Publications by authors named "John A Karagiannis"

Background: Real-world data on management patterns and long-term outcomes of patients with inadequately controlled Crohn's disease (CD) in Greece are scarce.

Methods: This was a multicenter, prospective observational study of 18-65-year-old CD patients whose physicians judged that their current therapy was inadequate to control their condition and therefore decided to switch treatment. Data were collected at enrollment (time of switch), and 30, 54 and 104 weeks post-enrollment.

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Background: The efficacy and applicability of molecular testing to guide the selection of antibiotics in triple ( eradication regimens have not been reported. We tested a 7-day, genotypic resistance-guided triple eradication therapy in a high-resistance setting.

Methods: Consecutive dyspeptic patients with infection were prospectively enrolled.

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Background And Study Aims: Cold snare polypectomy is an established method for the resection of small colorectal polyps; however, significant incomplete resection rates still leave room for improvement. We aimed to assess the efficacy of cold snare endoscopic mucosal resection (CS-EMR), compared with hot snare endoscopic mucosal resection (HS-EMR), for nonpedunculated polyps sized 6 - 10 mm.

Patients And Methods: This study was a dual-center, randomized, noninferiority trial.

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Background: Evaluation of factors correlating with the quality of bowel preparation (QBP) is critical to ensure high-quality colonoscopy.

Objectives: We sought to determine whether the time interval between the start of conventional polyethylene glycol (PEG) ingestion and the onset of bowel activity is predictive of QBP.

Methods: Consecutive adult outpatients attending colonoscopy were prospectively assessed.

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Lynch syndrome (LS) is characterised by the development of colorectal cancer, endometrial cancer and various other cancers, and is caused by a mutation in one of the mismatch repair genes: MLH1, MSH2, MSH6 or PMS2. In 2007, a group of European experts (the Mallorca group) published guidelines for the clinical management of LS. Since then substantial new information has become available necessitating an update of the guidelines.

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