This prospective, randomize study was conducted in a university hospital. Bronchoscopic lung volume reduction (BLVR) coil treatment has recently been introduced into clinical practice as an alternative for patients chronic obstructive pulmonary disease (COPD) with severe refractory heterorogenous emphysema to conventional medical treatment. Thirty two patients diagnosed with (COPD) with severe refractory heterorogenous emphysema undergoing BLVR coil treatment were included in the study. Seventeen procedure were performed under general anesthesia and fifteen procedure were performed under deep sedation-analgesia. in the general anesthesia group peak pressure, air leakage and end-tidal carbon dioxide were recorded. In the both groups pulse oximeter, transcutaneous carbondioxide, recovery time, bronchospasm, laryngospasm, pneumothorax, massive bleeding were recorded.

Inclusion Criteria:

• patients diagnosed with COPD with undergoing BLVR coil treatment.

Exclusion Criteria:

• patients who refuse to participate in the study