Recommendations on the use of azole antifungals in hematology-oncology patients / Recomendaciones sobre el uso de antifúgicos azolicos en el paciente oncohematológico

The administration of antifungals for therapeutic and, especially, prophylactic purposes is virtually a constant in patients requiring hematology-oncology treatment. Any attempt to prevent or treat Aspergillus or Mucor infections requires the administration of some drugs in the azole group, which include voriconazole, posaconazole and isavuconazole, noted for their activity against these pathogens. One very relevant aspect is the potential risk of interaction when associated with one of the antineoplastic drugs used to treat hematologic tumors, with serious complications. In this regard, acalabrutinib, bortezomib, bosutinib, carfilzomib, cyclophosphamide, cyclosporine A, dasatinib, duvelisib, gilteritinib, glasdegib, ibrutinib, imatinib, nilotinib, ponatinib, prednisone, ruxolitinib, tacrolimus, all-transretinoic acid, arsenic trioxide, venetoclax, or any of the vinca alkaloids, are very clear examples of risk, in some cases because their clearance is reduced and in others because of increased risk of QTc prolongation, which is particularly evident when the drug of choice is voriconazole or posaconazole. (AU)

La administración de antifúngicos con fines terapéuticos y especialmente, profilácticos es casi un constante en el paciente que precisa tratamiento oncohematológico. El intento de evitar o de tratar infecciones por Aspergillus o por Mucor exige la administración de algunos fármacos pertenecientes al grupo de los azoles, entre los que destacan por su actividad frente a estos patógenos, voriconazol, posaconazol e isavuconazol. Un aspecto de gran importancia es el riesgo potencial de interacciones cuando se asocian a alguno de los fármacos antineoplásico utilizados en el tratamiento de los tumores hematológicos, dando lugar a graves complicaciones. En este sentido, acalabrutinib, bortezomid, bosutinib, carfizolid, ciclofosfamida, ciscloporina A, dasatinib, duvelisib, gilteritinib, glasdegib, ibrutinib, imatinib, nilotinib, ponatinib, prednisona, ruxolitinib, tacrolimus, transretinoico, trióxido de Arsenio, venetoclax, o cualquiera de los alcaloides de la vinca, representan ejemplos muy evidentes de riesgos en unos casos porque su aclaramiento resulta reducido, en otros porque que se potencia el riesgo de prolongación del QTc, especialmente evidentes cuando el fármaco elegido es voriconazol o posaconazol. (AU)

Plasma Exchange: An Effective Rescue Therapy in Critically Ill Patients With Coronavirus Disease 2019 Infection.

OBJECTIVES: Infection by severe acute respiratory syndrome coronavirus-2 can induce uncontrolled systemic inflammation and multiple organ failure. The aim of this study was to evaluate if plasma exchange, through the removal of circulating mediators, can be used as rescue therapy in these patients. DESIGN: Single center case series. SETTING: Local study. SUBJECTS: Four critically ill adults with coronavirus disease 19 pneumonia that failed conventional interventions. INTERVENTIONS: Plasma exchange. Two to six sessions (1.2 plasma volumes). Human albumin (5%) was used as the main replacement fluid. Fresh frozen plasma and immunoglobulins were administered after each session to avoid coagulopathy and hypogammaglobulinemia. MEASUREMENTS AND MAIN RESULTS: Serum markers of inflammation and macrophage activation. All patients showed a dramatic reduction in inflammatory markers, including the main cytokines, and improved severity scores after plasma exchange. All survived to ICU admission. CONCLUSIONS: Plasma exchange mitigates cytokine storm, reverses organ failure, and could improve survival in critically ill patients with coronavirus disease 2019 infection.

