriaceae, and Acinetobacter baumannii) after prolonged hospitalization and to assess the yield of surveillance cultures and variables associated with colonization with MDR bacteria. DESIGN: Prospective observational cohort study conducted from February 6 to May 26, 2006. METHODS: All patients who spent more than 30 days in our university hospital (Paris, France) were included. Rectal and nasal swab samples obtained during day 30 screening were examined for MRSA, VRE, ESBL-producing Enterobacteriaceae, and A. baumannii. RESULTS: Of 470 eligible patients, 439 had surveillance culture samples available for analysis, including 51 patients (11.6%) with a history of colonization or infection due to 1 or more types of MDR bacteria (MRSA, recovered from 35 patients; ESBL-producing Enterobacteriaceae, from 16 patients; A. baumannii, from 6 patients; and VRE, from 0 patients) and 37 patients (9.5% of the 388 patients not known to have any of the 4 MDR bacteria before day 30 screening) newly identified as colonized by 1 or more MDR bacteria (MRSA, recovered from 20 patients; ESBL-producing Enterobacteriaceae, from 16 patients; A. baumannii, from 1 patient; and VRE, from 0 patients). A total of 87 (19.8%) of 439 patients were identified as colonized or infected with MDR bacteria at day 30. Factors that differed between patients with and without MRSA colonization included age, McCabe score, comorbidity score, receipt of surgery, and receipt of fluoroquinolone treatment. Patients with ESBL-producing Enterobacteriaceae colonization were younger than patients with MRSA colonization. CONCLUSIONS: Differences in the variables associated with MRSA colonization and ESBL-producing Enterobacteriaceae colonization suggest differences in the epidemiology of these 2 organisms. Day 30 screening resulted in a 72.5% increase in the number of patients identified as colonized with at least 1 type of MDR bacteria.

Accuracy of consultations performed by infectious diseases trainees and factors associated with adherence to them.

OBJECTIVES: Infectious diseases (ID) trainees should be familiar with duties relevant to consultation practice. In this study we aimed to analyze the ID trainee night/weekend shift consultation process in terms of consultant characteristics, types of recommendations, and compliance with recommendations. METHODS: All consultations performed by ID trainees on the night shift and at the weekends between 10 June and 10 August 2004 were recorded prospectively on standardized forms. Infectious diseases specialists assessed the appropriateness of recommendations the day after each consultation. Recommendations were considered complied with if they were carried out within 72 hours of the consultation. RESULTS: Of 440 consultations, 163 were for a clinically diagnosed infection (without specific antibiotic request) and 79 were for treatment continuation. Overall, 152 consultations were for requesting specific antibiotic(s), and 327 antibiotics were recommended or approved in 270 consultations. Eight of these recommendations were inappropriate. Overall compliance to ID recommendations was 75.3% (418/555). In univariate analysis, the compliance rate to non-treatment recommendations (microbiologic cultures, radiology, biochemistry, etc.) was found to be lower than the rate of compliance to antibiotic recommendations (186/308 vs. 232/247, p<0.05). In addition, compliance to recommendations made by the first-year trainees was lower than to the recommendations made by the other trainees. In logistic regression analysis only recommendations including antibiotic treatment was associated with higher compliance (p=0.0001, odds ratio=10.2, 95% CI=5.7-18.3). CONCLUSIONS: ID trainees are capable of evaluating patients and recommending appropriate antibiotics. Methodologies to improve the compliance to non-treatment-based recommendations and optimizing antibiotic selection seem to be necessary.

Rifampicin+ceftriaxone versus vancomycin+ceftriaxone in the treatment of penicillin- and cephalosporin-resistant pneumococcal meningitis in an experimental rabbit model.

This study was planned to compare the efficacy of ceftriaxone+vancomycin with ceftriaxone+rifampicin in a rabbit model of penicillin and cephalosporin-resistant Streptococcus pneumoniae meningitis. Meningitis was induced by intracisternal inoculation of S. pneumoniae. After 18 h of incubation, Group 1 was given saline solution (control group), whilst Groups 2 and 3 were given ceftriaxone+vancomycin and ceftriaxone+rifampicin, respectively. Cerebrospinal fluid bacterial concentrations were measured at 0, 2, 12, 14 and 24 h after therapy was initiated. In the control group, bacterial growth was present at all time points, whereas no growth was observed in either the ceftriaxone+vancomycin group or the ceftriaxone+rifampicin group after 2 h of therapy. Ceftriaxone+rifampicin was found to be as effective as ceftriaxone+vancomycin in the treatment of penicillin-resistant S. pneumoniae meningitis in experimental rabbit model.

Meningitis due to methicillin-resistant Staphylococcus aureus (MRSA): review of 10 cases.

We evaluated retrospectively, 10 MRSA meningitis cases in our hospital that occurred between January 1999 and June 2004. All were post-neurosurgical and were considered to have hospital-acquired meningitis. Fever, leukocytosis, variable conscious levels were the most common findings. Six patients were treated with regimens including teicoplanin, and four with vancomycin. Mean duration of treatment was 23.5+/-18.8 days (range, 3-60 days). One patient died. In cases of MRSA meningitis, intravenous vancomycin is the mainstay of therapy. However, six of these 10 patients were successfully treated with regimens including teicoplanin, suggesting that this agent may be an alternative to vancomycin in the therapy of these cases.

Intralesional epidermal growth factor for diabetic foot wounds: the first cases in Turkey.

