The main objective of the study is to study the early results of the maintenance of the pleura during the preparation of the internal breast artery in the maintenance of respiratory function and its role in the prevention of respiratory and hemorrhagic complications following its opening and comparison with the global studies conducted in this area. The study included patients with Cabg of both sexes aged between 40 years and 72 years of age who were the EF% from 40% in Tishreen University Hospital in Lattakia as a prospective study during 2017. The study included 30 patients divided into two groups: Fifteen patients had closed their pleura, and the second group (15) patients had pleural ulcers. Patients were followed within one week after surgery. We conclude from our study that hemorrhagic complications and need for blood transfusions and respiratory complications were significantly less when maintaining the pleura closed in the first group.