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https://www.readbyqxmd.com/read/28637595/a-one-year-mortality-clinical-prediction-rule-for-patients-with-heart-failure
#1
Antonio Escobar, Lidia García-Pérez, Gemma Navarro, Amaia Bilbao, Raul Quiros
AIMS: To create and validate a clinical prediction rule which is easy to manage, reproducible and that allows classifying patients admitted for heart failure according to their one-year mortality risk. METHODS: A prospective cohort study carried out with 2565 consecutive patients admitted with heart failure in 13 hospitals in Spain. The derivation cohort was made up of 1283 patients and 1282 formed the validation cohort. In the derivation cohort, we carried out a multivariate logistic model to predict one-year mortality...
June 18, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28633398/a-novel-system-for-the-treatment-of-aortic-annular-dilation-an-ex-vivo-investigation
#2
Pallav Shah, Claudia Romagnoni, Michal Jaworek, Federico Lucherini, Monica Contino, Alan Menkis, Guido Gelpi, Gianfranco B Fiore, Carlo Antona, Riccardo Vismara
OBJECTIVES: The main reason for aortic repair failures is recurrent annular dilatation. The fibrous portion of left ventricular outflow tract dilates. A novel device was designed to tackle this problem. METHODS: The device consists of an internal ring applied at the aortic annulus plus an external flexible band at the level of the aortic root. The internal ring has a semi-rigid portion (40%, placed at ventriculo-arterial junction) and a flexible portion to allow it to conform along the curves of the non-coronary/right coronary leaflet and right coronary/left coronary leaflet commissures...
June 15, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28616345/wrapping-of-the-ascending-aorta-revisited-is-there-any-role-left-for-conservative-treatment-of-ascending-aortic-aneurysm
#3
REVIEW
José María González-Santos, María Elena Arnáiz-García
Dilatation of the ascending aorta (AA) is a common finding in patients with aortic valve disease. The clinical practice guidelines recommend replacing the AA whenever the diameter exceeds 45 mm. However, no consensus has been reached regarding the approach when the aorta is only moderately dilated. Although the risk in aorta replacement is generally low, it may be higher when associated with other complex surgical procedures or it is carried out in elderly patients or patients with significant comorbidity. This would justify the use of alternative surgical techniques, which reduce surgical risk and guarantee a durable correction of the aortic pathology...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28610543/does-diathermy-smoke-contaminate-processed-salvaged-blood-in-cardiac-surgery
#4
Katherine R Hulme, Jon van den Burg
INTRODUCTION: A cell salvage device is used in cardiac surgery with the aim of reducing allogeneic blood transfusion. Suction of blood from the operating field used for the device is often accompanied by diathermy smoke. There is limited published research to know if this blood is then contaminated with clinically significant levels of harmful chemicals from this smoke. Postoperative cardiac surgery patients are already physiologically vulnerable, making the optimization of salvaged blood worth considering...
June 1, 2017: Perfusion
https://www.readbyqxmd.com/read/28610217/a-new-genus-and-species-of-neotropical-nemobiinae-insecta-orthoptera-grylloidea-trigonidiidae-nemobiinae
#5
Fabiene Maria DE Jesus, Marcelo Ribeiro Pereira, Geanne Carla Ripani Rodrigues, Carlos Frankl Sperber
A new genus and a new species of Neotropical cricket is described: Pepoapua cariacica n. gen., n. sp., occurring in four Atlantic Forest remnants in the states of Bahia and Espírito Santo, Brazil. This new genus is morphologically similar in external characteristics, both male and female genitalia, with two other Neotropical genera of Nemobiinae: Amanayara and Kevanemobius. The combination of the external morphological characteristics, along with male genitalia, characterize a new genus through combination of the following characters: (i) males and females with morphologically similar tegmina; (ii) tegmina reduced, not reaching half of the second abdominal segment; (iii) dorsal field of the tegmina with parallel veins, without stridulatory vein or any specialized area for sound production; (iv) tibia of the first pair of legs without tympanum; (v) tibia of the third pair of legs with seven dorsal spurs, four inner and three outer, the proximo-dorsal inner spur reduced in size and the disto-dorsal inner spur without glandular aspect; (vi) ovipositor with distal portion of the dorsal and ventral valves serrated; (vii) male genitalia without evident bristles or sensillas; (viii) pseudepiphallic median lobe presenting apical and ventral projections...
