“…The incidence of pulmonary complications of patients on the preoperative period can be noted on the 1 st postoperative day and on the 6th postoperative day. A greater number of radiographs changed on the 6 th postoperative day was found (78%) compared to the 1st postoperative day (40%), occurring on intubation, decrease of respiratory complications and thus resulting in reduced length of hospital stay associated with the reduction in hospital costs [5,8,10,20,21].…”