AI Article Synopsis
- The study focused on comparing lung volume differences between the semi-prone (Sim's position) and side-lying positions.
- Measurements were taken using MRI while participants were in both positions, revealing that total lung capacity didn’t significantly differ between the two, except in specific instances with the left and right lungs.
- The results indicated that Sim's position enhanced lung expansion in the dorsal segment of the nondependent lung, especially in the right lung, while gravity impacted heart placement and lung space distribution.
Article Abstract
[Purpose] This study aimed to clarify the differences in regional lung volume between the semi-prone (Sim's position) and side-lying position, and the optimal position for increasing lung volume. [Methods] Measurements were performed in both positions on both sides. Sim's position was inclined 45° forward from the side-lying position. A 1.5-T system with a fast advanced spin-echo sequence in the coronal plane was used for magnetic resonance imaging. [Results] The two positions did not significantly differ in total lung capacity and its subdivisions on both sides, except the left lung in the right side-lying position and right Sim's position. In the nondependent lung, the percentage lung volume of the dorsal segment was significantly higher in the right Sim's position than in the right side-lying position. However, no significant difference was observed between the left side-lying and left Sim's position. [Conclusion] The heart was displaced ventrally by gravity in Sim's position and leaned on the ventral parapet. The spaces for the expansion of the ventral and dorsal segments of the lung were decreased and increased in Sim's position, respectively. With a nondependent left lung, the increase in the percentage lung volume of the dorsal segment was greater in Sim's position than in the side-lying position.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4842417 | PMC |
| http://dx.doi.org/10.1589/jpts.28.1020 | DOI Listing |
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