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Valve prosthesis children

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https://www.readbyqxmd.com/read/29770290/current-surgical-strategies-and-techniques-of-aortic-valve-diseases-in-children
#1
REVIEW
Kun Wang, Huifeng Zhang, Bing Jia
While the long-term outcome of surgical aortic valvotomy (SAV) appears to be better than that of balloon aortic valvuloplasty (BAV) as the primary procedure of aortic valve stenosis, the surgical strategies and techniques of treating aortic valve disease in children in other situations remain controversial. Valve repair should be first considered while replacement is still unavoidable in some cases, and new repair techniques developed by innovative surgeons are gradually becoming adopted. Some complex repair procedures such as cusp extension, leaflet replacement/reconstruction have provided satisfactory outcomes...
April 2018: Translational Pediatrics
https://www.readbyqxmd.com/read/29452875/use-of-expanders-for-bowel-protection-in-pediatric-pelvic-tumor-radiation-therapy-15-years-of-tolerance-results
#2
Fernand Missohou
PURPOSE: Bowel is often the dose-limiting organ in curative pelvic irradiation because of radiation enteritis when dose exceeds 40 to 45 Gy. To limit radiation enteritis, a silicone tissue-expander prothesis (STEP) connected to a subcutaneous self-sealing valve was prospectively used in children undergoing pelvic or abdominal radiation therapy. This study reports the 15-year long-term outcomes of this prospective series. METHODS AND MATERIALS: Between 1987 and 2008, 29 children from 3 Paris institutions received pelvic radiation therapy after surgical placement of a STEP in the pelvis...
December 14, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29425297/surgical-repair-of-atrioventricular-septal-defects-incidence-and-mode-of-failure-of-the-left-atrioventricular-valve
#3
Thierry Bové, Ine Strubbe, Kristof Vandekerckhove, Joseph Panzer, Katya De Groote, Daniel De Wolf, Katrien François
OBJECTIVES: Our goal was to investigate the outcome of the left atrioventricular valve (LAVV) after repair of atrioventricular septal defects (AVSDs) by analysing the mechanisms of LAVV failure. METHODS: A retrospective investigation of 202 children with AVSD, operated on between 1992 and 2016, was performed. Analysis focused on freedom from reoperation for LAVV dysfunction, with specific attention to the modes of failure. RESULTS: The population consisted of 129 (64%) patients with complete AVSD (cAVSD) and 73 (36%) patients with partial AVSD (pAVSD), corrected at a median age of 3...
February 7, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28541598/paediatric-melody%C3%A2-mitral-valve-replacement-in-acute-endocarditis-alternative-surgical-hybrid-technique
#4
Ireneusz Haponiuk, Maciej Chojnicki, Radosław Jaworski, Mariusz Steffens, Konrad Paczkowski, Aneta Szofer-Sendrowska, Marta Paśko-Majewska, Katarzyna Gierat-Haponiuk, Anna Romanowicz, Wiktor Szymanowicz
BACKGROUND AND AIM: Acute endocarditis (AE) is still rare disease in the paediatric population; nevertheless, the children suffering from AE usually need heart valve repair or replacement in emergency settings. METHODS: We present a case of emergency mitral valve replacement with the use of Melody balloon expandable stented bioprosthesis in a two-year-old patient with AE and subsequent mitral (bicuspid) valve incompetence after aggressive infective destruction with the symptoms of critical multi-organ failure...
2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28366467/aortic-root-replacement-for-children-with-loeys-dietz-syndrome
#5
Nishant D Patel, Diane Alejo, Todd Crawford, Narutoshi Hibino, Harry C Dietz, Duke E Cameron, Luca A Vricella
BACKGROUND: Loeys-Dietz syndrome (LDS) is an aggressive aortopathy with a proclivity for aortic aneurysm rupture and dissection at smaller diameters than other connective tissue disorders. We reviewed our surgical experience of children with LDS to validate our guidelines for prophylactic aortic root replacement (ARR). METHODS: We reviewed all children (younger than 18 years) with a diagnosis of LDS who underwent ARR at our institution. The primary endpoint was mortality, and secondary endpoints included complications and the need for further interventions...
