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https://www.readbyqxmd.com/read/29793012/endovascular-repair-of-a-penetrating-aortic-ulcer-with-a-custom-made-relay-stent-graft-featuring-a-single-celiac-trunk-fenestration-and-a-superior-mesenteric-artery-scallop
#1
G Natalicchio, A Biello, G Castriotta, M G C La Marca, G Sorino, M Salcuni
We report the case of a 70-year-old man with an asymptomatic, fast-growing, paraceliac penetrating aortic ulcer (PAU). Guidelines recommend endovascular repair if an asymptomatic PAU shows a mean growth rate ≥5 mm per year: this patient's maximum aortic diameter was 47 mm but had increased 10 mm in the previous year. The very short sealing zones required a custom-made stent-graft. A custom-made Relay stent-graft with a single celiac trunk fenestration, a superior mesenteric artery (SMA) scallop measured according to SMA ostium size, an uncovered distal stent, and 6-mm tapering was used with technical and clinical success...
May 21, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29792729/90-kvp-low-tube-voltage-ct-pulmonary-angiography-in-combination-with-advanced-modelled-iterative-reconstruction-algorithm-effects-on-radiation-dose-image-quality-and-diagnostic-accuracy-for-the-detection-of-pulmonary-embolism
#2
Doris Leithner, Tatjana Gruber-Rouh, Martin Beeres, Julian L Wichmann, Scherwin Mahmoudi, Simon S Martin, Lukas Lenga, Moritz H Albrecht, Christian Booz, Thomas J Vogl, Jan-Erik Scholtz
OBJECTIVE: To evaluate low-tube-voltage 90-kVp computed tomography pulmonary angiography (CTPA) with advanced modelled iterative reconstruction algorithm (Admire) compared to 120-kVp equivalent dual-energy acquisition with regards to radiation exposure, image quality, and diagnostic accuracy for pulmonary embolism (PE) assessment. METHODS: CTPA studies of 40 patients with suspected PE (56.7 ± 16.3 years) performed on a third-generation 192-slice dual-source CT scanner were retrospectively included...
May 24, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29792520/changes-in-the-neurovascular-anatomy-of-the-shoulder-after-an-open-latarjet-procedure-defining-a-surgical-safe-zone
#3
Christopher M LaPrade, Andrew S Bernhardson, Zachary S Aman, Gilbert Moatshe, Jorge Chahla, Grant J Dornan, Robert F LaPrade, Matthew T Provencher
BACKGROUND: Although previous literature has described the relevant anatomy for an open anterior Bankart approach of the shoulder, there is little known regarding the anatomic relationship changes in the neurovascular structures after an open Latarjet procedure. PURPOSE: To define the neurovascular anatomy of the native shoulder in relation to the coracoid and to define the anatomy after the Latarjet procedure in relation to the glenoid to determine distances to these neurovascular structures with and without neurolysis of the musculocutaneous nerve (MCN) from the conjoint tendon...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29792285/associations-between-trunk-postural-control-in-walking-and-unstable-sitting-at-various-levels-of-task-demand
#4
Julian C Acasio, Courtney M Butowicz, Pawel R Golyski, Maury A Nussbaum, Brad D Hendershot
Trunk postural control (TPC) has been investigated in several populations and tasks. Previous work observed targeted training of TPC via isolated trunk control tasks may improve performance in other activities (e.g., walking). However, the nature of this relationship remains unknown. We therefore investigated the relationship between TPC, at both the global (i.e., response to finite perturbations) and local (i.e., resistance to continuous perturbations) levels, during walking and unstable sitting, both at varying levels of task demand...
May 21, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29790098/three-step-method-for-transesophageal-echocardiography-guided-implantation-of-the-frozen-elephant-trunk-how-to-prevent-spinal-cord-injury
#5
Kazuo Yamanaka, Hisanari Ishii
Total aortic arch replacement using the frozen elephant trunk (FET) procedure has widely spread all over the world with more sophisticated devices. However, spinal cord injury is one of the most important complications, which limits the use of FET. In our hospital, 80 patients treated with FET had no spinal cord injury. There are three key points to avoid spinal cord injury, (1) The distal end of stent graft should be positioned up to the eighth thoracic vertebrae level; (2) the time for selective left subclavian artery perfusion and distal body circulatory arrest should be shortened within 60 min; and (3) mean blood pressure should be maintained above 70 mmHg...
