Learning Curves for Colonoscopy: A Prospective Evaluation of Gastroenterology Fellows at a Single Center

BACKGROUND/AIMS: Colonoscopy training programs and the minimal experience with colonoscopy required to be considered technically competent are not well established. The aim of this study was to determine the colonoscopy learning curves and factors associated with this difficult procedure at a single center. METHODS: A total of 3,243 colonoscopies were performed by 12 first-year gastroenterology fellows, and various clinical factors were assessed prospectively for 22 months. Acquisition of competence (success rate) was evaluated based on two objective criteria: (i) the adjusted completion rate (>90%) and (ii) cecal intubation time (20 minutes). Surgery of the uterus and ovaries was significantly correlated with delayed cecal intubation time, but not after sufficient colonoscopy experience. CONCLUSIONS: The minimum number of procedures to reach technical competence was 200. The cecal intubation time was longer in female and older patients.

Clinical Factors That Potentially Affect the Treatment Outcome of Helicobacter pylori Eradication Therapy with using a Standard Triple Regimen in Peptic Ulcer Patients / 대한소화기내시경학회지

BACKGROUND/AIMS: Proton pump inhibitor (PPI) based triple therapy for Helicobacter pylori eradication has an approximately 20% treatment failure rate. The aim of this study is to examine the clinical factors that influence eradication of H. pylori in patients with peptic ulcers. METHODS: We reviewed the medical records of 597 endoscopy-proven peptic ulcer and H. pylori-positive patients who were treated at our hospital between July 2004 and March 2007. The eradication rate and the effect of age, gender, smoking, alcohol drinking, activity and the location of ulcer and the kind of PPIs were examined. RESULTS: 597 patients were treated with one-week triple therapy (PPI, amoxicillin 1 g, clarithromycin 500 mg all twice daily). The overall eradication rate was 80.2%. Eradication was significantly more successful in the patients with an age under 60, and in patients over 60 and who had a duodenal ulcer (83.2% vs 73.2%, respectively, p=0.005) or a gastric ulcer (82.5% vs 73.6%, respectively, p=0.041). There was no statistically significant difference according to gender, smoking, alcohol, the activity of the ulcer and the kind of PPIs. CONCLUSIONS: An age over 60 and gastric ulcer were associated with a lower H. pylori eradication rate in patients with peptic ulcers. Therefore, H. pylori eradication in old age patients and in patients with gastric ulcer should be managed differently and the treatment duration should be extended or a new treatment regime developed to overcome the lower eradication rate.

A Case of Acute Pancreatitis Associated with Aberrant Cystic Duct Opening into the Right Hepatic Duct / 대한소화기내시경학회지

Congenital anomalies of the pancreaticobiliary structure may go undetected until adulthood, and they can be the cause of unexplained jaundice, abdominal pain, nausea and vomiting. In addition to such associated disease, as cholangitis, gallstone, cholangiocarcinoma and pancreatitis, recognition of these variant anatomies is clinically important for planning surgery and for preventing inadvertent surgical injury. Although congenital abnormalities and variations of the biliary ducts are common, and variations in the drainage and course of the cystic duct are also frequently seen, variation of the cystic duct opening into the right hepatic duct is rare; further, it is important to avoid erroneous ligation of the hepatic duct during surgery. We report here on a case of aberrant cystic duct opening into the right hepatic duct along with acute pancreatitis.