Please select the eligibility criteria that correspond to the clinical trial below.
Title: Twice-daily Oral Direct Thrombin Inhibitor Dabigatran Etexilate in the Long-term Prevention of Recurrent Symptomatic Proximal Venous Thromboembolism in Patients With Symptomatic Deep-vein Thrombosis or Pulmonary Embolism.
Brief Summary: The primary efficacy objective is to evaluate whether dabigatran etexilate is superior to placebo in the long-term prevention of recurrent symptomatic venous thrombo-embolism (VTE) in patients with symptomatic deep-vein thrombosis (DVT) or pulmonary embolism (PE) who completed 6 to 18 months of treatment with vitamin K antagonist (VKA).


Options:
A: Inclusion criteria:

* Male or female patients aged \>= 18 years.
* Patients eligible for treatment with dabigatran etexilate 150 mg b.i.d. according to local label.
* Treatment naïve patients or patients on oral anticoagulant treatment with a Vitamin K Antagonist (VKA), dabigatran etexilate, rivaroxaban, apixaban or edoxaban.
* Patient with paroxysmal or persistent NVAF with a planned catheter ablation for AF unless it is performed an investigational ablation technique.
* AF must have been documented at least once either by ECG, Holter monitoring, loop recorder, telemetry, trans-telephonic monitoring, pacemaker or cardiac defibrillator read outs within 24 months prior to screening (Visit 1).
* The patient must be able to give informed consent in accordance with International Conference on Harmonisation (ICH) Good Clinical Practice (GCP) guidelines and local legislation and/or regulations.

Exclusion criteria:

* Patients with permanent AF.
* Patients with AF felt to be secondary to an obvious reversible cause such as, but not limited to, an acute myocardial infarction, pulmonary embolism, recent surgery, pericarditis or thyrotoxicosis.
* Patients with Left Atrium (LA) size \>= 60 mm
* Patients with contraindications to systemic anticoagulation with heparin, warfarin or dabigatran etexilate
* Patients with a known allergy to warfarin tablets and it excipients or to dabigatran etexilate or its excipients
* Mechanical or biological heart valve prosthesis
* Severe renal impairment (estimated Creatinine Clearance (CrCl) calculated by Cockcroft-Gault equation) \<30mL/min at screening
* Stroke within 1 month prior to screening visit
* Major surgery per investigator judgement within the previous month prior to screening.
* Patient has received an organ transplant or is on a waiting list for an organ transplant
* History of intracranial haemorrhage, intraocular, spinal, retroperitoneal or non-traumatic intra-articular bleeding
* Gastrointestinal haemorrhage within one month prior to screening, unless, in the opinion of the investigator, the cause has been permanently eliminated (e.g. by surgery).
* Major bleeding episode (ISTH definition) one month prior to the screening visit.
* Haemorrhagic disorder or bleeding diathesis (e.g. von Willebrand disease, haemophilia A or B or other hereditary bleeding disorder, history of spontaneous intra-articular bleeding, history of prolonged bleeding after surgery/intervention)
* Anaemia (haemoglobin \<10g/dL) or thrombocytopenia including heparin-induced thrombocytopenia (platelet count \<100 x 10\^9/L) at screening
* Recent malignancy or radiation therapy (\<=6 months prior to screening) unless, in the opinion of the Investigator, the estimated life expectancy is greater than 36 months
* Active liver disease as indicated by at least one of the following:

  -- Prior and persistent alanine aminotransferase or Aspartate transaminase or alkaline phosphatase \>3x upper limit of normal and/or -- Known active hepatitis C and/or -- Known active hepatitis B and/or -- Known active hepatitis A
* Need for continued treatment with systemic ketoconazole, itraconazole, posaconazole, cyclosporine, tacrolimus, dronedarone, rifampicin, phenytoin, carbamazepine, St. John's Wort or any cytotoxic/myelosuppressive therapy.
* Pre-menopausal (last menstruation \<=1 year prior to screening) who:

  * Are pregnant or breast-feeding or plan to become pregnant during study or
  * Are not surgically sterile or
  * Are of child bearing potential and not practising two acceptable method of birth control, or do not plan to continue practising an acceptable method of birth control throughout the trial
* Patients who have participated in another trial with an investigational drug or device within the past 30 days preceding the screening visit or are participating in another trial (patients participating in an observational study only will not be excluded)
* Patients not willing or able to comply with the protocol requirements or considered unreliable by the Investigator concerning the requirements for follow-up during the study and/or compliance with study drug administration, who have a life expectancy less than the expected duration of the trial due to concomitant disease and/or subjects who are institutionalised due to official or court orders and/or vulnerable subjects who are dependent on the Sponsor or the Investigator or the site, or patients who have any condition which in the opinion of the Investigator, would not allow safe participation in the study (e.g. drug addiction, alcohol abuse).
B: Inclusion Criteria:

* Confirmed acute symptomatic proximal DVT without symptomatic PE

Exclusion Criteria:

* Legal lower age limitations (country specific)
* Thrombectomy, insertion of a caval filter, or use of a fibrinolytic agent to treat the current episode of DVT and/or PE
* Other indication for VKA than DVT and/or PE
* The pre-randomization anti-coagulant treatment (Criteria # 4) has been prolonged from 36 hours to a maximum of 48 hours.
C: Inclusion Criteria:

* Consecutive patients with a newly diagnosed, objectively confirmed: symptomatic or unsuspected, proximal lower-limb DVT or symptomatic PE or unsuspected PE in a segmental or more proximal pulmonary artery;
* Any type of cancer (other than basal-cell or squamous-cell carcinoma of the skin, primary brain tumor or intracerebral metastasis and acute leukemia);
* Signed and dated informed consent of the patient, available before the start of any specific trial procedure.

Exclusion Criteria:

* age \<18 years;
* ECOG Performance Status III or IV;
* life expectancy of less than 6 months;

Related to anticoagulant treatment:

* administration of therapeutic doses of LMWH, fondaparinux, or unfractionated heparin (UFH) for more than 72 hours before randomization;
* 3 or more doses of a vitamin K antagonist before randomization;
* thrombectomy, vena cava filter insertion, or thrombolysis used to manage the index episode;
* indication for anticoagulant treatment for a disease other than the index VTE episode;

Related to bleeding risk:

* thienopyridine therapy (clopidogrel, prasugrel, or ticagrelor) or aspirin over 165 mg daily or dual antiplatelet therapy;
* active bleeding or a high risk of bleeding contraindicating anticoagulant treatment;
* recent (in the last 1 month prior to randomization) brain, spinal or ophthalmic surgery
* hemoglobin level lower than 8 g/dL (5.0 mmol/L) or platelet count \<75x10\^9/L or history of heparin induced thrombocytopenia;
* creatinine clearance \< 30 ml /min based on the Cockcroft Gault equation;
* acute hepatitis, chronic active hepatitis, liver cirrhosis; or an alanine aminotransferase level 3 times or more and/or bilirubin level 2 times or more higher the upper limit of the normal range;
* uncontrolled hypertension (systolic BP\> 180 mmHg or diastolic BP \> 100 mmHg despite antihypertensive treatment);
* concomitant use of strong inhibitors or inducers of both cytochrome P-450 3A4 and P-Glycoprotein;

Standard criteria:

* bacterial endocarditis;
* hypersensitivity to the active substance or to any of the excipients of study drug;
* patients participation in other pharmaco therapeutic program with an experimental therapy that is known to effect the coagulation system;
* childbearing potential without proper contraceptive measures, pregnancy, or breast feeding;
* any condition that as judged by the Investigator would place the subject at increased risk of harm if he/she participated in the study.
D: 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

Answer: D