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Surgical ventricular reconstruction

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https://www.readbyqxmd.com/read/28329206/precise-moulded-autologous-pericardial-configurations-for-aortic-cusp-reconstruction
#1
Mohammad Bashar Izzat, Khaled Hamzeh, Farouk Almohammad
OBJECTIVES: In order to facilitate surgical repair of complex aortic cusp deformities and restoration of aortic valve competence, new moulds were developed to shape the glutaraldehyde-treated autologous pericardium into precise cusp-like configurations that can be used in aortic cusp reconstruction. METHODS: The new moulds embodied the natural geometry of single aortic cusps, and a series of moulds were made available to correspond with all potential aortic cusp sizes...
February 27, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28329138/small-intestinal-submucosa-tricuspid-valve-tube-graft-shows-growth-potential-remodelling-and-physiological-valve-function-in-a-porcine-model%C3%A2
#2
Diana M Ropcke, Christine Ilkjaer, Marcell J Tjornild, Soren N Skov, Steffen Ringgaard, Vibeke E Hjortdal, Sten L Nielsen
OBJECTIVES: Tricuspid valve reconstruction using small intestinal submucosal extracellular matrix (ECM) designed as a tube graft is possible in severe valve pathology. Using cardiac magnetic resonance imaging (MRI) and digital photograph imaging, valves were evaluated after 6 months in a porcine model. METHODS: Ten 60 kg pigs received a tricuspid valve tube graft. A baseline MRI was performed after 2 weeks ( n  = 8). A follow-up MRI was performed in three of five 6 months' survivors to assess function and haemodynamics of the tricuspid tube graft...
February 27, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28327144/computational-medical-imaging-and-hemodynamics-framework-for-functional-analysis-and-assessment-of-cardiovascular-structures
#3
REVIEW
Kelvin K L Wong, Defeng Wang, Jacky K L Ko, Jagannath Mazumdar, Thu-Thao Le, Dhanjoo Ghista
Cardiac dysfunction constitutes common cardiovascular health issues in the society, and has been an investigation topic of strong focus by researchers in the medical imaging community. Diagnostic modalities based on echocardiography, magnetic resonance imaging, chest radiography and computed tomography are common techniques that provide cardiovascular structural information to diagnose heart defects. However, functional information of cardiovascular flow, which can in fact be used to support the diagnosis of many cardiovascular diseases with a myriad of hemodynamics performance indicators, remains unexplored to its full potential...
March 21, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28276717/rv-to-pa-conduits-impact-of-transcatheter-pulmonary-valve-replacement-in-adults-a-national-register-study
#4
Kristofer Skoglund, Gunnar Svensson, Ulf Thilén, Mikael Dellborg, Peter Eriksson
OBJECTIVE: The use of a conduit is an established surgical method for reconstruction of the right ventricular outflow tract in congenital heart disease; however, its limited durability makes reintervention almost inevitable. We studied the trends in new implantation, reoperation, and transcatheter pulmonary valve replacement (TPVR) from a Swedish national perspective. DESIGN AND RESULTS: The Swedish registry of congenital heart disease (SWEDCON) was used to collect data...
February 15, 2017: Scandinavian Cardiovascular Journal: SCJ
https://www.readbyqxmd.com/read/28260150/importance-of-multidisciplinary-management-for-pulmonary-atresia-ventricular-septal-defect-major-aorto-pulmonary-collateral-arteries-and-completely-absent-central-pulmonary-arteries
#5
Takaya Hoashi, Satoshi Yazaki, Koji Kagisaki, Masataka Kitano, Masatoshi Shimada, Isao Shiraishi, Hajime Ichikawa
BACKGROUND: To review long-term clinical outcomes for pulmonary atresia, ventricular septal defect (PA/VSD), major aorto-pulmonary collateral arteries (MAPCAs) and completely absent central pulmonary arteries (cPAs). METHODS: Of all 120 surgically treated patients with PA/VSD, MAPCAs between 1981 and 2011, 15 patients (12.5%) with completely absent cPAs were enrolled. The median age at initial surgery was 3.8 ± 4.9 years old (range 0.1-17.6) and 3.5 (2-6)...
