Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase III, Randomised, Double Blind, Parallel-group Study of the Efficacy and Safety of Oral Dabigatran Etexilate 150 mg Twice Daily Compared to Warfarin (INR 2.0-3.0) for 6 Month Treatment of Acute Symptomatic Venous Thromboembolism (VTE), Following Initial Treatment (5-10 Days) With a Parenteral Anticoagulant Approved for This Indication.
Brief Summary: The purpose of this trial is to determine the comparative safety and efficacy of dabigatran etexilate 150 mg bid administered orally and warfarin as needed (pro re nata - prn) to maintain an International Normalised Ratio (INR) of 2.0-3.0 for 6 month treatment of acute symptomatic venous thromboembolism (VTE), following initial treatment (5-10 days) with a parenteral anticoagulant approved for this indication. This trial aims to demonstrate non-inferiority of dabigatran compared with warfarin in patients with acute symptomatic VTE. After achieving non-inferiority, this trial also aims to establish superiority (by means of hierarchical tests) of dabigatran over warfarin.


Options:
A: Inclusion Criteria:

* Patients must have documented atrial fibrillation on 2 separate occasions within 6 months before screening
* History of a prior stroke, transient ischemic attack or non-neurologic systemic embolism believed to be cardiac in origin, or at least two of the following risk factors: heart failure, hypertension, age 75 years or greater, diabetes mellitus

Exclusion Criteria:

* Significant mitral stenosis
* Transient atrial fibrillation caused by a reversible disorder
* Active internal bleeding
* Severe disabling stroke
* History of intracranial bleeding
* Hemorrhagic disorders
B: Inclusion Criteria:

* Age ≥ 20 years outpatient (regardless of sex)
* Patients diagnosed as non-valvular atrial fibrillation (NVAF)
* One or more following risks of stroke.

Exclusion Criteria:

* Recent cerebral infarction (includes TIA) within 4 weeks of week 0.
* Subjects who have or are suspected to have a serious/hereditary bleeding tendency, such as disseminated intravascular coagulation syndrome (DIC), congenital platelet dysfunction and von Willebrand disease (those suspected from the family history are included).
* Subjects who have or are suspected to have a serious/hereditary thrombogenic tendency (those suspected from the family history are included) or those who require continuation of the Warfarin therapy.
C: Inclusion criteria

1. Acute deep vein thrombosis (DVT) of the leg involving proximal veins, and/or pulmonary embolism (PE) iin patients for whom at least 6 months of anticoagulant therapy is considered appropriate
2. Male or female, being 18 years of age or older
3. Written informed consent for study participation

Exclusion criteria

1. Overt symptoms of VTE for longer than 2 weeks prior to enrolment
2. PE satisfying at least one of the following criteria: Haemodynamic instability, embolectomy is indicated or performed, thrombolytic therapy is indicated or performed, or suspected source of PE is other than the legs
3. Actual or anticipated use of vena cava filter
4. Contraindications to anticoagulant therapy
5. Patients who in the investigators opinion should not be treated with warfarin
6. Allergy to heparins or other alternate approved therapy used for initial treatment, warfarin or dabigatran, or to one of the excipients included in these medications
7. Patients who in the investigators judgement are perceived as having an excessive risk of bleeding
8. Known anaemia
9. Need of anticoagulant treatment for disorders other than VTE
10. Recent unstable cardiovascular disease
11. Elevated AST or ALT \> 2x ULN
12. Liver disease expected to have any potential impact on survival
13. Patients who have developed transaminase elevations upon exposure to ximelagatran
14. Severe renal impairment
15. Women who are pregnant, nursing, or of childbearing potential who refuse to use a medically acceptable form of contraception
16. Participation in another clinical trial with an investigational drug during the last 30 days or previous participation in this study
17. Patients considered unsuitable for inclusion by the investigator
D: Inclusion Criteria:

* Males and females ≥ 18 yrs with atrial fibrillation (AF) and one or more of the following risk factors for stroke:
* Age ≥ 75, previous stroke
* transient ischemic attack (TIA) or Systemic Embolism (SE)
* Symptomatic congestive heart failure or left ventricular dysfunction with left ventricular ejection fraction (LVEF) ≤ 40%
* Diabetes mellitus or hypertension requiring pharmacological treatment

Answer: C