Abstract
Chronic, diffuse, interstitial pulmonary diseases may cause an increase in mean pulmonary arterial pressure (PAP) and a decrease in pulmonary blood volume (PBV). We compared 12 cardiovascular and three parenchymal assessments on plain chest radiographs with values of PAP and PBV obtained during cardiac catheterization in 29 patients with such diseases (progressive systemic sclerosis 20, sarcoidosis six, miscellaneous three) and normal pulmonary venous pressures. PAP ranged from 10 to 40 torr (mean 19, SD +/- 7), PBV from 6.4 to 10.8% of total blood volume (mean 8.4, SD +/- 1.2). PBV was significantly related to eight radiologic variables. PAP was significantly related to the severity of parenchymal disease and size of the central pulmonary arteries, both of which were assessed radiologically. Diversion of blood flow to upper zones was significantly related to restriction of the pulmonary vascular bed, but was not necessarily a sign of increased PAP. In general, pulmonary hemodynamic abnormalities appeared proportional to the radiologic severity of parenchymal disease.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
