Please select the eligibility criteria that correspond to the clinical trial below.
Title: Outpatient Treatment of Low-risk Patients With Pulmonary Embolism: a Randomized-controlled Trial
Brief Summary: The purpose of this randomized clinical trial is to determine whether outpatient treatment is as effective and safe as inpatient treatment among low-risk patients with pulmonary embolism.


Options:
A: Inclusion Criteria:

* outpatient with a pulmonary embolism, confirmed by locally approved guidelines
* aged 18 years and above
* written informed consent

Exclusion Criteria:

* hemodynamic or respiratory instability defined as one of the following; hypotension RR systolic\< 90 mmHg,pulse rate\> 100 bpm, need for oxygen therapy to maintain oxygen saturation above 90 %, collapse
* illness unrelated to PE for which the patient would require hospitalization
* pain requiring intravenous narcotics
* thrombolysis
* active bleeding or thrombopathy
* pregnancy
* in hospital patients
* physical or psychiatric inability for home treatment
* no support system at home renal insufficiency
B: Inclusion Criteria:

* The consecutive outpatients subjects diagnosed of PE at 10 different Spanish hospitals.
* A score of 2 or under in our prediction rule (risk score for short-term)
* Signed written Informed consent

Exclusion Criteria:

* A score over 2 in our prediction rule
* Patients with a PE requiring thrombolysis or surgical thrombectomy
* Patients with right ventricular dyskinesia in echocardiography at 48 hours from heparin therapy. (It is not necessary echocardiography for the model of discharge at 5 days)
* Troponin level over 0,1 g/L
* Patiens requiring oxygen therapy or under 93% in oxygen saturation level.
* Patients requiring intravenous analgesic therapy
* Patients with some medical or surgical conditions requiring to stay at hospital
* Patients with advanced chronic cardiovascular diseases (dyspnea III-IV NYHA)
* Patients with advanced chronic respiratory diseases (several COPD criteria of GOLD with FEV1\< 50%)
* Documented congenital or acquired bleeding tendency /disorder (s)
* Documented current ulceration or angiodysplastic gastrointestinal disease
* Hemorrhagic stroke or recent (\< 3 months prior to randomization) brain, spinal, or ophthalmological surgery.
* Recent surgery \< 3 days
* Pregnancy
* Several Obesity (CMI over 30)
* Patients could not complete the treatment at home.
* Exclusion criteria related to study procedures
* Life expectancy \< 3 months
C: Inclusion Criteria:

1. Pulmonary Embolism, diagnosed by CTA or high probability VQ Scan
2. Total Pulmonary Embolism Severity Index (PESI) score \<86

Exclusion Criteria:

1. Massive Pulmonary Embolism: Hypotension with signs of right heart strain on CTA or Echocardiogram
2. Sustained Systolic Blood Pressure (SBP) \<95 mmHg during Emergency Department or observation stay.
3. Age \<18
4. Pregnant
5. Renal insufficiency (Creatinine Clearance \<30)
6. Hepatic Dysfunction (AST/ALT/ALP \> 3 times upper limit of normal)
7. Unreliable social situation or inability to follow up
8. Contraindication to enoxaparin, warfarin and rivaroxaban
9. Atrial or ventricular dysrhythmia(s)
D: Inclusion Criteria:

* age \>18 years
* objectively confirmed diagnosis of pulmonary embolism
* patients at low-risk (Pulmonary Embolism Severity Index score \<=85)

Exclusion Criteria:

* patients at high-risk (Pulmonary Embolism Severity Index score \>85)
* presence of hypoxemia (arterial SO2 \<90% measured by pulse oximetry or an paO2 on room air of \<60 mm Hg measured by blood gas analysis)
* systolic blood pressure of \<100 mm Hg
* chest pain necessitating parenteral opioid administration
* active bleeding or at high-risk of major bleeding (stroke during the preceding 10 days, gastrointestinal bleeding during the preceding 14 days, or platelets \<75,000 per mm3)
* renal failure (creatinine clearance of \<30 ml/minute based on the Cockcroft-Gault formula)
* body mass \>150 kg
* history of HIT or allergy to heparins
* therapeutic oral anticoagulation (INR ≥2)at the time of pulmonary embolism diagnosis
* potential barriers to treatment adherence or follow-up (alcoholism, illicit current or recent drug use, psychosis, dementia, homelessness, lack of telephone access, transportation time to nearest ED \>45 minutes)
* known pregnancy
* imprisonment
* diagnosis of pulmonary embolism \>23 hours ago
* refusal or inability to provide informed consent
* prior enrollment in the study

Answer: D