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Aortic isthmus

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https://www.readbyqxmd.com/read/29034019/hybrid-repair-of-an-abdominal-aortic-aneurysm-debranching-with-endovascular-aneurysm-repair-in-a-patient-with-horseshoe-kidney
#1
Keiwa Kin, Hiroshi Takano, Takaya Nakagawa, Yukitoshi Shirakawa
Abdominal aortic aneurysm (AAA) with associated horseshoe kidney (HSK) poses a technical challenge when performing conventional open surgical repair because of possible complications including renal infarction, neuralgia, and collecting system disruption. Endovascular aortic repair (EVAR) is considered the first-line treatment for this pathology, allowing for aneurysm repair without isthmus bisection. However, whether to sacrifice commonly presenting aberrant renal arteries during EVAR is a point of controversy...
March 24, 2017: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/29030063/immediate-and-midterm-results-of-balloon-angioplasty-for-recurrent-aortic-coarctation-in-children-aged-1-year
#2
Bruno Lefort, Matthias Lachaud, Jean Marc El Arid, Paul Neville, Nathalie Soulé, Patrice Guérin, Alain Chantepie
BACKGROUND: Several publications have considered results of percutaneous angioplasty for aortic recoarctation, but none focused on procedures performed in children aged<1 year. AIMS: To describe the immediate and midterm results of balloon angioplasty for recoarctation before the age of 1 year, and to define the factors that might influence outcome. METHODS: We retrospectively reviewed data from 20 consecutive children undergoing percutaneous dilatation for aortic recoarctation before the age of 1 year in the University Hospitals of Tours and Nantes...
October 10, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/28985746/porcine-model-of-progressive-cardiac-hypertrophy-and-fibrosis-with-secondary-postcapillary-pulmonary-hypertension
#3
Mariann Gyöngyösi, Noemi Pavo, Dominika Lukovic, Katrin Zlabinger, Andreas Spannbauer, Denise Traxler, Georg Goliasch, Ljubica Mandic, Jutta Bergler-Klein, Alfred Gugerell, Andras Jakab, Zsuzsanna Szankai, Levente Toth, Rita Garamvölgyi, Gerald Maurer, Frederic Jaisser, Faiez Zannad, Thomas Thum, Sándor Bátkai, Johannes Winkler
BACKGROUND: Meaningful translational large animal models for cardiac diseases are indispensable for studying disease mechanisms, development of novel therapeutic strategies, and evaluation of potential drugs. METHODS: For induction of heart failure, cardiac hypertrophy and fibrosis, a bare metal stent was implanted in the descending aorta of growing pigs (n = 7), inducing pressure stress on the left ventricle (group HYPI). The constant stent size in growing pigs resulted in antegrade partial obstruction of the aortic flow with a gradual increase in afterload...
October 6, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28955395/the-mid-term-results-of-thoracoscopic-closure-of-atrial-septal-defects
#4
Heemoon Lee, Ji-Hyuk Yang, Tae-Gook Jun, I-Seok Kang, June Huh, Seung Woo Park, Jinyoung Song, Chung Su Kim
BACKGROUND AND OBJECTIVES: Recently, minimally invasive surgical (MIS) techniques including robot-assisted operations have been widely applied in cardiac surgery. The thoracoscopic technique is a favorable MIS option for patients with atrial septal defects (ASDs). Accordingly, we report the mid-term results of thoracoscopic ASD closure without robotic assistance. SUBJECTS AND METHODS: We included 66 patients who underwent thoracoscopic ASD closure between June 2006 and July 2014...
September 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28918426/aortic-isthmus-flow-recording-predicts-the-outcome-of-the-recipient-twin-after-laser-coagulation-in-twin-twin-transfusion-syndrome
#5
France Leduc, Amélie Delabaere, Roxanne Gendron, Florent Fuchs, Sandrine Wavrant, Marie-Josée Raboisson, Jean-Claude Fouron, François Audibert
INTRODUCTION: The objective was to assess the prognostic value of the systolic flow through the aortic isthmus in monochorionic pregnancies complicated by twin-twin transfusion syndrome (TTTS) treated by placental laser ablation. MATERIAL AND METHODS: Fetal echocardiography and outcome data of 105 cases of TTTS treated by laser photocoagulation of placental anastomoses were reviewed. Hemodynamic parameters were collected before and after treatment. The isthmic systolic index (ISI) was calculated as the peak systolic velocity/systolic nadir ratio...
