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https://www.readbyqxmd.com/read/29223114/regional-conduction-velocity-calculation-from-clinical-multichannel-electrograms-in-human-atria
#1
Bhawna Verma, Tobias Oesterlein, Axel Loewe, Armin Luik, Claus Schmitt, Olaf Dössel
BACKGROUND: During atrial fibrillation, heterogeneities and anisotropies result in a chaotic propagation of the depolarization wavefront. The electrophysiological parameter called conduction velocity (CV) influences the propagation pattern over the atrium. We present a method that determines the regional CV for deformed catheter shapes, which result due to the catheter movement and changing wall contact. METHODS: The algorithm selects stable catheter positions, finds the local activation times (LAT), considers the wall contact and calculates all CV estimates within the area covered by the catheter...
November 26, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29221746/clinical-and-neuroimaging-characteristics-of-cerebral-sinovenous-thrombosis-in-neonates-undergoing-cardiac-surgery
#2
Nathalie H P Claessens, Selma O Algra, Nicolaas J G Jansen, Floris Groenendaal, Esther de Wit, Alexander A Wilbrink, Felix Haas, Antonius N J Schouten, Rutger A J Nievelstein, Manon J N L Benders, Linda S de Vries
OBJECTIVES: Neonates with congenital heart disease may have an increased risk of cerebral sinovenous thrombosis, but incidence rates are lacking. This study describes the clinical and neuroimaging characteristics of cerebral sinovenous thrombosis in neonates undergoing cardiac surgery. METHODS: Forty neonates (78% male) requiring neonatal univentricular or biventricular cardiac repair using cardiopulmonary bypass were included. All underwent preoperative (median postnatal day 7) and postoperative (median postoperative day 7) magnetic resonance imaging of the brain, including venography, to detect cerebral sinovenous thrombosis...
November 8, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29221440/effect-of-flecainide-on-atrial-fibrillatory-rate-in-a-large-animal-model-with-induced-atrial-fibrillation
#3
Eva Z Hesselkilde, Helena Carstensen, Maria M Haugaard, Jonas Carlson, Steen Pehrson, Thomas Jespersen, Rikke Buhl, Pyotr G Platonov
BACKGROUND: Atrial fibrillatory cycle length has been considered one of the indices of atrial electrical remodelling during atrial fibrillation (AF), which can be assessed from surface ECG by computer-assisted calculation of atrial fibrillatory rate (AFR). Horses have been suggested as a bona fide model for AF studies since horses too, develop lone AF, however data on AF characteristics in horses are extremely sparse and non-invasive characterization of AF complexity using surface ECG processing has not been reported...
December 8, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29221351/extracorporeal-membrane-oxygenation-system-as-a-bridge-to-reparative-surgery-in-ventricular-septal-defect-complicating-acute-inferoposterior-myocardial-infarction
#4
Jose Rozado, Isaac Pascual, Pablo Avanzas, Daniel Hernandez-Vaquero, Ruben Alvarez, Rocio Díaz, Beatriz Díaz, María Martín, Amelia Carro, Guillermo Muñiz, Jacobo Silva, Cesar Moris
Post-infarction ventricular septal defect (VSD) is a rare but potentially lethal complication of acute myocardial infarction. Medical management is usually futile, so definitive surgery remains the treatment of choice but the risk surgery is very high and the optimal timing for surgery is still under debate. A 55-year-old man with no previous medical history attended the emergency-room for 12 h evolution of oppressive chest pain and strong anginal pain 7 days ago. On physical examination, blood pressure was 96/70 mmHg, pansystolic murmur over left sternal border without pulmonary crackles...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29221290/should-sinus-of-valsalva-be-preserved-in-patients-with-bicuspid-aortic-valve-and-aortic-dilation
#5
Yulin Wang, Yi Lin, Kanhua Yin, Kai Zhu, Zhaohua Yang, Yongxin Sun, Hao Lai, Chunsheng Wang
