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Heart printing

Sharrelle Barber, DeMarc A Hickson, Xu Wang, Mario Sims, Cheryl Nelson, Ana V Diez-Roux
OBJECTIVES: To examine the impact of neighborhood conditions resulting from racial residential segregation on cardiovascular disease (CVD) risk in a socioeconomically diverse African American sample. METHODS: The study included 4096 African American women (n = 2652) and men (n = 1444) aged 21 to 93 years from the Jackson Heart Study (Jackson, Mississippi; 2000-2011). We assessed neighborhood disadvantage with a composite measure of 8 indicators from the 2000 US Census...
October 13, 2016: American Journal of Public Health
Peyman Sardari Nia, Samuel Heuts, Jean Daemen, Peter Luyten, Jindrich Vainer, Jan Hoorntje, Emile Cheriex, Jos Maessen
OBJECTIVES: Mitral valve repair performed by an experienced surgeon is superior to mitral valve replacement for degenerative mitral valve disease; however, many surgeons are still deterred from adapting this procedure because of a steep learning curve. Simulation-based training and planning could improve the surgical performance and reduce the learning curve. The aim of this study was to develop a patient-specific simulation for mitral valve repair and provide a proof of concept of personalized medicine in a patient prospectively planned for mitral valve surgery...
September 27, 2016: Interactive Cardiovascular and Thoracic Surgery
Massimiliano Cantinotti, Israel Valverde, Shelby Kutty
The purpose of this article is to discuss technical considerations and current applications of three-dimensional (3D) printing in congenital heart disease (CHD). CHD represent an attractive field for the application of 3D printed models, with consistent progress made in the past decade. Current 3D models are able to reproduce complex cardiac and extra-cardiac anatomy including small details with very limited range of errors (<1 mm), so this tool could be of value in the planning of surgical or percutaneous treatments for selected cases of CHD...
September 27, 2016: International Journal of Cardiovascular Imaging
Joshua L Hermsen, Thomas M Burke, Stephen P Seslar, David S Owens, Beth A Ripley, Nahush A Mokadam, Edward D Verrier
OBJECTIVE: Static 3-dimensional printing is used for operative planning in cases that involve difficult anatomy. An interactive 3D print allowing deliberate surgical practice would represent an advance. METHODS: Two patients with hypertrophic cardiomyopathy had 3-dimensional prints constructed preoperatively. Stereolithography files were generated by segmentation of chest computed tomographic scans. Prints were made with hydrogel material, yielding tissue-like models that can be surgically manipulated...
August 20, 2016: Journal of Thoracic and Cardiovascular Surgery
Jipeng Li, Mingjiao Chen, Xianqun Fan, Huifang Zhou
Bioprinting technology shows potential in tissue engineering for the fabrication of scaffolds, cells, tissues and organs reproducibly and with high accuracy. Bioprinting technologies are mainly divided into three categories, inkjet-based bioprinting, pressure-assisted bioprinting and laser-assisted bioprinting, based on their underlying printing principles. These various printing technologies have their advantages and limitations. Bioprinting utilizes biomaterials, cells or cell factors as a "bioink" to fabricate prospective tissue structures...
2016: Journal of Translational Medicine
Radoslaw Pracon, Roman Grygoruk, Zofia Dzielinska, Cezary Kepka, Agnieszka Dąbrowska, Marek Konka, Przemysław Jazwiec, Krzysztof Reczuch, Adam Witkowski, Marcin Demkow
No abstract text is available yet for this article.
September 18, 2016: EuroIntervention
Adam Golab, Marcin Slojewski, Miroslaw Brykczynski, Magdalena Lukowiak, Marek Boehlke, Daniel Matias, Tomasz Smektala
Three-dimensional (3D) printing involves preparing 3D objects from a digital model. These models can be used to plan and practice surgery. We used 3D printing to plan for a rare complicated surgery involving the removal of a renal tumor and neoplastic mass, which reached the heart atrium. A printed kidney model was an essential element of communication for physicians with different specializations.
