Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Controlled, Randomized, Parallel, Multicentre Study to Assess Safety and Tolerability of the Oral Direct Thrombin Inhibitor AZD0837, Given as an Extended-release Formulation, in the Prevention of Stroke and Systemic Embolic Events in Patients With Atrial Fibrillation
Brief Summary: The main purpose of this study is to provide dose-guiding information by assessing the safety and tolerability of 4 different dosing regimens of an extended-release (ER) formulation of AZD0837 compared with well-controlled, dose-adjusted Vitamin-K antagonists (VKA) (aiming for an international normalized ratio (INR) 2.0 to 3.0) in patients with non-valvular atrial fibrillation (AF) with one or more additional risk factors for stroke.


Options:
A: Inclusion criteria

Inclusion criteria (selected):

* Patients (18 years or older) scheduled to undergo a primary, unilateral, elective total hip replacement
* Written Informed Consent

Exclusion criteria

Exclusion criteria (selected):

* Patients with an excessive risk of bleeding, for example because of history of bleeding diathesis major surgery or trauma within the last 3 months history of haemorrhagic stroke or any of the following intracranial pathologies: bleeding, neoplasm, AV malformation or aneurysm clinically relevant bleeding or gastric / duodenal ulcer within the last 6 months treatment with anticoagulants within 7 days prior to joint replacement surgery or anticipated need during the study treatment period thrombocytopenia.
* Active malignant disease or current cytostatic treatment
* Known severe renal insufficiency
* Liver disease expected to have any potential impact on survival, or elevated AST or ALT \> 2x upper limit of normal
* Recent unstable cardiovascular disease or history of myocardial infarction within the last 3 months
* Pre-menopausal women who are pregnant or nursing, or are of child-bearing potential and are not practising or do not plan to continue practising acceptable methods of birth control
* Allergy to radio opaque contrast media or iodine, heparins (incl. heparin induced thrombocytopenia) or dabigatran
* Contraindications to enoxaparin
* Participation in a clinical trial during the last 30 days
B: Inclusion Criteria:

* Nonvalvular AF (NVAF) verified by at least two ECGs in the last year separated by at least one week.
* Previous cerebral ischemic attack (stroke or TIA, \>30 days prior to randomization)
* Previous systemic embolism.
* Symptomatic congestive heart failure (CHF)
* Impaired left ventricular systolic function
* Diabetes mellitus
* Hypertension requiring anti-hypertensive treatment.

Exclusion Criteria:

* AF secondary to reversible disorders, eg hyperthyroidism, drugs and pulmonary embolism
* Known contraindication to VKA treatment
* Presence of a valvular heart disease, mechanical heart valves, active endocarditis, left ventricular aneurysm or thrombus, atrial myxoma or any condition other than AF requiring chronic anticoagulation treatment
* Conditions associated with increased risk of major bleeding for example: history of intracranial bleeding, history of bleeding gastrointestinal disorder or major surgical procedure or trauma two weeks prior to randomization
C: Inclusion criteria:

1. Patients with confirmed symptomatic PE or proximal DVT of the leg(s) who have been treated for 6 to 18 months with therapeutic dosages (intended INR between 2-3) of an oral VKA (e.g. warfarin, acenocoumarol, phenprocoumon, or fluindione) or RE-COVER study medication up to the moment of screening for the current study.
2. Written informed consent

Exclusion criteria:

1. Younger then 18 years of age
2. Indication for VKA other than DVT and/or PE
3. Patients in whom anticoagulant treatment for their index PE or DVT should be continued
4. Active liver disease or liver disease decreasing survival (e.g. acute hepatitis, chronic active hepatitis, cirrhosis) or ALAT \> 3 x ULN
5. Creatinine clearance \< 30 ml/min
6. Acute bacterial endocarditis
7. Active bleeding or high risk for bleeding.
8. Uncontrolled hypertension (investigators judgement)
9. Intake of another experimental drug within the 30 days prior to randomization into the study
10. Life expectancy \<6 months
11. Childbearing potential without proper contraceptive measures\*, pregnancy or breast feeding
D: Inclusion criteria:

1. Completed study 1160.113 per protocol
2. Continuing need for anticoagulation

Exclusion criteria:

1. uncontrolled hypertension
2. severe renal impairment
3. active liver disease
4. increased risk of bleeding

Answer: B