June 9, 2017: Zootaxa
https://www.readbyqxmd.com/read/28583512/comprehensive-management-of-congenital-choanal-atresia
#6
Pierre Brihaye, Isabelle Delpierre, Andrée De Villé, Anne-Britt Johansson, Dominique Biarent, Anne-Laure Mansbach
OBJECTIVES: To present results of a one-stage minimally invasive surgical procedure for congenital choanal atresia (CCA). Seven outcome measures were applied. MATERIALS AND METHODS: Retrospective study conducted between 1999 and 2015. The same endonasal endoscopic approach with multiflaps and no stenting was used on 36 children. The flaps were attached with fibrine glue. There were 50% unilateral and 50% bilateral cases, 70% primary and 30% secondary surgery. The mean age at primary surgery for bilateral atresia was 10 days and for unilateral atresia 4 years...
July 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28547740/biliary-duodenal-anastomosis-using-magnetic-compression-following-massive-resection-of-small-intestine-due-to-strangulated-ileus-after-living-donor-liver-transplantation-a-case-report
#7
Ryusuke Saito, Hiroyuki Tahara, Seiichi Shimizu, Masahiro Ohira, Kentaro Ide, Kohei Ishiyama, Tsuyoshi Kobayashi, Hideki Ohdan
BACKGROUND: Despite the improvements of surgical techniques and postoperative management of patients with liver transplantation, biliary complications are one of the most common and important adverse events. We present a first case of choledochoduodenostomy using magnetic compression following a massive resection of the small intestine due to strangulated ileus after living donor liver transplantation. CASE PRESENTATION: The 54-year-old female patient had end-stage liver disease, secondary to liver cirrhosis, due to primary sclerosing cholangitis with ulcerative colitis...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28530723/precision-control-of-flow-rate-in-microfluidic-channels-using-photoresponsive-soft-polymer-actuators
#8
Colm Delaney, Peter McCluskey, Simon Coleman, Jeffrey Whyte, Nigel Kent, Dermot Diamond
A novel approach that allows control of flow in microfluidic channels with unsurpassed performance using light is described. Valve structures have been created using photoresponsive hydrogels based on spiropyran-functionalised pNIPAAm hydrogels photopolymerised around pillar structures within the channels. Valve actuation is controlled from outside the fluidic system using externally located LEDs. Highly precise and accurate flow rates can be selected by passing real-time flow rate measurements into a PID algorithm...
May 31, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28528052/three-cases-of-aneurysmatic-coronary-fistulas-associated-with-mitral-valve-insufficiency
#9
Luca Sandrelli, Giuseppe Petrone, Giancarlo Sportelli, Mario Fabbrocini
We report three cases of coronary fistula aneurysm associated with mitral valve insufficiency. The patients were referred to our cardiovascular department because of exertional dyspnea. Echocardiography showed severe mitral valve insufficiency resulting from leaflet flail or prolapse and normal left ventricular function. In all three cases, preoperative coronary angiography showed coronary-to-pulmonary artery fistula associated with significant aneurysm of the fistulous tract. All patients underwent uneventful mitral valve repair and external ligation of the fistulas...
June 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28526929/analytical-management-of-patients-undergoing-oral-anticoagulant-therapy-could-have-a-strong-impact-on-clinical-outcomes-a-follow-up-study
#10
Vincenzo De Iuliis, Sebastiano Ursi, Gianfranco Vitullo, Irma Griffo, Antonio Marino, Marika Caruso, Francesco Cipollone, Sabrina Capodifoglio, Veronica Breda, Elena Toniato, Alfonso Pennelli, Pio Conti, Stefano Martinotti
INTRODUCTION: Oral anticoagulant therapy, such as vitamin K antagonists (VKAs), is prominent for the prevention of cerebral ischemic stroke or systemic embolism and all-cause mortality in patients with atrial fibrillation, venous thromboembolism, and mechanical or biological valve. VKA treatment requires monitoring of the international normalized ratio (INR) in order to maintain it in a therapeutic range, avoiding side effects, the main and most significant of which is bleeding. The aim of the present study was to evaluate the event rates of several clinical composite outcomes, such as bleeding, thromboembolic events, and all-cause death...
