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https://www.readbyqxmd.com/read/29786413/frozen-elephant-trunk-and-arch-endografts-for-chronic-thoracoabdominal-aortic-dissections
#1
Giovanni Tinelli, Marco Ferraresi, A Claire Watkins, Raphael Soler, Elie Fadel, Dominique Fabre, Stéphan Haulon
Chronic aortic dissecting aneurysms (TAAD) presenting after acute Stanford Type A or B dissection includes both arch and/or thoracoabdominal aortic aneurysms (TAAA). Approximately 60% of patients who survive surgical treatment of acute Type A aortic dissections will require another aortic procedure. Similarly, more than 70% of patients with chronic Type B aortic dissections will experience false lumen dilation at 5-year follow-up, often requiring intervention. Open or hybrid aortic repairs of complex TAAD involving the arch and the TAAA are very demanding procedures for both patients and clinicians...
May 22, 2018: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29786410/percutaneous-deep-venous-arterialization-in-patients-with-critical-limb-ischemia-a-technical-note
#2
Steven Kum, Eline Huizing, Michiel A Schreve, Çagdas Ünlü, Roberto Ferraresi, Lasitha B Samarakoon, Daniel A van den Heuvel
Critical limb ischemia (CLI) is the presentation of end stage peripheral arterial disease and typically presents with rest pain, ulceration and gangrene. The outcome of conservative treatment is poor and often leads to amputations. Arterial revascularization plays an important role in amputation prevention. Unfortunately, a significant percentage of CLI patients cannot be revascularized and subsequently end up with a palliative amputation. This has led to the need and exploration of new treatment options in this no option subgroup of CLI...
May 22, 2018: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29785676/asymmetry-of-the-greater-cornua-of-the-hyoid-bone-and-the-superior-thyroid-cornua-a-case-report
#3
Miroslav Radunovic, Batric Vukcevic, Nemanja Radojevic
The hyoid bone consists of a body and two pairs of processes: the greater cornua (GC) and the lesser cornua. The GC is connected to the superior thyroid cornu (STC) by the lateral thyrohyoid ligament. The GC and the STC share a common embryological origin from the third pharyngeal arch. During anatomical dissection of a male cadaver of 56 years of age, a combined variation of the GC and the STC was found. The left GC was 27.7 mm long, and the right GC was 30 mm long. The left GC axis was in the same plane as the hyoid body, while an angle of 33° was between the right GC axis and the hyoid body plane...
May 21, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29784764/links-between-immunologic-memory-and-metabolic-cycling
#4
REVIEW
Matthew A Cottam, Hana A Itani, Arch A Beasley, Alyssa H Hasty
Treatments for metabolic diseases, such as diet and therapeutics, often provide short-term therapy for metabolic stressors, but relapse is common. Repeated bouts of exposure to, and relief from, metabolic stimuli results in a phenomenon we call "metabolic cycling." Recent human and rodent data suggest metabolic cycling promotes an exaggerated response and ultimately worsened metabolic health. This is particularly evident with cycling of body weight and hypertension. The innate and adaptive immune systems have a profound impact on development of metabolic disease, and current data suggest that immunologic memory may partially explain this association, especially in the context of metabolic cycling...
June 1, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29784673/formation-of-the-sacrum-requires-down-regulation-of-sonic-hedgehog-signaling-in-the-sacral-intervertebral-discs
#5
Raffaella Bonavita, Kathleen Vincent, Robert Pinelli, Chitra Lekha Dahia
In humans, the sacrum forms an important component of the pelvic arch, and it transfers the weight of the body to the lower limbs. The sacrum is formed by collapse of the intervertebral discs (IVDs) between the five sacral vertebrae during childhood, and their fusion to form a single bone. We show that collapse of the sacral discs in the mouse is associated with the down-regulation of sonic hedgehog (SHH) signaling in the nucleus pulposus (NP) of the disc, and many aspects of this phenotype can be reversed by experimental postnatal activation of HH signaling...
May 21, 2018: Biology Open
https://www.readbyqxmd.com/read/29782305/tatami-mats-a-source-of-pitted-keratolysis-in-a-martial-arts-athlete
#6
Anamaria Balić, Zrinka Bukvić Mokos, Branka Marinović, Daniela Ledić Drvar
Dear Editor, Pitted keratolysis (PK), also known as keratosis plantaris sulcatum, is a non-inflammatory, bacterial, superficial cutaneous infection, characterized by many discrete superficial crateriform ''pits'' and erosions in the thickly keratinized skin of the weight-bearing regions of the soles of the feet (1). The disease often goes unnoticed by the patient, but when it is noticed it is because of the unbearable malodor and hyperhidrosis of the feet, which are socially unacceptable and cause great anxiety to many of the patients...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29781015/attenuation-of-pressure-dips-underneath-piles-of-spherocylinders
#7
Haiyang Zhao, Xizhong An, Dazhao Gou, Bo Zhao, Runyu Yang
The discrete element method (DEM) was used to simulate the piling of rod-like (elongated sphero-cylindrical) particles, mainly focusing on the effect of particle shape on the structural and force properties of the piles. In this work, rod-like particles of different aspect ratios were discharged on a flat surface to form wedge-shaped piles. The surface properties of the piles were characterized in terms of angle of repose and stress at the bottom of the piles. The results showed that the rise of the angle of repose became slower with the increase of particle aspect ratio...
