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https://www.readbyqxmd.com/read/28319215/number-and-location-of-mini-implants-retaining-a-mandibular-overdenture-to-resist-lateral-forces-a-preliminary-in-vitro-study
#1
Kyozo Takagaki, Tomoya Gonda, Yoshinobu Maeda
PURPOSE: The aim of this study was to determine the optimal number and location of mini-implants retaining an overdenture to resist lateral forces. MATERIALS AND METHODS: A strain gauge was attached to a mini-implant and placed in an edentulous mandible model. The following different implant locations were evaluated: one mini-implant at the midline, two mini-implants in the lateral incisor regions, two mini-implants in the canine regions, and four mini-implants...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28315577/altered-functional-connectivity-in-brain-networks-underlying-self-referential-processing-in-delusions-of-reference-in-schizophrenia
#2
Sara Larivière, Katie M Lavigne, Todd S Woodward, Philip Gerretsen, Ariel Graff-Guerrero, Mahesh Menon
Delusions of reference in schizophrenia are thought to result from misattributions of self-relevance to neutral events. Activation of regions within the cortical midline structures (CMS; e.g., medial prefrontal cortex, cingulate cortex, and precuneus) have been previously associated with self-referential processing in schizophrenia patients; however, the specificity of this pattern to individuals with current delusions of reference has yet to be determined. In the present study, we identified functional brain networks that underlie self-referential processing using task-based multivariate functional connectivity...
March 9, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28315367/perturbation-of-old-knowledge-precedes-integration-of-new-knowledge
#3
Xiaoping Fang, Charles A Perfetti
The importance of memory consolidation in integrating new knowledge has received much recent attention in the field of word learning. Less examined is the change in existing word knowledge as a result of learning, which we hypothesize to occur prior to the opportunity for consolidation. To test this, we had participants learn new meanings for known words and novel words. Then they performed a one-back task on a list of words that included the trained words followed by words that probed either their new or original meanings while EEGs were recorded...
March 14, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28315152/bilateral-robotic-transabdominal-adrenalectomy-in-a-patient-with-intestinal-malrotation
#4
Zuliang Feng, Carmen C Solórzano
Bilateral adrenalectomy is the preferred surgical approach for patients with failed treatments for pituitary-based Cushing's syndrome. Intestinal malrotation (IM) is a rare congenital anatomic variant that rarely affects adults. The abnormal abdominal anatomy is concerning to surgeons planning elective procedures in such patients. Here, we describe a bilateral robotic transabdominal adrenalectomy (RTA) in a patient with IM. A 29-year-old female presented with refractory pituitary-based Cushing's syndrome and was found to have IM on preoperative CT scan...
March 17, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28314089/electrosurgery-reduces-blood-loss-and-immediate-postoperative-inflammation-compared-to-cold-instruments-for-midline-celiotomy-in-dogs-a-randomized-controlled-trial
#5
Lee B Meakin, Jo C Murrell, Ivan C P Doran, Toby G Knowles, Michael S Tivers, Guillaume P A Chanoit
OBJECTIVES: To compare the use of an electrosurgical device with traditional cold instruments (scalpel and scissors) for midline celiotomy incision. STUDY DESIGN: Prospective randomized controlled clinical trial. SAMPLE POPULATION: One hundred and twenty client-owned dogs undergoing abdominal surgery. METHODS: Dogs were prospectively recruited and randomized to receive electroincision or cold instrument incision. For cold incision, surgeons used basic surgical instruments including scalpel and scissors...
March 17, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28306734/simultaneous-liver-kidney-transplantation-and-bilateral-nephrectomy-through-a-midline-is-feasible-and-safe-in-polycystic-disease
#6
Ina Jochmans, Diethard Monbaliu, Laurens J Ceulemans, Jacques Pirenne, Jiri Fronek
In Eurotransplant, 50% of simultaneous liver kidney transplantations (SLK) are performed for polycystic disease. Classically, liver and kidney are transplanted in two steps: liver through a subcostal incision, kidney through a separate oblique incision. Liver and kidney volume can make this 'two-step' procedure challenging, especially if simultaneous native nephrectomy is indicated. A 'one-step' SLK through a xiphopubic laparotomy might be a safe alternative, facilitating mobilization of the voluminous polycystic liver and native nephrectomy whilst offering access to iliac fossae for kidney transplantation...
