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https://www.readbyqxmd.com/read/28444501/validation-of-numerical-simulation-methods-in-aortic-arch-using-4d-flow-mri
#1
Shohei Miyazaki, Keiichi Itatani, Toyoki Furusawa, Teruyasu Nishino, Masataka Sugiyama, Yasuo Takehara, Satoshi Yasukochi
Computational fluid dynamics (CFD) are the gold standard in studying blood flow dynamics. However, CFD results are dependent on the boundary conditions and the computation model. The purpose of this study was to validate CFD methods using comparison with actual measurements of the blood flow vector obtained with four-dimensional (4D) flow magnetic resonance imaging (MRI). 4D Flow MRI was performed on a healthy adult and a child with double-aortic arch. The aortic lumen was segmented to visualize the blood flow...
April 25, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28394009/anatomical-variations-of-testicular-artery-a-review
#2
Ilangovan Kayalvizhi, Ravi Kant Narayan, Piyush Kumar
The testicular arteries (TAs) also known as Internal spermatic arteries are long and slender arteries usually arising from the anterolateral aspect of the abdominal aorta (AA), 2.5 cm to 5 cm caudal to the renal arteries (RA). The variation in testicular arteries may be found with respect to their origin, number or course. They can originate from the abdominal aorta itself at an abnormal level. If not arising from abdominal aorta the TA variants may arise from renal artery, supra renal artery or any one of the lumbar arteries...
April 10, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28387611/thoracic-endovascular-aortic-repair-with-single-double-chimney-technique-for-aortic-arch-pathologies
#3
Tun Wang, Chang Shu, Ming Li, Quan-Ming Li, Xin Li, Jian Qiu, Kun Fang, Alan Dardik, Chen-Zi Yang
PURPOSE: To summarize a single-center experience using the single/double chimney technique in association with thoracic endovascular aortic repairs (TEVAR) for aortic arch pathologies. METHODS: From November 2007 to March 2016, 122 patients (mean age 50.4±12.7 years, range 29-80; 92 men) with aortic arch pathologies underwent TEVAR combined with single (n=101) or double (n=21) chimney grafts to reconstruct the supra-aortic branches: 21 innominate arteries, 114 left common carotid arteries, and 8 left subclavian arteries (LSA)...
March 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28366551/outcomes-following-thoracotomy-or-thoracoscopic-vascular-ring-division-in-children-and-young-adults
#4
Melissa A Herrin, David Zurakowski, Francis Fynn-Thompson, Christopher W Baird, Pedro J Del Nido, Sitaram M Emani
OBJECTIVE: To determine the short- and intermediate-term outcomes following vascular ring division by video-assisted thoracoscopic (VATS) or thoracotomy approach. METHODS: This study is a retrospective review of patients with double aortic arch or right aortic arch with aberrant left subclavian artery and left ligamentum (RAA with LSCA/LL) who underwent division via left thoracotomy or VATS approach at a single institution. Outcome measures included operation duration (OR time), hospital length of stay (LOS), postoperative complications, and freedom from reintervention...
March 11, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28345111/prenatal-ultrasonic-diagnosis-and-differential-diagnosis-of-isolated-right-aortic-arch-with-mirror-image-branching
#5
Junxue Gao, Jiaan Zhu, Qiuyan Pei, Jianguo Li
PURPOSE: This study sought to evaluate the fetal echocardiography features of isolated right aortic arch (RAA) with mirror-image branching and to improve the rate and accuracy of prenatal diagnosis of this condition. METHODS: We reviewed fetal echocardiograms from all cases of isolated RAA with mirror-image branching diagnosed at our institution between August 2012 and December 2015 and classified these cases into normal and abnormal types of ductus arteriosus based on the course of the arterial duct arch...