La crisis de los antibióticos: de la prescripción empírica a la dirigida / The crisis of antibiotics: From empirical to directed prescription

No disponible

Factors associated with development of nephrotoxicity in patients treated with vancomycin versus daptomycin for severe Gram-positive infections: A practice-based study / Factores asociados con el desarrollo de nefrotoxicidad en pacientes tratados con vancomicina frente a daptomicina en infecciones graves por grampositivos: Un estudio basado en la práctica clínica

Objectives. To evaluate nephrotoxicity development in patients treated with vancomycin (VAN) and daptomycin (DAP) for proven severe Gram-positive infections in daily practice. Patients and methods. A practice-based, observational, retrospective study (eight Spanish hospitals) was performed including patients ≥18 years with a baseline glomerular filtration rate (GFR)>30 mL/min and/or serum creatinine level<2 mg/dL treated with DAP or VAN for >48h. Nephrotoxicity was considered as a decrease in baseline GRF to <50 mL/min or decrease of >10 mL/min from a baseline GRF<50 mL/min. Multivariate analyses were performed to determine factors associated with 1) treatment selection, 2) nephrotoxicity development, and 3) nephrotoxicity development within each antibiotic group. Results. A total of 133 patients (62 treated with DAP, 71 with VAN) were included. Twenty-one (15.8%) developed nephrotoxicity: 4/62 (6.3%) patients with DAP and 17/71 (23.3%) with VAN (p=0.006). No differences in concomitant administration of aminoglycosides or other potential nephrotoxic drugs were found between groups. Factors associated with DAP treatment were diabetes mellitus with organ lesion (OR=7.81, 95%CI:1.39-4.35) and basal creatinine ≥0.9 mg/dL (OR=2.53, 95%CI:1.15-4.35). Factors associated with VAN treatment were stroke (OR=7.22, 95%CI:1.50-34.67), acute myocardial infarction (OR=6.59, 95%CI:1.51-28.69) and primary bacteremia (OR=5.18, 95%CI:1.03-25.99). Factors associated with nephrotoxicity (R2=0.142; p=0.001) were creatinine clearance<80 mL/min (OR=9.22, 95%CI:1.98-30.93) and VAN treatment (OR=6.07, 95%CI:1.86-19.93). Factors associated with nephrotoxicity within patients treated with VAN (R2=0.232; p=0.018) were congestive heart failure (OR=4.35, 95%CI:1.23-15.37), endocarditis (OR=7.63, 95%CI:1.02-57.31) and basal creatinine clearance<80 mL/min (OR=7.73, 95%CI:1.20-49.71). Conclusions. Nephrotoxicity with VAN was significantly higher than with DAP despite poorer basal renal status in the DAP group

Objectivos: Evaluar el desarrollo de nefrotoxicidad en la práctica clínica diaria en pacientes con infecciones graves probadas por grampositivos, tratados con vancomicina (VAN) y daptomicina (DAP). Pacientes y métodos: Se diseñó un estudio observacional retrospectivo, basado en la práctica clínica diaria (ocho hospitales españoles), en el que se incluyeron pacientes ≥ 18 años con una tasa basal de filtrado glomerular (GFR) > 30 mL/min y/o una creatinina sérica < 2 mg/dl para los pacientes tratados con DAP o vancomicina durante > 48 horas. La nefrotoxicidad fue considerada como una disminución del GRF basal a < 50 mL/min o una disminución de > 10 mL/min desde un GRF basal de < 50 ml/min. Se diseñaron análisis multivariantes para determinar los factores asociados con: 1) la selección del tratamiento, 2) el desarrollo de nefrotoxicidad y 3) el desarrollo de nefrotoxicidad con cada antibiótico. Resultados: Se incluyeron 133 pacientes (62 tratados con DAP, 71 con vancomicina). Veintiuno (15,8%) desarrollaron nefrotoxicidad: 4/62 (6,3%) pacientes con DAP y 17/71 (23,3%) con VAN (p=0,006). No se encontraron diferencias entre los grupos en la administración concomitante de aminoglucósidos u otros fármacos potencialmente nefrotóxicos. Los factores asociados con el tratamiento con DAP fueron diabetes mellitus con lesión orgánica (OR=7,81; IC95%:1,39-4,35) y una creatinina basal ≥0,9 mg/dL (OR=2,53; IC95%:1,15-4,35). Los factores asociados con tratamiento con VAN fueron ictus (OR=7,22; IC95%:1,50-34,67), infarto agudo de miocardio (OR=6,59; IC95%:1,51-28,69) y bacteriemia primaria (OR=5,18, IC95%:1,03-25,99). Los factores asociados con nefrotoxicidad (R2=0,142; p=0,001) fueron aclaramiento de creatinina <80 mL/min (OR=9,22; IC95%:1,98-30,93) y tratamiento con VAN (OR=6,07; IC95%:1,86-19,93). Los factores asociados con nefrotoxicidad en los pacientes tratados con VAN (R2=0,232; p=0,018) fueron insuficiencia cardíaca congestiva (OR=4.35; IC95%:1,23-15,37), endocarditis (OR=7,63; IC95%:1,02-57,31) y una creatinina basal <80 mL/min (OR=7,73; IC95%:1,20-49,71). Conclusiones: La nefrotoxicidad con VAN fue significativamente más alta que la de DAP a pesar del pobre status basal renal del grupo de DAP

