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https://www.readbyqxmd.com/read/28527317/fully-automatic-segmentation-of-left-ventricular-anatomy-in-3-d-lge-mri
#1
Tanja Kurzendorfer, Christoph Forman, Michaela Schmidt, Christoph Tillmanns, Andreas Maier, Alexander Brost
The current challenge for electrophysiology procedures, targeting the left ventricle, is the localization and qualification of myocardial scar. Late gadolinium enhanced magnetic resonance imaging (LGE-MRI) is the current gold standard to visualize regions of myocardial infarction. Commonly, a stack of 2-D images is acquired of the left ventricle in short-axis orientation. Recently, 3-D LGE-MRI methods were proposed that continuously cover the whole heart with a high resolution within a single acquisition. The acquisition promises an accurate quantification of the myocardium to the extent of myocardial scarring...
May 8, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28526502/hemodynamic-parameters-predict-adverse-outcomes-following-biventricular-conversion-with-single-ventricle-palliation-takedown
#2
Melissa A Herrin, David Zurakowski, Christopher W Baird, Puja Banka, Jesse J Esch, Pedro J Del Nido, Sitaram M Emani
OBJECTIVE: Patients with a borderline left ventricular hypoplasia in the hypoplastic left heart syndrome variant or an unbalanced atrioventricular canal who undergo initial single-ventricle palliation may be candidates for biventricular (BiV) conversion following left ventricle (LV) recruitment procedures. We investigated associations among preoperative parameters and postoperative outcomes in patients undergoing BiV conversion. METHODS: We performed a retrospective review of patients who underwent BiV conversion to determine variables associated with clinical outcomes...
April 11, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28525920/torsade-de-pointes-arrhythmias-arise-at-the-site-of-maximal-heterogeneity-of-repolarization-in-the-chronic-complete-atrioventricular-block-dog
#3
Albert Dunnink, Thom R G Stams, Alexandre Bossu, Veronique M F Meijborg, Jet D M Beekman, Sofieke C Wijers, Jacques M T De Bakker, Marc A Vos
Aims: The chronic complete atrioventricular block (CAVB) dog is highly sensitive for drug-induced torsade de pointes (TdP) arrhythmias. Focal mechanisms have been suggested as trigger for TdP onset; however, its exact mechanism remains unclear. In this study, detailed mapping of the ventricles was performed to assess intraventricular heterogeneity of repolarization in relation to the initiation of TdP. Methods and results: In 8 CAVB animals, 56 needles, each containing 4 electrodes, were inserted in the ventricles...
May 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28523862/transatlantic-medical-consultation-and-second-opinion-in-pediatric-cardiology-has-benefit-past-patient-care-a-case-study-in-videoconferencing
#4
Lubica Kovacikova, Martin Zahorec, Peter Skrak, Brian D Hanna, R Lee Vogel
BACKGROUND: Telemedicine is a rapidly evolving form of modern information and communication technology used to deliver clinical services and educational activities. OBJECTIVE: The aim of this article is to report and analyze our experience with transatlantic consultation via videoconferencing in pediatric cardiology. METHODS: In February, 2013, videoconferencing project was launched between a medium-volume pediatric cardiac center in Bratislava, Slovakia and subspecialty experts from a high-volume pediatric cardiac program at The Children's Hospital of Philadelphia (CHOP), USA...
May 19, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28521020/mid-term-outcomes-in-unbalanced-complete-atrioventricular-septal-defect-role-of-biventricular-conversion-from-single-ventricle-palliation%C3%A2
#5
Meena Nathan, Sitaram Emani, Rinske IJsselhof, Hua Liu, Kimberlee Gauvreau, Pedro Del Nido
OBJECTIVES: Management strategy for unbalanced complete atrioventricular septal defects (CASVSDs) includes single-ventricle (SV) palliation and primary or staged biventricular (BiV) repair. More recently, BiV conversion (BiVC) from SV palliation and staged BiV recruitment (BiVR) have also been advocated. This study assesses mid-term outcomes in patients with unbalanced CASVSDs according to management strategy. METHODS: Consecutive patients with unbalanced CASVSDs who underwent surgery at a tertiary care centre from January 2000 to February 2016 with institutional review board approval...