May 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28044989/surgical-mitral-valve-replacement-with-the-melody-valve-in-infants-and-children-the-italian-experience
#6
Alessandro Frigiola, Francesca Romana Pluchinotta, Antonio Saracino, Alessandro Giamberti, Carmelo Arcidiacono, Luciane Piazza, Matteo Reali, Gianfranco Butera, Alessandro Varrica, Mario Carminati
AIMS: Paediatric patients with mitral valve (MV) disease have limited options for prosthetic MV replacement. Based on long experience with the stented bovine jugular vein graft (Melody valve) in the right ventricular outflow tract, we aimed to test the use of the Melody valve as a surgical implant in the mitral position in a small group of infants with congenital mitral disease. METHODS AND RESULTS: Eight patients, aged from 3 months to 6.2 years, with congenital MV dysplasia underwent Melody valve implantation in the mitral position between March 2014 and October 2015...
April 20, 2017: EuroIntervention
https://www.readbyqxmd.com/read/27436872/valve-sparing-root-replacement-in-children
#7
Jolanda Kluin, David R Koolbergen, Vladimir Sojak, Mark G Hazekamp
OBJECTIVES: In children, words of caution have been raised about valve-sparing procedures especially regarding the valve-remodelling technique. This study reviewed our experience with the valve-sparing reimplantation technique in children. METHODS: All consecutive paediatric (<18 years) patients who underwent valve-sparing root replacement in our centre in the past 12.5 years were retrospectively analysed. RESULTS: Nineteen patients (median age 13...
September 2016: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/27345614/biomechanics-drive-histological-wall-remodeling-of-neoaortic-root-a-mathematical-model-to-study-the-expression-levels-of-ki-67-metalloprotease-and-apoptosis-transition
#8
Francesco Nappi, Massimiliano Fraldi, Cristiano Spadaccio, Angelo Rosario Carotenuto, Stefania Montagnani, Clotilde Castaldo, Juan Carlos Chachques, Christophe Acar
The pulmonary artery autograft (PA) is the ideal substitute for aortic valve disease in children and young adult. However, it is harnessed by the issue of long-term dilation and regurgitation, often requiring surgery. PA implanted in aortic position during the growth phase in children undergoes a process of mechanical remodeling. We previously developed a semiresorbable armored prosthesis able to mechanically sustain the neoaorta preventing dilation and to gradually integrate with the PA wall inducing a progressive arterial-like tissue positive remodeling...
November 2016: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/27060049/mechanical-pulmonary-valve-replacement
#9
REVIEW
John M Stulak, Bassem N Mora, Sameh M Said, Hartzell V Schaff, Joseph A Dearani
Although most valve operations performed annually address lesions of the aortic or mitral valves, the frequency of pulmonary valve replacement (PVR) is increasing because most patients with congenital heart disease are surviving into the adult years. The vast majority of patients, especially children that require PVR, obtain a tissue valve because of the relative good durability and the lack of a need for anticoagulation. Because the need for repeat operation is inevitable for most patients, and the population of adults with congenital heart disease continues to grow, there are increasing situations in which a mechanical pulmonary prosthesis may be appropriate...
2016: Seminars in Thoracic and Cardiovascular Surgery. Pediatric Cardiac Surgery Annual
https://www.readbyqxmd.com/read/27041455/ross-versus-non-ross-aortic-valve-replacement-in-children-a-22-year-single-institution-comparison-of-outcomes
#10
COMPARATIVE STUDY
John W Brown, Parth M Patel, Jiuann-Huey Ivy Lin, Asma S Habib, Mark D Rodefeld, Mark W Turrentine
BACKGROUND: The Ross aortic valve replacement (AVR) has been the AVR of choice for children at our center since 1993. Absence or inadequate quality of the pulmonary valve or, less commonly, family or surgeon preference caused us to select an alternative AVR prosthesis for some children. This review compares the outcomes of 42 children who received a non-Ross AVR with 115 children undergoing Ross root replacement at our institution during the most recent 22 years. METHODS: A retrospective chart review of the 42 pediatric non-Ross AVRs was compared with 115 Ross AVRs...