Antibiotic selection in the treatment of acute invasive infections by Pseudomonas aeruginosa: Guidelines by the Spanish Society of Chemotherapy / Elección del tratamiento antibiótico en la infección invasiva aguda por Pseudomonas aeruginosa: Guía de la Sociedad Española de Quimioterapia

Pseudomonas aeruginosa is characterized by a notable intrinsic resistance to antibiotics, mainly mediated by the expression of inducible chromosomic β-lactamases and the production of constitutive or inducible efflux pumps. Apart from this intrinsic resistance, P. aeruginosa possess an extraordinary ability to develop resistance to nearly all available antimicrobials through selection of mutations. The progressive increase in resistance rates in P. aeruginosa has led to the emergence of strains which, based on their degree of resistance to common antibiotics, have been defined as multidrug resistant, extended-resistant and panresistant strains. These strains are increasingly disseminated worldwide, progressively complicating the treatment of P. aeruginosa infections. In this scenario, the objective of the present guidelines was to review and update published evidence for the treatment of patients with acute, invasive and severe infections caused by P. aeruginosa. To this end, mechanisms of intrinsic resistance, factors favoring development of resistance during antibiotic exposure, prevalence of resistance in Spain, classical and recently appeared new antibiotics active against P. aeruginosa, pharmacodynamic principles predicting efficacy, clinical experience with monotherapy and combination therapy, and principles for antibiotic treatment were reviewed to elaborate recommendations by the panel of experts for empirical and directed treatment of P. aeruginosa invasive infections (AU)

Pseudomonas aeruginosa se caracteriza por una notable resistencia intrínseca a los antibióticos mediada fundamentalmente por la expresión de β-lactamasas cromosómicas inducibles y la producción constitutiva o inducible de bombas de expulsión. Además de esta resistencia intrínseca, P. aeruginosa posee una extraordinaria capacidad para desarrollar resistencia a prácticamente todos los antimicrobianos disponibles a través de la selección de mutaciones. El aumento progresivo de la resistencia en P. aeruginosa ha llevado a la aparición de cepas que, de acuerdo con el grado de resistencia frente a los antibióticos habituales, se han definido como multirresistentes, extensamente resistentes y panresistentes. Estas cepas se están diseminando mundialmente, complicando progresivamente el tratamiento de las infecciones por P. aeruginosa. En este escenario, el objetivo de las presentes recomendaciones es la revisión y puesta al día de la evidencia publicada para el tratamiento de pacientes con infección aguda, invasiva y grave por P. aeruginosa. Con este fin, se han revisado los mecanismos de resistencia intrínseca, factores que favorecen el desarrollo de resistencia durante la exposición a antibióticos, prevalencia de la resistencia en España, antibióticos clásicos así como los de reciente introducción activos frente a P. aeruginosa, principios farmacodinámicos predictores de eficacia, experiencia clínica con tratamientos en monoterapia o terapia combinada y principios del tratamiento antibiótico para elaborar por un panel de xpertos recomendaciones para el tratamiento empírico o dirigido de infecciones invasivas por P. aeruginosa (AU)

Epidemiology and prognosis of candidaemia in elderly patients.

