Gastroenterology
Expert perspectives on IBD, liver disease, motility disorders, and GI diagnostic and therapeutic procedures.
Recent Discussions
What is your approach to explaining the role of the microbiome to patients with inflammatory arthritis?
The gut microbiota play a central role in modulating the inflammatory response. This is especially relevant to inflammatory arthritis, where the pathogenesis is quite well understood, especially as it relates to arthritis associated with inflammatory bowel disease. We also know that the diet is the ...
Have you used oral vancomycin as prophylaxis for C difficile infection in patients admitted for allogeneic hematopoietic cell transplant?
Yes, but only in patients with a history of C difficile in the previous year and starting at the time of initiation of broad-spectrum antibiotics (e.g., for fever and neutropenia). We use 125 mg daily.We are aware this practice may be controversial. To my knowledge, there is only one randomized tria...
What is the recommended surveillance approach for gastric intestinal metaplasia in patients without gastric cancer risk factors?
For U.S. patients with gastric intestinal metaplasia (GIM) without high-risk features, both the AGA and the ACG recommend testing for and eradication of Helicobacter pylori infection as the primary intervention for gastric cancer prevention, while routine surveillance endoscopy is not recommended in...
Do you routinely give prophylactic antibiotics prior to ERCP for biliary obstruction in light of recent studies suggesting a reduction of periprocedural infection?
I did not use to give antibiotics routinely prior to ERCP, and it seemed post-ERCP antibiotics were given at the discretion of the advanced endoscopist, but the results of this meta-analysis will likely change my practice so that I'll give all patients a dose of Ceftriaxone prior to the procedure to...
What is your treatment approach to a patient with budesonide refractory microscopic colitis and multiple sclerosis?
First job is to be sure the colitis is not attributable to any medication, particularly ocrelizumab. Meanwhile, have you given an adequate trial of bismuth?
In lean MASLD with sarcopenia or visceral adiposity despite normal BMI, how do you prioritize resistance training/nutrition versus pharmacologic cardiometabolic prevention, and what metrics do you track to decide if the plan is working?
I don't think this is a dichotomous choice, as resistance training and nutrition are complementary to pharmacologic cardiometabolic prevention. From a pharmacologic perspective, I would be cautious with incretin-based therapies as these may worsen sarcopenia, especially in an already lean (i.e., nor...
Can fatty liver disease present with elevations in alkaline phosphatase without other liver enzyme elevations (AST and ALT)?
It is very atypical but can occur. Patients usually have elevations in aminotransferases (usually ALT higher than AST) and there can be very mild concurrent elevations in alkaline phosphatase. An isolated alkaline phosphatase elevation should however prompt a more extensive serological work up as we...
Should GLP-1 agonists be held during chemotherapy?
I think there are several aspects to this question. First, is there evidence that as a class GLP-1 RAs increase the risk of cancer or worsen prognosis during cancer? I could find nothing to raise concerns about outcomes. One recent report even showed a decreased risk of some cancers with GLP-1 RA co...
What is you approach to C. difficile treatment in patients admitted for acute severe ulcerative colitis (ASUC) with a positive GDH and PCR with a negative EIA for toxins?
GDH is an excellent screening test, but not specific for C. diff. The PCR is for the toxin gene, but does not necessarily indicate that there is toxin production or clinical C. diff. So this combination does not likely represent active C. diff. However, the toxin assay has about a 15% false negative...
Is there a role for checking calprotectin, or other markers of inflammation, in decision making or monitoring in patients undergoing abdominopelvic radiotherapy with history of IBD?
The fecal calprotectin is neither sensitive nor specific enough to determine the protocol for radiotherapy. In fact, the very disease requiring the radiation may contribute to the results! If you need to know the condition of the rectosigmoid, a flexible sigmoidoscopy should be your best bet.