No individual exhibited evidence of an obstructive defect. Comparison with local reference ranges, represented as percentage of predicted value, revealed similar impairments (Fig. 2): FEV1 86.9 (95% CI 81.1 to 92.7), FVC 89.0 (95% CI 83.5 to 94.4), FEV1/FVC ratio 97.7 (95% CI 95.4 to ...
Infection would be considered in the differential though the pattern on spirometry can vary so it will not be discussed here– for example if the infection is chronic bronchitis it can have an obstructive pattern, if it is more distal it can have a restrictive pattern or mixed features. So ...
Whilst BOS is defined as an obst ructive ventilatory defect we sought to identify and characterize a cohort of lung transplant recipients whose loss of allograft function manifested as a restrictive defect on pulmonary function testing. Methods and Materials We retrospectively evaluated 193 lung ...
The reduction in lung volumes, especially ERV correlated with BMI CONCLUSIONS: Obesity produces a characteristic pattern of Restrictive ventilatory defect dependent on BMI. Static lung volumes help explain obesity as the cause of clinically unexplained dyspnea in many. spirometry is helpful in excluding...
Background To investigate the severity of hypoxemia and prevalence of pulmonary hypertension (PHTN) in patients with the overlap syndrome (OS) of restrictive ventilatory defect (RVD) and sleep apnea (SA).Methods Patients referred for both sleep test and spirometry for suspected SA and ventilatory ...
PLETHYSMOGRAPHIC FINDINGS IN PATIENTS WITH BRONCHODILATOR RESPONSIVE RESTRICTIVE DEFECTbronchodilatorImprovement in spirometry after bronchodilator administration (BD) is characteristic of obstructive airway diseases, such as asthma. However, one occasionally encounters a restrictive pattern on testing that improves...