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https://www.readbyqxmd.com/read/28089344/heparan-sulfate-storage-in-the-cardiac-conduction-system-triggers-atrioventricular-block
#1
Rie Kato, Hiroaki Miyahara, Tatsuya Kawano, Atsuko Matsuzuka, Kimiko Noda, Tatsuro Izumi
OBJECTIVE: To elucidate the novel biological functions of heparan sulfate (HS) by clinic-pathologically studying a patient with paroxysmal atrioventricular (AV) block. PATIENT: A long-surviving male patient with Sanfilippo syndrome type A presented with paroxysmal AV block at age 33years. He then survived another 2.5years after the onset of paroxysmal AV block and pacemaker implantation. METHODS AND RESULTS: His cardiac histopathological examination at autopsy showed HS storage in the cardiac conduction system (CCS), especially in the atrioventricular node (AVN)-His bundle branches...
January 12, 2017: Brain & Development
https://www.readbyqxmd.com/read/28088306/ventricular-fibrillation-occurring-after-atrioventricular-node-ablation-despite-minimal-difference-between-pre-and-post-ablation-heart-rates
#2
F Squara, G Theodore, D Scarlatti, E Ferrari
We report the case of an 82-year-old man presenting with ventricular fibrillation (VF) occurring acutely after atrioventricular node (AVN) ablation. This patient had severe valvular cardiomyopathy, chronic atrial fibrillation (AF), and underwent prior to the AVN ablation a biventricular implantable cardiac defibrillator positioning. The VF was successfully cardioverted with one external electrical shock. What makes this presentation original is that the pre-ablation spontaneous heart rate in AF was slow (84 bpm), and that VF occurred after ablation despite a minimal heart rate drop of only 14 bpm...
January 11, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/28072704/sudden-death-due-to-the-atrioventricular-node-contusion-three-cases-report
#3
Wenhe Li, Lin Zhang, Yue Liang, Fang Tong, Yiwu Zhou
INTRODUCTION: Atrioventricular node (AVN) contusion usually results in cardiogenic shock and arrhythmia and is a rare but fatal condition. The condition is difficult to diagnose and easily overlooked because it develops rapidly and is asymptomatic. We here report 3 cases that demonstrate blunt chest impact and hemorrhages of the posterior atrioventricular junction, eventually result in death. CLINICAL FINDINGS: Autopsy and histological examination were performed on all cases...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28063677/the-results-of-tension-band-rotator-cuff-suture-fixation-of-locked-plating-of-displaced-proximal-humerus-fractures
#4
Dave R Shukla, Steven McAnany, Christian Pean, Samuel Overley, Andrew Lovy, Bradford O Parsons
INTRODUCTION: The purpose of this study was to assess 1-year outcomes of patients with displaced proximal humerus fractures who underwent treatment with locked plate fixation with rotator cuff suture augmentation. METHODS: A total of 86 patients who had sustained 2, 3 and 4-part displaced proximal humerus fractures underwent locked plate fixation with multiple sutures placed in the cuff tendons. Clinical outcome variables included active forward elevation (AFE), active external rotation (AER), and Constant and American Shoulder and Elbow Surgeons (ASES) scores...
December 29, 2016: Injury
https://www.readbyqxmd.com/read/28033218/avascular-necrosis-of-the-hips-with-increased-activity-on-68ga-dotatate-pet-ct
#5
Georgios Z Papadakis, Corina Millo, Apostolos H Karantanas, Ulas Bagci, Nicholas J Patronas
Prolonged exposure to cortisol is one of the major causes of avascular bone necrosis (AVN). We report on a case of a woman with Cushing syndrome attributed to ectopic adrenocorticotropic hormone-secreting tumor who was evaluated with whole-body PET/CT study using Ga-DOTATATE. The scan showed increased activity by both femoral heads, corresponding to the margins of bilateral AVN seen on MRI. The presented data suggests AVN-induced reactive inflammatory alterations adjacent to the necrotic segment of the bone, which can be effectively targeted using radiolabeled somatostatin (SST) analogs...