May 18, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28508510/impaired-atrioventricular-transport-in-patients-with-transposition-of-the-great-arteries-palliated-by-atrial-switch-and-preserved-systolic-right-ventricular-function-a-magnetic-resonance-imaging-study
#6
Magalie Ladouceur, Nadjia Kachenoura, Gilles Soulat, Emilie Bollache, Alban Redheuil, Michel Azizi, Christophe Delclaux, Gilles Chatellier, Pierre Boutouyrie, Laurence Iserin, Damien Bonnet, Elie Mousseaux
OBJECTIVES: We aimed (1) determine if systemic right ventricle filling parameters influence systemic right ventricle stroke volume in adult patients with D-transposition of the great arteries (D-TGA) palliated by atrial switch, using cardiac magnetic resonance imaging and echocardiography, and (2) to study relationship of these diastolic parameters with exercise performance and BNP, in patients with preserved systolic systemic right ventricle function. DESIGN: Single-center, cross-sectional, prospective study...
May 16, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28507833/does-hemodynamic-guided-heart-failure-management-reduce-hospitalization-a-systematic-review
#7
REVIEW
Abdul M Minhas, Saba Ahmed, Muhammad S Khan, Kaneez Fatima, Muhammad N Anwar, Jonathan Constantin
Heart failure (HF) is a pressing health concern as the expense of hospitalization financially burdens the health care system. Hemodynamic monitoring has the potential to detect increases in intracardiac filling pressures weeks before clinical deterioration; hence, preliminary findings of volume overload with the use of these devices may prevent the progression of disease and lead to a reduction in HF-associated hospitalizations. We extensively searched PubMed, Ovid SP, Embase, and Cochrane databases to identify all the possible studies that assess the effect of hemodynamic monitoring on hospitalizations in HF patients...
April 13, 2017: Curēus
https://www.readbyqxmd.com/read/28501374/the-effect-of-the-superior-cavopulmonary-anastomosis-on-ventricular-remodeling-in-infants-with-single-ventricle
#8
Renee Margossian, Victor Zak, Amanda J Shillingford, Anthony M Hlavacek, James F Cnota, Michael D Puchalski, Jami C Levine, Brian W McCrindle, Meryl S Cohen, Karen Altmann, Piers C Barker, Daphne T Hsu, Steven D Colan
BACKGROUND: Infants with single ventricular physiology have volume and pressure overload that adversely affect ventricular mechanics. The impact of superior cavopulmonary anastomosis (SCPA) on single left ventricles versus single right ventricles is not known. METHODS: As part of the Pediatric Heart Network placebo-controlled trial of enalapril in infants with single ventricular physiology, echocardiograms were obtained before SCPA and at 14 months and analyzed in a core laboratory...
May 10, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28500137/outcomes-after-decompression-of-the-right-ventricle-in-infants-with-pulmonary-atresia-with-intact-ventricular-septum-are-associated-with-degree-of-tricuspid-regurgitation-results-from-the-congenital-catheterization-research-collaborative
#9
Christopher J Petit, Andrew C Glatz, Athar M Qureshi, Ritu Sachdeva, Shiraz A Maskatia, Henri Justino, David J Goldberg, Namrita Mozumdar, Wendy Whiteside, Lindsay S Rogers, George T Nicholson, Courtney McCracken, Mike Kelleman, Bryan H Goldstein
BACKGROUND: Outcomes after right ventricle (RV) decompression in infants with pulmonary atresia with intact ventricular septum vary widely. Descriptions of outcomes are limited to small single-center studies. METHODS AND RESULTS: Neonates undergoing RV decompression for pulmonary atresia with intact ventricular septum were included from 4 pediatric centers. Primary end point was reintervention post-RV decompression; secondary end points included circulation type at latest follow-up...
May 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28486624/ventricular-assist-device-support-in-patients-with-single-ventricles-the-melbourne-experience%C3%A2
#10
Chin L Poh, Roberto Chiletti, Diana Zannino, Christian Brizard, Igor E Konstantinov, Stephen Horton, Johnny Millar, Yves d'Udekem
OBJECTIVES: The capacity and limitations of ventricular assist device (VAD) support in single-ventricle physiology remains poorly understood. We aimed to review our experience in the use of VAD support in the single-ventricle circulation to determine its feasibility in this population. METHODS: We reviewed our experience with VAD support in patients with single ventricles over the past 25 years. Fifty-seven patients received 64 runs of VAD support between 1990 and 2015 at a median age of 13 days [interquartile range (IQR) 4...
