A 40 year old female presents with progressive dyspnea for one year. Physical examination reveals bibasilar end-inspiratory crepitations. All of the following statements about her condition are true, Except:
Residual volume is decreased in patients with Interstitial Lung Disease Progressive dyspnea and presence of bibasilar end-inspiratory crepitations suggests a diagnosis of interstitial lung disease Dyspnea is a common and prominent complaint in patients with Interwtitial Lung Disease(ILD)'-Harrison 17th/1645 `Most commonly, physical examination reveals tachypnea and bibasilar end - inspiratory dry crackles which are common in most forms of ILD' - Harrison 17th/1645 Interstitial Lung Disease (ILD) may be associated with connective tissue diseases 'ILDs have been difficult to classify because > 200 known individual disease are characterized by diffuse parenchymal lung involvement either as primary condition or as a significant pa of a multiorgan process, as may occur in connective tissue disorders (CTD's)'- Harrison 17th/1643 Interstial Lung disease produce a restrictive effect on Pulmonary Function Testing `Most forms of ILD produce a restrictive defect with reduced total lunz capacity (.TLC), functional residual capacity and residual volume (.IRV). Forced expiratory volume in one second (FEV1) and forced vital capacity (FVC) are reduced; but, the FEV1/FVC ratio is normal or increased' - Harrison 17th /1646 HRCT is a useful test for ILD HRCT is the investigation of choice for Interstitial Lung Disease.
May be associated with connective tissue disease
Residual volume is increased
Total Lung capacity is decreased
HRCT is a useful diagnostic test