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https://www.readbyqxmd.com/read/29448930/a-prediction-study-of-warfarin-individual-stable-dose-after-mechanical-heart-valve-replacement-adaptive-neural-fuzzy-inference-system-prediction
#1
Huan Tao, Qian Li, Qin Zhou, Jie Chen, Bo Fu, Jing Wang, Wenzhe Qin, Jianglong Hou, Jin Chen, Li Dong
BACKGROUND: It's difficult but urgent to achieve the individualized rational medication of the warfarin, we aim to predict the individualized warfarin stable dose though the artificial intelligent Adaptive neural-fuzzy inference system (ANFIS). METHODS: Our retrospective analysis based on a clinical database, involving 21,863 patients from 15 Chinese provinces who receive oral warfarin after the heart valve replacement. They were allocated into four groups: the external validation group (A group), the internal validation group (B group), training group (C group) and stratified training group (D group)...
February 15, 2018: BMC Surgery
https://www.readbyqxmd.com/read/29444694/reliability-and-construct-validity-of-the-ottawa-valve-collapse-scale-when-assessing-external-nasal-valve-collapse
#2
Hedyeh Ziai, James P Bonaparte
BACKGROUND: Nasal valve collapse is a common cause of nasal obstruction in otolaryngology practice. Common examination methods, such as the Cottle Maneuver and modified Cottle Maneuver are available. However, these methods are dichotomous and do not provide ordinal severity information. The Ottawa Valve Collapse Scale (OVCS) is a grading system for assessing and easily grading external nasal valve collapse in patients with a septal deviation. The primary objective was to assess the test-retest reliability and construct validity of the OVCS grading scale...
February 14, 2018: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/29441169/perioperative-stroke-pathophysiology-and-management
#3
REVIEW
Sang-Bae Ko
Although perioperative stroke is uncommon during low-risk non-vascular surgery, if it occurs, it can negatively impact recovery from the surgery and functional outcome. Based on the Society for Neuroscience in Anesthesiology and Critical Care Consensus Statement, perioperative stroke includes intraoperative stroke, as well as postoperative stroke developing within 30 days after surgery. Factors related to perioperative stroke include age, sex, a history of stroke or transient ischemic attack, cardiac surgery (aortic surgery, mitral valve surgery, or coronary artery bypass graft surgery), and neurosurgery (external carotid-internal carotid bypass surgery, carotid endarterectomy, or aneurysm clipping)...
February 2018: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29380022/nasal-alar-schwannoma-an-unusual-case-report
#4
Timothy C Blood, Thomas G Townes, Shaun C Desai
PURPOSE: To present the second known case of nasal alar schwannoma, first since 1973, with important considerations for surgical management. CASE REPORT: We present the case of a 25-year-old male with a 5-year history of progressively enlarging, non-tender, right alar mass with resultant ipsilateral nasal congestion and dyspnea secondary to nasal valve collapse. The mass was located cephalic to the mid-lateral aspect of the lower lateral crural cartilage, which extended to the pyriform aperture...
January 29, 2018: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/29372629/chest-tube-drainage-of-the-pleural-space-a-concise-review-for-pulmonologists
#5
REVIEW
José M Porcel
Chest tube insertion is a common procedure usually done for the purpose of draining accumulated air or fluid in the pleural cavity. Small-bore chest tubes (≤14F) are generally recommended as the first-line therapy for spontaneous pneumothorax in non-ventilated patients and pleural effusions in general, with the possible exception of hemothoraces and malignant effusions (for which an immediate pleurodesis is planned). Large-bore chest drains may be useful for very large air leaks, as well as post-ineffective trial with small-bore drains...
January 24, 2018: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/29349412/treatment-of-a-symptomatic-intrathoracic-internal-carotid-artery
#6
Christopher R Brown, Michael R Brown
Intrathoracic common carotid artery bifurcations are an anatomic anomaly with such rarity that only six cases have been reported to date. The true incidence of and preferred treatment options for a diseased intrathoracic common carotid artery bifurcation or internal carotid artery (ICA) have not been clearly described. This case report describes a 72-year-old man who experienced a postoperative right hemispheric stoke after an aortic valve replacement, radiofrequency maze procedure, and left atrial appendage clip...