The aim of the study was to analyse the epidemiology and prognosis of candidaemia in elderly patients. We performed a comparison of clinical presentation of candidaemia according to age and a study of hazard factors within a prospective programme performed in 29 hospitals. One hundred and seventy-six episodes occurred in elderly patients (>75 years), 227 episodes in middle-aged patients (61-75 years) and 232 episodes in younger patients (16-60 years). Central venous catheter, parenteral nutrition, neutropenia, immunosuppressive therapy and candidaemia caused by Candida parapsilosis were less frequent in elderly patients. These patients received inadequate antifungal therapy (57.3%) more frequently than middle-aged and younger patients (40.5% P < .001). Mortality during the first week (20%) and 30 days (42%) was higher in elderly patients. The variables independently associated with mortality in elderly patients during the first 7 days were acute renal failure (OR: 2.64), Pitt score (OR: 1.57) and appropriate antifungal therapy (OR: 0.132). Primary candidaemia (OR: 2.93), acute renal failure (OR: 3.68), Pitt score (OR: 1.38), appropriate antifungal therapy (OR: 0.3) and early removal of the central catheter (OR: 0.47) were independently associated with 30-day mortality.In conclussion, inadequate antifungal treatment is frequently prescribed to elderly patients with candidaemia and is related with early and late mortality.

Executive summary of the diagnosis and treatment of urinary tract infection: Guidelines of the Spanish Society of Clinical Microbiology and Infectious Diseases (SEIMC) / Resumen ejecutivo del diagnóstico y tratamiento de las infecciones del tracto urinario. Guía de la Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC)

Most urinary tract infections (UTI) are uncomplicated infections occurring in young women. An extensive evaluation is not required in the majority of cases, and they can be safely managed as outpatients with oral antibiotics. Escherichia coli is by far the most common uropathogen, accounting for >80% of all cases. Other major clinical problems associated with UTI include asymptomatic bacteriuria, and patients with complicated UTI. Complicated UTIs are a heterogeneous group associated with conditions that increase the risk of acquiring infection or treatment failure. Distinguishing between complicated and uncomplicated UTI is important, as it influences the initial evaluation, choice, and duration of antimicrobial therapy. Diagnosis is especially challenging in the elderly and in patients with in-dwelling catheters. The increasing prevalence of resistant uropathogens, including extended-spectrum β-lactamases and carbapenemase-producing Enterobacteriaceae, and other multidrug-resistant Gram-negative organisms further compromises treatment of both complicated and uncomplicated UTIs. The aim of these Clinical Guidelines is to provide a set of recommendations for improving the diagnosis and treatment of UTI

La mayoría de infecciones del tracto urinario (ITU) son infecciones no complicadas que se presentan en mujeres jóvenes. En la mayoría de los casos no se requieren pruebas diagnósticas complementarias y se pueden tratar ambulatoriamente de forma segura con antibióticos por vía oral. Escherichia coli es el uropatógeno más frecuente causando más del 80% de estas infecciones. La bacteriuria asintomática (BA) y las ITUs complicadas son otras formas de presentación de la ITU. Las ITU complicadas son un grupo heterogéneo de condiciones que incrementan el riesgo de adquisición de la infección o de fracaso del tratamiento. La distinción entre ITU complicada y no complicada es fundamental para decidir la evaluación inicial del paciente, la elección del antimicrobiano y la duración del mismo. El diagnóstico es especialmente difícil en ancianos y en pacientes con sondaje permanente. El incremento de cepas resistentes a los antibióticos, especialmente Enterobacterías productoras de beta-lactamasas de espectro extendido y de carbapenemasas y de otros Gram negativos multirresistentes, dificultan la elección del tratamiento de las ITU complicadas y no complicadas. El objetivo de esta guía clínica es proporcionar recomendaciones basadas en la evidencia para mejorar el diagnóstico y tratamiento de las ITU

Executive summary of the diagnosis and treatment of urinary tract infection: Guidelines of the Spanish Society of Clinical Microbiology and Infectious Diseases (SEIMC).

Most urinary tract infections (UTI) are uncomplicated infections occurring in young women. An extensive evaluation is not required in the majority of cases, and they can be safely managed as outpatients with oral antibiotics. Escherichia coli is by far the most common uropathogen, accounting for >80% of all cases. Other major clinical problems associated with UTI include asymptomatic bacteriuria, and patients with complicated UTI. Complicated UTIs are a heterogeneous group associated with conditions that increase the risk of acquiring infection or treatment failure. Distinguishing between complicated and uncomplicated UTI is important, as it influences the initial evaluation, choice, and duration of antimicrobial therapy. Diagnosis is especially challenging in the elderly and in patients with in-dwelling catheters. The increasing prevalence of resistant uropathogens, including extended-spectrum ß-lactamases and carbapenemase-producing Enterobacteriaceae, and other multidrug-resistant Gram-negative organisms further compromises treatment of both complicated and uncomplicated UTIs. The aim of these Clinical Guidelines is to provide a set of recommendations for improving the diagnosis and treatment of UTI.