May 21, 2018: Soft Matter
https://www.readbyqxmd.com/read/29780895/salvage-procedure-using-a-chimney-endograft-for-early-cerebral-ischaemia-after-hybrid-aortic-arch-repair-of-a-primary-aorto-bronchial-fistula
#8
M Cappelle, V Coppin, H Thieren, G Maleux, I Fourneau
Introduction: Hybrid aortic arch repair for the treatment of aorto-bronchial fistulas has been suggested as a safe alternative to open repair. However, surgical morbidity and mortality are still significant and re-intervention is sometimes inevitable. Report: Successful rescue by a hybrid approach is reported in a 76 year old woman who was transferred from another centre with recurrent episodes of left hemiplegia shortly after debranching of the supra-aortic vessels and thoracic aortic stent grafting for an aorto-bronchial fistula associated with a true aneurysm at the level of origin of the left subclavian artery...
2018: EJVES Short Reports
https://www.readbyqxmd.com/read/29780729/the-proximalization-of-the-arch-anastomosis
#9
Tohru Asai, Tomoaki Suzuki, Takeshi Kinoshita
No abstract text is available yet for this article.
2018: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29780728/intimal-re-layering-technique-for-type-a-acute-aortic-dissection-reconstructing-the-intimal-layer-continuity-to-induce-remodeling-of-the-false-channel
#10
Eugenio Neri, Enrico Tucci, Giulio Tommasino, Giulia Guaccio, Carmelo Ricci, Pierleone Lucatelli, Marco Cini, Roberto Ceresa, Antonio Benvenuti, Luigi Muzzi
Background: Residual false channel is common after repair of type A acute aortic dissection (TAAAD). Starting from our recent series of TAAAD patients we carried out a retrospective analysis, regarding the failure of primary exclusion at the time of the initial operation. We classified the location of the principal entry tears perfusing the residual false channel. The proposed technique represents our attempt to correct the mechanism of false channel perfusion during primary repair. We describe a new technique designed to address some limitations of standard hemiarch aortic replacement...
2018: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29780725/total-aortic-repair-for-acute-type-a-aortic-dissection-a-new-paradigm
#11
George Matalanis, Shoane Ip
The currently accepted guidelines of open surgical repair for acute type A aortic dissection (ATAAD) include the resection of the primary entry tear, replacement of the ascending aorta and "hemi-arch" with an open distal anastomosis, and aortic valve resuspension and some form of obliteration of the aortic root false lumen. The principal aim being protection against aortic rupture, aortic regurgitation, and coronary ischemia and restoration of antegrade preferential true lumen perfusion. Proponents argue that this operation is tailored to be in the armamentarium of most cardiac surgeons and deliver the lowest early operative risk, while leaving the infrequent long-term sequelae to be dealt with electively by experienced aortic centres...
2018: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29780723/cerebral-perfusion-issues-in-type-a-aortic-dissection
#12
REVIEW
Davide Pacini, Giacomo Murana, Luca Di Marco, Marianna Berardi, Carlo Mariani, Giuditta Coppola, Mariafrancesca Fiorentino, Alessandro Leone, Roberto Di Bartolomeo
Stroke events are very common in acute type A aortic dissection. Cerebral malperfusion could manifest at presentation due to prolonged arch vessels hypoperfusion or develop after surgery for inadequate cerebral protection during arch repair. To reduce this detrimental complication there are several adjuncts that can be adopted for cerebral protection such as direct antegrade or retrograde cerebral perfusion (RCP) and use period of deep to moderate hypothermic circulatory arrest time; however, they are often insufficient as preoperative malperfusion already caused irreversible ischemic damages...
2018: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29780588/takeoff-orientation-of-the-major-aortic-arch-branches-irrespective-of-arch-type-ramifications-for-brachiocephalic-interventions-including-carotid-stenting
#13
Rajiv Tayal, M Zain Khakwani, Benjamin Lesar, Michael Sinclair, Afroditi Emporelli, Vadim Spektor, Marc Cohen, Najam Wasty
Background: Our previous work demonstrating great ease and predictability of cannulation of the major aortic arch branches with an upwardly pointing 3DR catheter, irrespective of aortic arch type, led us to hypothesize that centering or "cresting" of these vessels must occur along the superior most aspect of the aortic arch in a curvilinear fashion. Methods: We retrospectively analyzed 111 computed tomographic scans of the chest and thoracic aorta with intravenous contrast performed at our hospital between April 2011 and May 2012 utilizing TeraRecon image reconstruction software...