September 2017: Journal of Vascular Surgery Cases and Innovative Techniques
https://www.readbyqxmd.com/read/29348010/early-outcomes-with-the-evolut-pro-repositionable-self-expanding-transcatheter-aortic-valve-with-pericardial-wrap
#7
John K Forrest, Abeel A Mangi, Jeffrey J Popma, Kamal Khabbaz, Michael J Reardon, Neal S Kleiman, Steven J Yakubov, Daniel Watson, Susheel Kodali, Isaac George, Peter Tadros, George L Zorn, John Brown, Robert Kipperman, Sara Saul, Hongyan Qiao, Jae K Oh, Mathew R Williams
OBJECTIVES: This study sought to evaluate the Medtronic Evolut PRO Transcatheter Aortic Valve System in patients with severe symptomatic aortic stenosis. BACKGROUND: A next-generation self-expanding transcatheter aortic valve was designed with an external pericardial wrap with the intent to reduce paravalvular leak while maintaining the benefits of a low-profile, self-expanding, and repositionable supra-annular valve. METHODS: The Medtronic Evolut PRO Clinical Study included 60 patients undergoing transcatheter aortic valve replacement with the Evolut PRO valve at 8 investigational sites in the United States...
January 22, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29343852/a-new-class-of-magnetically-actuated-pumps-and-valves-for-microfluidic-applications
#8
Joshua K Hamilton, Matthew T Bryan, Andrew D Gilbert, Feodor Y Ogrin, Thomas O Myers
We propose a new class of magnetically actuated pumps and valves that could be incorporated into microfluidic chips with no further external connections. The idea is to repurpose ferromagnetic low Reynolds number swimmers as devices capable of generating fluid flow, by restricting the swimmers' translational degrees of freedom. We experimentally investigate the flow structure generated by a pinned swimmer in different scenarios, such as unrestricted flow around it as well as flow generated in straight, cross-shaped, Y-shaped and circular channels...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29328973/feeding-inhibition-in-corbicula-fluminea-o-f-muller-1774-as-an-effect-criterion-to-pollutant-exposure-perspectives-for-ecotoxicity-screening-and-refinement-of-chemical-control
#9
Bruno Branco Castro, Carlos Silva, Inês Patrunilho Efe Macário, Bruno Oliveira, Fernando Gonçalves, Joana Luísa Pereira
Bivalves are commonly used in biomonitoring programs to track pollutants. Several features, including its filter-feeding abilities, cumulatively argue in favour of the use of the Asian clam (Corbicula fluminea) as a biosentinel and an ecotoxicological model. Filtration in bivalves is very sensitive to external stimuli and its control is dictated by regulation of the opening/closure of the valves, which may be used as an avoidance defence against contaminants. Here, we investigate the filter-feeding behaviour of the Asian clam as an endpoint for assessing exposure to pollutants, driven by two complementary goals: (i) to generate relevant and sensitive toxicological information based on the ability of C...
January 4, 2018: Aquatic Toxicology
https://www.readbyqxmd.com/read/29315371/computed-tomography-characteristics-of-the-aortic-valve-and-the-geometry-of-sapien-3-transcatheter-heart-valve-in-patients-with-bicuspid-aortic-valve-disease
#10
Hiroyuki Kawamori, Sung-Han Yoon, Tarun Chakravarty, Yoshio Maeno, Mohammad Kashif, Sharjeel Israr, Yigal Abramowitz, Geeteshwar Mangat, Masaki Miyasaka, Tanya Rami, Yoshio Kazuno, Nobuyuki Takahashi, Hasan Jilaihawi, Mamoo Nakamura, Wen Cheng, John Friedman, Daniel Berman, Rahul Sharma, Raj R Makkar
Aims: We assessed the geometry of transcatheter heart valve (THV) and valve function associated with SAPIEN 3 implantation in patients with bicuspid aortic valve (BAV) stenosis. Methods and results: We included 280 consecutive patients who had a contrast computed tomography (CT) before and after transcatheter aortic valve implantation (TAVI) in our institution. Each THV was assessed by CT at five cross-sectional levels: inflow, annulus, mid, sinus, and outflow. The geometry of THV was assessed for eccentricity (1 - minimum diameter/maximum diameter) and expansion (CT derived external valve area/nominal external valve area)...
