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https://www.readbyqxmd.com/read/29148310/biventricular-repair-of-double-outlet-right-ventricle-preoperative-echocardiography-and-surgical-outcomes
#1
Hong Meng, Kun-Jing Pang, Shou-Jun Li, David Hsi, Jun Yan, Sheng-Shou Hu, Zhong-Dong Hua, Hao Wang
OBJECTIVE: To discuss the key anatomic features of double outlet right ventricle (DORV) assessed by preoperative echocardiography among patients treated with different types of biventricular repair. METHODS: Surgical and echocardiographic databases were queried to identify patients who had undergone biventricular repair for DORV and had adequate preoperative echocardiographic imaging. All patients underwent pre- and postoperative echocardiography and clinical evaluation following discharge...
May 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/29148124/the-safety-of-live-attenuated-influenza-vaccine-in-children-and-adolescents-2-through-17%C3%A2-years-of-age-a-vaccine-safety-datalink-study
#2
Matthew F Daley, Christina L Clarke, Jason M Glanz, Stanley Xu, Simon J Hambidge, James G Donahue, James D Nordin, Nicola P Klein, Steven J Jacobsen, Allison L Naleway, Michael L Jackson, Grace Lee, Jonathan Duffy, Eric Weintraub
PURPOSE: To evaluate the safety of live attenuated influenza vaccine (LAIV) in children 2 through 17 years of age. METHODS: The study was conducted in 6 large integrated health care organizations participating in the Vaccine Safety Datalink (VSD). Trivalent LAIV safety was assessed in children who received LAIV between September 1, 2003 and March 31, 2013. Eighteen pre-specified adverse event groups were studied, including allergic, autoimmune, neurologic, respiratory, and infectious conditions...
November 17, 2017: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/29142814/a-membranous-septal-aneurysm-causing-right-ventricular-outflow-tract-obstruction-in-an-adult
#3
Fiorella Privitera, Ines Paola Monte, Antonino Indelicato, Corrado Tamburino
We describe a case of a 69-year-old female referred for the evaluation of exertional dyspnea, with a small membranous ventricular septal defect (VSD) and right ventricle (RV) outflow tract obstruction. Using transthoracic echo was diagnosed VSD with left to right shunting and transesophageal echo (TEE) was used to a better anatomical characterization. TEE showed a perimembranous subaortic VSD that developed a high-velocity flow in RV. Pulmonary valve appears normal and right ventricular infundibular hypertrophy or double-chambered RV was excluded from the study...
October 2017: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/29130013/an-unusual-mechanism-of-closure-of-muscular-ventricular-septal-defects
#4
Soham Dasgupta, Ashraf M Aly
Ventricular septal defects (VSDs) are the most common congenital heart defects. Most of the small or moderate size (<6 mm) muscular VSDs close spontaneously within the first two years of life. The usual mechanism of spontaneous closure involves muscular tissue encroachment with superimposed fibrosis or primary fibrous tissue formation around the margins of the defect. We describe an unusual mechanism of spontaneous closure of a muscular VSD.
2017: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/29129255/regional-variation-in-quality-of-life-in-patients-with-a-fontan-circulation-a-multinational-perspective
#5
Nicholas D Fogleman, Silke Apers, Philip Moons, Stacey Morrison, Samuel G Wittekind, Martha Tomlin, Kathy Gosney, Maayke A Sluman, Bengt Johansson, Junko Enomoto, Mikael Dellborg, Chun-Wei Lu, Raghavan Subramanyan, Koen Luyckx, Werner Budts, Jamie Jackson, Adrienne Kovacs, Alexandra Soufi, Katrine Eriksen, Corina Thomet, Malin Berghammer, Edward Callus, Susan M Fernandes, Maryanne Caruana, Stephen C Cook, Andrew S Mackie, Kamila S White, Paul Khairy, Shelby Kutty, Gruschen Veldtman
BACKGROUND: Impaired quality of life (QOL) is associated with congenital heart disease (CHD) and country of residence; however, few studies have compared QOL in patients with differing complexities of CHD across regional populations. The current study examined regional variation in QOL outcomes in a large multinational sample of patients with a Fontan relative to patients with atrial septal defects (ASDs) and ventricular septal defects (VSDs). METHODS: From the Assessment of Patterns of Patient-Reported Outcomes in Adults with Congenital Heart disease-International Study (APPROACH-IS), 405 patients (163 Fontan and 242 ASD/VSD) across Asia, Europe, and North America provided consent for access to their medical records and completed a survey evaluating QOL (0 to 100 linear analog scale)...
