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Endovascular laser fenestration of a frozen elephant trunk stent graft for treatment of chronic cerebral malperfusion.
Vascular
January 2025
Division of Vascular Surgery, Medical University of South Carolina, Charleston, SC, USA.
Objectives: Mal-deployment of the thoracic endovascular aortic repair (TEVAR) stent graft during a frozen elephant trunk (FET) procedure for an acute type A aortic dissection (ATAAD) leads to devastating complications. We report a hemiarch replacement with TEVAR stent graft covering the aortic arch vessels salvaged through an endovascular approach.
Methods: A 69-year-old man with ATAAD in 2018, status post-hemiarch repair with TEVAR, presented in 2023 with progressive dizziness/syncope and lower extremity hypertension with inability to tolerate anti-hypertensives.
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Alzheimers Dement
December 2024
Columbia University Irving Medical Center, New York, NY, USA.
Background: Age-related changes in the systemic and cerebral vasculature adversely affect brain health and may contribute to neurodegeneration. However, the relationship between markers of systemic (arterial stiffness) and cerebral (flow pulsatility) vascular aging with neurodegeneration remains unclear. This study aimed to evaluate the associations of arterial stiffness and flow pulsatiility with blood biomarkers of neurodegeneration.
View Article and Find Full Text PDFEndovascular interventions in cancer patients with compromise of the mediastinal vasculature: a review.
Mediastinum
May 2024
Department of Interventional Radiology, Division of Diagnostic Imaging, University of Texas MD Anderson Cancer Center, Houston, TX, USA.
The mediastinal vasculature can be affected by various etiologies in cancer patients. Both direct and indirect sequela of cancer may result in life-threatening clinical presentations. Tumor growth may cause vessel narrowing and decreased blood flow from either extrinsic mass effect, invasion into the vascular wall, or tumor thrombus within the lumen.
View Article and Find Full Text PDFNeo-aorta reconstruction with retained stented patch in Norwood procedure after hybrid palliation of high-risk hypoplastic left heart syndrome: a case report.
Cardiol Young
January 2025
Department of Pediatrics, Seoul National University Children's Hospital, Seoul National University College of Medicine, Seoul, Korea.
Hybrid procedure of hypoplastic left heart syndrome, comprising ductus arteriosus stenting and bilateral pulmonary artery banding, is a good surgical option for initial palliative procedure for high-risk patients for Norwood procedure. However, ductal stenting may cause retrograde aortic blood flow obstruction. Furthermore, complete removal of stent while performing the Norwood procedure make the operation more difficult.
View Article and Find Full Text PDFObserver- and sequence variability in personalized 4D flow MRI-based cardiovascular models.
Sci Rep
January 2025
Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.
Subject-specific parameters in lumped hemodynamic models of the cardiovascular system can be estimated using data from experimental measurements, but the parameter estimation may be hampered by the variability in the input data. In this study, we investigate the influence of inter-sequence, intra-observer, and inter-observer variability in input parameters on estimation of subject-specific model parameters using a previously developed approach for model-based analysis of data from 4D Flow MRI acquisitions and cuff pressure measurements. The investigated parameters describe left ventricular time-varying elastance and aortic compliance.
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