2.4. Exclusion criteria
thrombotic, bronchial asthma, asthma
CORONAVIRUS, BRONCHIAL ASTHMA, ASTHMA, PNEUMOTHORAX
The exclusion criteria are as follows: Cases of postoperative reconstructed intestinal tract. Continuous administration of oxygen by nasal cannula (home oxygen therapy). Patients who cannot breathe nose. Patients who cannot reduce or discontinue anti thrombotic drugs on the day before the endoscope. Patients with a history of pneumothorax. Patients who are positive for the new coronavirus (SARS-CoV-2) PCR test. Patients with a history of bronchial asthma attack or severe asthma. Other patients who are determined to be inappropriate as research subjects by the principal investigator.