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Centre for Policy on Ageing | |
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Effect of aging on cardiothoracic ratio in women
— a longitudinal study | | Author(s) | Kazuo Inoue, Kazuya Yoshii, Hideko Ito |
| Journal title | Gerontology, vol 45, no 1, January/February 1999 |
| Pages | pp 53-58 |
| Keywords | Cardiovascular systems ; Biological ageing ; Older women ; Longitudinal surveys ; Cross sectional surveys ; Japan. |
| Annotation | The cardiothoracic ratio (CTR) is defined as the ratio of the maximum transverse diameter of cardiac shadow to the transverse diameter of the thorax in X-ray film, and has been used as an index of cardiac enlargement. The effect of ageing on the components of the CTR in women's chest X-ray remains obscure. This study uses data for 110 women who attended an annual health screening and chest X-ray in a mountain village in Japan in 1981 and 1990. Data was used to determine thoracic diameter (TD), cardiac diameter (CD), and lung height (LH), and then calculated the CDR. When these were analysed on the basis of age in 1981, mean CD and CTR increased, and TD decreased in the advanced age group. The percentage of radiographic cardiomegaly - a risk factor of cardiovascular disease, heart failure and death - (CTR >50%) strikingly increased in the advanced age group. In 1981-90 longitudinal analysis, the mean CD increased, and mean TD decreased significantly. Changes in CTR in 9 years were positively correlated with those of CD, and negatively correlated with those of TD and LH. The longitudinal data generally accorded with the cross-sectional data, except LH. (RH). |
| Accession Number | CPA-990215003 A |
| Classmark | BKK: BH: BD: 3J: 3KB: 7DT |
Data © Centre for Policy on Ageing |
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| ...from the Ageinfo database published by Centre for Policy on Ageing. |
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