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Right ventricular outflow tract

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https://www.readbyqxmd.com/read/28097316/evaluation-of-structural-progression-in-arrhythmogenic-right-ventricular-dysplasia-cardiomyopathy
#1
Thomas P Mast, Cynthia A James, Hugh Calkins, Arco J Teske, Crystal Tichnell, Brittney Murray, Peter Loh, Stuart D Russell, Birgitta K Velthuis, Daniel P Judge, Dennis Dooijes, Ryan J Tedford, Jeroen F van der Heijden, Harikrishna Tandri, Richard N Hauer, Theodore P Abraham, Pieter A Doevendans, Anneline S J M Te Riele, Maarten J Cramer
Importance: Considerable research has described the arrhythmic course of arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C). However, objective data characterizing structural progression, such as ventricular enlargement and cardiac dysfunction, in ARVD/C are relatively scarce. Objectives: To define the extent of structural progression, identify determinants of structural progression, and determine the association between structural progression and electrocardiographic (ECG) changes in patients with ARVD/C...
January 11, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28090262/rapidly-growing-right-ventricular-outflow-tract-mass-in-patient-with-sarcomatoid-renal-cell-carcinoma
#2
Jongmin Hwang, Yong Hyun Park, Kyung Un Choi, Jeong Su Kim, Ki Won Hwang, Sang Hyun Lee, Min Ku Chon, Soo Yong Lee, Dae Sung Lee
Cardiac metastasis from renal cell carcinoma (RCC) without inferior vena cava (IVC) involvements is extremely rare with few reported cases. Sarcomatoid RCC with rhabdoid feature is a rare pathologic type of RCC having aggressive behavior due to great metastatic potential. Here, we report a case of rapidly growing cardiac metastasis of RCC which brought on right ventricular outflow tract (RVOT) obstruction without IVC and right atrial involvement in a 61-year-old woman. Cardiac arrest occurred during radical nephrectomy and echocardiography revealed mass nearly obstructing the RVOT which was not recognized by preoperative echocardiography 1 month ago...
December 2016: Journal of Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/28077814/life-threatening-ventricular-arrhythmia-and-brugada-type-st-segment-elevation-associated-with-acute-ischemia-of-the-right-ventricular-outflow-tract
#3
Rena Nakamura, Mitsuhiro Nishizaki, Kiko Lee, Masato Shimizu, Hiroyuki Fujii, Noriyoshi Yamawake, Harumizu Sakurada, Masayasu Hiraoka, Mitsuaki Isobe
BACKGROUND: Brugada-type ECG (Br-ECG) is occasionally observed during acute myocardial ischemia of the right ventricular outflow tract (RVOT). No studies have explored, however, the association of ventricular tachyarrhythmia and development of Br-ECG due to acute ischemia of the RVOT.Methods and Results:The study included 13 consecutive patients with acute ischemia of the RVOT during coronary catheterization. Patients were divided into 2 groups: those with Br-ECG (group B) and those without (group N)...
January 11, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28077510/mitral-implant-of-the-inovare-transcatheter-heart-valve-in-failed-surgical-bioprostheses-a-novel-alternative-for-valve-in-valve-procedures
#4
Diego Felipe Gaia, Ademir Massarico Braz, Matheus Simonato, Danny Dvir, João Roberto Breda, Gustavo Calado Ribeiro, Carolina Baeta Ferreira, José Augusto Marcondes Souza, Enio Buffolo, José Honório Palma
OBJECTIVES: Reoperative procedure for the treatment of a failed mitral bioprosthesis is associated with considerable risk. In some cases, mortality is high and might contraindicate the benefit of the procedure. The minimally invasive valve-in-valve (ViV) transcatheter mitral valve implant offers an alternative less-invasive approach, reducing morbidity and mortality. The objective of this paper was to evaluate the mitral ViV approach using the Braile Inovare prosthesis. METHODS: The transcatheter balloon-expandable Braile Inovare prosthesis was used in 12 cases...
January 10, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28077181/at-what-age-should-tetralogy-of-fallot-be-corrected
#5
Julien I E Hoffman
Tetralogy of Fallot can be corrected with very low mortality at any age, even in neonates, but this does not necessarily mean that it should be corrected in the neonatal period. Although there are many advantages to early correction, a high proportion of these neonates have residual stenosis or pulmonary regurgitation that impairs ventricular function and may require further surgery or implantation of a pulmonary valve. Before we had the ability to correct this anomaly with low mortality in small children, a variety of palliative procedures had to be performed...
January 12, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28070060/the-brugada-syndrome%C3%A3-from-gene-to-therapy
#6
Antonio Curcio, Giuseppe Santarpia, Ciro Indolfi
It is almost a quarter of century that a pioneering work of 2 researchers named Brugada brought the entire scientific community to understanding the molecular, clinical, and electrophysiological aspects of a distinctive syndrome. It affects mainly young adults with syncope and/or sudden cardiac death caused by polymorphic ventricular tachycardia or ventricular fibrillation in the absence of any sign of cardiac degeneration or alteration. Although the involvement of the epicardial layer of the right ventricular outflow tract, and the requirement of pharmacologic challenge for unveiling concealed forms, have been fully characterized, many areas of uncertainties remain to be elucidated, such as the unpredictable usefulness of programmed ventricular stimulation, the role of radiofrequency catheter ablation for reducing ST-segment elevation, and the value of risk stratification in patients diagnosed with upper displacement of right precordial leads...