May 19, 2017: Cardiology and Therapy
https://www.readbyqxmd.com/read/28514319/prospective-external-validation-of-three-preoperative-risk-scores-for-prediction-of-new-onset-atrial-fibrillation-after-cardiac-surgery
#11
Matthew J Cameron, Diem T T Tran, Jean Abboud, Ethan K Newton, Houman Rashidian, Jean-Yves Dupuis
BACKGROUND: Postoperative atrial fibrillation (POAF) is associated with early and late morbidity and mortality of cardiac surgical patients. Prophylactic treatment of atrial fibrillation (AF) has been recommended to improve outcome in cardiac surgical patients at high risk of developing POAF. Reliable models for prediction of POAF are needed to achieve that goal. This study attempted to externally validate 3 risk models proposed for preoperative prediction of POAF in cardiac surgical patients: the POAF score, the CHA2DS2-VASc score, and the Atrial Fibrillation Risk Index...
May 12, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28496079/-surgical-treatment-for-anomalous-aortic-origin-of-coronary-arteries
#12
Ryo Hirayama, Ryusuke Suzuki, Toshiaki Watanabe, Mai Matsukawa, Takeshi Sakaguchi, Kenta Uekihara, Yuki Yoshioka, Masaharu Mouri, Tomoya Miyamoto, Masamichi Nakajima
Anomalous aortic origin of coronary arteries is rare. We report 3 cases of surgical treatment for anomalous aortic origin of coronary arteries. Case 1 was a 38-year-old man who was saved by the use of an automated external defibrillator from cardiopulmonary arrest while exercising. The coronary angiogram showed the right coronary artery arising from the left coronary sinus of Valsalva and being located between the aorta and the pulmonary trunk. He underwent coronary artery bypass grafting (CABG) using the right internal thoracic artery with ligation of proximal part of right coronary artery to prevent sudden death...
May 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28476777/disease-stage-dependent-changes-in-cardiac-contractile-performance-and-oxygen-utilization-underlie-reduced-myocardial-efficiency-in-human-inherited-hypertrophic-cardiomyopathy
#13
Ahmet Güçlü, Paul Knaapen, Hendrik J Harms, Rahana Y Parbhudayal, Michelle Michels, Adriaan A Lammertsma, Albert C van Rossum, Tjeerd Germans, Jolanda van der Velden
BACKGROUND: Reduced myocardial efficiency represents a target for therapy in hypertrophic cardiomyopathy although therapeutic benefit may depend on disease stage. Here, we determined disease stage-dependent changes in myocardial efficiency and effects of myectomy surgery. METHODS AND RESULTS: Myocardial external efficiency (MEE) was determined in 27 asymptomatic mutation carriers (genotype positive/phenotype negative), 10 patients with hypertrophic obstructive cardiomyopathy (HOCM), 10 patients with aortic valve stenosis, and 14 healthy individuals using [(11)C]-acetate positron emission tomography and cardiovascular magnetic resonance imaging...
May 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28468207/management-of-rhinophyma-outcomes-study-of-the-subunit-method
#14
Aladdin H Hassanein, Raj M Vyas, Jessica Erdmann-Sager, Edward J Caterson, Julian J Pribaz
BACKGROUND: Rhinophyma causes a nasal deformity and functional airway obstruction. Partial excision (eg, tangential) with secondary healing commonly removes hypertrophic soft tissues but does not improve nasal support. The subunit method for rhinophyma uses 6 nasal flaps to provide exposure for removal of rhinophymatous tissue and enhance structure. The purpose of this study was to evaluate outcomes of subunit method. METHODS: Medical records of patients with rhinophyma treated with the subunit method between 2013 and 2016 were analyzed...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28467855/use-of-ice-nucleating-proteins-to-improve-the-performance-of-freeze-thaw-valves-in-microfluidic-devices
#15
Joseph C Gaiteri, W Hampton Henley, Nathan A Siegfried, Thomas H Linz, J Michael Ramsey
Currently, reliable valving on integrated microfluidic devices fabricated from rigid materials is confined to expensive and complex methods. Freeze-thaw valves (FTVs) can provide a low cost, low complexity valving mechanism, but reliable implementation of them has been greatly hindered by the lack of ice nucleation sites within the valve body's small volume. Work to date has required very low temperatures (on the order of -40 °C or colder) to induce freezing without nucleation sites, making FTVs impractical due to instrument engineering challenges...