2017: PloS One
https://www.readbyqxmd.com/read/28306331/intraoperative-radiographic-determination-of-ureteral-length-as-a-method-of-determining-ideal-stent-length
#7
Keith Barrett, Daniela Ghiculete, Robert J Sowerby, Monica Farcas, Kenneth T Pace, Richardson John D'Arcy Honey
INTRODUCTION: Accurate determination of ureteral length (UL) and appropriate stent length remains a challenge. The objective of this study was to describe an intraoperative technique to measure UL and determine appropriate stent length, and to compare this technique with other methods of determining appropriate stent length. METHODS: Patients undergoing ureteroscopy requiring postoperative stenting and who had a preoperative CT were prospectively identified. Gender, age, height, body mass index, L1 to L5 lumbar height on CT, and surgeon's estimate of UL were recorded...
March 17, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28306330/effect-of-changing-the-head-position-on-accuracy-of-transverse-measurements-of-the-maxillofacial-region-made-on-cone-beam-computed-tomography-and-conventional-posterior-anterior-cephalograms
#8
Abbas Shokri, Amirfarhang Miresmaeili, Nasrin Farhadian, Sepideh Falah-Kooshki, Payam Amini, Najmeh Mollaie
OBJECTIVES: This study aimed to assess the effect of head position on the accuracy of transverse measurements of the maxillofacial region on cone beam computed tomography (CBCT) and conventional posterior-anterior (PA) cephalograms. The second objective of this study was to find skull positions with the greatest and smallest effect on transverse measurements in the maxillofacial region. METHODS: PA cephalograms and CBCT scans were obtained from 10 dry human skulls in seven positions namely the central position, 10° and 20° rotations, 10° and 20° tilts and 10° and 20° tips...
March 17, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28306130/brain-connectivity-is-altered-by-extreme-physical-exercise-during-non-rem-sleep-and-wakefulness-indications-from-eeg-and-fmri-studies
#9
D Menicucci, C Gentili, A Piarulli, M Laurino, S Pellegrini, F Mastorci, R Bedini, D Montanaro, L Sebastiani, A Gemignani
Brain connectivity is associated to behavioral states (e.g. wake, sleep) and modified by physical activity although, to date, it is not clear which components (e.g. hypothalamus-pituitary-adrenal axis hormones, cytokines) associated to the exercise are involved. In this pilot study, we used extreme exercise (UltraTriathlon) as a model to investigate physical-activity-related changes of brain connectivity. We studied post-race brain synchronization during wakefulness and sleep as well as possible correlations between exercise-related cytokines/hormones and synchronization features...
December 1, 2016: Archives Italiennes de Biologie
https://www.readbyqxmd.com/read/28304197/endovascular-treatment-of-a-dural-arteriovenous-fistula-in-a-patient-with-loeys-dietz-syndrome-a-case-report
#10
Rie Aoki, Kittipong Srivatanakul, Takahiro Osada, Kazuko Hotta, Takatoshi Sorimachi, Mitsunori Matsumae, Hiroko Morisaki
Background Loeys-Dietz syndrome (LDS) is a recently recognized autosomal dominant connective tissue disease. The manifestations of LDS include vascular tortuosity, scoliosis, craniosynostosis, aneurysm and aortic dissections. Clinical presentation A 35-year-old woman treated with Stanford type B aortic dissection and breast cancer was referred to us for Borden type II dural arteriovenous fistula (dAVF) draining to the vein of Galen, involving the midline of tentorium cerebelli. The dAVF was treated successfully by combined transarterial and transvenous embolization...
