Please select the eligibility criteria that correspond to the clinical trial below.
Title: Clinical Effect of the Association of Noninvasive Ventilation and High Flow Nasal Oxygen Therapy in Resuscitation of Patients With Acute Lung Injury. A Randomised Study (FLORALI Study)
Brief Summary: The aim of the study is to compare, in patients with acute respiratory failure/acute lung injury the efficacy of three different methods of oxygenation to prevent endotracheal intubation :

1. conventional oxygen therapy (O2 conventional)
2. high flow nasal oxygen therapy (O2-HFN)
3. association of high flow nasal oxygen therapy with non invasive positive pressure ventilation (O2-HFN/NPPV).


Options:
A: Inclusion Criteria:

* Low Risk Patients:
* Any extubated patients after tolerating a spontaneous breathing trial.
* High Risk Patients:
* Any extubated patients after \>48 hours under mechanical ventilation and any of the following:
* \>65 years

  * cardiac failure as the primary indication of mechanical ventilation
  * COPD
  * APACHE II \>12 points the extubation day
  * BMI \>30
  * inability to manage respiratory secretions

    * 1 failed spontaneous breathing trial
    * 1 comorbidity
    * 7 days under mechanical ventilation

Exclusion Criteria:

* \<18 years
* thacheotomized patients
* recent facial or cervical trauma/surgery
* active gastro-intestinal bleeding
* lack of cooperation and patients with any failed spontaneous breathing trial because of hypercapnia development.
B: Inclusion Criteria:

* Patients mechanically ventilated for \> 48 hours and at least one of the following:
* \>65 years
* cardiac failure as the primary indication of mechanical ventilation
* Chronic Obstructive Pulmonary Disease
* Severity score (APACHE II \>12 points) the extubation day
* Body Mass Index \>30
* inability to manage respiratory secretions
* 1 failed spontaneous breathing trial
* 1 comorbidity
* 7 days under mechanical ventilation

Exclusion Criteria:

* \<18 years
* tracheotomized patients
* recent facial or cervical trauma/surgery
* active gastro-intestinal bleeding
* lack of cooperation
* patients with any failed spontaneous breathing trial because of hypercapnia development.
C: Inclusion Criteria:

* Hypoxemic and no hypercapnic acute respiratory failure :
* severe dyspnea at rest with a respiratory rate \>25 breaths/min
* PaO2/FiO2 \<300
* PaCO2 \<45 mmHg,

Exclusion Criteria:

* age \<18 years
* NPPV contraindications
* past history of respiratory chronic disease (COPD, cystic fibrosis...)
* cardiac pulmonary edema
* Pre-defined intubation
* other than respiratory organ failure : systolic pressure \<90 mmHg,current treatment with epinephrine or norepinephrine, decreased level of consciousness ( Glasgow score ≤ 12)
* profound aplasia (white cells count \<1000/mm 3)
D: Inclusion Criteria:

* Age \>20 years
* Subjective dyspnea in room air
* SaO2\< 90% in room air
* Oxygen requirement for nasal cannula \< 6 L/m

Exclusion Criteria:

* Unstable vital signs

  * SBP \<90 mmHg
  * DBP \< 60 mmHg
  * Heart rate \> 120 bpm
  * Respiratory rate \> 30 bpm
  * Persistent dyspnea under oxygen therapy using NC
* Severe hypoxia

  * PaO2/FiO2\< 200 mmHg
* Unable to cooperate

  * Delirium
  * Reduced cognitive function

Answer: C