Background: It is recommended that dilated ascending aortas (≥45 mm) should be replaced at the time of aortic valve replacement (AVR) for bicuspid aortic valve (BAV). The risk of progressive sinus of Valsalva dilatation after AVR and ascending aorta replacement is less clear. Methods: We identified 156 patients (age 56.2±10.8 years, 46 females) who underwent AVR and ascending aorta replacement in our institution from 2010-2014, 124 (79%) of whom had BAV. Aortic root and ascending aorta sizes were determined from preoperative and the most recent echocardiograms...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29221283/effectiveness-and-safety-of-simultaneous-hybrid-thoracoscopic-endocardial-catheter-ablation-of-atrial-fibrillation-in-obese-and-non-obese-patients
#6
Kevin Phan, Laurent Pison, Nelson Wang, Aran Kanagaratnam, Tristan D Yan, Bart Maesen, Jos G Maessen, Harry J Crijns, Mark La Meir
Background: We evaluated the safety and effectiveness of the hybrid thoracoscopic endocardial epicardial ablation technique for the treatment of atrial fibrillation (AF) in obese versus non-obese patients. Methods: Between January 2010 and January 2015, a cohort of 61 patients were retrospectively identified to undergo ablation of AF as a stand-alone procedure using a thoracoscopic, hybrid epicardial-endocardial technique. All patients underwent continuous 7-day Holter monitoring at 3, 6 months, 1 year and yearly thereafter...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29220756/the-impact-of-sustained-new-onset-atrial-fibrillation-on-mortality-and-stroke-incidence-in-critically-ill-patients-a-retrospective-cohort-study
#7
Takuo Yoshida, Shigehiko Uchino, Taisuke Yokota, Tomoko Fujii, Shoichi Uezono, Masanori Takinami
PURPOSE: The purpose of the study is to evaluate the impact of sustained new-onset AF on mortality and the incidence of stroke in critically ill non-cardiac surgery patients. MATERIAL AND METHODS: This was a retrospective cohort study of non-cardiac surgery patients with new-onset AF conducted in a general intensive care unit. We compared patients remaining in AF with those restored to sinus rhythm (SR) at 6h after the onset of AF and conducted multivariable logistic regression analysis for in-hospital mortality...
December 1, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/29220401/contour-recognition-of-complex-leaf-shapes
#8
Giacomo Diaz
The leaf shape is an important taxonomic character. Compared to the classic morphological leaf features such as veins, margin indentations, sinuses, etc., the shape is simpler to obtain by using the 'magic wand' or other contouring tools that are available in most of imaging applications. The only exception is when leaves develop large lobes that get in touch or overlap each other, as the presence of hidden or closed portions of the leaf border precludes the application of automatic methods and forces the leaf contour to be traced manually...
2017: PloS One
https://www.readbyqxmd.com/read/29219959/primary-orbital-ewing-sarcoma-family-of-tumors-a-study-of-12-cases
#9
S Kaliki, S G Rathi, V A R Palkonda
PurposeThe purpose of this study is to discuss the clinical presentation, management, and outcomes of patients with primary orbital Ewing sarcoma family of tumors (ESFTs).Patients and methodsRetrospective study of 12 patients with biopsy-proven primary orbital ESFT.ResultsThe mean age at presentation of primary orbital ESFT was 12 years (median, 8 years; range, 5 months to 28 years). There were seven (58%) females and five (42%) males. The presenting complaints included proptosis (n=10; 83%) and swelling in the upper eyelid (n=2; 17%)...
December 8, 2017: Eye
https://www.readbyqxmd.com/read/29219752/negative-surgical-exploration-in-patients-with-cushing-s-disease-benefit-of-two-thirds-gland-resection-on-remission-rate-and-a-review-of-the-literature
#10
Steven B Carr, Bette K Kleinschmidt-DeMasters, Janice M Kerr, Katja Kiseljak-Vassiliades, Margaret E Wierman, Kevin O Lillehei
OBJECTIVE The authors report their single-institution experience with the pathological findings, rates of remission, and complications in patients with presumed Cushing's disease (CD) who underwent a two-thirds pituitary gland resection when no adenoma was identified at the time of transsphenoidal surgery (TSS). The authors also review the literature on patients with CD, negative surgical exploration, and histological findings. METHODS This study is a retrospective analysis of cases found in neurosurgery and pathology department databases between 1989 and 2011...