March 4, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28248409/immediate-and-long-term-outcomes-of-percutaneous-transcatheter-pulmonary-valve-implantation
#6
Roland Fiszer, Paweł Dryżek, Małgorzata Szkutnik, Sebastian Góreczny, Alexandra Krawczuk, Jadwiga Moll, Tomasz Moszura, Szymon Pawlak, Jacek Białkowski
BACKGROUND: Transcutaneous pulmonary valve replacement (TPVR) has become an alternative to heart surgery for patients after previous right ventricular outflow tract (RVOT) or pulmonary artery (PA) surgical interventions. The objective was to present immediate and long-term outcomes of transcutaneous pulmonary valve replacement. METHODS: Between 06/2009 and 06/2016, 46 patients underwent TPVR. Initial diagnoses included tetralogy of Fallot, common arterial trunk, transposition of great arteries post Rastelli correction, left ventricle outflow obstruction after Ross operation, pulmonary atresia, and isolated dysplastic pulmonary valve stenosis...
March 1, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28221263/use-of-model-based-iterative-reconstruction-to-improve-detection-of-congenital-cardiovascular-anomalies-in-infants-undergoing-free-breathing-computed-tomographic-angiography
#7
Seth Kligerman, Ferdia Bolster, Jason Mitchell, Travis Henry, Jean Jeudy, Charles S White
PURPOSE: The aim of the study was to assess the detection of congenital cardiovascular anomalies (congenital heart disease) in neonates and infants using model-based iterative reconstruction (MBIR) algorithm compared with hybrid iterative reconstruction (HIR) and filtered back projection (FBP) reconstructions on axial computed tomography (CT) performed at minimum scanner dose. MATERIALS AND METHODS: Over 1 year, all CT angiographies performed in infants below 3 months of age with congenital heart disease were assessed retrospectively...
March 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28218213/surgical-treatment-of-double-outlet-right-ventricle-complicated-by-pulmonary-hypertension
#8
Qing-Yu Wu, Dong-Hai Li, Hong-Yin Li, Ming-Kui Zhang, Zhong-Hua Xu, Hui Xue
BACKGROUND: Double outlet right ventricle (DORV) is a group of complex congenital heart abnormalities. Preoperative pulmonary hypertension (PH) is considered an important risk factor for early death during the surgical treatment of DORV. The aim of this study was to report our experience on surgical treatment of DORV complicated by PH. METHODS: From June 2004 to November 2016, 61 patients (36 males and 25 females) aged 2 weeks to 26 years (median: 0.67 years and interquartile range: 0...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28154006/sudden-cardiac-death-in-patients-with-ischemic-heart-failure-undergoing-coronary-artery-bypass-grafting-results-from-the-surgical-treatment-for-ischemic-heart-failure-stich-randomized-clinical-trial
#9
Meena P Rao, Sana M Al-Khatib, Sean Pokorney, Lilin She, Alexander Romanov, Jose C Nicolau, Kerry L Lee, Peter E Carson, Craig H Selzman, Janina Stepinska, John G F Cleland, Wiwun Tungsubutra, Patrice M Desvigne-Nickens, Carla Sueta, Matthias Siepe, Irene M Lang, Arthur M Feldman, Michael Yii, Jean L Rouleau, Eric J Velazquez
BACKGROUND: -The risk of sudden cardiac death (SCD) in patients with heart failure following CABG has not been examined in a contemporary clinical trial of surgical revascularization. This analysis describes the incidence, timing and clinical predictors of SCD after CABG. METHODS: -Patients enrolled in the Surgical Treatment of Ischemic Heart Failure (STICH) trial who underwent CABG with or without surgical ventricular reconstruction (SVR) were included. We excluded patients with prior ICD and those randomized only to medical therapy...