January 7, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28062416/blood-flow-patterns-underlie-developmental-heart-defects
#7
Madeline Midgett, Kent L Thornburg, Sandra Rugonyi
Although cardiac malformations at birth are typically associated with genetic anomalies, blood flow dynamics also play a crucial role in heart formation. However, the relationship between blood flow patterns in the early embryo and later cardiovascular malformation has not been determined. We used the chicken embryo model to quantify the extent to which anomalous blood flow patterns predict cardiac defects that resemble those in humans, and found that restricting either the inflow to the heart or the outflow led to reproducible abnormalities with a dose-response type relationship between blood flow stimuli and the expression of cardiac phenotypes...
January 6, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28052583/pulmonary-hypertension-in-advanced-lung-diseases-echocardiography-as-an-important-part-of-patient-evaluation-for-lung-transplantation
#8
Jolanta Nowak, Bartosz Hudzik, Dariusz Jastrze Bski, Jacek T Niedziela, Piotr Rozentryt, Jacek Wojarski, Marek Ochman, Wojciech Karolak, Sławomir Żegleń, Marek Gierlotka, Mariusz Gąsior
INTRODUCTION: Pulmonary hypertension (PH) is common complication in advanced lung disease. Echocardiography provides additional information and may be useful to assess PH probability. OBJECTIVES: The usefulness of combination of well-known echocardiographic parameters in detecting PH in patients with advanced lung disease referred for lung transplantation was evaluated. METHODS: The study population consisted of 37 consecutive patients with idiopathic pulmonary fibrosis (IPF), 20 patients with chronic obstructive pulmonary disease (COPD), and 8 patients with other interstitial lung diseases...
January 4, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28044989/surgical-mitral-valve-replacement-with-melody-valve-in-infants-and-children-the-italian-experience
#9
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 a long experience with the stented bovine jugular vein graft (Melody Valve) in the right ventricular outflow tract, we tested the use of the Melody Valve as a surgical implant in the mitral position in patients with congenital mitral disease. METHODS AND RESULTS: Eight patients, age 3 months to 6.2 years, with congenital MV dysplasia had undergone Melody valve implantation in mitral position between March 2014 and October 2015...
January 3, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28043468/outcomes-of-truncus-arteriosus-repair-in-children-35-years-of-experience-from-a-single-institution
#10
Phillip S Naimo, Tyson A Fricke, Matthew S Yong, Yves d'Udekem, Andrew Kelly, Dorothy J Radford, Andrew Bullock, Robert G Weintraub, Christian P Brizard, Igor E Konstantinov
We evaluated the long-term outcomes following repair of truncus arteriosus (TA) from a single institution. We conducted a retrospective review of children (n = 171) who underwent TA repair between 1979 and 2014. Early mortality rate was 11.7% (20/171). There were 19 late deaths. Most deaths (74%, 29/39) occurred within the first year following surgery. The 1-year mortality rate in 1979-2004 was 18% (25/136) and decreased to 11% (4/35) in 2005-2014. The overall survival rate was 73.6% at 30 years. Multivariate analysis identified postoperative extracorporeal membrane oxygenation (P = 0...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28043463/the-right-ventricular-outflow-tract-reconstruction-a-challenge-in-tetralogy-of-fallot-repair-is-there-a-right-way-of-doing-it-an-art-or-a-science
#11
EDITORIAL
John M Karamichalis
No abstract text is available yet for this article.
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28043462/right-ventricular-outflow-tract-reconstruction-with-a-polytetrafluoroethylene-monocusp-valve-a-20-year-experience
#12
Mohineesh Kumar, Mark W Turrentine, Mark D Rodefeld, Teresa Bell, John W Brown
In patients with tetralogy of Fallot (TOF), pulmonary atresia (PA), and other congenital right ventricular outflow tract (RVOT) malformations, polytetrafluoroethylene (PTFE) monocusp outflow tract patches (MOTP) relieve obstruction and provide pulmonary valve competence. The purpose of this study was to determine whether our PTFE-MOTP was an acceptable short- and mid-term remedy for patients with TOF or PA as assessed by freedom from severe pulmonary regurgitation and freedom from reoperation. From 1994-2014, 171 patients (mean age 1...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28043457/porcine-intestinal-submucosa-cormatrix-for-semilunar-valve-repair-in-children-a-word-of-caution-after-midterm-results
#13
Massimo A Padalino, Biagio Castaldi, Marny Fedrigo, Michele Gallo, Fabio Zucchetta, Vladimiro L Vida, Ornella Milanesi, Annalisa Angelini, Giovanni Stellin
Surgery for congenital valve anomalies in children is a challenging topic. We aim to assess early and late functional outcomes of CorMatrix scaffold after repair of aortic and pulmonary valves (PV) in congenital heart disease in a prospective nonrandomized clinical study on children with congenital aortic (Group 1) or PV (Group 2) disease. Primary endpoints were reoperation or reintervention on semilunar valves and echocardiographic evidence of regurgitation or stenosis greater than mild. Results of PV repair in tetralogy of Fallot were compared with a control group of patients who underwent PV repair with polytetrafluoroethylene...
