A Prospective, Open Label Study Evaluating Two Management Strategies on Gastrointestinal Symptoms in Patients Newly on Treatment With Pradaxa for the Prevention of Stroke and Systemic Embolism With Non-valvular Atrial Fibrillation

Inclusion criteria:

1. Documented non-valvular atrial fibrillation (NVAF) for whom Pradaxa® (dabigatran etexilate) is indicated per the current local label, but who have not received treatment with Pradaxa® (dabigatran etexilate), or who have not been started on Pradaxa® (dabigatran etexilate) more than 7 days prior to potential enrolment in the study. NVAF may be documented by 12-lead electrocardiogram, rhythm strip, pacemaker/ implantable cardioverter defibrillator (ICD) electrograms or Holter monitoring
2. Male and female patients, age greater than or equal to 18 years at entry
3. Written, informed consent

Exclusion criteria:

1. History within one year of any of the following gastrointestinal (GI) disorders: dyspepsia, abdominal pain or discomfort, heartburn, indigestion, nausea, vomiting, gastritis, gastroesophageal reflux, or of use of proton pump inhibitors, histamine-2 receptor blockers or antacids.
2. GI bleeding within the past 2 years unless the cause has been permanently eliminated by medical therapy or by surgery(e.g., patients with peptic ulcer disease with endoscopically proven cure after therapy or lower GI bleeding due to diverticulosis cured by segmental colectomy are not excluded.)
3. Any history of symptomatic or endoscopically documented gastroduodenal ulcer, or diverticulitis
4. Contraindication to pantoprazole or other proton pump inhibitors, e.g. omeprazole, lansoprazole, rabeprazole, atnoprazole, esomeprazole
5. Contraindication to Pradaxa® (dabigatran etexilate) or known hypersensitivity to Pradaxa® (dabigatran etexilate) or its excipients
6. Hemorrhagic disorder, bleeding diathesis or active pathological bleeding
7. Need for anticoagulant treatment for disorders other than atrial fibrillation
8. Current treatment with rifampin
9. Creatinine clearance <15ml/min, or patients on renal replacement therapy (dialysis)
10. Pre-menopausal women (last menstruation less than or equal to 1 year prior to informed consent) who: are nursing or pregnant, or are of child bearing potential and are not practicing an acceptable method of birth control, or do not plan to continue using this method throughout the study. Acceptable methods of birth control include tubal ligation, transdermal patch, intra uterine devices/systems (IUDs/IUSs), oral implantable or injectable contraceptives, double barrier method and vasectomized partner.
11. Patients who have received an investigational drug in the past 30 days or are participating in another drug study
12. Patients considered unreliable by the investigator concerning the requirements for follow-up during the study
13. Any condition the investigator believes would not allow safe participation in the study