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W Z Pan, D X Zhou, X C Zhang, L Zhang, L Wei, J B Ge
Objective: To investigate the safety and efficacy of transcatheter aortic valve replacement(TAVR) through transcarotid approach for patients with severe aortic valve stenosis. Methods: The clinical data of 9 symptomatic severe aortic valve stenosis patients who had high or prohibitive risk for surgery and not suitable for TAVR through femoral artery access,and thus received TAVR through transcarotid approach in our hospital from November 2015 to February 2017 were retrospectively analyzed.The patients were followed up to observe the safety and efficacy of the procedure...
March 24, 2018: Zhonghua Xin Xue Guan Bing za Zhi
Sarah K Bick, David Huie, Gabriel Sneh, Emad N Eskandar
BACKGROUND: Trigeminal neuralgia (TN) increases in prevalence with age. Although microvascular decompression (MVD) is the most effective long-term operative treatment for TN, its use in older patient populations has been debated due to its invasive nature. Recent studies have demonstrated safety of MVD in older patients; however, efficacy data are more limited. OBJECTIVE: To determine the relationship between age and pain outcomes following MVD for TN. METHODS: Subjects underwent MVD for TN at our institution between 1/1/2004 and 12/31/2013, had typical TN, and demonstrated neurovascular compression on preoperative imaging...
March 17, 2018: Neurosurgery
Min Liu, Qing-Xian Ma, Jian-Bin Luo
20Mn5 steel is widely used in the manufacture of heavy hydro-generator shaft due to its good performance of strength, toughness and wear resistance. However, the hot deformation and recrystallization behaviors of 20Mn5 steel compressed under high temperature were not studied. In this study, the hot compression experiments under temperatures of 850-1200 °C and strain rates of 0.01/s-1/s are conducted using Gleeble thermal and mechanical simulation machine. And the flow stress curves and microstructure after hot compression are obtained...
March 21, 2018: Materials
Haw-Tyng Huang, Li Zhu, Matthew D Ward, Brian L Chaloux, Rostislav Hrubiak, Albert Epshteyn, John V Badding, Timothy A Strobel
The chemical stability of solid cubane under high-pressure was examined with in situ Raman spectroscopy and synchrotron powder X-ray diffraction (PXRD) in a diamond anvil cell (DAC) up to 60 GPa. The Raman modes associated with solid cubane were assigned by comparing experimental data with calculations based on density functional perturbation theory, and low-frequency lattice modes are reported for the first time. The equation of state of solid cubane derived from the PXRD measurements taken during compression gives a bulk modulus of 14...
March 21, 2018: Journal of Physical Chemistry Letters
Zhao-Fei Zhang, He Huang, Shuai Chen, Dong-Hua Liu, Yong-Hui Feng, Chun-Liang Xie, Feng Jiao
BACKGROUND: High-viscosity cement (HVC) has been gradually applied in percutaneous vertebroplasty (PVP) and percutaneous kyphoplasty (PKP). Although HVC has been reported to reduce cement leakage, different opinions exist. To assess the complications of HVC in cement leakage in the treatment of vertebral compression fractures and to evaluate the clinical effect of HVC compared with low-viscosity cement (LVC). METHODS: EMBASE, PubMed, Science Direct, Google Scholar and Cochrane Library databases were comprehensively searched from their inception to August 2017...
March 2018: Medicine (Baltimore)
Matthijs In 't Veld, R Fronczek, J A de Laat, Henricus P M Kunst, Frederick J A Meijer, Peter W A Willems
OBJECTIVES: Finding the underlying cause for pulsatile tinnitus can be challenging. We aimed to determine the incidence of arteriovenous shunts, i.e., arteriovenous malformations (AVMs) or dural arteriovenous fistulas (dAVFs), in patients referred for catheter angiography (digital subtraction angiography [DSA]). Furthermore, we assessed which clinical features were predictive for the presence of such a lesion. STUDY DESIGN AND METHODS: Fifty-one patients with pulsatile tinnitus, who were referred to us for DSA to exclude an arteriovenous shunt, were enrolled, prospectively...
March 20, 2018: Otology & Neurotology
Francesca Maghin, Salvatore A Andreola, Michele Boracchi, Guendalina Gentile, Francesca Maciocco, Enrico Muccino, Riccardo Zoja
The authors used a particular protocol on putrefied corpses to highlight the cutaneous furrow. Two groups of cadavers were selected: in the first group (suicide by hanging mechanical asphyxia), the authors sampled cutaneous lozenges on the furrow still macroscopically recognisable, while in the second group (corpses deceased by different means), we sampled cutaneous lozenges in the hypostatic leaning. All specimens were divided in two: one underwent standard fixation while the other, previously rehydrated in Sandison's solution, was then fixed in formalin...
