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KMID : 0385920140250040440
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Journal of the Korean Society of Emergency Medicine
2014 Volume.25 No. 4 p.440 ~ p.446
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The Study of the Changes of Chest Wall Shape and Chest Compression Site According to Increasing Age
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Bae Jun-Ho
Cho Jun-Hwi
Shin Myoung-Cheol
Choi Hyun-Young
Park Chan-Woo
Lee Hui-Young
Won Moo-Ho
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Abstract
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Purpose: The objective of this study is to investigate changes of chest wall shape and chest compression site according to increasing age.
Methods: This study is based on 99 patients who underwent chest computed tomography (CT) scans, and classified them into six groups according to age, from 30’s to 80’s. Using images of sagittal and coronal sections of chest CT scans, we found the chest compression site, which is in the lower half point of the sternal body. We calculated the vertical length to the left ventricular outflow tract and to the center of the left ventricle from the lower half point of the sternal body. We also estimated the antero-posterior (AP) diameters of the lower half region of the chest to determine how the shape of the chest changes according to increasing age. In addition, we calculated the horizontal length between the surface of the chest and center of the left ventricle. Data are classified and estimated according to age group.
Results: The AP diameter at the compression site was not significantly changed according to increasing age. The vertical length from the compression site to the center of the left ventricle and left ventricular outflow tract was significantly changed according to increasing age. The depth between surface of body and center of left ventricle was not significantly changed according to increasing age.
Conclusion: There is a tendency where the position of the left ventricular outflow tract and center of the left ventricle show lower positioning according to increasing age. AP diameter at the compression point was not significantly changed according to increasing age.
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KEYWORD
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Age, Antero-posterior diameter, Chest compression, Computed tomography, Left ventricular outflow
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