2018: SAGE Open Medicine
https://www.readbyqxmd.com/read/29780069/successful-rescue-of-a-ruptured-tracheoinnominate-fistula-with-extracorporeal-membrane-oxygenation-endovascular-stents-and-debranching-surgical-bypass
#14
Yu-San Chien, Yen-Chun Chao, Kuo-Sheng Lee, Kung-Hong Hsu
We reported a case of ruptured tracheoinnominate fistula in a 14-year-old boy with history of repeated sternotomy. Tracheostomy was performed at age 2 years. Slide tracheoplasty was done at age 13 years. He presented to outpatient clinic with episodic hemosputum. Massive blood emanated from stoma during bronchoscopy evaluation. Venous-arterial extracorporeal membrane oxygenation was installed for resuscitation. A contrast-enhanced computed tomography (CT) and angiography confirmed the diagnosis. Immediate control of bleeding was achieved by an endovascular stent graft deployed at innominate artery...
May 18, 2018: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29779637/product-review-on-intimal-re-layering-technique-for-arch-repair
#15
EDITORIAL
Joon Bum Kim
No abstract text is available yet for this article.
April 16, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29779276/-fabrication-and-accuracy-research-on-3d-printing-dental-model-based-on-cone-beam-computed-tomography-digital-modeling
#16
Hui-Rong Zhang, Le-Feng Yin, Yan-Li Liu, Li-Yi Yan, Ning Wang, Gang Liu, Xiao-Li An, Bin Liu
OBJECTIVE: The aim of this study is to build a digital dental model with cone beam computed tomography (CBCT), to fabricate a virtual model via 3D printing, and to determine the accuracy of 3D printing dental model by comparing the result with a traditional dental cast. METHODS: CBCT of orthodontic patients was obtained to build a digital dental model by using Mimics 10.01 and Geomagic studio software. The 3D virtual models were fabricated via fused deposition modeling technique (FDM)...
April 1, 2018: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29778817/extent-of-aortic-replacement-in-type-a-dissection-current-answers-for-an-endless-debate
#17
REVIEW
Stephen D Waterford, Rita L Gardner, Marc R Moon
BACKGROUND: The proximal and distal extent of surgery for type A dissection is the subject of this review article. METHODS: In this report, we summarize select series that illumine the issue at hand and provide insight into the surgical approach at our institution to DeBakey type I aortic dissections. RESULTS: For proximal extent, we discuss preservation of the aortic valve in the presence of aortic insufficiency, as well as management of the aortic root in the setting of root dilation...
May 17, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29778614/thoracic-stent-grafting-through-transapical-approach-for-type-iii-endoleak-due-to-prosthetic-disconnection
#18
Isaac Martínez López, Manuela M Hernández Mateo, Luis C Maroto Castellanos, Javier Cobiella Carnicer, Isidre Vilacosta, Francisco J Serrano Hernando
TEVAR is a well-stablished treatment of descending thoracic aneurysms and increasingly complex endovascular procedures are being performed including aortic arch and ascending aorta. However, follow-up complications may be expected, which will enhance the need of alternative approaches such as transapical, in case of complex anatomies and reinterventions. We report the case of a man with prior history of ischemic cardiopathy and multiple endovascular aortic interventions with proximal landing in zone 1 and distal landing proximal to celiac trunk...
May 17, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29777669/repair-of-thoracic-and-thoracoabdominal-mycotic-aneurysms-and-infected-aortic-grafts-using-allograft
#19
Joel S Corvera, David Blitzer, Hannah Copeland, Daniel Murphy, Philip J Hess, Saila T Pillai, John W Fehrenbacher
BACKGROUND: Mycotic aneurysm of the thoracic or thoracoabdominal aorta and infection of thoracic or thoracoabdominal aortic grafts are challenging problems with high mortality. In-situ reconstruction with cryopreserved allograft(CPA) avoids placement of prosthetic material in an infected field and avoids suppressive antibiotics or autologous tissue coverage. METHODS: Fifty consecutive patients with infection of a thoracic or thoracoabdominal aortic graft or mycotic aneurysm underwent resection and replacement with CPA from 2006 to 2016...
May 16, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29777011/fox-proteins-are-modular-competency-factors-for-facial-cartilage-and-tooth-specification
#20
Pengfei Xu, Bartosz Balczerski, Amanda Ciozda, Kristin Louie, Veronika Oralova, Ann Huysseune, J Gage Crump
Facial form depends on the precise positioning of cartilage, bone, and tooth fields in the embryonic pharyngeal arches. How complex signaling information is integrated to specify these cell types remains a mystery. We find that modular expression of Forkhead-domain transcription factors (Fox) in the zebrafish face arises through integration of Hh, Fgf, Bmp, Edn1, and Jagged-Notch pathways. Whereas loss of C-class Fox proteins results in reduced upper facial cartilages, loss of F-class Fox proteins results in distal jaw truncations and absent midline cartilages and teeth...
May 18, 2018: Development
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