Korean Circulation Journal

The Korean Society of Cardiology (대한심장학회)
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Aortic Aneurysm Screening in a High-Risk Population: A Non-Contrast Computed Tomography Study in Korean Males with Hypertension

  • Cho, In-Jeong (Division of Cardiology, Severance Cardiovascular Hospital) ;
  • Jang, Sung-Yeol (Division of Cardiology, Severance Cardiovascular Hospital) ;
  • Chang, Hyuk-Jae (Division of Cardiology, Severance Cardiovascular Hospital) ;
  • Shin, Sanghoon (Division of Cardiology, Severance Cardiovascular Hospital) ;
  • Shim, Chi Young (Division of Cardiology, Severance Cardiovascular Hospital) ;
  • Hong, Geu-Ru (Division of Cardiology, Severance Cardiovascular Hospital) ;
  • Chung, Namsik (Division of Cardiology, Severance Cardiovascular Hospital)
  • Received : 2014.02.21
  • Accepted : 2014.04.14
  • Published : 2014.03.30
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Abstract

Background and Objectives: Screening strategies for aortic aneurysm (AA) according to risk factors and ethnicity are controversial. This study explored the prevalence of AA and determined whether screening is necessary in a population of multiple risk factors. Subjects and Methods: From June, 2012 to April, 2013, 542 consecutive elderly (${\geq}65$ years) male hypertensive patients without a history of AA were prospectively enrolled. After excluding 15 patients (2.8%) with aortic valve surgery, 30 patients (5.5%) with suboptimal computed tomography (CT) images, the remaining 496 patients (age $73{\pm}5$ years) comprised the study population. Maximal diameters of the thoracic and abdominal aorta were measured using non-contrast CT. Results: The prevalence of thoracic AA (TAA, diameter ${\geq}40mm$) and abdominal AA (AAA, diameter ${\geq}30mm$) was 36.5% (181/496) and 6.0% (30/496), respectively. In the multivariate logistic regression analysis, determinants for TAA were age {odds ratio (OR) 1.059, 95% confidence interval (CI) 1.018-1.101, p=0.005}, dyslipidemia (OR 0.621, 95% CI 0.418-0.923, p=0.018), body surface area (OR 11.92, 95% CI 2.787-50.97, p=0.001), diastolic blood pressure (OR 1.029, 95% CI 1.009-1.049, p=0.004) and AAA (OR 3.070, 95% CI 1.398-6.754, p=0.005). In contrast, AAA was independently associated with dysplipidemia (OR 2.792, 95% CI 1.091-7.143, p=0.032), current/past smokerfs (OR 4.074, 95% CI 1.160-14.31, p=0.028), and TAA (OR 3.367, 95% CI 1.550-7.313, p=0.002). Conclusion: The prevalence of AA was significant and TAA was more prevalent than AAA in elderly Korean males with hypertension. Future research should establish distinct screening strategies for TAA and AAA according to risk factors and ethnicity.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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