Pulmonary complications in patients undergoing coronary artery bypass grafting at a hospital in Maceio, Brazil [I] Complicações pulmonares em pacientes submetidos à cirurgia de revascularização do miocárdio em um hospital de Maceió [A] Ana Carolina do Nascimento Calles [a] , Jéssyca Lane Fausto Lira [a] , Karolyne Soares Barbosa Granja [a] , Jaime Dativo de Medeiro [a] , Adoniran Rodrigues Farias [b] , Ricardo César Cavalcanti [c]* [a] Centro Universitário Tiradentes (UNIT), Maceió, AL, Brazil [b] Universidade Estadual de Ciências da Saúde de Alagoas (UNCISAL), Maceió, AL, Brazil [c] Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil [R] Abstract Introduction: Despite technological advances aimed at reducing complications and hospital stay, pulmonary complications in the postoperative period of CABG surgery remain one of the most important causes of morbidity. These may be related to the patient's quality of life, the use of cardiopulmonary bypass, as well as a decline in postoperative respiratory muscle strength, contributing to the emergence of restrictive respiratory disorders. Objective: Assess pulmonary complications in patients undergoing coronary artery bypass graft surgery and identify their association with risk factors. Methods: A retrospective study with non-probability convenience sampling of 168 patients at the Hospital Calles ACN, Lira JLF, Granja KSB, Medeiro JD, Farias AR, Cavalcanti RC. 662 failure (1.2%); and bronchopneumonia (0.6%). Female patients and those aged 70 years or older experienced more pulmonary complications after surgery. Conclusion: Women and patients older than 70 years had the most severe postoperative pulmonary complications, the most common being pleural effusion and atelectasis.