April 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28303872/-perforated-peptic-ulcer-closure-laparoscopic-or-open
#11
A V Alekberzade, N N Krylov, E A Rustamov, D A Badalov, M A Popovtsev
AIM: To compare laparoscopic and open closure of perforated peptic ulcer (PPU). MATERIAL AND METHODS: The study included 153 patients who underwent PPU suturing. 78 patients underwent laparoscopic closure (laparoscopic group) and open suturing via upper midline laparotomy was performed in 75 cases (open group). Surgery time, postoperative pain severity, time of analgesics intake, postoperative complications, hospital-stay and and cosmetic effect were compared. RESULTS: Laparoscopic PPU closure may be effective and accessible in experienced endoscopic surgeon...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28303561/extraforaminal-lumbar-interbody-fusion-at-the-l5-s1-level-technical-considerations-and-feasibility
#12
Arthur Robert Kurzbuch, Denis Kaech, Pawel Baranowski, Alicja Baranowska, Didier Recoules-Arche
Background Extraforaminal lumbar interbody fusion (ELIF) surgery is a muscle-sparing approach that allows the treatment of various degenerative spinal diseases. It is technical challenging to perform the ELIF approach at the L5-S1 level because the sacral ala obstructs the view of the intervertebral disk space. Methods We reported earlier on the ELIF technique in which the intervertebral disk is targeted at an angle of 45 degrees relative to the midline. In this article we describe the technical process we developed to overcome the anatomic relation between the sacral ala and the intervertebral disk space L5-S1 that hinders the ELIF approach at this level...
March 16, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28303070/discrimination-between-spinal-extradural-meningioma-and-both-intra-and-extradural-meningioma-case-report
#13
Kenyu Ito, Shiro Imagama, Kei Ando, Kazuyoshi Kobayashi, Tetsuro Hida, Mikito Tsushima, Akiyuki Matsumoto, Masayoshi Morozumi, Satoshi Tanaka, Yoshihiro Nishida, Naoki Ishiguro
Meningiomas are common spinal tumor and mostly located at intradura. Recurrence rate after surgery for extradural meningioma was higher than intradural meningioma. A patient with intra and extradural spinal meningioma was treated and discussed its features and clinical management. A 41-year-old woman noted numbness of bilateral legs, gait disturbance, and mild bladder disturbance for over the two-month period. Magnetic resonance imaging revealed an epidural mass at T8-9 involving the dura mater from the left side...
February 2017: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/28302233/an-unusual-case-of-caecal-volvulus-due-to-appendicitis-successfully-managed-by-caecopexy
#14
Samiullah Bhatti, Mahmood Ayyaz Khan, Waris Farooka, Usman Ismat Butt, Usman Ali Rehman, Awais Amjad Malik
Caecal volvulus is a rare cause of intestinal obstruction. Caecal volvulus precipitated by acute appendicitis is even rarer. We report an unusual case of caecal volvulus with acute appendicitis as a cause. A 55-year female presented in surgical emergency with 3 days history of abdominal pain, distension and absolute constipation; and 2 days history of vomiting. Her past surgical history was significant for hysterectomy 5 years back. On examination, abdomen was distended and bowel sounds exaggerated. X-ray abdomen erect showed a single large air fluid level in the right hemiabdomen...
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28301395/increased-anatomic-severity-in-appendicitis-is-associated-with-outcomes-in-a-south-african-population
#15
Matthew C Hernandez, Victor Y Kong, Johnathon M Aho, John L Bruce, Stephanie F Polites, Grant L Laing, Martin D Zielinski, Damian L Clarke
BACKGROUND: Severity of emergency general surgery diseases (EGS) has not been standardized until recently. The American Association for the Surgery of Trauma (AAST) proposed an anatomic severity grading system for EGS diseases to facilitate communication and quality comparisons between providers and hospitals. Previous work has demonstrated validity of the system for appendicitis in the United States. In order to demonstrate generalizability, we aim to externally validate this grading system in South African patients with appendicitis...