January 5, 2018: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29310869/intraosseous-vascular-access-is-associated-with-lower-survival-and-neurologic-recovery-among-patients-with-out-of-hospital-cardiac-arrest
#11
Takahisa Kawano, Brian Grunau, Frank X Scheuermeyer, Koichiro Gibo, Christopher B Fordyce, Steve Lin, Robert Stenstrom, Robert Schlamp, Sandra Jenneson, Jim Christenson
STUDY OBJECTIVE: We seek to determine the effect of intraosseous over intravenous vascular access on outcomes after out-of-hospital cardiac arrest. METHODS: This secondary analysis of the Resuscitation Outcomes Consortium Prehospital Resuscitation Using an Impedance Valve and Early Versus Delayed (PRIMED) study included adult patients with nontraumatic out-of-hospital cardiac arrests treated during 2007 to 2009, excluding those with any unsuccessful attempt or more than one access site...
January 6, 2018: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/29282746/valve-morphogenesis-in-diploneis-smithii-bacillariophyta
#12
Masahiko Idei, Shinya Sato, Tamotsu Nagumo, David G Mann
Diploneis species have perhaps the most complex valve structure among pennate diatoms. The development of this structure was studied in D. smithii and begins with the formation of a primary band, which then develops secondary arms at both poles and the center, as in the classic Chiappino-Volcani model of raphid diatom ontogeny. Spine-like projections grow out from the primary band and secondary arms to establish the transapical ribs (virgae) of the mature valve and themselves develop spines, which are spaced first oppositely and then alternately and fuse with each other to delimit the stria pores...
December 28, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/29221734/aortic-annulus-does-not-dilate-over-time-after-aortic-root-remodeling-with-or-without-annuloplasty
#13
Takashi Kunihara, Satoshi Arimura, Fumihiro Sata, Christian Giebels, Ulrich Schneider, Hans-Joachim Schäfers
OBJECTIVE: The lack of annular stabilization is the drawback of aortic root remodeling, and recently the addition of annuloplasty has been proposed. Limited data, however, exist on late annular size after remodeling. We studied annular size over time. METHODS: In 241 patients (53 ± 16 years) annular size was determined preoperatively (T0), before discharge (T1), and at least 2 years after remodeling (T2, 54 ± 27 months) with (n = 52) or without external suture annuloplasty...
December 5, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29216839/rates-of-morphological-evolution-asymmetry-and-morphological-integration-of-shell-shape-in-scallops
#14
Emma Sherratt, Jeanne M Serb, Dean C Adams
BACKGROUND: Rates of morphological evolution vary across different taxonomic groups, and this has been proposed as one of the main drivers for the great diversity of organisms on Earth. Of the extrinsic factors pertaining to this variation, ecological hypotheses feature prominently in observed differences in phenotypic evolutionary rates across lineages. But complex organisms are inherently modular, comprising distinct body parts that can be differentially affected by external selective pressures...
December 8, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29184602/-giant-lithiasis-due-to-urinary-stasis-related-to-ileo-caecal-bladder
#15
Hamza Dergamoun, Zayd El Boukili El Makhoukhi
Bladder exstrophy is a malformation characterized by subumbilical anterior abdominal wall and anterior bladder wall deishence. It affects nearly 30.000-40.000 births per year, with a higher prevalence in boys. External continent urinary diversion creates a long-term outcome. However, it is not devoid of complications. We report the case of a 30-year old female patient who had undergone cystectomy with bladder replaced with ileo-caecal segment for bladder exstrophy 13 years earlier. She was followed up for 5 years and then lost to follow up...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/29162718/delay-between-actuation-and-shaking-of-a-hydrofluoroalkane-fluticasone-pressurized-metered-dose-inhaler
#16
Ariel Berlinski, Dirk von Hollen, John N Pritchard, Ross Hm Hatley
BACKGROUND: Inhaled corticosteroids are used to treat pediatric asthma. The shaking of a pressurized metered-dose inhaler (pMDI) is required to ensure consistency of emitted dose. Delays between shaking and actuating the pMDI are frequent during administration of aerosols to children where a valved holding chamber is used. METHODS: In a recent clinical trial, we used a monitoring device to record shaking and actuation of the pMDI and the inhalation profiles of children with asthma while they were inhaling fluticasone hydrofluoroalkane from a valved holding chamber onto an external filter...