December 28, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28032928/integrity-of-the-ganglionated-plexi-is-essential-to-parasympathetic-innervation-of-the-atrioventricular-node-by-the-right-vagus-nervez
#6
Olivier Xhaet, Luc DE Roy, Mariana Floria, Olivier Deceuninck, Dominique Blommaert, Fabien Dormal, Elisabeth Ballant, Mark LA Meir
INTRODUCTION: Radiofrequency isolation of pulmonary vein can be accompanied by transient sinus bradycardia or atrioventricular nodal (AVN) block, suggesting an influence on vagal cardiac innervation. However, the importance of the atrial fat pads in relation with the vagal innervation of AVN in humans remains largely unknown. This article is protected by copyright. All rights reserved The aim of this study was to evaluate the role of ganglionated plexi (GP) in the innervation of the AVN by the right vagus nerve...
December 29, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28018062/non-union-fracture-neck-femur-in-a-toddler-reconstructed-by-valgus-osteotomy-a-minimally-invasive-approach
#7
Amit Sharma, Anurag Tiwari, Tarun Verma, Lalit Maini
BACKGROUND: Non-union is one of the devastating complications of fracture neck of femur. Though a very rarely encountered entity in a toddler (1-3 years paediatric age group), non-united femoral neck fractures are reported in developing countries because of mismanagement by quacks and delay in referrals. For operative treatment, many different procedures have been described, including close/open reduction and internal fixation using K-wires, cannulated screws, fibula or nails. There is no evidence in the literature that one or other implant influences the rate of postoperative complications, such as avascular femoral head necrosis or coxa vara...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/27986394/increased-risk-of-avascular-necrosis-in-patients-with-psoriatic-disease-a-nationwide-population-based-matched-cohort-study
#8
Hsien-Yi Chiu, I-Ting Wang, Weng-Foung Huang, Yi-Wen Tsai, Ming-Neng Shiu, Tsen-Fang Tsai
BACKGROUND: Avascular necrosis (AVN) and psoriasis have some pathogenic mechanisms and associated conditions in common. OBJECTIVE: To examine the association between psoriasis and AVN. METHODS: This study used data from the Taiwan National Health Insurance Research Database for the period 2004-2006 and identified 28,268 patients with psoriasis, who were then matched for age and sex with 113,072 controls without psoriasis from the Taiwan Longitudinal Health Insurance Database 2000...
December 13, 2016: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/27958616/the-effect-of-atrial-pacing-site-on-electrophysiological-properties-of-the-atrioventricular-junction-and-induction-of-atrioventricular-nodal-reentry-in-patients-with-typical-atrioventricular-nodal-reentrant-tachycardia
#9
Radosław Marek Kiedrowicz, Jarosław Kaźmierczak, Maciej Wielusiński
BACKGROUND: Clinical studies in humans have shown the site of atrial stimulation to influence atrioventricular (AV) conduction times and refractory periods, the demonstration of dual atrioventricular nodal (AVN) pathways and induction of AVN reentry. These studies often found conflicting results. Moreover among enrolled patients the minority of them were found to have atrioventricular nodal reentrant tachycardia (AVNRT). The purpose of this study was to investigate the effect of the right and left atrial pacing on electrophysiological properties of the AV junction in the typical AVNRT population...
December 13, 2016: Kardiologia Polska
https://www.readbyqxmd.com/read/27923216/efficacy-of-a-cellular-bone-allograft-for-foot-and-ankle-arthrodesis-and-revision-nonunion-procedures
#10
Travis J Dekker, Peter White, Samuel B Adams
BACKGROUND: Bone graft substitutes are often required in patients at risk for nonunion, and therefore, an allograft that most closely mimics an autograft is highly sought after. This study explored the utility and efficacy of a cellular bone allograft used for foot and ankle arthrodesis and revision nonunion procedures in a patient population at risk for nonunion. METHODS: An institutional review board-approved retrospective review of consecutive patients who underwent arthrodesis and revision nonunion procedures with a cellular bone allograft was performed at a single academic institution...
