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https://www.readbyqxmd.com/read/28228242/effect-of-vitamin-d-deficiency-on-the-laryngo-pharyngeal-tract
#1
Abdul-Latif Hamdan, Ghina Fakhri, Ghassan Haddad, Gabriel Dunya, Doja Sarieddine, Bilal Turfe, Georges Tabet, Sami Azar
OBJECTIVE: To investigate the effect of vitamin D deficiency on the laryngopharyngeal tract. STUDY DESIGN: Prospective cohort study. SETTING: Tertiary care center. SUBJECTS AND METHODS: A total of 38 human subjects were prospectively recruited, equally divided into two groups. The Vitamin D deficiency group defined as 25-OH<25ng/dl and the control subjects with normal vitamin D level defined as 25-OH>25ng/dl. The presence and severity of vocal tract symptoms was assessed using the Vocal Tract Discomfort score...
February 13, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/28227925/principal-component-analysis-can-decrease-neural-networks-performance-for-incipient-falls-detection-a-preliminary-study-with-hands-and-feet-accelerations
#2
Fiorenzo Artoni, Dario Martelli, Vito Monaco, Silvestre Micera, Fiorenzo Artoni, Dario Martelli, Vito Monaco, Silvestre Micera
Fall-related accidents constitute a major problem for elderly people and a burden to the health-care national system. It is therefore important to design devices (e.g., accelerometers) and machine learning algorithms able to recognize incipient falls as quickly and reliably as possible. Blind source separation (BSS) methods are often used as a preprocessing step before classification, however the effects of BSS on classification performance are not well understood. The aim of this work is to preliminarily characterize the effect that two methods, namely Principal and Independent Component Analysis (PCA and ICA) and their combined use have on the performance of a neural network in detecting incipient falls...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227085/an-object-oriented-model-of-the-cardiopulmonary-system-with-emphasis-on-the-gravity-effect
#3
Chuong Ngo, Silvia Briones Herranz, Berno Misgeld, Thomas Vollmer, Steffen Leonhardt, Chuong Ngo, Silvia Briones Herranz, Berno Misgeld, Thomas Vollmer, Steffen Leonhardt, Thomas Vollmer, Steffen Leonhardt, Chuong Ngo, Berno Misgeld
We introduce a novel comprehensive model of the cardiopulmonary system with emphasis on perfusion and ventilation distribution along the vertical thorax axis under the gravity effect. By using an object-oriented environment, the complex physiological system can be represented by a network of electrical, lumped-element compartments. The lungs are divided into three zones: upper, middle, and lower zone. Blood flow increases with the distance from the apex to the base of the lungs. The upper zone is characterized by a complete collapse of the pulmonary capillary vasculature; thus, there is no flow in this zone...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226876/brain-activation-profiles-in-mtbi-evidence-from-erp-activity-of-working-memory-response
#4
Lianyang Li, Xianghong Arakaki, Thao Tran, Michael Harrington, Nikhil Padhye, George Zouridakis, Lianyang Li, Xianghong Arakaki, Thao Tran, Michael Harrington, Nikhil Padhye, George Zouridakis, Nikhil Padhye, Xianghong Arakaki, Thao Tran, Michael Harrington, George Zouridakis, Lianyang Li
In this study we analyzed event related potentials (ERPs) obtained in an N-back working memory test that varied in difficulty from 0- to 2-back. We collected 21 channels of activity from 11 mild traumatic brain injury (mTBI) patients and 7 normal controls, on three different visits, and used the amplitude and latency of the P300 component to characterize the subjects. A preprocessing procedure based on independent component analysis was used first to identify and eliminate electrophysiological noise on a single trial basis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226262/an-urban-runoff-model-designed-to-inform-stormwater-management-decisions
#5
Nicole G Beck, Gary Conley, Lisa Kanner, Margaret Mathias
We present an urban runoff model designed for stormwater managers to quantify runoff reduction benefits of mitigation actions that has lower input data and user expertise requirements than most commonly used models. The stormwater tool to estimate load reductions (TELR) employs a semi-distributed approach, where landscape characteristics and process representation are spatially-lumped within urban catchments on the order of 100 acres (40 ha). Hydrologic computations use a set of metrics that describe a 30-year rainfall distribution, combined with well-tested algorithms for rainfall-runoff transformation and routing to generate average annual runoff estimates for each catchment...