January 1, 2018: Medico-legal Journal
Eloise G Harrison, Jennifer L Keating, Prue E Morgan
INTRODUCTION: Restless legs syndrome (RLS) is a sensorimotor disorder characterised by an uncomfortable urge to move the legs. Management is primarily pharmacological. Effects for non-pharmacological, non-surgical options are published but lack systematic examination. OBJECTIVES: To synthesise results of non-pharmacological/non-surgical treatment compared to no-treatment controls or alternative treatment for RLS on any relevant outcome. METHODS: Databases and reference lists of reviews were searched for randomised controlled trials (RCTs) comparing non-pharmacological treatment to alternative or no treatment controls for idiopathic RLS...
March 21, 2018: Disability and Rehabilitation
Baris Kumru, Valerio Molinari, Menny Shalom, Markus Antonietti, Bernhard V K J Schmidt
High concentration formulations of graphitic carbon nitride (g-CN) are utilized as photoinitiator and reinforcer for hydrogels. In order to integrate significant amounts of g-CN, ethylene glycol (EG) is employed as a co-solvent for the gel formation, which enables stable dispersion of up to 4 wt% g-CN. Afterwards, EG can be removed easily via solvent exchange to afford pure hydrogels. The diverse gels possess remarkably high storage moduli (up to 650 kPa for gels and 720 kPa for hydrogels) and compression moduli (up to 9...
March 21, 2018: Soft Matter
Benjamin L Ricca, Gautham Venugopalan, Saori Furuta, Kandice Tanner, Walter A Orellana, Clay D Reber, Douglas G Brownfield, Mina J Bissell, Daniel A Fletcher
Non-malignant breast epithelial cells cultured in three-dimensional laminin-rich extracellular matrix (lrECM) form well organized, growth-arrested acini, whereas malignant cells form continuously growing disorganized structures. While the mechanical properties of the microenvironment have been shown to contribute to formation of tissue-specific architecture, how transient external force influences this behavior remains largely unexplored. Here, we show that brief transient compression applied to single malignant breast cells in lrECM stimulated them to form acinar-like structures, a phenomenon we term 'mechanical reversion...
March 21, 2018: ELife
Yoshitaka Uji
BACKGROUND: Adrenal hematoma is a rare yet potentially life-threatening event that occurs both in traumatic conditions and in a variety of nontraumatic conditions. In the present study, we report the two cases with idiopathic unilateral adrenal hematoma. CASE PRESENTATION: Case 1 involved a 72-year-old man who was complaining of upper abdominal pain. Abdominal computed tomography (CT) and magnetic resonance imaging (MRI) demonstrated a giant mixed density tumor in the right retroperitoneal space...
March 21, 2018: Acta Chirurgica Belgica
Michael Galgano, Jared Fridley, Adetokunbo Oyelese, Albert Telfian, Thomas Kosztowski, David Choi, Ziya L Gokaslan
Metastatic spinal disease is a source of significant morbidity in patients with cancer. Recent advancements in adjuvant oncologic therapy has led to increased survival for many patients who harbor neoplastic disease. As a result of this, the chance of developing metastatic spinal disease over the course of a cancer patient's lifespan has increased. Symptomatic metastatic spinal disease can cause significant morbidity including severe pain, neurologic deficit, and loss of ambulation. Current treatment of these patients typically involves the use of multiple modalities, including surgery, radiation, and chemotherapy...
March 21, 2018: Expert Review of Anticancer Therapy
Jesse Lowe, Rohan Bansal, Stephen Badylak, Bryan Brown, William Chung, Alejandro Almarza
A subset of temporomandibular joint (TMJ) disorders are attributed to joint degeneration. The pig has been considered the preferred in-vivo model for the evaluation of potential therapies for TMJ disorders, and practical considerations such as cost and husbandry issues have favored the use of young, skeletally immature animals. However, the effect of growth on the biochemical and biomechanical properties of the TMJ disc and articulating cartilage has not been examined. The present study investigates the effect of age on the biochemical and biomechanical properties of healthy porcine TMJs at 3, 6, and 9 months of age...