October 23, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27904228/neglected-isolated-scaphoid-dislocation
#11
Jong-Ryoon Baek, Seung Hyun Cho, Yong Seuk Lee, Young Hak Roh
The authors present a case of isolated scaphoid dislocation in a 40-year-old male that was undiagnosed for 2 months. The patient was treated by open reduction, Kirschner wire fixation, interosseous ligament repair using a suture anchor and Blatt's dorsal capsulodesis. At 6 years followup, his radiographs of wrist showed a normal carpal alignment with a scapholunate gap of 3 mm and no evidence of avascular necrosis (AVN) of the scaphoid.
November 2016: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/27866913/minimally-invasive-plate-osteosynthesis-with-philos-plate-for-proximal-humerus-fractures
#12
Uğur Gönç, Mesut Atabek, Kürşat Teker, Altuğ Tanrıöver
OBJECTIVES: The aim of the present study was to evaluate results, including clinical and radiological outcomes and number of complications, following minimally invasive plate osteosynthesis (MIPO) of proximal humerus fractures, using the PHILOS® proximal humerus internal locking system (Synthes Holding AG, Solothurn, Switzerland). METHODS: Retrospectively evaluated were 31 patients treated with MIPO (12 male, 19 female; average age: 58.4 years). Four patients had 2-part fractures, 14 patients had 3-part fractures, and 13 patients had 4-part fractures, according to Neer classification...
November 18, 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27847717/effectiveness-of-lower-energy-density-extracorporeal-shock-wave-therapy-in-the-early-stage-of-avascular-necrosis-of-the-femoral-head
#13
Yong Han, June-Kyung Lee, Bong-Yeon Lee, Hoi-Sung Kee, Kwang-Ik Jung, Seo-Ra Yoon
OBJECTIVE: To evaluate the effectiveness of lower energy flux density (EFD) extracorporeal shock wave therapy (ESWT) in the early stage of avascular necrosis (AVN) of the femoral head. METHODS: Nineteen patients and 30 hips were enrolled. All subjects received 4 weekly sessions of ESWT, at different energy levels; group A (n=15; 1,000 shocks/session, EFD per shock 0.12 mJ/mm(2)) and group B (n=15; 1,000 shocks/session, EFD per shock 0.32 mJ/mm(2)). We measured pain by using the visual analog scale (VAS), and disability by using the Harris hip score, Hip dysfunction and Osteoarthritis Outcome Score (HOOS), and the Western Ontario and McMaster University Osteoarthritis Index (WOMAC)...
October 2016: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/27846045/closed-reduction-for-developmental-dysplasia-of-the-hip-early-term-results-from-a-prospective-multicenter-cohort
#14
Wudbhav N Sankar, Alex L Gornitzky, Nicholas M P Clarke, José A Herrera-Soto, Simon P Kelley, Travis Matheney, Kishore Mulpuri, Emily K Schaeffer, Vidyadhar V Upasani, Nicole Williams, Charles T Price
BACKGROUND: Closed reduction (CR) is a common treatment for infantile developmental dysplasia of the hip. The purpose of this observational, prospective, multicenter study was to determine the early outcomes following CR. METHODS: Prospectively collected data from an international multicenter study group was analyzed for patients treated from 2010 to 2014. Baseline demographics, clinical exam, radiographic/ultrasonographic data, and history of previous orthotic treatment were assessed...
November 11, 2016: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/27834459/histological-changes-of-the-acetabular-labrum-in-coxarthrosis-labral-degeneration-and-repair
#15
Marcin E Domzalski, Marek Synder, Anna Karauda, Wielislaw Papierz
INTRODUCTION: The current study was designed to describe types of histological changes within the acetabular labrum in the advanced stages of coxarthrosis, in patients requiring total hip arthroplasty (THA). METHODS: 77 consecutive patients without systemic disorders or prior hip surgery, scheduled for THA with 3 types of coxarthrosis: avascular necrosis (AVN), idiopathic, and dysplastic coxarthrosis were analysed. Patient's data: age, gender, side of the involvement, duration of the symptoms were recorded, and standard anteroposterior (AP) radiographic views of the pelvis were obtained...