September 16, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28893706/hypertension-acute-stent-thrombosis-and-paraplegia-6-months-after-tevar-for-blunt-thoracic-aortic-injury-in-a-22-year-old-patient
#6
O Martinelli, F Faccenna, A Malaj, J Jabbour, S Venosi, R Gattuso, B Gossetti, L Irace
TEVAR is a less invasive option for managing traumatic injuries of the descending aorta in polytraumatized patients. Concerns arise when treating young patients with TEVAR. A 22-year old male was admitted to the Emergency Department following a high-impact road traffic collision. Whole body CT scan documented multiple injuries, including rupture of descending thoracic aorta just below the isthmus. There was no evidence of paraplegia or stroke. We decided to treat him in an endovascular fashion with a Zenith Cook (Cook Incorporated, Bloomington, IN) endograft...
September 9, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28833523/modeling-of-coarctation-of-aorta-in-human-fetuses-using-3d-4d-fetal-echocardiography-and-computational-fluid-dynamics
#7
Zhuo Chen, Yue Zhou, Jingying Wang, Xiaowei Liu, Shuping Ge, Yihua He
OBJECTIVES: We sought to develop a hemodynamic model of aortic and ductal arches using computational fluid dynamics (CFD) and 3D/4D spatio-temporal image correlation (STIC) fetal echocardiography and to investigate the hemodynamics of coarctation of aorta (CoA) in human fetuses using this approach. METHODS: We obtained 3D/4D STIC fetal echocardiographic images of the aortic and ductal arches (DA) in five normal fetuses. Based on these images, we simulated the hemodynamics in the two arches using CFD...
August 22, 2017: Echocardiography
https://www.readbyqxmd.com/read/28695721/aortic-isthmus-shunt-dynamics-in-normal-and-complicated-monochorionic-pregnancies
#8
Viola Seravalli, Dana Block-Abraham, Cyrethia McShane, Sarah Millard, Ahmet Baschat, Jena Miller
OBJECTIVE: To study fetal aortic isthmus (AoI) shunt dynamics in monochorionic (MC) twins. METHODS: Normal and complicated MC pregnancies were prospectively enrolled. The relationship of isthmus flow index (IFI) with Doppler parameters of umbilical artery (UA), descending aorta, middle cerebral artery, and ductus venosus and with left and right ventricular cardiac output and stroke volume was studied. RESULTS: The IFI was obtained in 180 examinations from 48 pregnancies (24 twin-twin transfusion syndrome, TTTS; 4 selective intrauterine growth restriction, sIUGR; 12 TTTS + sIUGR; and 8 uncomplicated)...
July 11, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28668226/sustained-chronic-maternal-hyperoxygenation-increases-myocardial-deformation-in-fetuses-with-a-small-aortic-isthmus-at-risk-for-coarctation
#9
Shi Zeng, Jiawei Zhou, Qinghai Peng, Wen Deng, Ming Zang, Tao Wang, Qichang Zhou
BACKGROUND: We aimed to assess differences in myocardial deformation in fetuses at risk for coarctation (CoA) and the effects of maternal hyperoxygenation on deformation. METHODS: Fetal echocardiography and velocity vector imaging were performed prospectively and serially in 48 fetuses with a small aortic isthmus and 48 gestation age-matched normal fetuses. Fetuses with a small aortic isthmus were randomly divided into two groups: one group with and the other group without maternal supplemental oxygen administration...