May 22, 2018: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29787997/depth-based-whole-body-photoplethysmography-in-remote-pulmonary-function-testing
#6
Vahid Soleimani, Majid Mirmehdi, Dima Damen, Massimo Camplani, Sion Hannuna, Charles Sharp, James Dodd
OBJECTIVE: We propose a novel depth-based photoplethysmography (dPPG) approach to reduce motion artifacts in respiratory volume-time data and improve the accuracy of remote pulmonary function testing (PFT) measures. METHOD: Following spatial and temporal calibration of two opposing RGB-D sensors, a dynamic three-dimensional model of the subject performing PFT is reconstructed and used to decouple trunk movements from respiratory motions. Depth-based volume-time data is then retrieved, calibrated, and used to compute 11 clinical PFT measures for forced vital capacity and slow vital capacity spirometry tests...
June 2018: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/29787689/patient-specific-multiscale-computational-fluid-dynamics-assessment-of-embolization-rates-in-the-hybrid-norwood-effects-of-size-and-placement-of-the-reverse-blalock-taussig-shunt
#7
Ray Otto Prather, John Seligson, Marcus Ni, Eduardo Divo, Alain Kassab, William DeCampli
The hybrid Norwood operation is performed to treat hypoplastic left heart syndrome. Distal arch obstruction may compromise flow to the brain. In a variant of this procedure, a synthetic graft (RBTS) is placed between the pulmonary trunk and innominate artery to improve upper torso blood flow. Thrombi originating in the graft may embolize to the brain. In this study we used computational fluid dynamics (CFD) and particle tracking to investigate the patterns of particle embolization as a function of the anatomic position of the RBTS...
May 22, 2018: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/29787516/-microanatomy-of-sensory-nerves-in-the-upper-eyelid-a-cadaveric-anatomical-study
#8
Takuya Higashino, Mutsumi Okazaki, Hiroki Mori, Kumiko Yamaguchi, Keiichi Akita
BACKGROUND: Plastic surgery requires detailed knowledge of upper eyelid anatomy, but few authors have sufficiently described the specifics of upper eyelid nerve anatomy. This study aimed to provide a thorough description of sensory nerve anatomy in the upper eyelid and to propose considerations for upper eyelid surgery. METHODS: Sixteen orbits were dissected from sixteen fixed, adult human cadavers. Microscopically, we identified the main trunks of the infratrochlear, supratrochlear, and supraorbital nerves and all branches that projected toward the upper eyelid...
May 16, 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29787379/selection-of-bone-dosimetry-models-for-application-in-monte-carlo-simulations-to-provide-ct-scanner-specific-organ-dose-coefficients
#9
Jan T M Jansen, Paul C Shrimpton, John Richard Holroyd, Sue Edyvean
This is the second paper arising from a project concerning the application of Monte Carlo simulations to provide scanner-specific organ dose coefficients for modern CT scanners. The present focus is centred on the bone dosimetry models that have been developed. Simulations have been performed in photon only transport mode, with the assumption of electron equilibrium. This approximation breaks down for doses to active marrow and endosteum since the target cells are localised within tens of micrometre from bone tissue and dose enhancement functions are necessary to correct for the additional dose from photoelectric electrons created in adjacent material...
May 22, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29787329/sensitivity-to-change-and-responsiveness-of-the-segmental-assessment-of-trunk-control-satco-in-children-with-spinal-cord-injury
#10
Laura C Argetsinger, Shelley A Trimble, MacKenzie T Roberts, Jennifer E Thompson, Beatrice Ugiliweneza, Andrea L Behrman
PURPOSE: The purpose of this study was to assess the sensitivity and responsiveness of the Segmental Assessment of Trunk Control (SATCo) for evaluating trunk control in children with spinal cord injury (SCI) receiving activity-based locomotor training (AB-LT). METHODS: Prospective study of nine outcomes for consecutively enrolled children in outpatient AB-LT. To evaluate sensitivity to change, linear-mixed models were constructed and adjusted for covariates: age at and time since SCI...