February 2, 2017: Circulation
https://www.readbyqxmd.com/read/28120058/endoscopic-reconstruction-of-csf-pathways-in-ventricular-tumors
#10
Piero Andrea Oppido
Neuroendoscopy is now considered to be a minimally invasive surgical approach for expanding lesions bulging into the ventricle, and it is also considered to be a relevant tool for performing biopsy procedures, fenestration of cystic walls, or for performing tumor removal in selected cases. Furthermore, the use of neuroimaging and the accurate follow-up of brain tumor patients have allowed the documentation of tumoral and pseudotumoral cystic areas that cause the obstruction of cerebrospinal fluid (CSF) pathways...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28119407/blood-flow-competition-after-aortic-valve-bypass-an-evaluation-using-computational-fluid-dynamics
#11
Koji Kawahito, Naoyuki Kimura, Kenji Komiya, Masanori Nakamura, Yoshio Misawa
OBJECTIVES: Aortic valve bypass (AVB) (apico-aortic conduit) remains an effective surgical alternative for patients in whom surgical aortic valve replacement or transcatheter aortic valve implantation is not feasible. However, specific complications include thrombus formation, possibly caused by stagnation arising from flow competition between the antegrade and retrograde flow, but this has not been fully investigated. The aim of this study was to analyse flow characteristics after AVB and to elucidate mechanisms of intra-aortic thrombus using computational fluid dynamics (CFD)...
January 24, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28066610/the-application-of-autologous-pulmonary-artery-in-surgical-correction-of-complicated-aortic-arch-anomaly
#12
Shusheng Wen, Jianzheng Cen, Jimei Chen, Gang Xu, Biaochuan He, Yun Teng, Jian Zhuang
BACKGROUND: In the patients with longer-segment aortic arch hypoplasia or interruption with ventricular septal defect, surgery with homograft vessel or autologous pericardial patch to augment descending aortic arch will not result in adverse reactions caused by end-to-end anastomosis. In this study, we retrospectively analyzed primary experience of surgical correction of complicated aortic arch anomaly with autologous main pulmonary artery. METHODS: From July 2010 to March 2016, the twenty-one cases of aortic arch complex anomalies were reconstructed with autologous main pulmonary artery...
November 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28056256/-strategies-for-surgical-treatment-of-ischemic-mitral-incompetence
#13
Z B Qiu, X Chen
Treatment of ischemic mitral incompetence (IMI) is an important problem in cardiovascular surgery, and it is arguing to the best strategies for surgical treatment of IMI. IMI can be quantitative assessment precisely by three-dimensional ultrasonic sound. Perioperative transesophageal echocardiography can acquire detailed information about IMI, but it is possible to underestimate the degree of IMI. The effective mitral regurgitation area at resting are the independently prognosis factor in patients with IMI...
January 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28043454/surgical-techniques-for-repair-of-peripheral-pulmonary-artery-stenosis
#14
Richard D Mainwaring, Frank L Hanley
Peripheral pulmonary artery stenosis (PPAS) is a rare form of congenital heart disease that is most frequently associated with Williams and Alagille syndromes. These patients typically have systemic level right ventricular pressures secondary to obstruction at the lobar, segmental, and subsegmental branches. The current management of patients with PPAS remains somewhat controversial. We have pioneered an entirely surgical approach for the reconstruction of PPAS. This approach initially entailed a surgical patch augmentation of all major lobar branches and effectively reduced the right ventricular pressures by more than half...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28033080/common-arterial-trunk-repair-by-means-of-a-handmade-bovine-pericardial-valved-woven-dacron-conduit
#15
Samuel Ramírez-Marroquín, Pedro José Curi-Curi, Juan Calderón-Colmenero, José Antonio García-Montes, Jorge Luis Cervantes-Salazar
BACKGROUND: Surgical repair of common arterial trunk (CAT) by means of a homograft conduit has become a standard practice. We report our experience in the correction of this heart disease with a handmade bovine pericardial-valved woven Dacron conduit as an alternative procedure to homografts, with a focus on early, mid-term, and long-term results. METHODS: We designed a retrospective study that included 15 patients with a mean age of 1.5 years (range: three months to eight years), who underwent primary repair of simple CAT...
