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Longitudinal changes of thoracic aortic diameters in the general population aged 55 years or older
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    Re: Longitudinal changes of thoracic aortic diameters in the general population aged 55 years or older

    Thijssen et al. reported factors affecting the diameters of the thoracic aorta in participants (1). By using non-enhanced cardiac CT, the diameters of the ascending (AA) and descending aorta (DA) were measured. The median absolute change in diameters during follow-up with mean scan interval of 14.1 years, was 1 mm for both the AA and DA. Absolute changes per decade in AA and AD diameters were significantly larger in males than in females. Significant determinants of changes in AA diameter were age, body mass index (BMI) and diastolic blood pressure (DBP) in female, and BMI in males. In addition, significant determinants of changes in DA diameter were age, BMI, DBP, and current smoking in female, and age and BMI in males. I have a comment about the study.

    There are some sex differences in significant determinants for the change of AA and AD diameters, and BMI is a common risk factor. Ferrara et al. reported that there were no effects of gender, BMI, AA diameter, aortic stiffness index, smoking habits, diabetes mellitus, and Marfan syndrome on AA tissue in patients with AA aneurysms. In contrast, aging and hypertension made the AA tissue weaker (2). The significant determinants for dilation of AA and DA diameters may not directly relate to the risk of thoracic aneurysm, and BMI management is important to prevent thoracic aorta dilations in general population.

    1. Thijssen CGE, Mutluer FO, van der Toorn JE, et al. Longitudinal changes of thoracic...

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    Conflict of Interest:
    None declared.