Clinical Significance and Microbiological Characteristics of Staphylococcus lugdunensis in Cutaneous Infections.

Background/Objectives:Staphylococcus lugdunensis is a coagulase-negative staphylococcus (CoNS) commonly found on human skin. Unlike other CoNS, S. lugdunensis has a notable potential to cause severe infections comparable to Staphylococcus aureus. This study aimed to characterize the clinical and microbiological profile of patients with S. lugdunensis skin infections at a single center. Methods: We conducted a retrospective analysis of patient records from the Dermatology Department of the University Hospital of Heraklion, Greece, covering the period from January 2014 to January 2024. Patients' clinical presentations, demographics, infection sites, comorbidities, prior infections, antimicrobial treatments, and therapeutic responses were examined. Specimens were collected, transported, and processed according to standardized microbiological protocols. Bacterial identification and antibiotic susceptibility testing were performed using the Vitek 2 automated system and MALDI-TOF MS, with results interpreted according to Clinical and Laboratory Standards Institute (CLSI) criteria. Results: A total of 123 skin specimens positive for S. lugdunensis were analyzed. The cohort comprised 62 males (50.4%) and 61 females (49.6%), with a mean age of 40.24 ± 20.14 years. Most specimens were collected from pus (84%), primarily from below the waist (66.7%). Hidradenitis suppurativa (26%) was the most common condition associated with S. lugdunensis, followed by folliculitis, abscesses, ulcers, cellulitis, and acne. Co-infections with other bacteria were noted in 49.6% of cases, and 25.2% of infections were nosocomially acquired. The majority of patients (65%) received systemic antibiotics, predominantly amoxicillin/clavulanic acid, cefuroxime axetil, and doxycycline, with a cure rate of 100%. All isolates were susceptible to several antibiotics, though resistance to penicillin (28.5%) and clindamycin (36%) was observed. Conclusions:S. lugdunensis is a significant pathogen in skin infections, capable of causing severe disease. The high cure rate demonstrates the effectiveness of appropriate antibiotic therapy. Continued monitoring and antimicrobial stewardship are essential to manage resistance and ensure effective treatment.

Antimicrobial Resistance Trends in Hidradenitis Suppurativa Lesions.

Background/Objectives: Antibiotic (AB) therapy is the first step in managing hidradenitis suppurativa (HS). Knowledge of the local patterns of antimicrobial resistance is paramount for the appropriate selection of antimicrobials. This study aimed to assess the occurrence of antibiotic resistance in patients with HS. Methods: A cross-sectional study was conducted on 103 patients with HS seen at the Dermatology Department at the University Hospital of Heraklion, Heraklion, Crete, Greece, from January 2019 to December 2023, who were not on any antibiotics in the last three months. Results: A total of 103 patients with HS participated in this study. Purulent material from 139 skin lesions of these patients was swabbed, and 79.86% (111/139) tested positive for bacteria. Gram-positive isolates accounted for 73%, whereas Gram-negative isolates comprised 27%. Among the isolates, 85.1% were aerobes, and 14.9% were anaerobic. The most common bacterial families isolated were Staphylococcaceae (48.27%), Enterobacteriaceae (14.94%), and Streptococcaceae (6.89%). The antibiogram profiles of bacterial cultures revealed a 57.1% resistance to levofloxacin and a 53.3% resistance to penicillin in Staphylococcus lugdunensis, whereas Staphylococcus aureus showed a 76.9% resistance to penicillin and a 58.3% resistance to fusidic acid. High resistance rates of 63.5% for tigecycline, 63.3% for ampicillin, and 40.5% for colistin were observed for Gram-negative isolates. Resistances of 62.5%, 61.5%, and 53.8% to erythromycin, clindamycin, and penicillin, respectively, were observed in the anaerobes. Conclusions: Patients with HS displayed considerable resistance to bacterial proliferation. The revised therapeutic guidelines for HS should incorporate the latest insights into bacterial antibiotic resistance.