October 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28666489/atresia-of-the-descending-aorta-in-a-young-woman-requiring-bypass-graft
#10
Adcasdc Sadfasdf Dsc, Ammarah Mashhood, Taimur Asif Ali, Saulat Hasnain Fatimi
Congenital aortic atresia is a malformation accounting for 4 - 6% of all congenital heart diseases in children. Left ventricular outflow obstruction due to atresia is common at the aortic valve but rarely has atresia been identified in the descending aorta. We report the case of a 25-year woman who was evaluated for headache and uncontrolled hypertension. CTscan chest showed a short atretic segment in the descending aorta at the isthmus, distal to the takeoff of the subclavian artery. She underwent surgery; a 22 mm Dacron graft was taken and jump graft was placed between the arch of the aorta and the descending aorta, using partial occlusion clamps...
November 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28660196/endovascular-repair-of-traumatic-isthmic-ruptures-special-concerns
#11
REVIEW
Nikolaos Patelis, Athanasios Katsargyris, Chris Klonaris
Injury of the aortic isthmus is the second most frequent cause of death in cases of blunt traumatic injury. Conventional open repair is related to significant morbidity and mortality. Thoracic endovascular aortic repair (TEVAR) has increasing role in traumatic isthmic rupture, as it avoids the thoracotomy-related morbidity, aortic cross clamping, and cardiopulmonary bypass. Additionally to the technical difficulties of open repair, multi-trauma patients may not tolerate the manipulations necessary to undergo open surgery, due to concomitant injuries...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/28659571/chest-pain-and-sudden-onset-paraplegia-at-the-emergency-department-an-uncommon-presentation
#12
Feng Han Chiu, Shih Hung Tsai, Cheng Hsuan Ho
BACKGROUND Coarctation of the aorta is characterized by narrowing of the descending aorta. The narrowing typically is at the isthmus, the segment just distal to the left subclavian artery. Adults with undiagnosed aortic coarctation are asymptomatic or may present with nonspecific hypertension. We present a case that highlights the uncommon complication of aortic coarctation with spinal compression syndrome. CASE REPORT A 45-year-old male presented to the emergency department (ED) with acute-onset chest pain; he experienced urinary incontinence and bilateral lower limb weakness during his ED visit...
June 29, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28627028/common-findings-in-late-gestation-fetal-echocardiography
#13
Lauren Tague, Mary T Donofrio, Amanda Fulgium, Robert McCarter, Catherine Limperopoulos, David N Schidlow
OBJECTIVES: Fetal echocardiography provides detailed information about cardiac structure and function in utero. Limited information is available regarding normal findings late in pregnancy. We therefore sought to identify and describe common cardiac findings in late gestation. METHODS: Fetuses with structurally normal hearts were identified in mid gestation within a subset of pregnant women in a prospective study. The atrioventricular valves, right and left atria, aortic isthmus and ductus arteriosus dimensions and flow abnormalities, aneurysm of the septum primum, and presence and grade of tricuspid regurgitation were assessed throughout pregnancy...
June 19, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28623881/cardiac-tamponade-associated-with-delayed-ascending-aortic-perforation-after-blunt-chest-trauma-a-case-report
#14
Dae Woong Ryu, Mi Kyung Lee
BACKGROUND: Cardiac tamponade due to aortic injury after blunt trauma is a rare and potentially fatal injury. Most aortic injuries caused by blunt trauma present as aortic dissection or rupture of the aortic isthmus. Several cases of delayed aortic injury have been reported. However, all of these injuries were observed in the descending aorta because they had been caused by a posterior rib fracture. CASE PRESENTATION: We report the first case of cardiac tamponade associated with delayed ascending aortic perforation 2 weeks after blunt trauma...
June 17, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28587739/aortic-valve-pathology-as-a-predictive-factor-for-acute-aortic-dissection
#15
Denis Berdajs, Selim Mosbahi, Enrico Ferrari, Dominique Charbonnier, Ludwig K von Segesser
BACKGROUND: In this study, the effect of aortic valve (AV) pathology on local hemodynamic conditions was evaluated as a potential trigger for the onset of acute type A and B aortic dissection. METHODS: A time- and pressure-related four-dimensional (4-D) computed fluid dynamic model of the aorta was established. In an experimental setup, AV stenosis and AV insufficiency were created. 4-D pressure-related geometry of the aortic root (AR) with valve insufficiency and valve stenosis were determined by high-fidelity (200 Hz) microsonometric crystals...