December 8, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29219746/development-of-two-surgical-approaches-to-the-pituitary-gland-in-the-horse
#11
James L Carmalt, Brian A Scansen
BACKGROUND: Current treatment of equine PPID requires daily oral medication, which is expensive and difficult from a management perspective. A minimally invasive surgical palliation of this chronic condition is appealing because it is envisioned to be a single treatment which, while not curative, will alleviate the clinical signs of disease dramatically thereby improving the welfare of the horse. OBJECTIVE: To develop a surgical approach to the equine pituitary gland, for subsequent treatment of pituitary pars intermedia dysfunction...
December 8, 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/29218260/a-case-of-streptococcus-anginosus-brain-abscess-caused-by-contiguous-spread-from-sinusitis-in-an-immunocompetent-patient
#12
Nathan Esplin, John W Stelzer, Sean All, Sundeep Kumar, Ejaz Ghaffar, Sayed Ali
Brain abscesses are infections of the brain parenchyma that can arise from either contiguous spread from local infection or by hematogenous spread from a distant site. Streptococcus anginosus of the Streptococcus anginosus group (SAG) is a commensal microbe of the mucosae of the oral cavity, gastrointestinal tract, and urogenital tract. We present a case of mono-microbial brain abscess caused by contiguous spread from relatively asymptomatic sinusitis that initially presented as a subdural hemorrhage on computed tomography...
October 4, 2017: Curēus
https://www.readbyqxmd.com/read/29218256/intracranial-anatomical-triangles-a-comprehensive-illustrated-review
#13
REVIEW
Doniel Drazin, Joy Mh Wang, Fernando Alonso, Daxa M Patel, Andre Granger, Mohammadali M Shoja, Marios Loukas, Rod J Oskouian, R Shane Tubbs
There are multiple anatomical triangles of the skull base. However, to our knowledge, there has been no comprehensive review of these geometric landmarks. To allow for a safe and consistent approach to lesions of the skull base such as those near the internal carotid artery, internal acoustic meatus, and cavernous sinus, a comprehensive review of the variations with illustrations is required. This article provides an overview of the anatomical borders, dimensions, and surgical implications as well as illustrations of the major skull base triangles...
October 4, 2017: Curēus
https://www.readbyqxmd.com/read/29218229/the-role-of-arthroereisis-of-the-subtalar-joint-for-flatfoot-in-children-and-adults
#14
REVIEW
Alessio Bernasconi, François Lintz, Francesco Sadile
Subtalar arthroereisis has been reported as a minimally-invasive, effective and low-risk procedure in the treatment of flatfoot mainly in children but also in adults.It has been described as a standalone or adjunctive procedure, and is indicated in the treatment of flexible flatfoot, tibialis posterior tendon dysfunction, tarsal coalition and accessory navicular syndrome.Different devices for subtalar arthroereisis are currently used throughout the world associated with soft-tissue and bone procedures, depending on the surgeon rather than on standardised or validated protocols...
November 2017: EFORT Open Reviews
https://www.readbyqxmd.com/read/29217897/long-lasting-dysphagia-developing-after-thoracotomy-for-pulmonary-resection-a-case-series
#15
Ikuno Ito, Kohei Hamada, Hiroyuki Sato, Naoko Shindo
The purpose of this study was to retrospectively evaluate the severity and the characteristics of dysphagia using videofluoroscopic swallowing studies (VFSS) in long-lasting dysphagia patients developing after thoracotomy performed for pulmonary resection. Eleven patients (10 men and 1 woman, average age 67 ± 6.6 years; the average operation time in the patients was 507 min) were selected from among patients who developed dysphagia after undergoing thoracotomy for pulmonary resection between January 2009 and December 2012...