February 19, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28220285/oral-cancer-early-detection-what-do-patients-need-to-know
#6
Yazan Hassona, F Sawair, D Matarweh, A Abdalhamid, D Thweib, C Scully
The purpose of the present study was to examine the educational needs of patients regarding early detection of oral cancer. A total of 790 patients without cancer were interviewed and shown a set of validated clinical images of various oral lesions including early oral cancer. Participants were asked about their perception of cancer and the action that they would take if they notice a similar lesion. Lower risk lesions (e.g., lumps) were more likely to be perceived as cancer (52.4%), while higher risk lesions (e...
February 20, 2017: Journal of Cancer Education: the Official Journal of the American Association for Cancer Education
https://www.readbyqxmd.com/read/28218352/concomitant-pulsatile-and-continuous-flow-vad-in-biventricular-and-univentricular-physiology-a-comparison-study-with-a-numerical-model
#7
Arianna Di Molfetta, Gianfranco Ferrari, Roberta Iacobelli, Sergio Filippelli, Paolo Guccione, Libera Fresiello, Gianluigi Perri, Antonio Amodeo
INTRODUCTION: To develop and test a lumped parameter model to simulate and compare the effects of the simultaneous use of continuous flow (CF) and pulsatile flow (PF) ventricular assist devices (VADs) to assist biventricular circulation vs. single ventricle circulation in pediatrics. METHODS: Baseline data of 5 patients with biventricular circulation eligible for LVAD and of 5 patients with Fontan physiology were retrospectively collected and used to simulate patient baselines...
February 11, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28217605/a-rare-cause-of-misdiagnosis-in-chest-x-ray
#8
Carlos Manuel Ortiz-Mendoza
Chest X-ray is a usual tool for family physicians; however, unexpected findings in chest X-ray are a frequent challenge. We present a rare case of pulmonary hilar nodule misdiagnosis in a chest X-ray. An 84-year-old woman was sent with a diagnosis of a right pulmonary hilum nodule. She had a history of chronic obstructive pulmonary disease; so in a chest X-ray, her family physician discovered a "nodule" in her right lung hilum. Her physical exam was not relevant. In our hospital, a thoracic computed tomography (CT) scan verified the mass in the right pulmonary hilum; nevertheless, in a coronal CT scan, the "hilum lump" was the tortuous descending aorta that created an angle...
July 2016: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/28217105/how-many-dystonias-clinical-evidence
#9
REVIEW
Alberto Albanese
Literary reports on dystonia date back to post-Medieval times. Medical reports are instead more recent. We review here the early descriptions and the historical establishment of a consensus on the clinical phenomenology and the diagnostic features of dystonia syndromes. Lumping and splitting exercises have characterized this area of knowledge, and it remains largely unclear how many dystonia types we are to count. This review describes the history leading to recognize that focal dystonia syndromes are a coherent clinical set encompassing cranial dystonia (including blepharospasm), oromandibular dystonia, spasmodic torticollis, truncal dystonia, writer's cramp, and other occupational dystonias...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28216303/superficial-acral-fibromyxoma-a-rare-soft-tissue-tumor
#10
José M Braga, Isabel Bartosch, Helena Baldaia, Isabel Oliveira, Aurea Canelhas, Álvaro Silva
Superficial acral fibromyxoma is a rare clinical entity, first described in 2001. It is a soft tissue tumor with a predilection for the fingers and toes. Since it was described, few cases have been reported. We present a case of an 88-year-old male with a history of a slow-growing lump in his left great toe after local trauma. The patient underwent surgical excision, and pathologic analysis revealed the diagnosis of superficial acral fibromyxoma. Although an unusual diagnosis, surgeons should be aware of this myxoid tumor, which requires complete surgical excision and short-term follow-up to detect recurrence...