BACKGROUND: Intralesional recombinant epidermal growth factor (EGF) was produced in the Centre for Genetic Engineering and Biotechnology (CIGB), Cuba, in 1988 and licensed in 2006. Because it may accelerate wound healing, it is a potential new treatment option in patients with a diabetic foot wound (whether infected or not) as an adjunct to standard treatment (i.e. debridement, antibiotics). We conducted the initial evaluation of EGF for diabetic foot wounds in Turkey. METHODS: We enrolled 17 patients who were hospitalized in various medical centers for a foot ulcer and/or infection and for whom below the knee amputation was suggested to all except one. All patients received 75 µg intralesional EGF three times per week on alternate days. RESULTS: The appearance of new granulation tissue on the wound site (≥75%) was observed in 13 patients (76%), and complete wound closure was observed in 3 patients (18%), yielding a 'complete recovery' rate of 94%. The most common side effects were tremor (n=10, 59%) and nausea (n=6, 35%). In only one case,a serious side effect requiring cessation of EGF treatment was noted. That patient experienced severe hypotension at the 16th application session, and treatment was discontinued. At baseline, a total of 21 causative bacteria were isolated from 15 patients, whereascultures were sterile in two patients. The most frequently isolated species was Pseudomonas aeruginosa. CONCLUSION: Thus, this preliminary study suggests that EGF seems to be a potential adjunctive treatment option in patients with limb-threatening diabetic foot wounds.

Agreement among healthcare professionals in ten European countries in diagnosing case-vignettes of surgical-site infections.

OBJECTIVE: Although surgical-site infection (SSI) rates are advocated as a major evaluation criterion, the reproducibility of SSI diagnosis is unknown. We assessed agreement in diagnosing SSI among specialists involved in SSI surveillance in Europe. METHODS: Twelve case-vignettes based on suspected SSI were submitted to 100 infection-control physicians (ICPs) and 86 surgeons in 10 European countries. Each participant scored eight randomly-assigned case-vignettes on a secure online relational database. The intra-class correlation coefficient (ICC) was used to assess agreement for SSI diagnosis on a 7-point Likert scale and the kappa coefficient to assess agreement for SSI depth on a three-point scale. RESULTS: Intra-specialty agreement for SSI diagnosis ranged across countries and specialties from 0.00 (95%CI, 0.00-0.35) to 0.65 (0.45-0.82). Inter-specialty agreement varied from 0.04 (0.00-0.62) in to 0.55 (0.37-0.74) in Germany. For all countries pooled, intra-specialty agreement was poor for surgeons (0.24, 0.14-0.42) and good for ICPs (0.41, 0.28-0.61). Reading SSI definitions improved agreement among ICPs (0.57) but not surgeons (0.09). Intra-specialty agreement for SSI depth ranged across countries and specialties from 0.05 (0.00-0.10) to 0.50 (0.45-0.55) and was not improved by reading SSI definition. CONCLUSION: Among ICPs and surgeons evaluating case-vignettes of suspected SSI, considerable disagreement occurred regarding the diagnosis, with variations across specialties and countries.

Short-term effect of antibiotic control policy on the usage patterns and cost of antimicrobials, mortality, nosocomial infection rates and antibacterial resistance.

OBJECTIVES: In 2003 Turkish government released a new budget application instruction for regulating the usage of parenteral antibiotics inside and outside of the hospitals. In this study it was aimed to evaluate the effect of this instruction on the overall usage of restricted antibiotics, their cost, overall mortality, bacterial resistance patterns and nosocomial infection rates in intensive care units (ICUs) of our setting for March-October 2002 and March-October 2003 periods. METHODS AND RESULTS: Overall daily defined dose/1000 patients/day of restricted drugs decreased, whereas unrestricted drugs increased significantly after the instruction. The cost of all analysed drugs in 2003 period was 540,303USD (-19.6%) less than 2002 period. Nosocomial infection rates in ICUs decreased significantly (p<0.05). When all microbiologically confirmed nosocomial bacteremia cases during the study period were analysed, amoxycilline/clavulanate, ciprofloxacin, cefuroxime, cefotaxime, piperacilline/tazobactam resistance and ESBL rate in Klebsiella pneumoniae decreased significantly (p<0.05). Amikacin resistance in Escherichia coli and Acinetobacter baumannii increased significantly (p<0.05). CONCLUSION: Antibiotic control is one of the most important and significant ways to save money, and to prevent antibacterial resistance.

Irrational use of antibiotics among university students.

STUDY OBJECTIVE: The aim of the presented study was to evaluate the knowledge, attitude and behaviour of antibiotic usage in the student groups of a University in a country where the antibiotics are taken without prescriptions. DESIGN: Out of 5345 students (excluding those from the Faculty of Medicine) of Ege University, 678 were chosen by systematic sampling methods. The sampling group was divided into two groups. Group A included students from the Faculties of Pharmacy and Dentistry and Group B was composed of students of all other faculties. A questionnaire was used. MAIN RESULTS: The mean age was 21.0+/-3.0 and 58% were females. The aim of antibiotic use for common cold was 83.1% (P>0.05) and, to decrease fever was 32.1% (P<0.05) in both Groups. In Group A 36.1% and in Group B 44.9% of the respondents started antibiotics by themselves when they were ill (P>0.05) although 89.1% of both groups agree that antibiotics should be started with doctors' prescription. During their last infection in Group A 11.7% and in Group B 27.3% of the respondents used the same antibiotic as previously prescribed by their doctors and the use of antibiotics as advised by the doctors during their last infection was 50.8% in Group A and 35.3% in Group B. CONCLUSIONS: The use of antibiotics are found to be irrational among university students. National education programmes about the dangers of irrational antibiotic use and restriction of antibiotics without prescriptions should be the priority. This study indicated that knowledge regarding antibiotics cannot be evaluated alone since it did not always correlate with behaviour.