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
#14
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/28033079/sustained-improvement-in-right-ventricular-chamber-dimensions-10-years-following-xenograft-pulmonary-valve-replacement
#15
Heidi B Schubmehl, Michael F Swartz, Nader Atallah-Yunes, Carol Wittlieb-Weber, Rebecca E Pratt, George M Alfieris
BACKGROUND: The goals following pulmonary valve replacement (PVR) are to optimize right ventricular hemodynamics and minimize the need for subsequent reoperations on the right ventricular outflow tract. We hypothesized PVR using a xenograft valved conduit would result in superior freedom from reoperation with sustained improvement in right ventricular chamber dimensions. METHODS: Xenograft valved conduits placed in patients aged >16 years were reviewed from 2000 to 2010 to allow for a 5-year minimum follow-up...
January 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28031657/risks-factors-for-atrial-septal-defect-occlusion-device-migration
#16
Efrén Martínez-Quintana, Fayna Rodríguez-González
Atrial septal defect (ASD) is one of the most common congenital heart defects requiring procedural intervention. In such cases, transcatheter closure of secundum ASDs has been demonstrated to be safe and effective in both children and adults, with similar success and complication rates to surgery. However, appropriate patient selection and an accurate device selection is mandatory to prevent serious complications such as ventricular arrhythmias, outflow tract obstruction of the left and right ventricle, or ischemic events secondary to the obstruction of blood flow due to device embolization...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28031213/relationship-between-distance-and-change-in-surface-ecg-morphology-during-pacemapping-as-a-guide-to-ablation-of-ventricular-arrhythmias-implications-for-the-spatial-resolution-of-pacemapping
#17
Anthony Li, Joseph Samuel Davis, Jeremiah Wierwille, Keith Herold, Dennis Morgan, Elijah Behr, Stephen Shorofsky, Magdi Saba
BACKGROUND: Pacemapping is used to localize the exit site of ventricular arrhythmia. Although the relationship between distance and change in QRS morphology is its basis, this relationship has not been systematically quantified. METHODS AND RESULTS: Patients (n=68) undergoing ventricular arrhythmia ablation between March 2012 and July 2013 were recruited. Pacemapping was targeted to areas of voltage >0.5 mV. Linear mixed-effects models were constructed of distance against morphology difference measured by the root mean square error sum across all 12 ECG leads (E12)...
January 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28026917/voltage-combined-with-pace-mapping-is-simple-and-effective-for-ablation-of-noninducible-premature-ventricular-contractions-originating-from-the-right-ventricular-outflow-tract
#18
Zefeng Wang, Heping Zhang, Hui Peng, Xuhua Shen, Zhijun Sun, Can Zhao, Ruiqing Dong, Huikuan Gao, Yongquan Wu
BACKGROUND: Premature ventricular contractions (PVCs) from the right ventricular outflow tract (RVOT) can resist conventional mapping strategies. Studies regarding optimal mapping and ablation methods for patients with noninducible RVOT-PVCs are limited. We retrospectively evaluated the efficacy and safety of a novel mapping strategy for these cases: voltage mapping combined with pace mapping. HYPOTHESIS: METHODS: We retrospectively included symptomatic patients (n = 148; 76 males; age, 44...
December 2016: Clinical Cardiology
https://www.readbyqxmd.com/read/28025232/three-dimensional-printing-in-vitro-simulation-of-percutaneous-pulmonary-valve-implantation-in-large-right-ventricular-outflow-tract
#19
Israel Valverde, Fernando Sarnago, Raquel Prieto, Jose Luis Zunzunegui
No abstract text is available yet for this article.
December 26, 2016: European Heart Journal
https://www.readbyqxmd.com/read/28017933/20-years-experience-with-the-ross-operation-in-middle-aged-patients-the-autologous-principle-is-still-alive
#20
Francisco Diniz Affonso da Costa, Daniele Fornazari Colatusso, Eduardo Mendel Balbi Filho, Rafael Marchetti, Andreia Dumsch de Aragon Ferreira, Marise Brenner Affonso da Costa, Joao Gabriel Roderjan, Claudinei Colatusso
OBJECTIVES: Review our long-term results with the Ross operation in middle-aged patients. METHODS: Between 1995 and 2016, 129 consecutive patients (106 males); mean age (47.2 ± 5.2 years) underwent a Ross operation. Right ventricular outflow tract (RVOT) reconstruction was performed with cryopreserved (n = 45) or decellularized allografts (n = 84). Mean follow-up was 8.4 ± 5.3 years (0.1 -: 20.5 years). We analyzed early and late mortality, as well as valve related events and the need for reoperations...
December 25, 2016: Interactive Cardiovascular and Thoracic Surgery
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