May 22, 2018: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/29786659/deep-learning-to-predict-falls-in-older-adults-based-on-daily-life-trunk-accelerometry
#11
REVIEW
Ahmed Nait Aicha, Gwenn Englebienne, Kimberley S van Schooten, Mirjam Pijnappels, Ben Kröse
Early detection of high fall risk is an essential component of fall prevention in older adults. Wearable sensors can provide valuable insight into daily-life activities; biomechanical features extracted from such inertial data have been shown to be of added value for the assessment of fall risk. Body-worn sensors such as accelerometers can provide valuable insight into fall risk. Currently, biomechanical features derived from accelerometer data are used for the assessment of fall risk. Here, we studied whether deep learning methods from machine learning are suited to automatically derive features from raw accelerometer data that assess fall risk...
May 22, 2018: Sensors
https://www.readbyqxmd.com/read/29786465/trunk-stability-enabled-by-non-invasive-spinal-electrical-stimulation-after-spinal-cord-injury
#12
Mrinal Rath, Albert H Vette, Shyamsundar Ramasubramaniam, Kun Li, Joel Burdick, Victor Reggie Edgerton, Yury Gerasimenko, Dimitry Sayenko
Electrical neuromodulation of spinal networks improves the control of movement of the paralyzed limbs after spinal cord injury (SCI). However, the potential of non-invasive spinal stimulation to facilitate postural trunk control during sitting in humans with SCI has not been investigated. We hypothesized that transcutaneous electrical stimulation of the lumbosacral enlargement can improve trunk posture. Eight participants with non-progressive SCI, C3-T9, AIS A or C, performed different motor tasks during sitting...
May 22, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29786413/frozen-elephant-trunk-and-arch-endografts-for-chronic-thoracoabdominal-aortic-dissections
#13
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/29783715/location-location-location-signals-in-muscle-specification
#14
REVIEW
Chih-Ning Chang, Chrissa Kioussi
Muscles control body movement and locomotion, posture and body position and soft tissue support. Mesoderm derived cells gives rise to 700 unique muscles in humans as a result of well-orchestrated signaling and transcriptional networks in specific time and space. Although the anatomical structure of skeletal muscles is similar, their functions and locations are specialized. This is the result of specific signaling as the embryo grows and cells migrate to form different structures and organs. As cells progress to their next state, they suppress current sequence specific transcription factors (SSTF) and construct new networks to establish new myogenic features...
May 18, 2018: Journal of Developmental Biology
https://www.readbyqxmd.com/read/29783068/reliability-of-the-star-excursion-balance-test-and-two-new-similar-protocols-to-measure-trunk-postural-control
#15
Diego López-Plaza, Casto Juan-Recio, David Barbado, Iñaki Ruiz-Pérez, Francisco J Vera-Garcia
BACKGROUND: Although the Star Excursion Balance test (SEBT) has shown a good intra-session reliability the inter-session reliability of this test has not been deeply studied. Furthermore, there is an evident high influence of the lower-limbs in the performance of the SEBT so even if it has been used to measure core stability it is possibly not the most suitable measurement. OBJECTIVE: The aims of this study were: i) to assess the absolute and relative between-session reliability of the SEBT and two novel variations of this test to assess trunk postural control while sitting, i...
