ArticleAnnals of medicine and surgery (2012)2025
Evaluation of Abdominal Aortic diameter at different vertebral levels using Abdominal Computed Tomography Angiography in Nepalese adults: A retrospective cross-sectional study.
Article in Annals of medicine and surgery (2012), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Accurate diagnosis and management of abdominal aortic aneurysms (AAAs) require knowledge of the normal range of abdominal aortic diameter. Previous studies have shown geographical variations in aortic diameters, with smaller measurements in Asian populations and larger measurements in Oceania. However, specific reference values for the Nepalese population are lacking. Establishing these reference ranges is crucial for diagnosing aortic diseases and selecting appropriate graft sizes in vascular procedures. Methods: This retrospective study includes patients over 18 years of age who underwent contrast-enhanced computed tomography of the abdomen and pelvis between September 2023 and December 2023. A total of 225 patients (124 males, 101 females; mean age: 50.95 ± 17.62 years) were included. A radiotechnician reviewed the examinations under the guidance of two radiologists and one senior radiotechnician. The diameter of abdominal aorta (AA) at the 12th thoracic (T12) vertebral level and the 3rd lumbar (L3) vertebrae was measured for each examination, which was analyzed and correlated with different study variables such as age, gender, alcohol consumption, and diabetic status. Result: The study included 225 patients (124 males, 101 females; mean age, 50.95 ± 17.62 years (range 18-88 years). The mean diameter of the suprarenal AA measured at the T12 vertebral level was 2.06 cm (±0.28) in men and 1.93 cm (±0.26) in women. The mean diameter of the infrarenal aorta measured at the L3 vertebral level was 1.54 cm (±0.21) in men and 1.41 cm (±0.20) in women. The age and gender of participants were found to have a statistically significant association with the diameter of the suprarenal AA. Additionally, age, gender, alcohol consumption, and diabetic status of participants were found to be statistically significantly associated with diameter of the infrarenal AA. Conclusion: We established reference values for AA diameters in the Nepalese population. The mean aortic diameter of the Nepalese population seems to be smaller than the Western population but comparable to the South Asian population.
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