May 8, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28479938/statistical-shape-modeling-for-cavopulmonary-assist-device-development-variability-of-vascular-graft-geometry-and-implications-for-hemodynamics
#11
Jan L Bruse, Giuliano Giusti, Catriona Baker, Elena Cervi, Tain-Yen Hsia, Andrew M Taylor, Silvia Schievano
Patients born with a single functional ventricle typically undergo three-staged surgical palliation in the first years of life, with the last stage realizing a cross-like total cavopulmonary connection (TCPC) of superior and inferior vena cavas (SVC and IVC) with both left and right pulmonary arteries, allowing all deoxygenated blood to flow passively back to the lungs (Fontan circulation). Even though within the past decades more patients survive into adulthood, the connection comes at the prize of deficiencies such as chronic systemic venous hypertension and low cardiac output, which ultimately may lead to Fontan failure...
June 2017: Journal of Medical Devices
https://www.readbyqxmd.com/read/28473116/elevated-mitral-valve-pressure-gradient-after-mitraclip-implantation-deteriorates-long-term-outcome-in-patients-with-severe-mitral-regurgitation-and-severe%C3%A2-heart-failure
#12
Michael Neuss, Thomas Schau, Akihiro Isotani, Markus Pilz, Maren Schöpp, Christian Butter
OBJECTIVES: This single-center study was performed to analyze the effect of an increased transvalvular gradient after the MitraClip (MC) (Abbott Laboratories, Abbott Park, Illinois) procedure on patient outcome during follow-up. BACKGROUND: Percutaneous transcatheter repair of the mitral valve with the MC device has been established as a novel technique for patients with severe mitral regurgitation and high surgical risk. This study investigated the influence of an increased pressure gradient after MC implantation on the long-term outcome of patients...
May 8, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28472306/neuro-developmental-outcome-in-single-ventricle-patients-is-the-norwood-procedure-a-risk-factor
#13
Ina Rotermann, Jana Logoteta, Janine Falta, Philip Wegner, Olaf Jung, Peter Dütschke, Jens Scheewe, Hans-Heiner Kramer, Jan Hinnerk Hansen
OBJECTIVES: Complex neonatal surgery is considered a risk factor for neuro-developmental impairment in single-ventricle patients. Neuro-developmental outcome was compared between preschool-aged Fontan patients who underwent a Norwood procedure and single-ventricle patients not requiring neonatal surgery with cardiopulmonary bypass. METHODS: Verbal, performance and full-scale intelligence quotient (IQ) were evaluated with the Wechsler Preschool and Primary Scale of Intelligence...
May 2, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28471977/clinical-characteristics-and-outcomes-of-left-ventricular-pseudoaneurysm-a-retrospective-study-in-a-single-center-of-china
#14
Xu Meng, Yan-Kun Yang, Kun-Qi Yang, Ying Zhang, Pei-Pei Lu, Peng Fan, Li-Hong Ma, Xian-Liang Zhou
Left ventricular (LV) pseudoaneurysm is a fatal and rare condition with a high risk of rupture. The symptoms are nonspecific and diagnosis is often delayed. The purpose of this study is to analysis a series of cases in our institution.Between March 2009 and April 2016, 10 patients (5 males and 5 females) with LV pseudoaneurysm were retrospectively enrolled. Clinical information, diagnostic imaging modalities, treatment, and outcomes were evaluated.The mean age was 58.2 ± 11.0 years (28-71 years). The common symptoms were chest pain (3 cases), dyspnea (3 cases), and syncope (2 cases)...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28461021/pediatric-fontan-patients-are-at-risk-for-myocardial-fibrotic-remodeling-and-dysfunction
#15
Atsuko Kato, Eugénie Riesenkampff, Deane Yim, Shi-Joon Yoo, Mike Seed, Lars Grosse-Wortmann
BACKGROUND: Patients with single ventricle (SV) circulations are at risk for ventricular dysfunction. This study investigates whether there is evidence of increased myocardial fibrosis and myocardial dysfunction in children after the Fontan operation. METHODS: Consecutive children after the Fontan operation who underwent cardiac magnetic resonance (CMR) T1 relaxometry with a modified look-locker inversion recovery approach were included in this retrospective study...