March 15, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28300175/dynamic-cortical-participation-during-bilateral-cyclical-ankle-movements-effects-of-aging
#16
Takashi Yoshida, Kei Masani, Karl Zabjek, Robert Chen, Milos R Popovic
The precise role of the human primary motor cortex in walking is unknown. Our previous study showed that the primary motor cortex may contribute to specific requirements of walking (i.e., maintaining a constant movement frequency and bilaterally coordinating the feet). Because aging can impair (i) the ability to fulfill the aforementioned requirements and (ii) corticomuscular communication, we hypothesized that aging would impair the motoneuronal recruitment by the primary motor cortex during bilateral cyclical movements...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28299538/decompressive-surgery-in-malignant-cerebral-venous-sinus-thrombosis-what-predicts-its-outcome
#17
Rohan Mahale, Anish Mehta, Ravi Gopal Varma, Alangar S Hegde, Purushottam T Acharya, Rangasetty Srinivasa
Cerebral venous sinus thrombosis (CVST) is common in Asians, accounting for 15% of all strokes in the young. CVST causing malignant cerebral oedema with brain herniation and death are referred as malignant CVST. This study was aimed at evaluating the outcome of patients and factors predicting the outcome with malignant CVST after decompressive surgery. It was a retrospective, observational, single centre, hospital-based and cross-sectional study. Records of patients with malignant CVST who had decompressive surgery were analysed...
March 16, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28299533/clival-paragangliomas-a-report-of-two-cases-involving-the-midline-skull-base-and-review-of-the-literature
#18
Jacob Ruzevick, Eun Kyung Koh, Luis F Gonzalez-Cuyar, Patrick J Cimino, Kristen Moe, Lorena A Wright, Richard Failor, Manuel Ferreira
Head and neck paragangliomas are rare neuroendocrine tumors that arise from paraganglion cells of the parasympathetic nervous system. Paragangliomas arising from the midline skull base have only rarely been reported. Surgery is the mainstay of treatment and adjuvant radiation is often recommended. These tumors can rarely secrete metanephrines and normetanephrines which can complicate operative management. Here we present two cases of clival paragangliomas with unique clinical presentations and review the previous literature on skull base paragangliomas...
March 16, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28296347/gdnf-schwann-cells-in-hydrogel-scaffolds-promote-regional-axon-regeneration-remyelination-and-functional-improvement-after-spinal-cord-transection-in-rats
#19
Bingkun K Chen, Nicolas N Madigan, Jeffrey S Hakim, Mahrokh Dadsetan, Siobhan S McMahon, Michael J Yaszemski, Anthony J Windebank
Positively-charged oligo[poly(ethylene glycol)fumarate] (OPF(+) ) is a biodegradable hydrogel used for spinal cord injury repair. We compared scaffolds containing primary Schwann cells (SCs) to scaffolds delivering SCs genetically modified to secrete high concentrations of glial cell-derived neurotrophic factor (GDNF). Multichannel OPF(+) scaffolds loaded with SCs or GDNF-SCs were implanted into transected rat spinal cords for 4 weeks. GDNF-SCs promoted regeneration of more axons into OPF(+) scaffolds (2773...
March 10, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28296336/a-comprehensive-study-of-palate-development-in-miniature-pig
#20
Lindong Sun, Jiangyi Wang, Huina Liu, Zhipeng Fan, Songlin Wang, Juan Du
Palate development is an important morphogenetic event in facial development, including the fusion of the lateral and medial nasal portions of the frontonasal process and maxilla. Derailments of any of these events may result in cleft palate, the most frequent congenital craniofacial abnormality. Recent research has shown that the microanatomy of the miniature pig oral maxillofacial region is quite similar to that of humans, and the use of miniature pigs as a large animal model for dental and orofacial research is increasing...
March 15, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
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