January 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28017577/ebstein-s-anomaly-genetics-clinical-manifestations-and-management
#16
REVIEW
Shi-Min Yuan
Ebstein's anomaly is uncommon. Genetic bases of this congenital heart defect may be related to the mutations in myosin heavy chain 7 and NKX2.5, among others. Asymptomatic patients with Ebstein's anomaly can be conservatively treated and kept under close follow-up, whereas surgical operation is indicated for those patients with evidence of right heart dilation and progressively impaired ventricular systolic function. A biventricular repair consisting of the reconstruction of a competent monocuspid tricuspid valve, right ventriculorrhaphy, subtotal atrial septal defect closure, and aggressive reduction atrioplasty is suitable for most patients, and 1...
November 19, 2016: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/27923685/a-combined-cellular-and-surgical-ventricular-reconstruction-therapeutic-approach-produces-attenuation-of-remodeling-in-infarcted-rats
#17
Michael J Bonios, Maria Anastasiou-Nana, Despina N Perrea, Konstantinos Malliaras
BACKGROUND: Left ventricular reconstruction (LVR) has been shown to provide transient benefits to the LV structure and function of infarcted hearts; however, long-term results have been disappointing as LVR-induced benefits are typically not sustained. We hypothesized that administration of cardiosphere-derived cells (CDCs), which promote myocardial repair and regeneration, may result in long-term preservation of the beneficial effects of LVR in ischemic cardiomyopathy. METHODS: Wistar Kyoto rats underwent myocardial infarction (MI) and two weeks later were randomized into 3 groups: in Group 1 (n=9), LVR was performed by plication of the infarcted apex and CDCs were injected in the infarct border zone (IBZ); group 2 animals (n=9) underwent LVR and received vehicle solution in the IBZ; and Group 3 animals (n=10) were injected with vehicle solution in the IBZ without undergoing LVR...
December 5, 2016: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/27904843/cardiac-surgery-in-africa-a-thirty-five-year-experience-on-open-heart-surgery-in-cote-d-ivoire
#18
Koffi Herve Yangni-Angate, Christophe Meneas, Florent Diby, Manga Diomande, Anicet Adoubi, Yves Tanauh
BACKGROUND: Few centers for open heart surgery (OHS) are in Sub-Saharan Africa. Lack of OHS results is also noted. By reporting our African experience on OHS, the aim of this study was to fill the gap. METHODS: It is a retrospective study on 2,612 patients who were subject to an OHS between 1978 and 2013. Data were collected from demographical, clinical, investigative studies, surgical and outcomes parameters. RESULTS: There were 1,475 cases of rheumatic heart diseases (RHD), 126 endomyocardial fibrosis (EMF), 741 congenital heart diseases (CHDs) and 270 various affections...
October 2016: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/27866675/hemodynamics-of-patient-specific-aorta-pulmonary-shunt-configurations
#19
Senol Piskin, H Firat Altin, Okan Yildiz, Ihsan Bakir, Kerem Pekkan
Optimal hemodynamics in aorta-pulmonary shunt reconstruction is essential for improved post-operative recovery of the newborn congenital heart disease patient. However, prior to in vivo execution, the prediction of post-operative hemodynamics is extremely challenging due to the interplay of multiple confounding physiological factors. It is hypothesized that the post-operative performance of the surgical shunt can be predicted through computational blood flow simulations that consider patient size, shunt configuration, cardiac output and the complex three-dimensional disease anatomy...
January 4, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/27862075/minimally-invasive-implantation-of-heartware-assist-device-and-simultaneous-tricuspid-valve-reconstruction-through-partial-upper-sternotomy
#20
Julia Hillebrand, Andreas Hoffmeier, Tonny Djie Tiong Tjan, Juergen R Sindermann, Christoph Schmidt, Sven Martens, Mirela Scherer
Left ventricular assist device (LVAD) implantation is a well-established therapy to support patients with end-stage heart failure. However, the operative procedure is associated with severe trauma. Third generation LVADs like the HeartWare assist device (HeartWare, Inc., Framingham, MA, USA) are characterized by enhanced technology despite smaller size. These devices offer new minimally invasive surgical options. Tricuspid regurgitation requiring valve repair is frequent in patients with the need for mechanical circulatory support as it is strongly associated with ischemic and nonischemic cardiomyopathy...
November 8, 2016: Artificial Organs
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