Scenarios for Assessing Leadership Behaviors of Mid-level Managers in the Greek National Health System Through the Lens of Servant Leadership Theory: A Pilot Study in the Hospital Cluster of North Attica.

This study aimed to develop a scenario-based questionnaire for evaluating medium-level leadership behaviors within the Greek National Healthcare System (NHS), drawing upon the principles of servant leadership theory. Data for this pilot study were collected in the first quarter of 2019, using a sample of 33 (22.9% of all medium-level managerial positions) medium-level managers from the Greek NHS hospital cluster located in North Attica. To assess managerial behaviors, an ordinal scale was employed, revealing non-normal data distributions. Consequently, our analysis involved presenting descriptive statistics, utilizing non-parametric tests to explore distinctions in managerial behaviors, and conducting thematic analysis of responses to open-ended questions, with frequencies and relative frequencies of each theme meticulously recorded. Overall, our findings indicate that, in most cases, managers exhibited positive behaviors toward their employees, regardless of whether the outcomes were positive, negative, or unknown. Positive behaviors towards the administration were comparatively rare. Significant differences were observed, highlighting that managers were more inclined to exhibit positive behaviors when the outcome was known, particularly in scenarios involving employee management. Within each scenario, behavioral patterns varied, with managers demonstrating a propensity to take credit for employee success in positive outcomes but distancing themselves from negative outcomes when reporting to the administration. Furthermore, the survey responses underscored the prevalence of positive attitudes regarding accountability and stewardship, with stewardship showing a positive correlation with scenario-based behaviors. Finally, our study brought to light several challenges in the management of the Greek NHS, including the absence of comprehensive managerial evaluation, the lack of meritocracy, regulatory deficiencies, and a shortage of leadership skills among current managers. These findings emphasize the importance of scenario-based assessments for Greek hospital managers, as they can help connect managerial behaviors to stewardship, accountability, and skills, ultimately contributing to the enhancement of leadership within the Greek NHS.

Antimicrobial resistance of genital mycoplasmas recovered from nonpregnant women in Greece: trends over the last 15 years.

Aim: To study antimicrobial susceptibilities of genital mycoplasmas recovered from endocervical samples of reproductive-age, nonpregnant women (n = 8,336). Materials & methods: For isolation and susceptibility testing, the Mycoplasma IST2 kit was used. Results: As many as 2093 samples were positive for mycoplasmas. The vast majority (>96%) of Ureaplasma urealyticum remained susceptible to tetracycline, doxycycline, josamycin and pristinamycin, whereas susceptibility rates to azithromycin and fluoroquinolones were significantly decreased. Mycoplasma hominis exhibited high susceptibility rates to doxycycline, pristinamycin and josamycin (98.1-100%), while susceptibilities to tetracycline and fluoroquinolones were considerably lower. Conclusion: Doxycycline remained highly potent for treating mycoplasmas; nevertheless, susceptibilities to other antimicrobials were significantly diminished.

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A Six-Year Retrospective Study of Microbiological Characteristics and Antimicrobial Resistance in Specimens from a Tertiary Hospital's Surgical Ward.

Surgery has revolutionized the practice of medicine by allowing the treatment of conditions amenable to conservative medical management with some of them pathophysiologically involving the prevalence of pathogenic microorganisms. On the other hand, infections such as surgical site infections or urinary tract infections may complicate patients hospitalized in surgical wards leading to considerable morbidity, mortality, and increased healthcare-associated costs. The aim of this study was to present the microbiological characteristics and antimicrobial resistance of all isolates identified in microbiological specimens from a surgical ward of a tertiary hospital in Greece during a six-year period. Only specimens that yielded at least one microorganism were included in the analysis. In total, 1459 strains in 789 positive cultures were isolated. The most common sample sent to the microbiology department was pus from surgical wounds. The most common pathogens among all 1459 strains isolated were Enterobacterales at 33% (n = 482), however, the most common genus was Enterococcus at 22.3% (n = 326). Antimicrobial resistance against third-generation cephalosporins was 23% (n = 111/482) among Enterobacterales, while, the rate of vancomycin-resistant enterococci (VRE) was 18.5% (n = 60/324) among Enterococcus species and was increasing in the last years of the study. Antimicrobial resistance of Acinetobacter baumannii to carbapenems was 68.8% (n = 11/16), which was lower than the corresponding rate in other wards in Greece. The antimicrobial resistance rates noted herein raise questions regarding the appropriateness of currently suggested antimicrobials in guidelines and imply that a revision could be required. Practicing clinicians should always be aware of local microbiological data that allow the selection of appropriate antimicrobials for the management of infections. Finally, the increasing rates of VRE noted herein mandate further actions from the point of infection control and antimicrobial stewardship.