March 27, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28329111/hypoplastic-left-heart-syndrome-a-novel-surgical-strategy-for-small-volume-centres
#6
Margaux Pontailler, Régis Gaudin, Marien Lenoir, Ayman Haydar, Diala Kraiche, Damien Bonnet, Pascal Vouhé, Olivier Raisky
OBJECTIVES: We describe in a prospective study, a novel surgical technique for the management of hypoplastic left heart syndrome inspired by the hybrid Norwood approach. METHODS: This new neonatal palliation comprises replacement of the patent ductus arteriosus (PDA) and aortic arch plasty with a pulmonary homograft associated with the banding of both pulmonary arteries and atrial septectomy, under cardiopulmonary bypass without aortic clamping and cardioplegia...
May 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28317554/chimpanzee-and-human-midfoot-motion-during-bipedal-walking-and-the-evolution-of-the-longitudinal-arch-of-the-foot
#7
Nicholas B Holowka, Matthew C O'Neill, Nathan E Thompson, Brigitte Demes
The longitudinal arch of the human foot is commonly thought to reduce midfoot joint motion to convert the foot into a rigid lever during push off in bipedal walking. In contrast, African apes have been observed to exhibit midfoot dorsiflexion following heel lift during terrestrial locomotion, presumably due to their possession of highly mobile midfoot joints. This assumed dichotomy between human and African ape midfoot mobility has recently been questioned based on indirect assessments of in vivo midfoot motion, such as plantar pressure and cadaver studies; however, direct quantitative analyses of African ape midfoot kinematics during locomotion remain scarce...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28316928/double-aortic-arch-diagnosed-in-a-44-year-old-woman-with-recurring-respiratory-infections
#8
Ana Fenández-Tena, Cristina Martínez-González
Complete vascular rings are originated because of the persistence of the fourth aortic arches, which surround the trachea and esophagus partially or completely, compressing them. The most common type of complete vascular ring is the double aortic arch. Symptoms usually appear in the first months of life, and are provoked by esophageal and tracheal compression. The diagnosis is usually made through the chest X-ray and the esophagogram in patients with dysphagia. We present a case in which the diagnosis of a double aortic arch was made in adulthood, suspected through a spirometry test and a chest X-ray...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28299702/optical-and-electrochemical-aptasensors-for-sensitive-detection-of-streptomycin-in-blood-serum-and-milk
#9
Mohammad Ramezani, Khalil Abnous, Seyed Mohammad Taghdisi
Detection and quantitation of antibiotic residues in blood serum and foodstuffs are in great demand. We have developed aptasensors for detection of streptomycin using electrochemical and optical methods. In the first method, an electrochemical aptasensor was developed for sensitive and selective detection of streptomycin, based on combination of exonuclease I (Exo I), complementary strand of aptamer (CS), arch shaped structure of aptamer (Apt)-CS conjugate, and gold electrode. The designed electrochemical aptasensor exhibited high selectivity toward streptomycin with a limit of detection (LOD) as low as 11...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28281415/use-of-a-biodegradable-oversized-stent-in-a-child-with-tracheomalacia-secondary-to-vascular-external-compression
#10
Giovanni Di Dedda, Cristian Mirabile
We describe the implantation of an absorbable, custom-made stent of polydioxanone to treat tracheomalacia in a 5-month-old patient with extrinsic compression by a double aortic arch. The use of an absorbable, oversized stent treated the tracheal collapse caused by vascular compression, avoided removal procedures, and allowed the infant's growth. The use of an oversized stent prevented stent migration and gave minimal problems of granulation.
January 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28275801/-effects-of-double-transparent-pressure-diaphragm-transfer-tray-on-indirect-bonding
#11
Xiao-Hong Huang, Liang Xu, Shan Lin
PURPOSE: To compare the time-consuming and bonding effectiveness of full dental arch and segmented dental arch, when double transparent pressure diaphragm technology was used for indirect bracket bonding. METHODS: Forty-five orthodontic cases were selected, and classified into 3 groups according to different bonding methods and arches. There were 15 cases in each group, a total of 270 brackets and 120 buccal tubes were used. Patients in group A and B received double transparent pressure diaphragm technology to bond brackets indirectly...