June 6, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28427597/intentional-percutaneous-laceration-of%C3%A2-the%C3%A2-anterior-mitral-leaflet-to-prevent%C3%A2-outflow%C3%A2-obstruction-during-transcatheter-mitral-valve-replacement-first-in-human%C3%A2-experience
#16
Vasilis C Babaliaros, Adam B Greenbaum, Jaffar M Khan, Toby Rogers, Dee Dee Wang, Marvin H Eng, William W O'Neill, Gaetano Paone, Vinod H Thourani, Stamatios Lerakis, Dennis W Kim, Marcus Y Chen, Robert J Lederman
OBJECTIVES: This study sought to use a new catheter technique to split the anterior mitral valve leaflet (AML) and prevent iatrogenic left ventricular outflow tract (LVOT) obstruction immediately before transcatheter mitral valve replacement (TMVR). BACKGROUND: LVOT obstruction is a life-threatening complication of TMVR, caused by septal displacement of the AML. METHODS: The procedure was used in patients with severe mitral valve disease and prohibitive surgical risk...
April 24, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28424229/tension-activated-channels-in-the-mechanism-of-osmotic-fitness-in-pseudomonas-aeruginosa
#17
Uğur Çetiner, Ian Rowe, Anthony Schams, Christina Mayhew, Deanna Rubin, Andriy Anishkin, Sergei Sukharev
Pseudomonas aeruginosa (PA) is an opportunistic pathogen with an exceptional ability to adapt to a range of environments. Part of its adaptive potential is the ability to survive drastic osmolarity changes. Upon a sudden dilution of external medium, such as during exposure to rain, bacteria evade mechanical rupture by engaging tension-activated channels that act as osmolyte release valves. In this study, we compare fast osmotic permeability responses in suspensions of wild-type PA and Escherichia coli (EC) strains in stopped-flow experiments and provide electrophysiological descriptions of osmotic-release channels in PA...
May 1, 2017: Journal of General Physiology
https://www.readbyqxmd.com/read/28390614/coblation-of-suprastomal-granulomas-in-tracheostomy-dependent-children
#18
C Scott Brown, Marisa A Ryan, Vaibhav H Ramprasad, Anatoli F Karas, Eileen M Raynor
OBJECTIVE: Suprastomal granulomas pose a persistent challenge for tracheostomy-dependent children. They can limit phonation, cause difficulty with tracheostomy tube changes and prevent decannulation. We describe the use of the coblator for radiofrequency plasma ablation of suprastomal granulomas in five consecutive children from September 2012 to January 2016. METHOD: Retrospective case series at a tertiary medical center. RESULTS: The suprastomal granuloma could be removed with the coblator in all 5 cases...
May 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28382264/use-of-cardiac-computed-tomography-for-ventricular-volumetry-in-late-postoperative-patients-with-tetralogy-of-fallot
#19
Ho Jin Kim, Da Na Mun, Hyun Woo Goo, Tae-Jin Yun
BACKGROUND: Cardiac computed tomography (CT) has emerged as an alternative to magnetic resonance imaging (MRI) for ventricular volumetry. However, the clinical use of cardiac CT requires external validation. METHODS: Both cardiac CT and MRI were performed prior to pulmonary valve implantation (PVI) in 11 patients (median age, 19 years) who had undergone total correction of tetralogy of Fallot during infancy. The simplified contouring method (MRI) and semiautomatic 3-dimensional region-growing method (CT) were used to measure ventricular volumes...
April 2017: Korean Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28340650/functional-rhinoplasty
#20
REVIEW
Oren Friedman, Erdinc Cekic, Ceren Gunel
Understanding nasal anatomy and physiology are the most important points for successful functional rhinoplasty. Anatomic structures playing major roles in nasal breathing functions include the septum, and internal and external nasal valves, so physical examination of these regions is essential. Planning for functional rhinoplasty involves the identification of the sites of nasal airway obstruction or old trauma, and addressing those regions during the operation with a number of different techniques that have been described...
May 2017: Facial Plastic Surgery Clinics of North America
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