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Previous ERCP
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Known allergy or intolerance to one of the compounds used in the study
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Participation in another interventional trial during the previous four weeks
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Pregnancy and breast feeding
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current acute pancreatitis
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Renal insufficiency ≥ stage 4 (K/DOQI), i.e. MDRD-GFR < 30 ml/min/1,73 m2)
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Hyperthyroidism
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Symptomatic bradycardia <35 bpm
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Atrioventricular block > 1° or other cardial conduction defects
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Myasthenia gravis
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Liver cirrhosis Child C
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Overt coagulopathy
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Kidney stone diathesis (calcium-magnesium-ammonium-phosphate stones)
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Mental impairment, addiction or other disorders leading to the patients inability to understand the scope and possible consequences of a participation in a clinical trial
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Magnesium medication within 14 days before the procedure
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Inability to give informed consent |