2016: Heart Surgery Forum
Scott R Smith, Vincent J Samar
Deaf and hard-of-hearing (D/HH) adults have lower health literacy compared to hearing adults, but it is unclear whether this disparity also occurs in adolescence. We used the Health Literacy Skills Instrument-Short Form (HLSI-SF), Short Form of the Test of Functional Health Literacy in Adults (S-TOFHLA), Comprehensive Heart Disease Knowledge Questionnaire (CHDKQ), and newly constructed interactive and critical health literacy survey items to quantify D/HH and hearing adolescents' health literacy. We adapted and translated survey materials into sign language and spoken English to reduce testing bias due to variable English language skills...
2016: Journal of Health Communication
Saif Alarab Mohmmed, Morgana E Vianna, Matthew R Penny, Stephen T Hilton, Nicola Mordan, Jonathan C Knowles
OBJECTIVE: Root canal irrigation is an important adjunct to control microbial infection. This study aimed primarily to develop a transparent root canal model to study in situ Enterococcus faecalis biofilm removal rate and remaining attached biofilm using passive or active irrigation solution for 90s. The change in available chlorine and pH of the outflow irrigant were assessed. METHODS: A total of forty root canal models (n=10 per group) were manufactured using 3D printing...
October 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Sevinc Kurbanoglu, Lourdes Rivas, Sibel A Ozkan, Arben Merkoçi
In this work, a novel biosensor based on electrochemically reduced graphene oxide and iridium oxide nanoparticles for the detection of angiotensin-converting enzyme inhibitor drug, captopril, is presented. For the preparation of the biosensor, tyrosinase is immobilized onto screen printed electrode by using 1-Ethyl-3-(3-dimethylaminopropyl)-carbodiimide and N-Hydroxysuccinimide coupling reagents, in electrochemically reduced graphene oxide and iridium oxide nanoparticles matrix. Biosensor response is characterized towards catechol, in terms of graphene oxide concentration, number of cycles to reduce graphene oxide, volume of iridium oxide nanoparticles and tyrosinase solution...
July 30, 2016: Biosensors & Bioelectronics
R Guidoin, R Zegdi, J Lin, J Mao, O Rochette-Drouin, D How, X Guan, P Bruneval, L Wang, L Germain, Z Zhang
INTRODUCTION: Prior to deployment, the percutaneous heart valves must be crimped and loaded into sheaths of diameters that can be as low as 6mm for a 23mm diameter valve. However, as the valve leaflets are fragile, any damage caused during this crimping process may contribute to reducing its long-term durability in vivo. MATERIAL AND METHOD: Bovine pericardium percutaneous valves were manufactured as follows. The leaflets were sutured on a nitinol frame. A polyester cuff fabric served as a buffer between the pericardium and the stent...
July 22, 2016: Morphologie: Bulletin de L'Association des Anatomistes
Claudia Trudel-Fitzgerald, Ying Chen, Ankura Singh, Olivia I Okereke, Laura D Kubzansky
OBJECTIVES: To review the contribution of the Nurses' Health Studies (NHS) on factors that influence mental and physical health. METHODS: Narrative review of all published articles using data from the NHS, the NHS II, and the Growing Up Today Study focusing on mental health conditions (e.g., depression, posttraumatic stress disorder, anxiety) and psychosocial resources and stressors (e.g., job strain, interpersonal violence, social relationships, sexual orientation) between 1990 and 2016...
September 2016: American Journal of Public Health
Carrie J Lovitt, Todd B Shelper, Vicky M Avery
INTRODUCTION: Cell culture models have been at the heart of anti-cancer drug discovery programs for over half a century. Advancements in cell culture techniques have seen the rapid evolution of more complex in vitro cell culture models investigated for use in drug discovery. Three-dimensional (3D) cell culture research has become a strong focal point, as this technique permits the recapitulation of the tumor microenvironment. Biologically relevant 3D cellular models have demonstrated significant promise in advancing cancer drug discovery, and will continue to play an increasing role in the future...
