Reported in this paper is a cutting-edge computational investigation into the influence of geometric characteristics on abdominal aortic aneurysm (AAA) rupture risk, beyond the traditional measure of maximum aneurysm diameter. A Comprehensive fluid-structure interaction (FSI) analysis was employed to assess risk factors in a range of patient scenarios, with the use of three-dimensional (3D) AAA models reconstructed from patient-specific aortic data and finite element method. Wall shear stress (WSS), and its derivatives such as time-averaged WSS (TAWSS), oscillatory shear index (OSI), relative residence time (RRT) and transverse WSS (transWSS) offer insights into the force dynamics acting on the AAA wall. Emphasis is placed on these WSS-based metrics and seven key geometric indices. By correlating these geometric discrepancies with biomechanical phenomena, this study highlights the novel and profound impact of geometry on risk prediction. This study demonstrates the necessity of a multidimensional assessment approach, future efforts should complement these findings with experimental validations for an applicable approach for clinical use.
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http://dx.doi.org/10.1002/cnm.3884 | DOI Listing |
Ultrasonography
December 2024
Professor Emeritus, Department of Radiology, Seoul National University Hospital, Seoul, Korea.
Nutcracker syndrome is caused by the compression of the left renal vein between the abdominal aorta and the superior mesenteric artery. The use of Doppler ultrasonography to diagnose this condition is challenging due to the dynamic nature of the nutcracker phenomenon and the variability of its symptoms, which can fluctuate with changes in patient posture and respiration. This review emphasizes the critical role of Doppler ultrasonography in identifying and managing nutcracker syndrome.
View Article and Find Full Text PDFJ Ultrasound
December 2024
Geriatrics Unit, Garibaldi-Nesima Hospital, Catania, Italy.
Early detection of abdominal aortic aneurysm (AAA) is crucial as untreated lesions can be life-threatening. We describe the case of a fortuitous ultrasound (US) detection of AAA by a trainee which allowed two subsequent "domino" diagnoses. A 69 y.
View Article and Find Full Text PDFInt J Clin Oncol
December 2024
Department of Obstetrics & Gynecology, Faculty of Medicine, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8520, Japan.
Background: The standard for robotic para-aortic lymphadenectomy has not been fully established. Para-aortic lymphadenectomy performed by sharing the same ports with pelvic procedures, a procedure known as dual-docking surgery, can be performed using the latest robotic system. We prospectively examined the ability of standardized dual-docking robotic surgery in endometrial cancer patients.
View Article and Find Full Text PDFJ Cardiothorac Surg
December 2024
Department of Cardiology, Barzilai Medical Center, The Ben-Gurion University of the Negev, Hahistadrout 2, 7830604, Ashkelon, Israel.
Background: Giant coronary artery aneurysms are rare conditions with potentially devastating consequences. We report a case of the largest documented giant right coronary artery (RCA) aneurysm to date.
Case Presentation: A 57-year-old male patient visited our outpatient clinic for abdominal pain and exertional dyspnea.
Eur J Pharmacol
December 2024
Department of Pharmacology, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410078, Hunan, China; Hunan Provincial Key Laboratory of Cardiovascular Research, Central South University, Changsha 410078, Hunan, China. Electronic address:
Aortic aneurysm and dissection pose fatal threats but no effective drug therapies are available. Previous work has been directed to reduce risk factors or target key pathological events, but none of the translational efforts succeeds. Here, we attempt to repurpose dimethyl fumarate (DMF), an FDA-approved immunomodulatory drug for multiple sclerosis, for the treatment of aortic aneurysm and dissection.
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