February 16, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28215183/yolk-sac-tumor-in-the-abdominal-wall-of-an-18-month-old-girl-a-case-report
#11
Machiel van den Akker, Dirk Vervloessem, An Huybrechs, Sabine Declercq, Jutte van der Werff Ten Bosch
BACKGROUND: Pediatric germ cell tumors account for approximately 3.5 % of all childhood cancers for children under the age of 15 years. Up to one-third are extragonadal neoplasms. Germ cell tumors are a heterogeneous group of malignant tumors with a wide variety of histopathological features. Yolk sac tumor is the predominant variant in newborns and younger children. We report for the first time, the presentation of a primary yolk sac tumor in the abdominal wall of a small child. CASE PRESENTATION: An 18-month-old white girl underwent resection of a small, round subcutaneous lump (1...
February 20, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28209177/is-posture-related-craniospinal-compliance-shift-caused-by-jugular-vein-collapse-a-theoretical-analysis
#12
Manuel Gehlen, Vartan Kurtcuoglu, Marianne Schmid Daners
BACKGROUND: Postural changes are related to changes in cerebrospinal fluid (CSF) dynamics. While sitting up leads to a decrease in cranial CSF pressure, it also causes shifts in the craniospinal CSF volume and compliance distribution. We hypothesized that jugular vein collapse in upright posture is a major contributor to these shifts in CSF volume and compliance. METHODS: To test this hypothesis, we implemented a mathematical lumped-parameter model of the CSF system and the relevant parts of the cardiovascular system...
February 16, 2017: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/28208935/mature-teratoma-at-left-lumbar-region-in-an-infant-a-case-report
#13
Rajendra Kumar Ghritlaharey
Common location of teratomas in children are sacrococcygeal, gonadal, mediastinal and retroperitoneal, but teratomas may also occur at very unusual locations. A six-month-old boy presented with a large swelling at his left lumbar region. He presented with gradually increasing lump at his back, involving more on left lumbar region and midline since birth. Clinical examination revealed a solitary, non-tender, soft to firm, irregular mass, occupying more on his left lumbar and midline region and also crossing the midline...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28199882/mesenteric-inflammatory-pseudotumor-a-difficult-diagnosis-case-report
#14
Vítor Neves Lopes, César Alvarez, M Jesus Dantas, Carla Freitas, João Pinto-de-Sousa
INTRODUCTION: Inflammatory pseudotumor (IP) is an uncommon benign neoplasm. It was first described in the lung but it has been recognized in several somatic and visceral locations. Mesenteric presentation is rare and its clinical presentation is variable but patients can be completely asymptomatic. Complete surgical resection is the only curable treatment. Rational follow-up protocols have not been established yet. PRESENTATION OF CASE: A 57 years-old man, with no relevant comorbidities and completely asymptomatic, apart from a lump on the right hypochondrium, was submitted to surgical resection of a large mesenteric mass...
February 2, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28198059/gigahertz-electromagnetic-structures-via-direct-ink-writing-for-radio-frequency-oscillator-and-transmitter-applications
#15
Nanjia Zhou, Chengye Liu, Jennifer A Lewis, Donhee Ham
Radio-frequency (RF) electronics, which combine passive electromagnetic devices and active transistors to generate and process gigahertz (GHz) signals, provide a critical basis of ever-pervasive wireless networks. While transistors are best realized by top-down fabrication, relatively larger electromagnetic passives are within the reach of printing techniques. Here, direct writing of viscoelastic silver-nanoparticle inks is used to produce a broad array of RF passives operating up to 45 GHz. These include lumped devices such as inductors and capacitors, and wave-based devices such as transmission lines, their resonant networks, and antennas...
