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We hope this nomogram is useful to clinicians in the difficult process of making the decision to proceed with prophylactic aortic surgery based on aortic diameter in asymptomatic patients. The aortic size index (ASI) is defined as the AD divided by BSA. The average maximal ascending aortic size before an endpoint or operative repair was 5.00.9cm (range, 3.5-10.5cm). August 31, Guo DC, Pannu H, Tran-Fadulu V, et al. Natural history of isolated abdominal aortic dissection: A prospective cohort study. Eliathamby D, Keshishi M, Ouzounian M, Forbes TL, Tan K, Simmons CA, Chung J. JTCVS Open. However, we came to suspect that a patient's weight might not contribute substantially to aortic size and growth. Is the aortic size index relevant as a predictor of abdominal aortic In accordance with JTCVS preference, we provide a surgical video illustrating a prophylactic operation in a patient with an ascending aortic aneurysm involving the arch and great vessels. Blood flows out of the heart and into the aorta through the aortic valve. As aortic stenosis (AS) develops, minimal pressure gradient is present until the orifice area becomes less than half of normal. This avoids the need to calculate BSA from a computer site. Generally, an aneurysm expands over a period at the rate of 10% per annum. Consequently, we considered that indexing aortic size to height alone might be a more precise and simpler risk assessment tool. Thoracic aortic aneurysm clinically pertinent controversies and uncertainties. The primary aim of this study was to investigate if ASI is a predictor of development AAA, and to compare the predictive impact of ASI to that of the absolute AD. Doppler echocardiographic assessment of the St. Jude Medical prosthetic valve in the aortic position using the continuity equation. Epub 2019 Feb 13. Predicting the risk of an acute dissection in patients with an aortic aneurysmwhether in the root or in the ascending aorta, whether in patients with connective tissue disease or patients with bicuspid valvehas never been very accurate. . In international guidelines, preemptive surgical intervention criteria for thoracic ascending aortic aneurysm (TAAA) are based on absolute raw aortic diameter: 5.5cm for asymptomatic TAAA and between 4.0 and 5.0cm for various genetically effectuated aortopathies.