April 22, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28459162/myocardial-connexin-43-is-up-regulated-in-response-to-acute-cardiac-injury-in-rats
#16
Csilla Viczenczova, Branislav Kura, Kiranj K Chaudagar, Barbara Bacova, Tamara Benova, Miroslav Barancik, Vladimir Knezl, Táňa Ravingerová, Narcis Tribulova, Jan Slezak
We aimed to explore whether myocardial intercellular channel protein connexin-43 (Cx43) along with PKCε and MMP-2 might be implicated in responses to acute cardiac injury induced by two distinct sub-lethal interventions in Wistar rats. Animals underwent either single chest irradiation at dose of 25 Gy or subcutaneous injection of isoproterenol (ISO, 120 mg/kg) and were compared with untreated controls. Forty-two days post-interventions, the hearts were excised and left ventricles were used for analysis. Findings showed an increase of total as well as phosphorylated forms of myocardial Cx43 regardless the type of interventions...
April 29, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28456741/endoscopic-trans-septal-trans-caval-inter-forniceal-approach-to-the-posterior-third-ventricle-in-presence-of-cavum-septum-pellucidum
#17
Jonathan Roth, Assaf Berger, Shlomi Constantini
INTRODUCTION: Posterior third ventricular lesions often cause obstructive hydrocephalus. Thus, a combined endoscopic third ventriculostomy (ETV) and endoscopy biopsy are often the first treatment. However, the trajectories for both procedures may significantly differ, necessitating two entry points, or a combined rigid-flexible technique. METHODS: We describe the utilization of a large cavum septum pellucidum (CSP) as a route for performing the biopsy. RESULTS: Using a rigid endoscope and a single trajectory, we were able to perform a trans foraminal ETV, and a trans-septal, trans-caval, inter-forniceal biopsy of the tumor...
April 26, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28456482/hospital-costs-and-cost-implications-of-co-morbid-conditions-for-patients-with-single-ventricle-in-the-period-through-to-fontan-completion
#18
Li Huang, Kim M Dalziel, Chris Schilling, David S Celermajer, John J McNeil, David Winlaw, Tom Gentles, Dorothy J Radford, Michael Cheung, Andrew Bullock, Gavin R Wheaton, Robert N Justo, Lisa A Selbie, Victoria Forsdick, Karin Du Plessis, Yves d'Udekem
BACKGROUND: Patients undergoing palliative surgeries for single-ventricle conditions are affected by multiple comorbidities or non-cardiac conditions. The prevalence, costs and the cost implications of these conditions have not been assessed. METHODS: Administrative costing records from four hospitals in Australia and New Zealand were linked with the Fontan registry database to analyze the inpatient resource use for co-morbid or non-cardiac conditions. Inpatient costing records from the birth year through to Fontan completion were available for 156 patients...
April 20, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28453807/attrition-in-patients-with-single-ventricle-and-trisomy-21-outcomes-after-a-total-cavopulmonary-connection
#19
Anastasios C Polimenakos, Sujata Subramanian, Chawki ElZein, Michel N Ilbawi
OBJECTIVES: Data are limited regarding the management of children with trisomy 21 (T21) syndrome and a functional single ventricle (FSV). We evaluated patients with T21 and a FSV who had a total cavopulmonary connection (TCPC). METHODS: From September 1999 to August 2012, 139 patients with a FSV underwent a TCPC. Sixty-five had unbalanced atrioventricular septal defect. Thirteen had T21. Three (of 13) had heterotaxy syndrome. The mean age at the Fontan operation was 27...
May 1, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28453799/early-to-mid-term-results-after-total-cavopulmonary-connection-performed-in-the-second-decade-of-life
#20
Alexandre Metras, Virginie Fouilloux, Mohammed Al-Yamani, Xavier Roques, Loic Macé, Jean-Benoît Thambo, Dominique Metras, Bernard Kreitmann, François Roubertie
OBJECTIVES: Total cavopulmonary connection (TCPC) performed in the second decade of life has rarely been studied. Thus, we investigated (bicentric study) early and late morbidity and mortality following completion of TCPC in these patients. METHODS: From January 1999 to June 2014, 63 patients (14.5 ± 2.9 years) underwent TCPC (extracardiac conduit). Palliation before completion was an isolated bidirectional cavopulmonary shunt (BCPS) in 3 patients or BCPS associated with additional pulmonary blood flow (APBF) that was either antegrade (Group 1) in 38 (63%) or retrograde (Group 2) in 22 (37%)...
May 1, 2017: Interactive Cardiovascular and Thoracic Surgery
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