November 21, 2017: Respiratory Care
https://www.readbyqxmd.com/read/29156355/biomechanical-evaluation-of-a-personalized-external-aortic-root-support-applied-in-the-ross-procedure
#17
Julie Vastmans, Heleen Fehervary, Peter Verbrugghe, Tom Verbelen, Emma Vanderveken, Jos Vander Sloten, Tom Treasure, Filip Rega, Nele Famaey
A commonly heard concern in the Ross procedure, where a diseased aortic valve is replaced by the patient's own pulmonary valve, is the possibility of pulmonary autograft dilatation. We performed a biomechanical investigation of the use of a personalized external aortic root support or exostent as a possibility for supporting the autograft. In ten sheep a short length of pulmonary artery was interposed in the descending aorta, serving as a simplified version of the Ross procedure. In seven of these cases, the autograft was supported by an external mesh or so-called exostent...
November 11, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29127116/predicting-mortality-after-transcatheter-aortic-valve-replacement-external-validation-of-the-transcatheter-valve-therapy-registry-model
#18
Thomas Pilgrim, Anna Franzone, Stefan Stortecky, Fabian Nietlispach, Alan G Haynes, David Tueller, Stefan Toggweiler, Oliver Muller, Enrico Ferrari, Stéphane Noble, Francesco Maisano, Raban Jeger, Marco Roffi, Jürg Grünenfelder, Christoph Huber, Peter Wenaweser, Stephan Windecker
BACKGROUND: The Transcatheter Valve Therapy (TVT) registry model was recently developed to predict the risk of in-hospital mortality in patients undergoing transcatheter aortic valve replacement. We sought to externally validate the model in an independent data set of consecutively enrolled patients in the Swiss Transcatheter Aortic Valve Implantation registry. METHODS AND RESULTS: The original prediction model was retrospectively applied to 3491 consecutive patients undergoing transcatheter aortic valve replacement in Switzerland between February 2011 and February 2016...
November 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29124391/implementing-a-digital-real-time-hydrocephalus-and-shunt-registry-to-evaluate-contemporary-pattern-of-care-and-surgical-outcome-in-pediatric-hydrocephalus
#19
Hans Christoph Bock, Maximilian Kanzler, Ulrich-Wilhelm Thomale, Hans Christoph Ludwig
OBJECTIVE: Treatment monitoring and outcome evaluation in pediatric hydrocephalus require gapless documentation regarding surgical and clinical follow-up data beginning from day 1 of treatment in order to apply high quality of care. Endoscopic procedures, shunt insertion and revision surgeries, and individual modifications of valve hardware or pressure settings during follow-up as well as established outcome measurements are highly relevant for complete illustration of the patient's hydrocephalus histories...
November 9, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29121572/simultaneous-determination-of-rutin-and-ascorbic-acid-in-a-sequential-injection-lab-at-valve-system
#20
Mohammed Khair E A Al-Shwaiyat, Yuliia V Miekh, Tatyana A Denisenko, Andriy B Vishnikin, Vasil Andruch, Yaroslav R Bazel
A green, simple, accurate and highly sensitive sequential injection lab-at-valve procedure has been developed for the simultaneous determination of ascorbic acid (Asc) and rutin using 18-molybdo-2-phosphate Wells-Dawson heteropoly anion (18-MPA). The method is based on the dependence of the reaction rate between 18-MPA and reducing agents on the solution pH. Only Asc is capable of interacting with 18-MPA at pH 4.7, while at pH 7.4 the reaction with both Asc and rutin proceeds simultaneously. In order to improve the precision and sensitivity of the analysis, to minimize reagent consumption and to remove the Schlieren effect, the manifold for the sequential injection analysis was supplemented with external reaction chamber, and the reaction mixture was segmented...
November 6, 2017: Journal of Pharmaceutical and Biomedical Analysis
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