November 2017: American Heart Journal
https://www.readbyqxmd.com/read/29125001/hypoxia-due-to-positive-pressure-ventilation-in-edwards-syndrome-a-case-report
#6
Sun Kyung Hoon, Seung-Woo Kang, Sang-Hyun Kwak, Joungmin Kim
Edwards' syndrome also known as trisomy 18 is a congenital disorder associated with cardiovascular issues including ventricular septal defect (VSD), atrial septal defect (ASD) and patent duct arteriosus (PDA). An emergency colostomy was performed on a neonate born with an imperforate anus. Pre-operative transthoracic echocardiography showed presence of VSD, a patent foramen ovale (PFO) or ASD. Even though the baby had a good general condition and optimal peripheral oxygen saturation (SpO2), during positive pressure ventilation, she suffered severe hypoxia (50% SpO2)...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/29118953/the-role-of-preoperative-sildenafil-therapy-in-controlling-of-postoperative-pulmonary-hypertension-in-children-with-ventricular-septal-defects
#7
Hamid Bigdelian, Mohsen Sedighi
Introduction: Most of the ventricular septal defects (VSD) are complicated with pulmonary arterial hypertension (PAH) which is the major cause of pulmonary hypertensive crisis and right ventricular failure. Methods: We reviewed clinical outcomes of 63 infants who underwent cardiac surgery and were divided into three groups. Control group (n=20) did not received sildenafil while group A (n = 22) received drug (0.3 mg/kg) before and after surgery. Group B (n=21) received drug at the initiation of surgery. Demographic data, preoperative and postoperative variables were compared among the patients...
2017: Journal of Cardiovascular and Thoracic Research
https://www.readbyqxmd.com/read/29104469/mef2c-loss-of-function-mutation-contributes-to-congenital-heart-defects
#8
Xiao-Hui Qiao, Fei Wang, Xian-Ling Zhang, Ri-Tai Huang, Song Xue, Juan Wang, Xing-Biao Qiu, Xing-Yuan Liu, Yi-Qing Yang
Congenital heart disease (CHD) is the most common type of developmental abnormality in humans, and is a leading cause for substantially increased morbidity and mortality in affected individuals. Increasing studies demonstrates a pivotal role of genetic defects in the pathogenesis of CHD, and presently mutations in more than 60 genes have been associated with CHD. Nevertheless, CHD is of pronounced genetic heterogeneity, and the genetic basis underpinning CHD in a large proportion of patients remains unclear...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29093633/modulating-the-voltage-sensitivity-of-a-genetically-encoded-voltage-indicator
#9
Arong Jung, Dhanarajan Rajakumar, Bong-June Yoon, Bradley J Baker
Saturation mutagenesis was performed on a single position in the voltage-sensing domain (VSD) of a genetically encoded voltage indicator (GEVI). The VSD consists of four transmembrane helixes designated S1-S4. The V220 position located near the plasma membrane/extracellular interface had previously been shown to affect the voltage range of the optical signal. Introduction of polar amino acids at this position reduced the voltage-dependent optical signal of the GEVI. Negatively charged amino acids slightly reduced the optical signal by 33 percent while positively charge amino acids at this position reduced the optical signal by 80%...
October 2017: Experimental Neurobiology
https://www.readbyqxmd.com/read/29082558/quantification-of-the-area-and-shunt-volume-of-multiple-circular-and-noncircular-ventricular-septal-defects-a-2d-3d-echocardiography-comparison-and-real-time-3d-color-doppler-feasibility-determination-study
#10
Evan Tracy, Meihua Zhu, Cole Streiff, David J Sahn, Muhammad Ashraf
BACKGROUND: Quantification of defect size and shunt flow is an important aspect of ventricular septal defect (VSD) evaluation. This study compared three-dimensional echocardiography (3DE) with the current clinical standard two-dimensional echocardiography (2DE) for quantifying defect area and tested the feasibility of real time 3D color Doppler echocardiography (RT3D-CDE) for quantifying shunt volume of irregular shaped and multiple VSDs. METHODS: Latex balloons were sutured into the ventricles of 32 freshly harvested porcine hearts and were connected with tubing placed in septal perforations...