Rapid Diagnosis of Staphylococcal Catheter-Related Bacteraemia in Direct Blood Samples by Real-Time PCR.

Catheter-related bacteremia (CRB) is an important cause of morbidity and mortality among hospitalized patients, being staphylococci the main etiologic agents. The objective of this study was to assess the use of a PCR-based assay for detection of staphylococci directly from blood obtained through the catheter to diagnose CRB caused by these microorganisms and to perform a cost-effectiveness analysis. A total of 92 patients with suspected CRB were included in the study. Samples were obtained through the catheter. Paired blood cultures were processed by standard culture methods and 4 ml blood samples were processed by GeneXpert-MRSA assay for the detection of methicillin-susceptible (MSSA) or methicillin-resistant (MRSA) Staphylococcus aureus, and methicillin-resistant coagulase-negative staphylococci (MR-CoNS). Sixteen CRB caused by staphylococci were diagnosed among 92 suspected patients. GeneXpert detected 14 out of 16 cases (87.5%), including 4 MSSA and 10 MR-CoNS in approximately 1 hour after specimen receipt. The sensitivity and specificity of GeneXpert were 87.5% (CI 95%: 60.4-97.8) and 92.1% (CI 95%: 83-96.7), respectively, compared with standard culture methods. The sensitivity of GeneXpert for S. aureus was 100%. Regarding a cost-effectiveness analysis, the incremental cost of using GeneXpert was of 31.1€ per patient while the incremental cost-effectiveness ratio of GeneXpert compared with blood culture alones was about 180€ per life year gained. In conclusion, GeneXpert can be used directly with blood samples obtained through infected catheters to detect S. aureus and MR-CoNS in approximately 1h after sampling. In addition, it is cost-effective especially in areas with high prevalence of staphylococcal CRB.

Antibiotic prophylaxis in cirrhosis: Good and bad.

UNLABELLED: Patients with cirrhosis, particularly those with decompensated cirrhosis, are at increased risk of bacterial infections that may further precipitate other liver decompensations including acute-on-chronic liver failure. Infections constitute the main cause of death in patients with advanced cirrhosis, and strategies to prevent them are essential. The main current strategy is the use of prophylactic antibiotics targeted at specific subpopulations at high risk of infection: prior episode of spontaneous bacterial peritonitis, upper gastrointestinal bleeding, and low-protein ascites with associated poor liver function. Antibiotic prophylaxis effectively prevents not only the development of bacterial infections in all these indications but also further decompensation (variceal bleeding, hepatorenal syndrome) and improves survival. However, antibiotic prophylaxis is also associated with a clinically relevant and increasing drawback, the development of infections due to multidrug-resistant organisms. Several strategies have been suggested to balance the risks and benefits of antibiotic prophylaxis. CONCLUSION: Antibiotic stewardship principles such as the restriction of antibiotic prophylaxis to subpopulations at a very high risk for infection, the avoidance of antibiotic overuse, and early deescalation policies are key to achieve this balance; nonantibiotic prophylactic measures such as probiotics, prokinetics, bile acids, statins, and hematopoietic growth factors could also contribute to ameliorate the development and spread of multidrug-resistant bacteria in cirrhosis. (Hepatology 2016;63:2019-2031).

[Management of invasive candidiasis in non-neutropenic patient]. / Manejo de la candidiasis invasiva en el paciente no neutropénico.

Among the most frequents etiological agents that causing nosocomial infections, there is included Candida spp. Candida's bloodstream infection mortality rates are over 30%. Antifungal early treatment is essential to improve the prognosis of this type of infection. Because of the lack of fast enough microbiological tests for early diagnosis, treatment must necessarily be initiated empirically.