Pharmacokinetic/Pharmacodynamic Determination of Systemic MIC Breakpoints for Intermittent, Extended, and Continuous Infusion Dosage Regimens of Mecillinam.

Intravenous mecillinam has been used for the treatment of urosepsis at several dosing regimens, including a dose of 1,000 mg three times a day (TID). In the current pharmacokinetic/pharmacodynamic (PK/PD) study, we analyzed intermittent, extended, and continuous infusion regimens of mecillinam to provide dosage recommendations to treat infections caused by Enterobacterales exhibiting relatively higher mecillinam MICs than the wild-type strains. Monte Carlo simulation studies indicated that regimens of 1,000 mg TID and 1,000 to 1,200 mg four times a day (QID) are efficacious against wild-type and extended-spectrum ß-lactamase-producing Enterobacterales, respectively. Prolonged infusion regimens (extended and continuous) could cover carbapenemase producers with a higher range of MICs (2 to 8 mg/L). IMPORTANCE Previous studies have shown that intravenous mecillinam might be suitable for treatment of urosepsis. Since multidrug-resistant Enterobacterales are common pathogens in such infections, an effort was made to delineate intermittent, extended, and continuous infusion regimens that could cover pathogens exhibiting relatively higher mecillinam MICs than the wild-type strains. Our PK/PD analysis has shown that mecillinam might be considered a valuable therapeutic option for the treatment of systemic infections caused by extended-spectrum ß-lactamase- and carbapenemase-producing Enterobacterales exhibiting mecillinam MICs up to 8 mg/L.

Catheter-Associated Urinary Tract Infections, Bacteremia, and Infection Control Interventions in a Hospital: A Six-Year Time-Series Study.

Catheter-associated urinary tract infections (CAUTIs) are among the most common healthcare-associated infections. Urine catheters are often reservoirs of multidrug-resistant (MDR) bacteria and sources of pathogens transmission to other patients. The current study was conducted to investigate the correlation between CAUTIs, MDR bacteremia, and infection control interventions, in a tertiary-care hospital in Athens, from 2013 to 2018. The following data were analyzed per month: 1. CAUTI incidence; 2. consumption of hand hygiene disinfectants; 3. incidence of isolation of MDR carrier patients, and 4.incidence of bacteremia/1000 patient-days [total resistant a.Gram-negative: carbapenem-resistant Pseudomonas aeruginosa, Acinetobacter baumannii, and Klebsiella pneumoniae; b.Gram-positive: vancomycin-resistant Enterococci and methicillin-resistant Staphylococcus aureus]. The use of scrub disinfectant solutions was associated with decreased CAUTI rate in Total Hospital Clinics (OR: 0.97, 95% CI: 0.96−0.98, p-value: <0.001) and in Adults ICU (OR: 0.79, 95% CI: 0.65−0.96, p-value:0.018) while no correlation was found with isolation rate of MDR-carrier pathogens. Interestingly, an increase in total bacteremia (OR: 0.81, 95% CI: 0.75−0.87, p-value:<0.001) or carbapenem-resistant bacteremia correlated with decreased incidence of CAUTIs (OR: 0.96, 95% CI: 0.94−0.99, p-value: 0.008). Hand hygiene measures had a robust and constant effect on infection control, reducing the incidence of CAUTIs.

