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1.  The effect of biliary sphincterotomy on serum cholesterol levels in postcholecystectomy patients: A pilot study 
BACKGROUND:
Cholesterol, in the form of bile salts, is reabsorbed from the small intestine via the enterohepatic circulation. Biliary sphincterotomy increases the delivery of bile to the terminal ileum. If the absorptive capacity is exceeded, cholesterol excretion may increase, resulting in a decrease in serum cholesterol levels and improvement in serum lipid profiles.
AIM:
To determine the effect of biliary sphincterotomy on serum cholesterol levels in patients without biliary obstruction.
PATIENTS AND METHODS:
Postcholecystectomy patients with type III biliary sphincter of Oddi dysfunction (disabling pancreatobiliary-type pain with normal liver function tests and bile duct diameter) who underwent biliary sphincterotomy were identified retrospectively from the endoscopic retrograde cholangiopancreatography database. Baseline (pre-endoscopic retrograde cholangiopancreatography) laboratory investigations (including cholesterol) were obtained for all patients. The effect of sphincterotomy on total cholesterol levels was noted in all patients who returned for subsequent procedures (temporary pancreatic stent removal or evaluation of recurrent symptoms), and also in the subgroup of patients with baseline hypercholesterolemia (higher than 5.18 mmol/L).
RESULTS:
In the present pilot study, the performance of biliary sphincterotomy was associated with a reduction in total serum cholesterol levels in postcholecystectomy patients without biliary obstruction. This was statistically significant in patients with a baseline cholesterol level higher than 5.18 mmol/L. A possible effect on low-and high-density lipoprotein concentrations was not evaluated. The influence of dietary changes and exercise were not accounted for.
CONCLUSION:
A prospective, controlled study involving a larger series of patients is required to determine whether biliary sphincterotomy lowers cholesterol levels and improves lipid profiles.
PMCID: PMC2657665  PMID: 17299610
Biliary sphincterotomy; Cholesterol levels; Postcholecystectomy
3.  A Randomized Trial of Rectal Indomethacin to Prevent Post-ERCP Pancreatitis 
The New England Journal of Medicine  2012;366(15):1414-1422.
Background
Preliminary research suggests that rectally administered nonsteroidal antiinflammatory drugs may reduce the incidence of pancreatitis after endoscopic retrograde cholangiopancreatography (ERCP).
Methods
In this multicenter, randomized, placebo-controlled, double-blind clinical trial, we assigned patients at elevated risk for post-ERCP pancreatitis to receive a single dose of rectal indomethacin or placebo immediately after ERCP. Patients were determined to be at high risk on the basis of validated patient- and procedure-related risk factors. The primary outcome was post-ERCP pancreatitis, which was defined as new upper abdominal pain, an elevation in pancreatic enzymes to at least three times the upper limit of the normal range 24 hours after the procedure, and hospitalization for at least 2 nights.
Results
A total of 602 patients were enrolled and completed follow-up. The majority of patients (82%) had a clinical suspicion of sphincter of Oddi dysfunction. Post-ERCP pancreatitis developed in 27 of 295 patients (9.2%) in the indomethacin group and in 52 of 307 patients (16.9%) in the placebo group (P = 0.005). Moderate-to-severe pancreatitis developed in 13 patients (4.4%) in the indomethacin group and in 27 patients (8.8%) in the placebo group (P = 0.03).
Conclusions
Among patients at high risk for post-ERCP pancreatitis, rectal indomethacin significantly reduced the incidence of the condition. (Funded by the National Institutes of Health; ClinicalTrials.gov number, NCT00820612.)
doi:10.1056/NEJMoa1111103
PMCID: PMC3339271  PMID: 22494121

Results 1-3 (3)