Manejo de la candidiasis invasiva en el paciente no neutropénico / Management of invasive candidiasis in non-neutropenic patient

Entre los agentes etiológicos que con mayor frecuencia producen infección nosocomial se incluye Candida spp. La candidemia cursa con tasas de mortalidad superiores al 30%. La instauración temprana de tratamiento antifúngico es esencial para mejorar el pronóstico. A falta de pruebas microbiológicas que permitan establecer un diagnóstico precoz, el tratamiento debe establecerse necesariamente de forma empírica (AU)

Among the most frequents etiological agents that causing nosocomial infections, there is included Candida spp. Candida’s bloodstream infection mortality rates are over 30%. Antifungal early treatment is essential to improve the prognosis of this type of infection. Because of the lack of fast enough microbiological tests for early diagnosis, treatment must necessarily be initiated empirically (AU)

[Invasive pulmonary aspergillosis in patients with chronic obstructive pulmonary disease]. / Aspergilosis pulmonar invasiva en el enfermo con enfermedad pulmonar obstructiva crónica.

Invasive pulmonary aspergillosis (IPA) is a common infection in immunocompromised patients with hematological malignancies or allogenic stem cell transplantation, and is less frequent in the context of chronic obstructive pulmonary disease (COPD). Mucociliary activity impairment, immunosuppression due to the inhibition of alveolar macrophages and neutrophils by steroids, and receiving broad-spectrum antibiotics, play a role in the development of IPA in COPD patients. Colonized patients or those with IPA are older, with severe CODP stage (GOLD≥III), and have a higher number of comorbidities. The mortality rate is high due to the fact that having a definitive diagnosis of IPA in COPD patients is often difficult. The main clinical and radiological signs of IPA in these types of patients are non-specific, and tissue samples for definitive diagnosis are often difficult to obtain. The poor prognosis of IPA in COPD patients could perhaps be improved by faster diagnosis and prompt initiation of antifungal treatment. Some tools, such as scales and algorithms based on risk factors of IPA, may be useful for its early diagnosis in these patients.

Aspergilosis pulmonar invasiva en el enfermo con enfermedad pulmonar obstructiva crónica / Invasive pulmonary aspergillosis in patients with chronic obstructive pulmonary disease

La aspergilosis pulmonar invasiva (API) se observa en pacientes inmunodeprimidos por una enfermedad oncohematológica o en receptores de un trasplante alogénico de progenitores hematopoyéticos, y, con menor frecuencia, en pacientes con enfermedad pulmonar obstructiva crónica (EPOC). El deterioro de la actividad mucociliar, la disminución de la función de los macrófagos y neutrófilos por la acción de los esteroides y el uso de antibióticos de amplio espectro intervienen en el desarrollo de la API en los pacientes con EPOC. Tanto los pacientes colonizados como los que ya tienen API son de edad avanzada, se hallan en estadios evolucionados de EPOC (GOLD ≥ III) y presentan un gran número de comorbilidades. La mortalidad en estos pacientes también es alta debido a la dificultad de obtener un diagnóstico definitivo de API en la EPOC. Los principales signos clínicos y radiológicos de API son inespecíficos en la EPOC y las muestras tisulares que confirman el diagnóstico son a menudo difíciles de obtener. El mal pronóstico de la API en pacientes con EPOC mejoraría con un diagnóstico más precoz que permitiera la pronta instauración del tratamiento apropiado. Algunas herramientas, como escalas y algoritmos basados en factores de riesgo de API, podrían ayudar al reconocimiento temprano de esta complicación en la EPOC (AU)

Invasive pulmonary aspergillosis (IPA) is a common infection in immunocompromised patients with hematological malignancies or allogenic stem cell transplantation, and is less frequent in the context of chronic obstructive pulmonary disease (COPD). Mucociliary activity impairment, immunosuppression due to the inhibition of alveolar macrophages and neutrophils by steroids, and receiving broad-spectrum antibiotics, play a role in the development of IPA in COPD patients. Colonized patients or those with IPA are older, with severe CODP stage (GOLD ≥ III), and have a higher number of comorbidities. The mortality rate is high due to the fact that having a definitive diagnosis of IPA in COPD patients is often difficult. The main clinical and radiological signs of IPA in these types of patients are non-specific, and tissue samples for definitive diagnosis are often difficult to obtain. The poor prognosis of IPA in COPD patients could perhaps be improved by faster diagnosis and prompt initiation of antifungal treatment. Some tools, such as scales and algorithms based on risk factors of IPA, may be useful for its early diagnosis in these patients (AU)

High doses of daptomycin (10 mg/kg/d) plus rifampin for the treatment of staphylococcal prosthetic joint infection managed with implant retention: a comparative study.

