Gut microbiome and antibiotic resistance effects during travelers' diarrhea treatment and prevention.

IMPORTANCE: The travelers' gut microbiome is potentially assaulted by acute and chronic perturbations (e.g., diarrhea, antibiotic use, and different environments). Prior studies of the impact of travel and travelers' diarrhea (TD) on the microbiome have not directly compared antibiotic regimens, and studies of different antibiotic regimens have not considered travelers' microbiomes. This gap is important to be addressed as the use of antibiotics to treat or prevent TD-even in moderate to severe cases or in regions with high infectious disease burden-is controversial based on the concerns for unintended consequences to the gut microbiome and antimicrobial resistance (AMR) emergence. Our study addresses this by evaluating the impact of defined antibiotic regimens (single-dose treatment or daily prophylaxis) on the gut microbiome and resistomes of deployed servicemembers, using samples collected during clinical trials. Our findings indicate that the antibiotic treatment regimens that were studied generally do not lead to adverse effects on the gut microbiome and resistome and identify the relative risks associated with prophylaxis. These results can be used to inform therapeutic guidelines for the prevention and treatment of TD and make progress toward using microbiome information in personalized medical care.

Time to endoscopy for acute upper gastrointestinal bleeding: Results from a prospective multicentre trainee-led audit.

Background: Endoscopy within 24 h of admission (early endoscopy) is a quality standard in acute upper gastrointestinal bleeding (AUGIB). We aimed to audit time to endoscopy outcomes and identify factors affecting delayed endoscopy (>24 h of admission). Methods: This prospective multicentre audit enrolled patients admitted with AUGIB who underwent inpatient endoscopy between November and December 2017. Analyses were performed to identify factors associated with delayed endoscopy, and to compare patient outcomes, including length of stay and mortality rates, between early and delayed endoscopy groups. Results: Across 348 patients from 20 centres, the median time to endoscopy was 21.2 h (IQR 12.0-35.7), comprising median admission to referral and referral to endoscopy times of 8.1 h (IQR 3.7-18.1) and 6.7 h (IQR 3.0-23.1), respectively. Early endoscopy was achieved in 58.9%, although this varied by centre (range: 31.0-87.5%, p = 0.002). On multivariable analysis, lower Glasgow-Blatchford score, delayed referral, admissions between 7:00 and 19:00 hours or via the emergency department were independent predictors of delayed endoscopy. Early endoscopy was associated with reduced length of stay (median difference 1 d; p = 0.004), but not 30-d mortality (p = 0.344). Conclusions: The majority of centres did not meet national standards for time to endoscopy. Strategic initiatives involving acute care services may be necessary to improve this outcome.

How long do percutaneous endoscopic gastrostomy feeding tubes last? A retrospective analysis.

BACKGROUND: Percutaneous endoscopic gastrostomy (PEG) tubes allow for long-term enteral feeding. Disk-retained PEG tubes may be suitable for long-term usage without planned replacement, but data on longevity are limited. We aimed to assess the rates and predictors of PEG longevity and post-PEG mortality. DESIGN: Single-centred retrospective cohort study of patients with disk-retained (Freka) PEG tubes. METHODS: All patients undergoing PEG between 2010 and 2013 were identified, and retrospective analysis of outcomes until 2017 (median 1062 days) was performed. Time-to-event data were plotted using Kaplan-Meier curves, with predictors of survival derived from multivariate Cox-regression analyses. RESULTS: 277patients were studied, with a median age of 74 years (IQR 59-82). PEG tube failure occurred in 17.4%, due to: buried bumper syndrome (7.0%), split/broken tube (6.3%), peristomal infection (1.8%) and dislodged tube (1.1%). PEG tube longevity was 95.1% (1 year) and 68.5% (5 year), with age <70 (HR 2.65, 95% CI 1.25 to 5.62, p=0.011) being predictive of PEG failure. Post-PEG mortality was 10.5% (30 day), 35.4% (1 year) and 59.7% (5 year). Age ≥70 was associated with mortality (HR 2.79, 95% CI 1.92 to 4.05, p<0.001), whereas PEG failure (HR 0.46, 95% CI 0.27 to 0.77, p=0.003) and elective PEG removal (HR 0.23, 95% CI 0.08 to 0.64, p=0.005) were associated with reduced mortality. CONCLUSIONS: 68.5% of PEG tubes remain intact after 5 years. Younger age was associated with earlier PEG failure, whereas younger age, PEG replacement and elective PEG tube removal were associated with improved survival. These data may inform future guidance for elective PEG tube replacements.