Whether the combination of low FEV1/VC ratio with normal FEV1 represents a physiological variant or a sign of early airflow obstruction is unknown. We studied 40 subjects presenting with low FEV1/VC but FEV1 within the range of normality predicted by ERS reference equations and 10 healthy controls. All subjects completed two questionnaires and underwent comprehensive pulmonary function testing ...

Introduction: Forced expiratory value in one score  (FEV1)/ Forced vital capacity (FVC) was used in classical literature for primary classifications of pulmonary disorders. American Thoracic Society/ European Respiratory Society guidelines recommended using FEV1/VC instead of FEV1/FVC.The aim of study was determination of the extent of superiority of FEV1/VC over the FEV1/FVC. Materials and Met...

background: the study was aimed to explore the association between arterial oxygen saturation (spo2) and spirometer parameters of disease severity in copd patients with a view to identify whether the pulse oximetry can be used as an alternative to arterial values in the clinical management of copd patients in a routine practice. materials and methods: thirty-one patients with copd were included...

OBJECTIVE To evaluate the use of the forced expiratory volume in one second/forced expiratory volume in six seconds (FEV1/FEV6) ratio as an alternative to the FEV1/forced vital capacity (FVC) ratio in the detection of mild airway obstruction. METHODS Reference equations for the Brazilian population in 2006 were used in order to determine the lower limits of normality for the FEV1/FEV6 and FEV...

Background: Some early staged NSCLC appears as non-subpleural peripheral pulmonary nodules. Thoracic surgeons usually adopt extended wedge resection or segmentectomy to remove these Video-assisted thoracoscopic surgery (VATS) has been carried out extensively worldwide in lung surgeries. The purpose of this study was evaluate changes postoperative function after undergoing VATS and anatomical ‏r...