December 2017: Indian Journal of Surgery
https://www.readbyqxmd.com/read/29217500/peripheral-neuropathy-as-a-complication-of-diabetic-ketoacidosis-in-a-child-with-newly-diagnosed-diabetes-type-1-case-report
#16
Marta Baszyńska-Wilk, Marta Wysocka-Mincewicz, Anna Świercz, Jolanta Świderska, Magdalena Marszał, Mieczysław Szalecki
BACKGROUND: Neurological complications of diabetic ketoacidosis are considered to be very serious clinical problem. The most common complication is cerebral edema. However this group includes also less common syndromes such as ischemic or hemorrhagic stroke, cerebral venous and sinus thrombosis or very rare peripheral neuropathy. CASE REPORT: We present a case of 9-year old girl with new onset type 1 diabetes, diabetic ketoacidosis, cerebral edema, multifocal vasogenic brain lesions and lower limbs peripheral paresis...
December 8, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/29217425/usp6-gene-rearrangement-differentiate-primary-paranasal-sinus-solid-aneurysmal-bone-cyst-from-other-giant-cell-rich-lesions-report-of-a-rare-case
#17
Hung-Ru Li, Chih-Feng Tai, Hsuan-Ying Huang, Ying-Tai Jin, Yi-Ting Chen, Sheau-Feng Yang
Aneurysmal bone cysts (ABCs) mostly occur in the metaphysis of long bones. Primary paranasal ABCs are extremely rare and most reported cases reveal typical histopathological features including cystic space with fibrous septa and hemorrhage. Solid variant ABCs or solid ABCs lacking cyst formation may be histologically indistinguishable from giant cell reparative granulomas (GCRGs), giant cell tumor of bone (GCTB), and brown tumor. Here we report the case of a 24-year-old female with a paranasal mass diagnosed as USP6-rearranged solid ABC, mimicking GCRG, GCTB and brown tumor...
December 4, 2017: Human Pathology
https://www.readbyqxmd.com/read/29217319/long-term-analysis-of-surgical-treatment-outcomes-in-chronic-pilonidal-sinus-disease
#18
Huseyin Murat Mutus, Burhan Aksu, Ersan Uzun, Neslihan Gulcin, Gonca Gercel, Erdem Ozatman, Cigdem Ulukaya Durakbasa, Hamit Okur
BACKGROUND/PURPOSE: Chronic pilonidal sinus disease (PSD) is relatively common in adolescents and can be treated by various surgical techniques. This study aimed to evaluate the outcome in adolescents surgically treated for PSD in a single clinic. METHODS: PSD patients surgically treated over an 8-year period were retrospectively evaluated. Classical midline incision and excision with primary repair was performed in all. Regular follow up visits were scheduled. Evaluation of postoperative outpatient clinic records as well as telephone interviews for patients who were operated more than 6months ago were done for the long-term results, including coherence to regional hair care...
November 14, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29217241/myocardial-protection-in-mitral-valve-surgery-comparison-between-minimally-invasive-approach-and-standard-sternotomy
#19
Jean-Sébastien Lebon, Pierre Couture, Annik Fortier, Antoine G Rochon, Christian Ayoub, Claudia Viens, Éric Laliberté, Denis Bouchard, Michel Pellerin, Alain Deschamps
OBJECTIVE: To compare antegrade and retrograde cardioplegia administration in minimally invasive mitral valve surgery (MIMS) and open mitral valve surgery (OMS) for myocardial protection. DESIGN: Retrospective study. SETTING: Tertiary care university hospital. PARTICIPANTS: The study comprised 118 patients undergoing MIMS and 118 patients undergoing OMS. INTERVENTIONS: The data of patients admitted for MIMS from 2006 to 2010 were reviewed...
August 30, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29216818/neuroprotective-effects-of-amiodarone-in-a-mouse-model-of-ischemic-stroke
#20
Masakazu Kotoda, Tadahiko Ishiyama, Kazuha Mitsui, Sohei Hishiyama, Takashi Matsukawa
BACKGROUND: Ion channels play a crucial role in the development of ischemic brain injury. Recent studies have reported that the blockade of various types of ion channels improves outcomes in experimental stroke models. Amiodarone, one of the most effective drugs for life-threatening arrhythmia, works as a multiple channel blocker and its characteristics cover all four Vaughan-Williams classes. Although it is known that amiodarone indirectly contributes to preventing ischemic stroke by maintaining sinus rhythm in patients with atrial fibrillation, the direct neuroprotective effect of amiodarone has not been clarified...
December 8, 2017: BMC Anesthesiology
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