Microbiological findings in prepubertal and pubertal girls with vulvovaginitis.

Vulvovaginitis is a common and challenging gynaecological problem in prepubertal and pubertal girls. Such an infection, owing to a wide range of aetiologies, if not responding to hygienic measures, needs further investigation through vaginal cultures, since treatment should be tailored accordingly. This study aimed to investigate the pathogens isolated in prepubertal and pubertal girls with signs and symptoms of vulvovaginitis. A total of 2314 symptomatic girls, 1094 prepubertal and 1220 pubertal, aged 2 to 16 years, were included. Vaginal samples were inoculated on specific culture plates followed by incubation in aerobic, anaerobic or CO2 atmosphere at 37 °C for 24 or 48 h, as appropriate. The identification of the isolated pathogens was carried out using Gram stain, conventional methods and the automated system VITEK 2 (BioMerieux, Marcy l'Etoile, France). Positive cultures were obtained from 587 (53.7%) of prepubertal girls and 926 (75.9%) of pubertal girls. A total of 613 and 984 pathogens were detected in prepubertal and pubertal subjects, respectively. Isolated bacteria included 40.1% and 22.8% Gram-positive cocci, 35.6% and 24.8% Gram-negative rods in the prepubertal and pubertal groups, respectively, with faecal pathogens being the most prevalent. Bacterial vaginosis was diagnosed in 22.8% of prepubertal and 37.9% of pubertal girls. Candida species were isolated mostly in the pubertal girls (14.5%). CONCLUSION: Culture results should be evaluated with caution in children with vulvovaginitis. In the prepubertal girls, the most common isolated pathogens were opportunistic bacteria of faecal origin while girls in late puberty were more susceptible to bacterial vaginosis and vulvovaginal candidiasis. WHAT IS KNOWN: • Vulvovaginitis is the most frequent and challenging reason for referral to paediatric and adolescent gynaecology services. • Microbiological examination can prove to be a significant tool to help diagnosis although results should be evaluated with caution in children. WHAT IS NEW: • Significantly more positive vaginal cultures and pathogens were recorded in symptomatic pubertal girls compared to prepubertal children. • The prevalence of bacterial vaginosis was increased in both prepubertal and pubertal girls with vulvovaginitis although significantly more in girls at puberty.

Ventilator-Associated Pneumonia, Multidrug-Resistant Bacteremia and Infection Control Interventions in an Intensive Care Unit: Analysis of Six-Year Time-Series Data.

Ventilator-associated pneumonia (VAP) occurs more than 48h after mechanical ventilation and is associated with a high mortality rate. The current hospital-based study aims to investigate the association between VAP rate, incidence of bacteremia from multidrug-resistant (MDR) pathogens, and infection control interventions in a single case mix ICU from 2013 to 2018. Methods: The following monthly indices were analyzed: (1) VAP rate; (2) use of hand hygiene disinfectants; (3) isolation rate of patients with MDR bacteria; and (4) incidence of bacteremia/1000 patient-days (total cases, total carbapenem-resistant cases, and carbapenem-resistant Acinetobacter baumannii, Pseudomonas aeruginosa, and Klebsiella pneumoniae cases separately). Results: Time trends of infection control interventions showed increased rates in isolation of patients with MDR pathogens (p <0.001) and consumption of hand disinfectant solutions (p =0.001). The last four years of the study an annual decrease of VAP rate by 35.12% (95% CI: −53.52 to −9.41; p =0.01) was recorded, which significantly correlated not only with reduced trauma and cardiothoracic surgery patients (IRR:2.49; 95% CI: 2.09−2.96; p <0.001), but also with increased isolation rate of patients with MDR pathogens (IRR: 0.52; 95% CI: 0.27−0.99; p = 0.048), and hand disinfectants use (IRR: 0.40; 95% CI: 0.18−0.89; p =0.024). Conclusions: Infection control interventions significantly contributed to the decrease of VAP rate. Constant infection control stewardship has a stable time-effect and guides evidence-based decisions.