October 29, 2017: Echocardiography
https://www.readbyqxmd.com/read/29082523/ventricular-mechanics-after-repair-of-subarterial-and-perimembranous-vsds
#11
Sit-Yee Kwok, Susanna So-Shan Yeung, Vivian Wing-Yi Li, Yiu-Fai Cheung
BACKGROUND: Emerging data suggest impaired biventricular function in adults late after repair of ventricular septal defect (VSD). We assessed and compared right (RV) and left ventricular (LV) mechanics in adolescents and adults after surgical closure of doubly committed subarterial and perimembranous VSDs. METHODS: A total of 75 subjects were studied: 29 patients after subarterial VSD repair (group I), 17 patients after perimembranous VSD repair (group II) and 29 age-matched controls (group III)...
October 30, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29080844/a-new-approach-for-risk-assessment-of-aggregate-dermal-exposure-to-banned-azo-dyes-in-textiles
#12
Xuezhang Chen, Qixi Deng, Shubao Lin, Chao Du, Shengqiao Zhao, Yongjie Hu, Zhongguo Yang, Yanhui Lyu, Jianjian Han
A semi-quantitative risk assessment of banned azo dyes in textiles was performed to assess the health risk when consumers have direct dermal contact with these products. A novel model, which includes three exposure scenarios, was proposed to estimate the absorption of leachable azo dyes from twenty textiles samples. The effective daily uptakes of benzidine from sample 1 and sample 19 in chronic exposure model were 0.318 ng/kg-day and 0.011 ng/kg-day, respectively. Compared to virtually safe dose (VSD), the corresponding cancer risks were 7...
November 2, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29078287/pip2-mediates-functional-coupling-and-pharmacology-of-neuronal-kcnq-channels
#13
Robin Y Kim, Stephan A Pless, Harley T Kurata
Retigabine (RTG) is a first-in-class antiepileptic drug that suppresses neuronal excitability through the activation of voltage-gated KCNQ2-5 potassium channels. Retigabine binds to the pore-forming domain, causing a hyperpolarizing shift in the voltage dependence of channel activation. To elucidate how the retigabine binding site is coupled to changes in voltage sensing, we used voltage-clamp fluorometry to track conformational changes of the KCNQ3 voltage-sensing domains (VSDs) in response to voltage, retigabine, and PIP2...
October 23, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29075526/supravalvar-mitral-ring-with-a-parachute-mitral-valve-and-subcoarctation-of-the-aorta-in-a-child-with-hemodynamically-significant-vsd-a-study-of-the-morphology-echocardiographic-diagnostics-and-surgical-therapy
#14
Wojciech Mądry, Maciej A Karolczak, Krzysztof Grabowski
The authors present a case of echocardiographic diagnosis of supravalvar mitral ring (a fibromembranous structure that arose from the atrial surface of the mitral leaflets) in a child with a parachute mitral valve, a ventricular septal defect, and mild narrowing of the aortic isthmus. The supravalvar mitral stenosis is a typical but very infrequently detected element of the complex of anatomical abnormalities located within the left heart and the proximal aorta, called the Shone's complex (syndrome). Diagnosing an additional, hemodynamically significant anatomic defect during echocardiography was possible thanks to the detection of marked mobility limitation of the ring-adjacent part of the mitral valve mural leaflet as well as of an atypical image of turbulence occurring during the inflow from the left atrium to the left ventricle...
September 2017: Journal of Ultrasonography
https://www.readbyqxmd.com/read/29067708/preliminary-study-of-the-application-of-transthoracic-echocardiography-guided-three-dimensional-printing-for-the-assessment-of-structural-heart-disease
#15
Yanbo Zhu, Jianshi Liu, Lianqun Wang, Xin Guan, Yongjuan Luo, Jie Geng, Qingguo Geng, Yunjia Lin, Lixia Zhang, Xixue Li, Yaping Lu
OBJECTIVE: To investigate the feasibility and diagnostic value of a preoperative transthoracic echocardiography-guided three-dimensional printed model (TTE-guided 3DPM) for the assessment of structural heart disease (SHD). METHODS: Fourty-four patients underwent cardiac surgery at Tianjin Chest Hospital. The patients were preoperatively assessed using TTE-guided 3DPM, which was compared to conventional three-dimensional transthoracic echocardiography (3DTTE) along with direct intraoperative findings, which were considered the "gold standard...