May 18, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29782538/regulatory-effects-of-root-pruning-on-leaf-nutrients-photosynthesis-and-growth-of-trees-in-a-closed-canopy-poplar-plantation
#16
Da-Wei Jing, Zhen-Yu Du, Ming-You Wang, Qing-Hua Wang, Hai-Lin Ma, Fang-Chun Liu, Bing-Yao Ma, Yu-Feng Dong
A plantation of 5-year-old poplar Populus × euramericana cv. 'Neva' was used to study the regulatory effects of root pruning on nutrients, photosynthetic characteristics, and water-use efficiency (WUE) of leaves and growth rates of diameter at breast height (DBH; 1.3 m), tree height, and volume. Six root-pruning treatments were conducted with different combinations of intensity (at a distance of six, eight or ten times DBH from the trunk) and orientation (on two or four sides of the trees). Results showed that the N, P, K, photosynthetic rate, transpiration rate, and stomatal conductance of leaves were all significantly decreased by root pruning over the initial period following root pruning (30 days), but increased in the subsequent investigations...
2018: PloS One
https://www.readbyqxmd.com/read/29782307/cutaneous-manifestations-of-tuberous-sclerosis
#17
Mirjana Bakić, Marina Ratković, Branka Gledović, Balsa Vujović, Danilo Radunović, Vera Babić, Vladimir Prelević
Dear Editor, Tuberous sclerosis (TS) is an autosomal dominant multisystem disease, which occurs due to genetically determined hyperplasia of ectodermal and mesodermal cells. Clinical manifestations present on the skin and in the nervous system, kidneys, heart, and other organs. Recent studies estimate the incidence of TS at 1/6000 to 1/10,000 live births, and a prevalence in the general population of approximately 1 in 20,000 (1). There are two different genetic loci responsible for TS: 9q34 (TSC1-hamartin) and 16p13...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29782181/effectiveness-of-an-osteopathic-abdominal-manual-intervention-in-pain-thresholds-lumbopelvic-mobility-and-posture-in-women-with-chronic-functional-constipation
#18
María José Martínez-Ochoa, Juan Carlos Fernández-Domínguez, Jose Miguel Morales-Asencio, Javier González-Iglesias, François Ricard, Ángel Oliva-Pascual-Vaca
OBJECTIVES: To assess the effect of an osteopathic abdominal manual intervention (AMI) on pressure pain thresholds (PPTs), mobility, hip flexibility, and posture in women with chronic functional constipation. DESIGN: Randomized, double-blind placebo-controlled trial. SETTING/LOCATION: Subjects were recruited for the study by referral from different gastroenterology outpatient clinics in the city of Madrid (Spain). SUBJECTS: Sixty-two patients suffering from chronic functional constipation according to the guidelines of the Congress of Rome III...
May 21, 2018: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/29782142/projection-based-3d-printing-of-cell-patterning-scaffolds-with-multi-scale-channels
#19
Dai Xue, Yancheng Wang, Jiaxin Zhang, Deqing Mei, Yue Wang, Shaochen Chen
To fully actualize artificial, cell-laden biological models in tissue engineering, such as 3D organoids and organs-on-a-chip systems, cells need to be patterned such that they can precisely mimic natural microenvironments in vitro. Despite increasing interest in this area, patterning cells at multiscales (~10 μm - 10 mm) remains a significant challenge in bioengineering. Here we report a projection-based 3D printing system that achieves rapid and high-resolution fabrication of hydrogel scaffolds featuring intricate channels for multi-scale cell patterning...
May 21, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29782023/double-stranded-rna-oral-delivery-methods-to-induce-rna-interference-in-phloem-and-plant-sap-feeding-hemipteran-insects
#20
Saikat Kumar B Ghosh, Wayne B Hunter, Alexis L Park, Dawn E Gundersen-Rindal
Phloem and plant sap feeding insects invade the integrity of crops and fruits to retrieve nutrients, in the process damaging food crops. Hemipteran insects account for a number of economically substantial pests of plants that cause damage to crops by feeding on phloem sap. The brown marmorated stink bug (BMSB), Halyomorpha halys (Heteroptera: Pentatomidae) and the Asian citrus psyllid (ACP), Diaphorina citri Kuwayama (Hemiptera: Liviidae) are hemipteran insect pests introduced in North America, where they are an invasive agricultural pest of high-value specialty, row, and staple crops and citrus fruits, as well as a nuisance pest when they aggregate indoors...
May 4, 2018: Journal of Visualized Experiments: JoVE
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