February 15, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28195109/metastatic-nasopharyngeal-carcinoma-presenting-as-an-isolated-breast-mass-a-diagnostic-pitfall-and-a-review-of-literature
#16
Trupti Pai, Nita Nair, Gauri Pantvaidya, Kedar Deodhar, Tanuja Shet
Metastases to breast are much rarer than primary breast tumors. We now present a case of 45-year-old female, who presented with an isolated breast mass. A positron emission tomography-computed tomography (PET-CT) done revealed hypermetabolic right breast nodules, soft tissue deposits, and multiple nodal involvement. The biopsy from the breast and axillary lymph node showed dense lymphoid infiltrate and was interpreted initially as granulomatous inflammation. However, the lumps were hard and suspicious for primary breast cancer, so an immunohistochemistry for cytokeratin was performed which highlighted the epithelial cell clusters masked within the inflammatory infiltrate and the diagnosis of undifferentiated carcinoma, lymphoepithelioma-like was made...
January 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28193643/an-unusual-vaginal-lump
#17
Stella Clare Seppings, Hashim Samir, Islam Abdelrahman
A 46-year-old woman presented with a 2-week history of a painless golf ball sized lump in her vagina. Despite transvaginal ultrasound scan, biopsy and MRI, it was only after surgery had been performed that it became clear what the nature of the mass actually was.Immunohistochemistry revealed the lump to be an aggressive angiomyxoma. Follow-up MRI showed residual (or recurrence of) angiomyxoma which was successfully treated with monthly injections of Prostap (leuprorelin acetate), a gonadotropin-releasing hormone agonist...
February 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28193218/a-combined-model-reduction-algorithm-for-controlled-biochemical-systems
#18
Thomas J Snowden, Piet H van der Graaf, Marcus J Tindall
BACKGROUND: Systems Biology continues to produce increasingly large models of complex biochemical reaction networks. In applications requiring, for example, parameter estimation, the use of agent-based modelling approaches, or real-time simulation, this growing model complexity can present a significant hurdle. Often, however, not all portions of a model are of equal interest in a given setting. In such situations methods of model reduction offer one possible approach for addressing the issue of complexity by seeking to eliminate those portions of a pathway that can be shown to have the least effect upon the properties of interest...
February 13, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28191810/gist-institutional-experience-at-srms-ims-india
#19
Shubhanshu Gupta, Keshri Amit, Ashish Gupta, Tanu Argawal
Gastro-Intestinal Stromal Tumors (GIST) is a malignant, non-epithelial, mesenchymal tumor of the digestive tract that is not uncommon in clinical practice nowadays; diagnosis being based upon immuno-histo-chemical analysis of the resected or biopsied (FNAC) specimen. Abdominal lump with or without intra-luminal bleed is a common mode of presentation. Early diagnosis and appropriate management with surgery and/or Imatinib therapy improves recurrence free survival and may impact overall survival. We present here our institutional experience of four patients, admitted in Onco-Surgery Dept...
September 2016: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28189118/case-report-of-ovary-and-fallopian-tube-as-content-of-a-spigelian-hernia-a-rare-entity
#20
Pralaya Khadka, Sunil K Sharma Dhakal
INTRODUCTION: Spigelian hernia is a rare entity, comprising 1-2% of all hernias. Various abdominopelvic viscera herniate through the defect in the Spigelian fascia and become incarcerated. Specifically in females, the ovary and/or the fallopian tube can herniate through this defect. This is the third reported case of such a hernia. PRESENTATION OF CASE: We report here a young lady aged 30 years with right-sided ovarian Spigelian hernia. She presented with a painful lump in the right lower quadrant of abdomen for 2 weeks...
January 28, 2017: International Journal of Surgery Case Reports
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