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Aorta

A Comparison of Two Strategies for Aortic Valve-sparing Root Replacement

Colleagues from Italy and Germany compared the short- and mid-term outcomes of the straight tube graft (David-I) and the Valsalva graft in 232 patients undergoing an isolated David procedure. The two groups did not differ significantly in 30-day mortality (1% vs 2%), late survival (p = 0.799), or valve-related reoperation (p = 0.241). Although with more cusp repairs (22% vs 4%), patients with Valsalva graft showed a higher incidence of aortic insufficiency ≥ II° after surgery (17% vs 0%) and at follow-up (39% vs 22%).

Aortic Endovascular Stenting in Patients With Systemic Connective Tissue Disorders: Does the Prohibitive Dogma Still Stand Tall?

In this brief review, the authors elaborate on status quo of the use of endovascular stent grafts in the management of patients with connective tissue disorders. Because the radial force and circumferential stress on the native aorta remains a signficant issue that leads to stent graft failure, open surgical repair remains the gold standard in most of such patients.

Preoperative Dual Antiplatelet Therapy Increases Bleeding and Transfusions but Not Mortality in Acute Aortic Dissection Type A Repair

Hansson and colleagues analyzed the effect of preoperative dual antiplatelet therapy on outcomes for patients undergoing surgery for acute aortic dissection type A. Among 1,141 patients with acute type A dissection, 108 had aspirin and clopidogrel, and 11 had aspirin and ticagrelor. Dual antiplatelet therapy led to more bleeding and more transfusions but not to more deaths. However, major bleeding was associated with higher mortality.

Multimodal Imaging of Aortic Annulus and Root Geometry After Valve Sparing Root Reconstruction

This article addresses the controversy surrounding the optimal annular stabilization technique following valve sparing root reconstruction (VSRR) and the lack of comprehensive imaging data in the evaluation of the natural history of aortic root graft geometry, valve competency, and prognosis postreconstruction. Seventy consecutive patients were prospectively enrolled between 2008 and 2017 (mean age 56.4 ± 16.4 years, 19.7% women) for VSRR. Dacron aortic annuloplasty reconstruction was found to be stable over time, without the need for external or internal stabilization.

Optimal Occlusion Pattern for Minimally Invasive Staged Segmental Artery Coil Embolization in a Chronic Porcine Model

In this experimental study on segmental artery coil embolization, the authors examined the optimal occlusion pattern to reduce the risk of spinal cord ischemia during thoracoabdominal aortic repair. Von Aspern and colleagues found that staged regional occlusion, with coiling of lumbar arteries first, leads to better perfusion recovery, no neurological deficits, and no cord tissue damage.

Growth of the Thoracic Aorta in the Smoking Population: The Danish Lung Cancer Screening Trial

Investigators reported the distribution of thoracic aortic growth in smokers based on longitudinal data of current and ex-smokers aged 50-70 years from the Danish Lung Cancer Screening Trial. Mean and 95th percentile of annual aortic growth of the ascending aortic and descending aortic diameters were calculated with the first and last noncontrast computed tomography scans during follow-up.

Cardiac Remodelling Following Thoracic Endovascular Aortic Repair for Descending Aortic Aneurysms

Thoracic stentgrafts are stiffer than the aorta. To understand how this mismatch might affect the left ventricle, van Bakel and colleagues quantified the left ventricular remodeling after thoracic endovascular aortic repair (TEVAR) in 8 patients. They estimated an increase in left ventricular stroke work and found an increase in left ventricular mass after TEVAR. The authors conclude that compliant endografts should be developed to prevent adverse left ventricular remodeling after TEVAR.

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