Please select the eligibility criteria that correspond to the clinical trial below.
Title: The Effect and Mechanism of Bronchoscopic Lung Volume Reduction by Endobronchial Valve in Korean Emphysema Patients
Brief Summary: To assess efficacy of bronchoscopic lung volume reduction in Korean emphysema patients


Options:
A: Inclusion Criteria:

* Bilateral emphysema on Chest CT Scanner
* Post bronchodilator FEV1 \< 50 %
* Total Lung Capacity \> 100 %
* Residual Volume \> 220 %
* Dyspnea score between 2 and 4 based on the mMRC scale
* Stopped cigarette smoking for more than 8 weeks
* Pulmonary rehabilitation within the previous twelve months
* Consent form signed
* Covered by Medical Insurance

Exclusion Criteria:

* Post bronchodilator FEV1 \< 15%
* Post-bronchodilator change in FEV1 \> 20%
* Severe recurrent respiratory infections requiring more than 2 hospitalization stays within the past twelve months
* COPD exacerbation requiring hospital stay within 3 months
* Pulmonary Hypertension (Pulmonary systolic pressure \>50 mmHg on cardiac echo)
* Patient unable to perform a 6-min walking test in room air
* Giant bulla of more than 1/3 of the lung field on Chest CT
* Strictly homogeneous emphysema on Chest CT
* Clinically significant bronchiectasis
* Past history of lobectomy, lung volume reduction surgery, lung transplantation
* Any extrapulmonary diseases compromising survival or evaluation within the protocol (severe cardiac disease, severe renal insufficiency, cancer...)
* Lung carcinoma or pulmonary nodule on CT scan requiring Chest CT scan follow-up
* Contra-indication to general anesthesia
* Oral anticoagulant treatment (antivitamin K)
* Allergy to nitinol
* Inclusion in an other study assessing respiratory treatments
* Patient protected by the law
B: Inclusion Criteria:

* Candidates have mostly upper lobe, severe emphysema.
* Must be able to participate in standard exercise testing.
* Willing to abstain from cigarette smoking for 4 months prior and during the entire trial.
* Willing to participate in a randomized, blinded study and complete the required follow-up visits during the study period.
* Willing to participate in multiple visits to a medical center for health assessment tests.
* Willing to have a minimum of one overnight stay in the hospital.

Exclusion Criteria:

* Evidence of another co-existing major medical disease.
* Unable to tolerate, flexible bronchoscopy procedures.
* Active asthma, chronic bronchitis.
* Diffuse emphysema pattern, alpha 1-antitrypsin deficiency.
* Has had prior lung volume reduction surgery.
C: Inclusion Criteria:

1. Age: \> 40 and ≤ 75 years old
2. Diagnosis of heterogeneous emphysema with upper lobe predominance
3. FEV1 \< 45% predicted
4. TLC \> 100% predicted
5. RV \> 150% predicted
6. 6-minute walk test \> 140 meters
7. mMRC ≥ 2 (mMRC)
8. Non-smoking for 3 months
9. Optimized medical management and completed pulmonary rehabilitation

Exclusion Criteria:

1. Known α-1-antitrypsin deficiency
2. BMI \< 15 kg/m2 or \> 35 kg / m2
3. History of pneumothorax within previous 18 months
4. History of heart and / or lung transplant, lung volume reduction surgery (LVRS), median sternotomy, bullectomy, and/or lobectomy
5. Respiratory infections or recurring COPD exacerbations \> 3 hospitalizations in past 12 months or active infection
6. History of the (EF) ≤ 40%; Stroke; Unstable Myocardial Ischemia; FEV1 \< 15% predicted; DLCO \< 20% predicted; of pulmonary hypertension; indwelling pacemaker or implantable cardiac defibrillator (ICD); pregnancy or breastfeeding
D: Inclusion Criteria:

* Age more than 40 and below 75
* Patients with smoking history and heterogenous emphysema on chest CT
* Advanced emphysema (FEV1/FVC \<70%, FEV1 of 15-45%, TLC \>100% and RV \>150% predicted)
* Persistent symptoms refractory to treatment
* PaCO2 \<50 mmHg and PaO2 \>45 mmHg
* Body mass index (BMI) ≤31.1 kg/m2 (men) or ≤32.3 kg/m2 (women)
* 6-min walk distance \>140 m after pulmonary rehabilitation

Exclusion Criteria:

* Diffusing capacity (DLco) \<20% predicted
* Large bullae (exceed 5 cm)
* Alpha-1 antitrypsin deficiency
* History of thoracotomy
* Excessive sputum production (throughout the week)
* Severe pulmonary hypertension ( systolic pulmonary artery pressure ≥ 45mmHg, estimated from the peak velocity of a tricuspid regurgitant jet by doppler echocardiography)
* Acute respiratory infection
* Unstable angina, congestive heart failure, or acute myocardial infarction in 6 months

Answer: D