May 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/26897842/degenerative-calcification-of-pericardial-bioprostheses-comparison-of-five-implantation-methods-in-a-rabbit-model
#11
COMPARATIVE STUDY
Dai-Hyun Kim, Han Ki Park, Young Hwan Park, Seung Hyun Lee, Hyun-Chel Joo, Sak Lee, Young-Nam Youn, Hong Ju Shin
BACKGROUND AND AIM OF THE STUDY: The degenerative calcification of bioprosthetic heart valves remains a clinical challenge, especially among young adults and children. Animal models that are based on subcutaneous and intramuscular implantation and are typically used to assess interventions to prevent bioprosthetic heart valve calcification do not reflect actual hemodynamic stress and lack direct blood contact. Thus, the study aim was to investigate bioprosthesis calcification at different implantation sites...
September 2015: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/26896320/decellularized-aortic-homografts-for-aortic-valve-and-aorta-ascendens-replacement
#12
MULTICENTER STUDY
Igor Tudorache, Alexander Horke, Serghei Cebotari, Samir Sarikouch, Dietmar Boethig, Thomas Breymann, Philipp Beerbaum, Harald Bertram, Mechthild Westhoff-Bleck, Karolina Theodoridis, Dmitry Bobylev, Eduard Cheptanaru, Anatol Ciubotaru, Axel Haverich
OBJECTIVES: The choice of valve prosthesis for aortic valve replacement (AVR) in young patients is challenging. Decellularized pulmonary homografts (DPHs) have shown excellent results in pulmonary position. Here, we report our early clinical results using decellularized aortic valve homografts (DAHs) for AVR in children and mainly young adults. METHODS: This prospective observational study included all 69 patients (44 males) operated from February 2008 to September 2015, with a mean age of 19...
July 2016: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/26652571/surgery-for-semilunar-valve-regurgitation-during-ventricular-assist-device-support-in-children
#13
Massimo Padalino, Giacomo Bortolussi, Nicola Maschietto, Alvise Guariento, Giovanni Stellin
Semilunar valve regurgitation (SVR) in children on ventricular assist device (VAD) support is a difficult task. Three children with SVR prior or during VAD support, underwent uneventful semilunar valve surgery, and 2 patients were successfully bridged to heart transplantation. We conclude that surgical management of SVR during VAD support in children is feasible with low operative risk, and is mandatory to optimize VAD support while on waiting list.
December 2015: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/26552510/cost-comparison-of-transcatheter-and-operative-pulmonary-valve-replacement-from-the-pediatric-health-information-systems-database
#14
MULTICENTER STUDY
Michael L O'Byrne, Matthew J Gillespie, Russell T Shinohara, Yoav Dori, Jonathan J Rome, Andrew C Glatz
Outcomes for transcatheter pulmonary valve replacement (TC-PVR) and operative pulmonary valve replacement (S-PVR) are excellent. Thus, their respective cost is a relevant clinical outcome. We performed a retrospective cohort study of children and adults who underwent PVR at age ≥ 8 years from January 1, 2011, to December 31, 2013, at 35 centers contributing data to the Pediatric Health Information Systems database to address this question. A propensity score-adjusted multivariable analysis was performed to adjust for known confounders...
January 1, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/26541831/outcome-after-aortic-valve-replacement-in-children-a-systematic-review-and-meta-analysis
#15
REVIEW
Jonathan R G Etnel, Lisa C Elmont, Ebru Ertekin, M Mostafa Mokhles, Helena J Heuvelman, Jolien W Roos-Hesselink, Peter L de Jong, Willem A Helbing, Ad J J C Bogers, Johanna J M Takkenberg
OBJECTIVE: Despite an increasing interest in pediatric aortic valve repair, aortic valve replacement in children may be unavoidable. The evidence on outcome after pediatric aortic valve replacement is limited and usually reported in small case series. This systematic review and meta-analysis aims to provide an overview of reported outcome of pediatric patients after aortic valve replacement. METHODS: A systematic literature search for publications reporting outcome after pediatric aortic valve replacement published between January 1990 and May 2015 was conducted...
