title: Ventilatory profile of patients undergoing CABG surgery.
abstract: OBJECTIVE
  To assess the ventilatory, radiological and clinical profile of patients undergoing elective CABG in a cardiology reference hospital in South Brazil.
  
  
  METHODS
  This study included 108 patients undergoing elective CABG surgery, in the period between April 2006 and February 2007 at the Cardiology Institute of Rio Grande do Sul (IC-FUC). The surgical procedure involved median sternotomy, and the saphenous vein and/or internal mammary artery were used for grafting. Lung volume and capacity, as well as the possible existence of ventilatory changes, were assessed by spirometry, and the ventilatory muscle strength was assessed using a vaccum manometer. All evaluations were performed on the preoperative period and on the sixth postoperative day.
  
  
  RESULTS
  Preoperative levels of FEV1 and FVC were significantly reduced on the 6th postoperative day (P<0.001) when compared to the preoperative levels. A significant decrease of ventilatory muscle strength, expressed as maximum inspiratory and expiratory pressures (MIP and MEP), was also observed from the pre- to the sixth postoperative day (P<0.001). Pulmonary events were more frequent on the 6th postoperative day (78%) than on the 1st postoperative day (40%).
  
  
  CONCLUSIONS
  Patients undergone CABG surgery present important reduction in pulmonary volume and capacity, as well as on the ventilatory muscle strength during the postoperative period.
authors.affiliation: Cardiology Institute of Rio Grandedo Sul/University Foundation of Cardiology, Research Unit of IC/FUC- Porto Alegre, RS, Brazil.
authors.forename: Katiane Tremarin
authors.initials: KT
authors.lastname: Morsch
authors.forename: Camila Pereira
authors.initials: CP
authors.lastname: Leguisamo
authors.forename: Marcelo Dias
authors.initials: MD
authors.lastname: Camargo
authors.forename: Christian Correa
authors.initials: CC
authors.lastname: Coronel
authors.forename: Waldo
authors.initials: W
authors.lastname: Mattos
authors.forename: Leila D N
authors.initials: LD
authors.lastname: Ortiz
authors.forename: Gustavo Glotz de
authors.initials: GG
authors.lastname: Lima
mesh_terms: D001026:Coronary Artery Bypass / Q000379:methods; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery; D004812:Epidemiologic Methods; D005260:Female; D005541:Forced Expiratory Volume / Q000502:physiology; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care; D011300:Preoperative Care; D011859:Radiography; D012132:Respiratory Muscles / Q000502:physiology; D013147:Spirometry; D014797:Vital Capacity / Q000502:physiology