Your search

The Practice Guidelines Committee of the American Society of Transplantation and Cellular Therapy partnered with its Transplant Infectious Disease Special Interest Group to update its 2009 compendium-style infectious diseases guidelines for hematopoietic cell transplantation (HCT). A completely fresh approach was taken, with the goal of better serving clinical providers by publishing each stand-alone topic in the infectious diseases series in a concise format of frequently asked questions...

Background Nosocomial pneumonia due to multidrug-resistant Gram-negative pathogens poses an increasing challenge. We compared the efficacy and safety of cefiderocol versus high-dose, extended-infusion meropenem for adults with nosocomial pneumonia. Methods We did a randomised, double-blind, parallel-group, phase 3, non-inferiority trial in 76 centres in 17 countries in Asia, Europe, and the USA (APEKS-NP). We enrolled adults aged 18 years and older with hospital-acquired,...

Background.  Extended-spectrum β-lactamase–producing Enterobacteriaceae (ESBL-E) carriage is frequent among liver transplant (LT) recipients, thereby fostering a large empirical carbapenem prescription. However, ESBL-E infections occur in only 10%–25% of critically ill patients with rectal colonization. Our aim was to identify risk factors for post-LT ESBL-E infection in colonized patients. The effect of perioperative antimicrobial prophylaxis (AP) was also analyzed in patients with...

Acinetobacter infections have emerged as an important pathogen in transplant recipients. It is a major cause of multidrug-resistant nosocomial infections, particularly pneumonia and bloodstream infections, and is associated with high morbidity and mortality. Given the organism’s propensity to develop resistance to multiple classes of antibiotics, treatment options can be limited but frequently include carbapenems, polymyxins, sulbactams, tetracyclines, and glycylcyclines. Infection...

Objectives: To evaluate the efficacy of oral colistin-neomycin in preventing multidrug-resistant Enterobacterales (MDR-E) infections in solid organ transplant (SOT) recipients. Methods: Multicentre, open-label, parallel-group, controlled trial with balanced (1:1) randomization in five transplant units. SOT recipients were screened for MDR-E intestinal colonization (extended-spectrum b-lactamase or carbapenemase producing) before transplantation and þ7 and þ 14 days after transplantation and...

As one of the most formidable bacterial pathogens encountered in clinical practice, infections related to Pseudomonas aeruginosa (PsA) present a number of challenges to the infectious disease physician. In immunocompromised hosts in particular, PsA has the potential to manifest with unique, recurrent, and often severe clinical syndromes that warrant infectious disease consultation. A staggering array of virulence factors combined with a host of intrinsic and acquired genetic elements...

The incidence of extended-spectrum β-lactamase (ESBL)-producing Enterobacterales (ESBL-EB) and carbapenem-resistant Enterobacterales (CRE) infections has been increasing worldwide, although the prevalence and mechanism of resistance vary by geographic region and institutional patterns of resistance. These multidrug-resistant infections are challenging to diagnose and treat and can cause significant morbidity and mortality in transplant patients. In this chapter we highlight recent trends in...

Multidrug-resistant organisms (MDROs) cause morbidity and mortality after organ transplantation. Infection from these organisms may arise from pre-transplant colonization/infectious events, and these organisms may be donor-derived. Here we review the epidemiology, clinical manifestations, disease diagnostics, and therapeutic modalities for six common MDRO bacterial pathogens in the context of solid organ and bone marrow transplantation.

Burkholderia species are found in soil and water and have the ability to cause serious human disease. Infections from these organisms are particularly challenging to manage in the immunocompromised host. Speciation, and identification to strain level, has relevance to virulence, prognosis, and therapeutic strategy – particularly in the case of cystic fibrosis – indicated in lung transplantation. B. pseudomallei complex causes melioidosis and needs to be considered in endemic area travelers or...

The impact of pre-transplant (SOT) carbapenem-resistant Enterobacterales (CRE) colonization or infection on post-SOT outcomes is unclear. We conducted a multi-center, international, cohort study of SOT recipients, with microbiologically diagnosed CRE colonization and/or infection pre-SOT. Sixty adult SOT recipients were included (liver n = 30, hearts n = 17). Klebsiella pneumoniae (n = 47, 78%) was the most common pre-SOT CRE species. Median time from CRE detection to SOT was 2.32 months...

Background Multidrug-resistant Gram-negative bacterial infections are increasingly common among solid organ transplant (SOT) recipients, leading to challenges in the selection of empiric antimicrobial therapy. We sought to develop a clinical tool to predict which SOT recipients are at high risk for extended-spectrum beta-lactamase (ESBL)-producing Enterobacterales (EB) bloodstream infection (BSI). Methods A multicenter case-control study was performed. The source population included SOT...

Background: Extended-spectrum beta-lactamase-producing Escherichia coli (ESBL-EC) is increasing worldwide. The drugs of choice for treatment of ESBLs are parenteral carbapenems. The aim of this study was to evaluate the in vitro and in vivo efficacy of a new combination of oral cephalosporins and amoxicillin/clavulanate in treatment of ESBL-EC. Methods: A total of 150 ESBL-EC samples were collected over 1 year from two referral centers. Synergistic studies of cephalosporins and...

These updated guidelines from the Infectious Diseases Community of Practice of the American Society of Transplantation review the diagnosis, prevention, and management of infections due to multidrug-resistant (MDR) Gram-negative bacilli in the pre- and post-transplant period. MDR Gram-negative bacilli, including carbapenem-resistant Enterobacteriaceae, MDR Pseudomonas aeruginosa, and carbapenem-resistant Acinetobacter baumannii, remain a threat to successful organ transplantation. Clinicians...

Despite the overall decline in the frequency of documented gram-negative infections in transplant recipients receiving antimicrobial prophylaxis, the proportion of these infections caused by nonfermentative gram-negative bacilli (NFGNB) is increasing. Pseudomonas aeruginosa is the most common species of NFGNB isolated from such patients, from both monomicrobial and polymicrobial infections. The spectrum of infection caused by P. aeruginosa is wide, and involvement of multiple organ systems...

Enterobacteriaceae comprise important pathogens for recipients of solid organ and hematopoietic stem cell transplants. Especially common in the early posttransplant period when transplant recipients are still hospitalized, they can occur at any time following the procedure. Increasing frequency of colonization and invasive disease due to antimicrobial-resistant pathogens has been described in recipients of solid organ and hematopoietic stem cell transplants. In solid organ transplant...

Increasing bacterial resistance and poor patient adherence rates limit the effectiveness of conventional antibiotic therapies for urinary tract infection (UTI). The objective of this study was to investigate whether a single aminoglycoside dose adequately treated UTI., Increasing bacterial resistance and poor patient adherence rates limit the effectiveness of conventional antibiotic therapies for urinary tract infection (UTI). The objective of this study was to investigate whether a single...