January 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/26541279/effect-of-pulmonary-conduit-oversizing-on-hemodynamics-in-children
#16
Simon J Sonntag, Maximilan Kütting, Pejman Farhadi Ghalati, Tim Kaufmann, Jaime Vázquez-Jiménez, Ulrich Steinseifer, Janez Vodiskar
PURPOSE: Implanting the largest valved conduit possible - oversizing - to reconstruct an absent connection from the right ventricle to the pulmonary artery in certain types of congenital heart defects has been suggested as a compensating measure for somatic outgrowth of the patient. However, one effect that has not been investigated yet is the hemodynamic consequence. For this purpose, virtual implantation and flow simulations were conducted in this study. METHODS: To isolate the effects of conduit oversizing on the hemodynamics observed after conduit implantation and outgrowth, calculated wall shear stresses (WSS) of image-based computational fluid dynamic (CFD) simulations were used as indicators...
October 2015: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/26519248/options-for-aortic-valve-replacement-in-children-and-young-adults-okay-doctor-but-which-one-do-you-think-i-should-choose
#17
EDITORIAL
Osman O Al-Radi
No abstract text is available yet for this article.
January 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/26399177/heart-valve-tissue-engineering-how-far-is-the-bedside-from-the-bench
#18
REVIEW
Andres Sanz-Garcia, Jorge Oliver-de-la-Cruz, Vicente Mirabet, Carolina Gandía, Alejandro Villagrasa, Enrique Sodupe, Carmen Escobedo-Lucea
Heart disease, including valve pathologies, is the leading cause of death worldwide. Despite the progress made thanks to improving transplantation techniques, a perfect valve substitute has not yet been developed: once a diseased valve is replaced with current technologies, the newly implanted valve still needs to be changed some time in the future. This situation is particularly dramatic in the case of children and young adults, because of the necessity of valve growth during the patient's life. Our review focuses on the current status of heart valve (HV) therapy and the challenges that must be solved in the development of new approaches based on tissue engineering...
2015: Expert Reviews in Molecular Medicine
https://www.readbyqxmd.com/read/26293756/physiological-growth-remodeling-potential-and-preserved-function-of-a-novel-bioprosthetic-tricuspid-valve-tubular-bioprosthesis-made-of-small-intestinal-submucosa-derived-extracellular-matrix
#19
Farhan Zafar, Robert B Hinton, Ryan A Moore, R Scott Baker, Roosevelt Bryant, Daria A Narmoneva, Michael D Taylor, David L Morales
BACKGROUND: Prosthetic valves currently used in children lack the ability to grow with the patient and often require multiple reoperations. Small intestinal submucosa-derived extracellular matrix (SIS-ECM) has been used successfully as a patch for repair in various tissues, including vessels, valves, and myocardium. OBJECTIVES: This study sought to assess the remodeling potential of a tubular tricuspid valve (TV) bioprosthesis made of SIS-ECM by evaluating its growth, structure, and function in a growing ovine model...
August 25, 2015: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/26238147/long-term-outcomes-and-risk-factors-for-aortic-regurgitation-after-discrete-subvalvular-aortic-stenosis-resection-in-children
#20
Sarah S Pickard, Alon Geva, Kimberlee Gauvreau, Pedro J del Nido, Tal Geva
OBJECTIVES: To characterise long-term outcomes after discrete subaortic stenosis (DSS) resection and to identify risk factors for reoperation and aortic regurgitation (AR) requiring repair or replacement. METHODS: All patients who underwent DSS resection between 1984 and 2009 at our institution with at least 36 months' follow-up were included. Demographic, surgical and echocardiographic data were reviewed. Outcomes were reoperation for recurrent DSS, surgery for AR, death and morbidities, including heart transplant, endocarditis and complete heart block...
October 2015: Heart: Official Journal of the British Cardiac Society
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