September 2016: Expert Opinion on Drug Discovery
Shafkat Anwar, Gautam K Singh, Justin Varughese, Hoang Nguyen, Joseph J Billadello, Elizabeth F Sheybani, Pamela K Woodard, Peter Manning, Pirooz Eghtesady
No abstract text is available yet for this article.
July 14, 2016: JACC. Cardiovascular Imaging
Pieter M A Desmet, Maria C Sääksjärvi
BACKGROUND: The current article explores the effect of design on the efficacy of behavioural intervention technologies (BITs). With a user-centred design process, colourful key ring coins were created as a means of introducing self-administered behavioural interventions. METHODS: A 6-week study tested whether the tangible objects contributed to the effectiveness of these interventions. Three groups were compared (N = 100): one group received happiness-enhancing activities printed on key ring coins, one group received the same activity tasks printed on paper, and one group served as a control...
2016: Psychology of Well-being
Antonio de Padua Mansur, Desidério Favarato
BACKGROUND: Studies have shown different mortalities due to cardiovascular diseases (CVD), ischemic heart disease (IHD) and cerebrovascular diseases (CbVD) in the five Brazilian regions. Socioeconomic conditions of those regions are frequently used to justify differences in mortality due to those diseases. In addition, studies have shown a reduction in the differences between the mortality rates of the five Brazilian regions. OBJECTIVE: To update CVD mortality data in women and men in the five Brazilian regions...
August 2016: Arquivos Brasileiros de Cardiologia
David M Kwartowitz, Fuad N Mefleh, G Hamilton Baker
PURPOSE: Radiation exposure in interventional cardiology is an important consideration, due to risk of cancer and other morbidity to the patient and clinical staff. Cardiac catheterizations rely heavily on fluoroscopic imaging exposing both patient and clinician to ionizing radiation. An image-guided surgery system capable of facilitating cardiac catheterizations was developed and tested to evaluate dose reduction. METHODS: Several electromagnetically tracked tools were constructed specifically a 7-Fr catheter with five 5-degree-of-freedom magnetic seeds...
July 19, 2016: International Journal of Computer Assisted Radiology and Surgery
Mika Salmi
Most of the 3D printing applications of preoperative models have been focused on dental and craniomaxillofacial area. The purpose of this paper is to demonstrate the possibilities in other application areas and give examples of the current possibilities. The approach was to communicate with the surgeons with different fields about their needs related preoperative models and try to produce preoperative models that satisfy those needs. Ten different kinds of examples of possibilities were selected to be shown in this paper and aspects related imaging, 3D model reconstruction, 3D modeling, and 3D printing were presented...
2016: Journal of Medical Engineering
Marija Vukicevic, Danial S Puperi, K Jane Grande-Allen, Stephen H Little
As catheter-based structural heart interventions become increasingly complex, the ability to effectively model patient-specific valve geometry as well as the potential interaction of an implanted device within that geometry will become increasingly important. Our aim with this investigation was to combine the technologies of high-spatial resolution cardiac imaging, image processing software, and fused multi-material 3D printing, to demonstrate that patient-specific models of the mitral valve apparatus could be created to facilitate functional evaluation of novel trans-catheter mitral valve repair strategies...
June 20, 2016: Annals of Biomedical Engineering
Karen van Hedel, Iván Mejía-Guevara, Mauricio Avendaño, Erika L Sabbath, Lisa F Berkman, Johan P Mackenbach, Frank J van Lenthe
OBJECTIVES: To investigate whether less-healthy work-family life histories contribute to the higher cardiovascular disease prevalence in older American compared with European women. METHODS: We used sequence analysis to identify distinct work-family typologies for women born between 1935 and 1956 in the United States and 13 European countries. Data came from the US Health and Retirement Study (1992-2006) and the Survey of Health, Aging, and Retirement in Europe (2004-2009)...
August 2016: American Journal of Public Health
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