March 19, 2018: Journal of Biomechanical Engineering
Tserenchimed Purevsuren, Myagmarbayar Batbaatar, Batbayar Khuyagbaatar, Kyungsoo Kim, Yoon Hyuk Kim
Biomechanical studies have indicated that the conventional non-anatomic reconstruction techniques for lateral ankle sprain (LAS) tend to restrict subtalar joint motion compared to intact ankle joints. Excessive restriction in subtalar motion may lead to chronic pain, functional difficulties, and development of osteoarthritis. Therefore, various anatomic surgical techniques to reconstruct both the anterior talofibular and calcaneofibular ligaments have been introduced. In this study, ankle joint stability was evaluated using multibody computational ankle joint model to assess two new anatomic reconstruction and three popular non-anatomic reconstruction techniques...
March 12, 2018: Journal of Biomechanical Engineering
Núria Baños, Carla Julià, Núria Lorente, Silvia Ferrero, Teresa Cobo, Eduard Gratacos, Montse Palacio
Background  Short cervical length (CL) has not been shown to be adequate as a single predictor of spontaneous preterm birth (sPTB) in high-risk pregnancies. Objective  The objective of this study was to evaluate the performance of the mid-trimester cervical consistency index (CCI) to predict sPTB in a cohort of high-risk pregnancies and to compare the results with those obtained with the CL. Study Design  Prospective cohort study including high-risk singleton pregnancies between 19+0 and 24+6 weeks. The ratio between the anteroposterior diameter of the uterine cervix at maximum compression and at rest was calculated offline to obtain the CCI...
January 2018: American Journal of Perinatology Reports
Steve A Aguilar, Nicholas Asakawa, Cameron Saffer, Christine Williams, Steven Chuh, Lewei Duan
Introduction: A benefit of in-hospital cardiac arrest is the opportunity for rapid initiation of "high-quality" chest compressions as defined by current American Heart Association (AHA) adult guidelines as a depth 2-2.4 inches, full chest recoil, rate 100-120 per minute, and minimal interruptions with a chest compression fraction (CCF) ≥ 60%. The goal of this study was to assess the effect of audiovisual feedback on the ability to maintain high-quality chest compressions as per 2015 updated guidelines...
March 2018: Western Journal of Emergency Medicine
Kiminori Yukata, Masaaki Murase, Takahiro Hashimoto, Yasunori Shimaoka, Toshihiko Taguchi, Junichi Hamawaki
We describe an unusual case of ulnar nerve compression (cubital tunnel syndrome) caused by synovial protrusion in primary synovial chondromatosis of the elbow in a 59-year-old man. Magnetic resonance imaging is a useful tool for diagnosing this rare condition. Surgical excision of the intra-articular multiple loose bodies and ulnar nerve decompression were performed. The clinician should be aware of primary synovial chondromatosis as one of the causative factors of cubital tunnel syndrome.
April 2018: Shoulder & Elbow
Denislene da Silva Eduardo, Suyane Benevides Franco, José Daniel Vieira de Castro
The sellar/juxtasellar region comprises the bone component of the sella turcica, pituitary gland, cavernous sinus, and suprasellar cistern. Abnormalities in this region can be attributed to underproduction or overproduction of hormones or to the neurological signs and symptoms resulting from the compression of adjacent structures. Magnetic resonance imaging (MRI) is currently the imaging method of choice, having supplanted computed tomography. The aim of this study was to demonstrate the common and uncommon imaging aspects of sellar and juxtasellar changes, which could facilitate the differential diagnosis...
January 2018: Radiologia Brasileira
Sven Augustin, Sven Frohmann, Peter Jung, Heinz-Wilhelm Hübers
Terahertz (THz) radiation meaning electromagnetic radiation in the range from 0.1 (3) to 10 (30) has the unique advantage of easily penetrating many obstructions while being non-hazardous to organic tissue since it is non-ionizing. A shortcoming of this domain is the limited availability of high-sensitivity detector arrays respective THz cameras with >1k pixels. To overcome the imaging limitations of the THz domain, compressive imaging in combination with an optically controllable THz spatial light modulator is a promising approach especially when used in a single-pixel imaging modality...
March 20, 2018: Scientific Reports
Fuqiong Jiang, Danqi Deng, Xiaolan Li, Wenfang Wang, Hong Xie, Yongzhuo Wu, Chunyan Luan, Binbin Yang
To determine clinical curative effects of ozone therapy for pemphigus vulgaris.
 Methods: Ozone hydrotherapy was used as an aid treatment for 32 patients with pemphigus vulgaris. The hydropathic compression of potassium permanganate solution for 34 patients with pemphigus vulgaris served as a control. The main treatment for both groups were glucocorticoids and immune inhibitors. The lesions of patients, bacterial infection, usage of antibiotics, patient's satisfaction, and clinical curative effect were evaluated in the 2 groups...
February 28, 2018: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
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