RT Journal Article SR Electronic T1 Evaluating lung function in patients being considered for resectional surgery JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP P1267 VO 42 IS Suppl 57 A1 Stefan Wesolowski A1 Piotr Boros A1 Tadeusz Orlowski A1 Philip Quanjer YR 2013 UL http://erj.ersjournals.com/content/42/Suppl_57/P1267.abstract AB Objectives: Pulmonary function tests are important in assessing eligibility for lung resection surgery. The aim of the study was to assess the prevalence and type of pulmonary dysfunction in patients referred for lung resection. We also studied how the limit of normal (80%predicted versus lower limit of normal (LLN) as -1.645SD) affected the incidence of functional disorders. Methods and material: Retrospective analysis of lung function tests, spirometry, lung volumes, transfer factor for CO (TL,CO) in 493 consecutive patients referred for resectional surgery. Results: Spirometry was within the normal range in 255 (51.7%) patients. Airway obstruction was diagnosed in 210 (42.6%), and a restrictive pattern in 28 (5.7%) patients. FEV1 <LLN occurred in 154 (31%), and FEV1<80%pred. in 223 (45%) patients. In 275 (56.6%) cases TL,CO was <LLN, and in 350 (72%) patients <80%pred. In 151 (31%) cases with FEV1 within the normal range TL,CO was reduced. FEV1 or TL,CO was <LLN in 302 (62%) patients, and <80%pred. in 371 (76%) patients, (p<0.0001). Conclusions: Lung functional disorders are common in candidates for lung resection. Using the true LLN diminishes the incidence of disorders by 14% comparing to a lower limit at 80% of predicted; this reduces the number of additional diagnostic tests, the duration and the cost of hospitalization.