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BACKGROUND Fecal microbiota transplantation (FMT) is a highly effective therapy for recurrent Clostridioides difficile infection (CDI); however, a small percentage of patients fail to achieve cure even after two FMTs. This high-risk cohort remains poorly understood. METHODS We performed a multicenter, multinational retrospective review of patients that underwent at least one FMT for a CDI indication at four academic FMT referrals. Patients' data including CDI, FMT, and FMT variables were assessed. The primary outcome was FMT failure after a second FMT defined as persistent diarrhea and positive laboratory test for C. difficile (PCR or toxin) despite a second FMT within 8 weeks of the first FMT. A multivariable logistic regression model was performed to determine predictors of second FMT failure. RESULTS A total of 540 patients received at least one FMT during the study period, of which 432 patients had success following the first FMT, 108 had documented failure (25%). Among those who failed the first FMT, 63 patients received a second FMT, of which 36 achieved cure, and 24 had documented failure after the second FMT. Patients that failed the first FMT but did not receive a second FMT and those lost to follow-up were excluded leaving 492 patients included in the analysis. The second FMT failure rate was 4.8% (24/492). Risk factors for second FMT failure identified by multivariable logistic regression included inpatient status (OR 7.01, 95% CI 2.37-20.78), the presence of pseudomembranes (OR 3.53, 95% CI 1.1-11.33), and immunocompromised state (OR 3.56, 95% CI 1.45-8.72) at the time of first FMT. CONCLUSION This study identifies clinically relevant risk factors predictive of failing a second FMT. Clinicians can use these variables to help identify high-risk patients and provide a better-informed consent regarding the possibility of needing multiple FMTs.BACKGROUND AND AIMS Infliximab rescue therapy is effective in patients with corticosteroid refractory acute severe ulcerative colitis, but predictors of response remain poorly understood. We aimed to identify predictors of colectomy in this high-risk patient population. METHODS Patients hospitalized with acute severe ulcerative colitis who received infliximab after failing intravenous corticosteroid therapy between July 2012 and June 2017 were retrospectively identified. Stepwise regression with backward elimination was used to identify predictors of colectomy at 90 days and 1 year. Ninety-day and 1-year colectomy rates were compared between the patients who received 5 mg/kg and 10 mg/kg IFX rescue dose. RESULTS Sixty-three patients met the eligibility criteria. https://www.selleckchem.com/products/aminoguanidine-hydrochloride.html Twenty-nine patients received 5 mg/kg, and 34 received 10 mg/kg infliximab dose. Serum albumin on admission (OR 0.10; p = 0.04) and band neutrophil percentage at the time of infliximab administration (OR 1.21; p = 0.02) were independent predictors of 90-day colectomy. A combination of serum albumin ≤ 2.5 g/dl and band neutrophil count ≥ 13% had a 100% positive predictive value for 90-day colectomy. Unadjusted 90-day and 1-year colectomy rates were similar in the 5 mg/kg and 10 mg/kg infliximab groups. After adjusting for confounding factors, 10 mg/kg infliximab dose was potentially protective for 90-day (OR 0.07; p = 0.06) but not for 1-year colectomy (OR 0.19; p = 0.16). CONCLUSIONS Bandemia and low serum albumin are independent predictors of failure of infliximab rescue therapy in acute severe ulcerative colitis. Serum albumin ≤ 2.5 g/dl and band neutrophil count ≥ 13% had a 100% positive predictive value for 90-day colectomy.INTRODUCTION Sepsis is a leading cause of mortality in burn patients. One of the major causes of sepsis in burn patients is Pseudomonas aeruginosa. We hypothesized that during dissemination from infected burn wounds and subsequent sepsis, P. aeruginosa affects the metabolome of the blood resulting in changes to specific metabolites that would serve as biomarkers for early diagnosis of sepsis caused by P. aeruginosa. OBJECTIVES To identify specific biomarkers in the blood after sepsis caused by P. aeruginosa infection of burns. METHODS Gas chromatography with time-of-flight mass spectrometry was used to compare the serum metabolome of mice that were thermally injured and infected with P. aeruginosa (B-I) to that of mice that were neither injured nor infected, mice that were injured but not infected, and mice that were infected but not injured. RESULTS Serum levels of 19 metabolites were significantly increased in the B-I group compared to controls while levels of eight metabolites were significantly decreased. Thymidine, thymine, uridine, and uracil (related to pyrimidine metabolism), malate and succinate (a possible sign of imbalance in the tricarboxylic acid cycle), 5-oxoproline (related to glutamine and glutathione metabolism), and trans-4-hydroxyproline (a major component of the protein collagen) were increased. Products of amino acid metabolism were significantly decreased in the B-I group, including methionine, tyrosine, indole-3-acetate, and indole-3-propionate. CONCLUSION In all, 26 metabolites were identified, including a unique combination of five metabolites (trans-4-hydroxyproline, 5-oxoproline, glycerol-3-galactoside, indole-3-acetate, and indole-3-propionate) that could serve as a set of biomarkers for early diagnosis of sepsis caused by P. aeruginosa in burn patients.BACKGROUND Three-dimensional (3D) printing is an emerging technology used in numerous medical fields. Reconstruction of large bone defects after tumor resections or complex revision surgeries is challenging especially in specific sites where modular prostheses are not available. The possibility to realize custom-made 3D-printed prostheses improves their application in surgical field despite the complication rate, gaining a lot of attention for potential benefits. OBJECTIVES We asked (1) What are the emerging indications and designs of 3D-printed prostheses for complex bone reconstructions? (2) What complications occur with the use of custom implants considering site? STUDY DESIGN AND METHODS We performed a retrospective analysis of every patient in whom a custom-made 3D-printed prosthesis was used to reconstruct a bone defect after resection for a bone tumour or challenging revision surgery from 2009 to 2018 in two referral centres. Forty-one patients (11 males [27%], 30 females [73%]) with a mean age of 41 years (range, 10-78 years) were included.
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