Childhood Acute Urticaria and Seasonal Patterns Presenting in the Emergency Department of a Teaching Hospital in London, United Kingdom.

OBJECTIVES: To characterize the clinical presentation, possible trigger factors and seasonality of acute urticaria (AU) in children referred to the emergency department in a teaching hospital in London, United Kingdom. METHODS: This was a retrospective descriptive study. One hundred and sixty-three consecutive patients younger than 18 years with the diagnosis of AU who attended accident and emergency department from January 2018 until January 2020 at Chelsea and Westminster Hospital in London, United Kingdom, were included in the study. Descriptive statistics were performed using IBM SPSS 25. RESULTS: In total, 163 patients younger than 18 years, 82 (50.3%) boys and 81 (49.7%) girls. The median age of patients with AU was 4 years (interquartile range, 6 years). In 120 of (73.6%) 163 patients, there was no clear trigger of AU, in 17 (10.4%) of 163 patients, upper respiratory infection was considered as a potential trigger of AU, followed by food in 14 (8.6%) cases, medications in 9 (5.5%) cases, hymenoptera sting in 1 (0.6%) case, and contact urticaria 2 (1.2%) cases. Seventeen (10.4%) of the patients were admitted into the hospital as a result of their urticaria. The majority of AU urticaria cases were reported in autumn with 76 (46.6%) cases with most of AU cases occurring in November (34/163, 20.9%). CONCLUSIONS: A total of 163 cases of AU were identified between January 2018 and January 2020. A seasonal trend of AU in autumn was observed. Respiratory infections were found to be the most commonly associated potential trigger of AU cases.

Pruritic annular and vesicular eruption on trunk and extremities.

We report a case of linear IgA bullous dermatosis, a rare autoimmune blistering disorder that usually presents with the abrupt onset of tense bullae. We also emphasize the importance of direct immunofluorescence for the definitive diagnosis.

Panitumumab-Induced Eruptive Seborrhoeic Keratosis in a Patient with Metastatic Colorectal Cancer.

OBJECTIVES: Agents targeting the epidermal growth factor receptor (EGFR)-mediated signalling pathway are increasingly being used for the treatment of advanced lung, pancreatic, colorectal and head and neck cancers. CASE PRESENTATION: Here, we report the first case of eruptive seborrhoeic keratosis following panitumumab treatment, an anti-EGFR monoclonal antibody, in a 73-year-old patient with stage 4 (IV) colorectal cancer with hepatic metastasis. CONCLUSION: While panitumumab is an emerging therapy for RAS wild-type metastatic colorectal cancer, physicians should consider panitumumab as a potential cause of eruptive seborrhoeic keratosis. LEARNING POINTS: Panitumumab is a fully human monoclonal antibody targeting the epidermal growth factor receptor (EGFR), indicated for the treatment of wild-type RAS metastatic colorectal cancer.Dermatologic toxicity of all grades occurs in more than 90% of patients treated with EGFR inhibitors.To the best of our knowledge, we have reported here a rare side effect; panitumumab-induced eruptive seborrhoeic keratosis.

Turicella otitidis as an Unusual Agent Causing Palmoplantar Eczema: An Emerging Pathogen.

INTRODUCTION: Turicella otitidis, described as a new species over 20 years ago, has been isolated mainly from the external ear canal and middle ear fluid. Here, we report the first case of palmoplantar eczema related to T. otitidis. CASE PRESENTATION: Here, we report the first case of palmoplantar eczema in a 74-year-old female related to T. otitidis. CONCLUSIONS: The question as to whether T. otitidis is a potential pathogen in cases of dyshidrotic eczema is still open, but this could be better elucidated if corynebacteria were speciated more often. LEARNING POINTS: The coryneform bacteria Turicella otitidis and Corynebacterium auris were recently detected for the first time in the middle ear of patients with acute otitis media and chronic otitis media.T. otitidis is a potential extraotic pathogen.T. otitidis may be implicated in the pathogenesis of palmoplantar dermatitis.