We aimed to analyze the efficacy and safety of high doses of daptomycin (10 mg/kg/d) plus rifampin (D10 + R) for prosthetic joint infection (PJI). This was an observational retrospective multicenter study (2010-2012) including all patients with acute PJI by fluoroquinolone-resistant staphylococci managed with implant retention and D10 + R. Twenty cases were included: 2 (10%) were withdrawn due to toxicity, leaving 18 cases for efficacy evaluation: 13 (72%) women, age 79 years (range 58-90). Clinical failure was observed in 9 (50%) patients: in 5 cases, staphylococci were recovered (28% of microbiological failures); no modification of daptomycin-MIC was observed. These 18 cases were compared with 44 matched historical cases: failure rate was similar, but whereas in the historical series, failure occurred fundamentally during therapy, in the present series, it was recorded after discontinuation of antibiotics. In summary, D10 + R may be the initial treatment of choice for PJI by fluoroquinolone-resistant staphylococci managed with implant retention.

Bugs, hosts and ICU environment: Countering pan-resistance in nosocomial microbiota and treating bacterial infections in the critical care setting / Gérmenes, huéspedes y el entorno de la Unidad de Cuidados Intensivos: contrarrestando la panresistencia en la microbiota nosocomial para tratar las infecciones bacterianas en cuidados críticos

ICUs are areas where resistance problems are the largest, and these constitute a major problem for the intensivist's clinical practice. Main resistance phenotypes among nosocomial microbiota are (I) vancomycin-resistance/heteroresistance and tolerance in grampositives (MRSA, enterococci) and (II) efflux pumps/enzymatic resistance mechanisms (ESBLs, AmpC, metallo-betalactamases) in gramnegatives. These phenotypes are found at different rates in pathogens causing respiratory (nosocomial pneumonia/ventilator-associated pneumonia), bloodstream (primary bacteremia/catheter-associated bacteremia), urinary, intraabdominal and surgical wound infections and endocarditis in the ICU. New antibiotics are available to overcome non-susceptibility in grampositives; however, accumulation of resistance traits in gramnegatives has led to multidrug resistance, a worrisome problem nowadays. This article reviews microorganism/infection risk factors for multidrug resistance, suggesting adequate empirical treatments. Drugs, patient and environmental factors all play a role in the decision to prescribe/recommend antibiotic regimens in the specific ICU patient, implying that intensivists should be familiar with available drugs, environmental epidemiology and patient factors (AU)

UCIs son las áreas donde los problemas de resistencia son los más grandes, y éstos constituyen un problema importante para la práctica clínica de los intensivistas . Fenotipos de resistencia principales entre la microbiota nosocomial son ( I ) vancomycin-resistance/heteroresistance y tolerancia en grampositives ( MRSA, enterococos ) y ( II ) las bombas de flujo / mecanismos enzimáticos de resistencia ( BLEE , AmpC , metalo- betalactamasas ) en gramnegativos . Estos fenotipos se encuentran en diferentes tipos de patógenos causantes de las vías respiratorias (neumonía / pulmonía nosocomial asociada a ventilación mecánica), el torrente sanguíneo ( bacteremia primaria / bacteriemia asociada a catéter ) , urinario, infecciones de las heridas quirúrgicas intraabdominales y endocarditis y en la UCI. Nuevos antibióticos están disponibles para superar la no - susceptibilidad in grampositives, sin embargo, la acumulación de rasgos de resistencia en gramnegativos ha dado lugar a la resistencia a múltiples fármacos, un problema preocupante en la actualidad. Este artículo revisa los factores de riesgo microorganismo / infección de la resistencia a múltiples fármacos, lo que sugiere tratamientos empíricos adecuados. Las drogas, el paciente y los factores ambientales juegan un papel en la decisión de prescribir / recomendar regímenes de antibióticos en el paciente en la UCI específica, lo que implica que los intensivistas deben familiarizarse con los fármacos disponibles, epidemiología ambiental y los factores del paciente (AU)