December 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28271930/plantar-static-pressure-distribution-in-normal-feet-using-cotton-socks-with-different-structures
#12
Zeynab Soltanzadeh, Saeed Shaikhzadeh Najar, Mohammad Haghpanahi, Mohammd Reza Mohajeri-Tehrani
BACKGROUND: The major goal of investigating plantar pressure in patients with pain or those at risk for skin injury is to reduce pressure under prominent metatarsal heads, especially the first and second metatarsals. In research, the insole is used to reduce plantar pressure by increasing the contact area in the midfoot region, which, in turn, induces an uncomfortable feeling near the arch during walking. It is deduced that sock structure can redistribute plantar pressure distribution...
January 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/28270208/aortic-length-measurements-for-pulse-wave-velocity-calculation-manual-2d-vs-automated-3d-centreline-extraction
#13
Arna van Engelen, Miguel Silva Vieira, Isma Rafiq, Marina Cecelja, Torben Schneider, Hubrecht de Bliek, C Alberto Figueroa, Tarique Hussain, Rene M Botnar, Jordi Alastruey
BACKGROUND: Pulse wave velocity (PWV) is a biomarker for the intrinsic stiffness of the aortic wall, and has been shown to be predictive for cardiovascular events. It can be assessed using cardiovascular magnetic resonance (CMR) from the delay between phase-contrast flow waveforms at two or more locations in the aorta, and the distance on CMR images between those locations. This study aimed to investigate the impact of different distance measurement methods on PWV. We present and evaluate an algorithm for automated centreline tracking in 3D images, and compare PWV calculations using distances derived from 3D images to those obtained from a conventional 2D oblique-sagittal image of the aorta...
March 8, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28248122/-double-homicide-with-a%C3%A2-damning-bite-mark-on-the-offender%C3%A2-s%C3%A2-body-case-report
#14
Markéta Kulvajtová, Jiří Hladík, Lucie Zemančíková
The authors deal with a case of a double homicide, the parental murder made by their older son, which was committed by a combination of stabbing and cutting wounds. The perpetra-tor tried to hide the bodies, so he doused them with gasoline and set fire to them on a lonely forest road. Then he ran over the remains by his car. The cause of death was in both cases open wound of the neck - autopsy findings of the woman´s body testified for a blood aspi-ration, on the man´s body it was not clear for a partial charring, so the possibilities were blood aspiration, air embolism or external bleeding with haemorrhagic shock...
2017: Soudní Lékarství
https://www.readbyqxmd.com/read/28241354/effect-of-fibrinogen-concentrate-on-intraoperative-blood-loss-among-patients-with-intraoperative-bleeding-during-high-risk-cardiac-surgery-a-randomized-clinical-trial
#15
RANDOMIZED CONTROLLED TRIAL
Süleyman Bilecen, Joris A H de Groot, Cor J Kalkman, Alexander J Spanjersberg, George J Brandon Bravo Bruinsma, Karel G M Moons, Arno P Nierich
Importance: Fibrinogen concentrate might partly restore coagulation defects and reduce intraoperative bleeding. Objective: To determine whether fibrinogen concentrate infusion dosed to achieve a plasma fibrinogen level of 2.5 g/L in high-risk cardiac surgery patients with intraoperative bleeding reduces intraoperative blood loss. Design, Setting, and Participants: A randomized, placebo-controlled, double-blind clinical trial conducted in Isala Zwolle, the Netherlands (February 2011-January 2015), involving patients undergoing elective, high-risk cardiac surgery (ie, combined coronary artery bypass graft [CABG] surgery and valve repair or replacement surgery, the replacement of multiple valves, aortic root reconstruction, or reconstruction of the ascending aorta or aortic arch) with intraoperative bleeding (blood volume between 60 and 250 mL suctioned from the thoracic cavity in a period of 5 minutes) were randomized to receive either fibrinogen concentrate or placebo...