October 25, 2017: Echocardiography
https://www.readbyqxmd.com/read/29067078/tetralogy-of-fallot-repair-in-patients-presenting-after-infancy-a-single-surgeon-experience
#16
Tariq Waqar, Muhammad Usman Riaz, Tania Mahar
OBJECTIVE: To determine the early surgical outcomes of Tetralogy of Fallot (TOF) repair in children and young adults operated after the age of one year. METHODS: In this retrospective study, 307 cases of primary repair of Tetralogy of Fallot were done between September 2012 to February 2017, at CPE Institute of cardiology, Multan. Out of 307 operated patients, 4 (1.3%) patients had previous modified Blalock Taussig shunts, 2 (0.6%) associated ASD with TOF, 3 (0...
July 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29062383/perventricular-muscular-ventricular-septal-defect-vsd-closure-under-epicardial-echocardiography-guidance-a-case-report
#17
Akbar Molaei, Abbas Afrasiabi, Eisa Bilejani, Mahmud Samadi
Ventricular septal defects (VSDs) are among the most common congenital cardiac lesions. Large defects at apicomuscular regions, especially in young patients, are far from accessible to surgeons for conventional surgery. Moreover, the transcatheter closure of VSDs in these patients is difficult and carries a high risk of complications because of the large sheath size relative to the patient's size. The periventricular approach simplifies VSD closure and, thus, eliminates the potential complications of cardiac catheterization and fluoroscopy as it is performed under echocardiographic guidance...
July 2017: Journal of Tehran Heart Center
https://www.readbyqxmd.com/read/29061349/patterns-of-childhood-immunization-and-all-cause-mortality
#18
Natalie L McCarthy, Lakshmi Sukumaran, Sophia Newcomer, Jason Glanz, Matthew F Daley, David McClure, Nicola P Klein, Stephanie Irving, Michael L Jackson, Bruno Lewin, Eric Weintraub
BACKGROUND: Evidence supports the safety of the recommended childhood immunization schedule as a whole. However, additional research is warranted as parents' refusing or delaying vaccinations has increased in recent years. All-cause mortality has been identified as a priority outcome to study in the context of the recommended immunization schedule. METHODS: We included children born January 1, 2004 through December 31, 2009, enrolled in the Vaccine Safety Datalink (VSD) from birth through 18 months of age...
October 20, 2017: Vaccine
https://www.readbyqxmd.com/read/29060875/pyramid-approach-for-the-reduction-of-parallax-related-artefacts-in-optical-recordings-of-moving-translucent-volumes
#19
Philipp Flotho, Alejandro Romero-Santiago, Karsten Schwerdtfeger, Matthias Hulser, Lars Haab, Daniel J Strauss
Functional optical imaging (OI) of intrinsic signals (like blood oxygenation coupled reflection changes) and of extrinsic properties of voltage sensitive probes (like voltage-sensitive dyes (VSD)) forms a group of invasive neuroimaging techniques, that possess up to date the highest temporal and spatial resolution on a meso- to macroscopic scale. There are different sources that contribute to the OI signal of which many are noise. In our previous works, we have used dense optical flow for the reduction of movement artefacts...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29056022/-clinical-effects-of-middle-and-low-peroneal-artery-perforator-flap-with-pedicle-on-repairing-skin-and-soft-tissue-defects-of-ankle
#20
H Li, C Zhang, C L Deng, X J Tang, K Y Nie, Z R Wei
Objective: To investigate clinical effects of middle and low peroneal artery perforator flap with pedicle on repairing skin and soft tissue defects of ankle. Methods: Twenty patients with skin and soft tissue defects of ankle and exposure of tendon and bone were admitted in our burn wards from April 2012 to December 2015. The size of skin and soft tissue defects ranged from 5 cm×4 cm to 23 cm×10 cm. Patients were treated with debridement and vacuum sealing drainage (VSD) after admission. After VSD treatment for 1 week, flap transplantation operation was performed...
October 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
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