Key result
Pre-operative chest films taken in supine positions at varying lung volumes showed significant differences in transverse cardiac diameter, cardio thoracic ratio, and mediastinal width.
Why the study?
Do different projections, postures, and lung inflations affect radiographic measurements in pre-operative chest films of cardiac surgery patients?
Population
Patients undergoing cardiac surgery
Comparison
Pre-operative chest films taken in both upright… vs Conventional departmental chest film
Design
Cross-sectional
Authors
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Radiographic cardiac measurements vary with supine position and lung volume; leaves open whether standardized protocols improve post-operative comparisons in cardiac surgery.
Observational
Do different projections, postures, and lung inflations affect radiographic measurements in pre-operative chest films of cardiac surgery patients?
Pre-operative chest films should be taken at lung volumes and postures comparable to post-operative states to allow for accurate comparison in cardiac surgery patients.
R. Scott Harris (1980) conducted an observational in Patients undergoing cardiac surgery. Pre-operative chest films in supine positions at varying lung volumes vs. Conventional upright pre-operative chest films was evaluated on Differences in transverse cardiac diameter, cardio thoracic ratio, mediastinal width and vertical lung height. Pre-operative chest films taken in supine positions at varying lung volumes showed significant differences in transverse cardiac diameter, cardio thoracic ratio, and mediastinal width.