October 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28294669/-visceral-complications-of-the-aortic-dissections-indications-and-technique-of-the-thoracoabdominal-refenestration
#16
Csaba Dzsinich, Jenő Szolnoky, Gábor Vallus, Gábor Darabos, Gabriella Nyiri, Dániel Teknős
Aortic dissection is a life threatening cardiovascular catastrophy. Its incidence estimated to 5-6 cases per 100,000 patients/year. The intimal tear happens at the ascending aorta in Type A, meanwhile at the aortic isthmus in Type B, but entry point may develop anywhere alongside the entire aorta. All types may affect a short aortic segment resulting in a localized false aneurysm, others separate the intimal layer at longer extension down to the visceral segment and far beyond to the femoral arteries. Dissection of orifices of side branches may lead to cerebral, upper extremity, spinal, visceral, renal and lower extremity malperfusion...
March 2017: Magyar Sebészet
https://www.readbyqxmd.com/read/28238239/ablation-of-macro-re-entrant-atrial-arrhythmia-late-after-surgical-aortic-valve-replacement
#17
Michał Orczykowski, Paweł Derejko, Piotr Urbanek, Robert Bodalski, Katarzyna Kodziszewska, Radosław Sierpiński, Rafał Baranowski, Maria Bilińska, Łukasz Szumowski
BACKGROUND: Re-entrant atrial arrhythmias are common in patients after cardiac surgery. To date, however, no studies have reported the safety and efficacy of radiofrequency (RF) ablation of macro-re-entrant atrial arrhythmias in a unique, homogeneous group of patients after surgical replacement of the aortic valve and single right atriotomy. METHODS: Among over 4,000 RF catheter ablations performed at the authors' center between 2008 and 2014, eight patients (seven males, one female; mean age 55...
September 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28174405/-thoracic-endovascular-aortic-repair-for-a-descending-thoracic-aneurysm-associated-with-pseudocoarctation-of-the-aorta-report-of-a-case
#18
Hiroaki Aida, Satoru Kagaya, Kazuo Abe
A 77-year-old man with a descending thoracic aneurysm associated with pseudocoarctation of the aorta underwent thoracic endovascular aortic repair (TEVAR). Computed tomography demonstrated kinking of the descending thoracic aorta. The aneurysm was located distal to a kinking and constricting aortic isthmus. TEVAR was performed because of the patient's comorbidity such as valvular heart diseases and postradiation status for the thoracic Hodgkin disease. TEVAR was successful but small aortic dissection was occurred distal to the stentgraft...
February 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28139441/normative-values-of-aortic-arch-structures-in-premature-infants
#19
Elles J Dijkema, Mirella C Molenschot, Johannes M P J Breur, Willem B de Vries, Martijn G Slieker
BACKGROUND: Aortic arch abnormalities represent 5% to 8% of all congenital heart disease. Measurements of the aortic arch dimensions on two-dimensional echocardiographic images remain of critical importance in the diagnosis of aortic arch pathology. To define aortic hypoplasia or coarctation, measured dimensions must be compared with normal values. Normal values have been described for children of all ages in earlier studies. However, normative data for premature infants are not yet available...
March 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28095343/patient-tailored-management-of-an-asymptomatic-massive-substernal-goiter-presenting-as-brachiocephalic-vein-occlusion-report-of-a-case-and-review-of-sternotomy-indications
#20
Georgios Sahsamanis, Eleftherios Chouliaras, Konstantinos Katis, Stavros Samaras, Stavros Daliakopoulos, Georgios Dimitrakopoulos
INTRODUCTION: Substernal goiters are characterized by the protrusion of at least 50% of the thyroid mass below the level of the thoracic inlet. Still their definition is controversial. CASE PRESENTATION: The case refers to a 44year old male who presented to our department due to swelling and a feeling of 'heaviness' of his left upper extremity for the past 6 months. CT scan revealed a massive substernal goiter extending to the great vessels. Intraoperatively, a median sternotomy was performed due to the size of the gland and the close adhesion of the isthmus and lower left thyroid lobe to the brachiocephalic vein...
2017: International Journal of Surgery Case Reports
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