November 9, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27831540/time-trend-and-risk-factors-of-avascular-bone-necrosis-in-patients-with-systemic-lupus-erythematosus
#16
Sau Mei Tse, Chi Chiu Mok
OBJECTIVES: The objective of this paper is to study the time trend and risk factors of avascular bone necrosis (AVN) in patients with systemic lupus erythematosus (SLE). METHODS: Between 1999 and 2014, patients who fulfilled the ACR criteria for SLE and developed symptomatic AVN were identified from our cohort database and compared with those without AVN, matched for age, sex and SLE duration. The standardized incidence ratios (SIRs) of AVN in different SLE age groups were calculated from data derived from our hospital registry and population census...
November 9, 2016: Lupus
https://www.readbyqxmd.com/read/27829340/avn-322-is-a-safe-orally-bio-available-potent-and-highly-selective-antagonist-of-5-ht6r-with-demonstrated-ability-to-improve-impaired-memory-in-animal-models
#17
Alexandre V Ivachtchenko, Yan A Ivanenkov, Mark S Veselov, I M Ikun
Alla Chem LLC, Hallandale Beach, USA; bAvineuro Pharmaceuticals, Inc., Hallandale Beach, USA; cMoscow Institute of Physics and Technology (State University), Dolgoprudny city, Russian Federation. Abstract: In recent years, 5-hydroxytryptamine subtype 6 receptor (5-HT6 receptor, 5-HT6R) has rapidly emerged as a promising therapeutic target for the treatment of neuropathological disorders, including Alzheimer's disease (AD). Evidence indicates that 5-HT6 receptors are deeply implicated in the processes of learning and memory, while 5-HT6R antagonists were shown to improve cognition in animal models of cognitive impairment...
7, 2016: Current Alzheimer Research
https://www.readbyqxmd.com/read/27818186/fixation-of-4-part-fractures-of-the-proximal-humerus-can-we-identify-radiological-criteria-that-support-locking-plates-or-im-nailing-comparative-retrospective-study-of-107-cases
#18
F Gadea, L Favard, P Boileau, C Cuny, T d'Ollone, D Saragaglia, F Sirveaux
INTRODUCTION: No objective criteria exist to help surgeons choose between IM nailing and plate fixation for 4-part fractures of the proximal humerus. The goal of this study was to identify radiological criteria that would make one technique a better choice than the other. MATERIAL AND METHODS: This was a comparative, multicentre, retrospective study of 54 cases of antegrade nailing and 53 cases of plating performed between 1st January 2009 and 31 December 2011 for 4-part fractures of the proximal humerus...
December 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27812914/avascular-necrosis-following-closed-reduction-for-treatment-of-developmental-dysplasia-of-the-hip-a-systematic-review
#19
Catharine S Bradley, Daniel C Perry, John H Wedge, M L Murnaghan, Simon P Kelley
BACKGROUND: Avascular necrosis (AVN) is a significant and potentially devastating complication following the treatment of developmental dysplasia of the hip (DDH). The reported rate of AVN following closed reduction for DDH ranges from 4 to 60%, and the resultant influence on hip development remains unclear. PURPOSE: A systematic review of the literature was undertaken to evaluate the frequency of AVN after more than 5 years of follow-up in children that underwent closed reduction at younger than 2-years of age for DDH...
December 2016: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/27793326/risk-factors-of-avascular-necrosis-of-the-femoral-head-and-fixation-failure-in-patients-with-valgus-angulated-femoral-neck-fractures-over-the-age-of-50-years
#20
Hyung Keun Song, Ho June Choi, Kyu Hyun Yang
INTRODUCTION: The aim of our study was to identify the risk factors for avascular necrosis of the femoral head (AVN) and fixation failure (FF) after screw osteosynthesis in patients with valgus angulated femoral neck fractures. PATIENTS AND METHODS: We conducted a retrospective study of 308 patients (mean age, 72.5 years, range, 50-97 years), with a mean follow-up of 21.4 months (range, 12-64 months). The risk for failure in treatment (FIT) associated with patient- and fracture-related factors was evaluated by logistic regression analyses...
December 2016: Injury
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