February 21, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28203502/effect-of-relaxing-incisions-on-the-maxillary-growth-after-primary-unilateral-cleft-palate-repair-in-mild-and-moderate-cases-a-randomized-clinical-trial
#16
Percy Rossell-Perry, Omar Cotrina-Rabanal, Olga Figallo-Hudtwalcker, Alicia Gonzalez-Vereau
BACKGROUND: The purpose of this study was to evaluate the association between the use of relaxing incisions and maxillary growth disturbance after primary palatoplasty in patients with unilateral cleft lip and palate. METHODS: This is a prospective, randomized, double-blind controlled trial study with ethical committee approval between 2 groups of patients with unilateral cleft lip and palate who were operated on using the two-flap and one-flap techniques from 2008 to 2011...
January 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28159377/double-aortic-arch-with-previously-undescribed-head-and-neck-vessel-branching
#17
Sassan Hashemi, W James Parks, Denver Sallee, Timothy Slesnick
Vascular ring in the form of a double aortic arch is a rare anomaly that can cause airway compression. It occasionally occurs with unusual head and neck vessel branching. A 5-year-old boy with chronic respiratory symptoms was referred because of a tracheal indentation on his chest x-ray. Magnetic resonance imaging showed a double aortic arch with arch origins of a common carotid, vertebral, and subclavian on the right and internal and external carotids, vertebral, and subclavian arteries on the left. Our case represents, to our knowledge, the first report of a double aortic arch with 7 separate vessels arising from the transverse arches...
December 1, 2016: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28139484/prevalence-of-dental-anomalies-in-deciduous-dentition-and-its-association-with-succedaneous-dentition-a-cross-sectional-study-of-4180-south-indian-children
#18
G Shilpa, Niraj Gokhale, Sreekanth Kumar Mallineni, Sivakumar Nuvvula
OBJECTIVE: The objective of this study was to estimate the prevalence of dental anomalies in primary dentition of Indian population. MATERIALS AND METHODS: This cross-sectional study was conducted on 4180 children in the age of 2-6 years. Anomalies were classified based on Kreiborg criteria. The term "double tooth" was used to avoid misinterpretation between gemination. and fusion. Patients having radiographs were also examined for associated dental anomalies in permanent dentition...
January 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28139013/aortopulmonary-window-morphology-diagnosis-and-long-term-results
#19
Sachin Talwar, Palkesh Agarwal, Shiv Kumar Choudhary, Shyam Sunder Kothari, Rajnish Juneja, Anita Saxena, Balram Airan
OBJECTIVE: Aortopulmonary window (APW) is a rare congenital heart defect. We reviewed our experience with this condition over the last two decades. METHODS: Between September 1993 and December 2013, 62 patients underwent surgery for APW. Depending on the associated lesions, they were divided into two groups: Simple (Group 1) or complex (Group 2). In the complex group, six patients had a ventricular septal defect, five patients had interrupted aortic arch, three patients had tetralogy of Fallot, two patients had double outlet right ventricle, and one patient had the right pulmonary artery arising from the ascending aorta...
February 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28124188/clinical-outcome-and-safety-study-of-a-newly-developed-instrumented-french-door-cervical-laminoplasty-technique
#20
Luigi Aurelio Nasto, Samiul Muquit, Ana Belen Perez-Romera, Hossein Mehdian
BACKGROUND: Standard laminectomy for treatment of cervical myelopathy is associated with secondary instability and kyphosis, while laminectomy combined with fusion puts adjacent segments at risk of degeneration. Single- and double-door laminoplasty techniques have been developed to overcome these limitations. More recently, complications related to bone graft dislodgment have fostered development of hardware-augmented laminoplasty techniques. The aim of this study is to review the clinical safety and effectiveness of a newly developed technique of instrumented French-door laminoplasty for treatment of cervical myelopathy...
January 25, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
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