keyword
MENU ▼
Read by QxMD icon Read
search

Right ventricular outflow

keyword
https://www.readbyqxmd.com/read/29148206/comparison-of-valvar-and-right-ventricular-function-following-transcatheter-and-surgical-pulmonary-valve-replacement
#1
Wendy F Li, Heidi Pollard, Mohsen Karimi, Jeremy D Asnes, William E Hellenbrand, Veronika Shabanova, Constance G Weismann
OBJECTIVE: Trans-catheter (TC) pulmonary valve replacement (PVR) has become common practice for patients with right ventricular outflow tract obstruction (RVOTO) and/or pulmonic insufficiency (PI). Our aim was to compare PVR and right ventricular (RV) function of patients who received TC vs surgical PVR. DESIGN: Retrospective review of echocardiograms obtained at three time points: before, immediately after PVR, and most recent. PATIENTS: Sixty-two patients (median age 19 years, median follow-up 25 months) following TC (N = 32) or surgical (N = 30) PVR at Yale-New Haven Hospital were included...
November 17, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/29148067/should-theophylline-be-added-to-the-j-wave-syndrome-therapeutic-armamentarium
#2
EDITORIAL
Charles Antzelevitch, Sami Viskin
The substrate for both early repolarization syndrome (ERS) and Brugada syndrome (BrS), the so-called J wave syndromes, has been shown to develop as a consequence of genetic variants causing a loss of function of inward currents such sodium (INa ) and calcium (ICa ) channel currents or a gain of function in outward currents such as the transient outward current (Ito ). These changes in ion channel function result in an outward shift of the balance of currents active during the early phases of the epicardial action potential in the right ventricular outflow tract (RVOT) of the heart in the case BrS and in the inferior left ventricle in the case of ERS...
November 16, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29145303/epicardial-radiofrequency-catheter-ablation-of-brugada-syndrome-with-electrical-storm-during-ventricular-fibrillation-a-case-report
#3
Shufen Jiang, Xiaomeng Yin, Chang Dong, Yunlong Xia, Jinqiu Liu
RATIONALE: Brugada syndrome (BrS) is characterized by ST segment elevation at the J point ≥2 mm in the right precordial electrocardiogram (ECG) leads, in the absence of structural heart disease, electrolyte disturbances, or ischemia. It is a well-described cause of sudden death in young patients, especially in the age of between 30 and 40 years old. Here, we reported an unusual case of electrical storm (ES) of ventricular fibrillation (VF) caused by BrS with complete right bundle-branch block (CRBBB) in a 75-year-old male patient...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29142814/a-membranous-septal-aneurysm-causing-right-ventricular-outflow-tract-obstruction-in-an-adult
#4
Fiorella Privitera, Ines Paola Monte, Antonino Indelicato, Corrado Tamburino
We describe a case of a 69-year-old female referred for the evaluation of exertional dyspnea, with a small membranous ventricular septal defect (VSD) and right ventricle (RV) outflow tract obstruction. Using transthoracic echo was diagnosed VSD with left to right shunting and transesophageal echo (TEE) was used to a better anatomical characterization. TEE showed a perimembranous subaortic VSD that developed a high-velocity flow in RV. Pulmonary valve appears normal and right ventricular infundibular hypertrophy or double-chambered RV was excluded from the study...
October 2017: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/29127709/pulmonary-damage-following-right-ventricular-outflow-tachycardia-ablation-in-a-child-when-electroanatomical-mapping-isn-t-good-enough
#5
Neha Bansal, Daisuke Kobayashi, Peter P Karpawich
A 14-year-old female was referred for severe pulmonary valve insufficiency after undergoing radiofrequency ablation for a right ventricular outflow tract tachycardia that originated in the proximal pulmonary artery at 10 years of age. Clinical records indicated that ablation was guided solely by electrograms and electroanatomical mapping. Due to myocardial tissue extensions, mapping failed to identify the level of the pulmonary valve annulus, which resulted in delivery of energy on the valve proper and into the pulmonary artery...
November 11, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29120021/swiss-adult-congenital-heart-disease-registry-sacher-rationale-design-and-first-results
#6
Daniel Tobler, Markus Schwerzmann, Judith Bouchardy, Reto Engel, Dominik Stambach, Christine Attenhofer Jost, Kerstin Wustmann, Fabienne Schwitz, Tobias Rutz, Harald Gabriel, Hans Peter Kuen, Christoph Auf der Maur, Angela Oxenius, Theresa Seeliger, Bruno Santos Lopes, Francesca Bonassin, Matthias Greutmann, On Behalf Of Sacher
BACKGROUND: In 2013, a prospective registry for adults with congenital heart disease (CHD) was established in Switzerland, providing detailed data on disease characteristics and outcomes: Swiss Adult Congenital HEart disease Registry (SACHER). Its aim is to improve the knowledge base of outcomes in adults with CHD. The registry design and baseline patient characteristics are reported. METHODS: All patients with structural congenital heart defects or hereditary aortopathies, followed-up at dedicated adult CHD clinics, are asked to participate in SACHER...
November 9, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29106546/clinical-validation-of-automatic-local-activation-time-annotation-during-focal-premature-ventricular-complex-ablation-procedures
#7
Juan Acosta, David Soto-Iglesias, Juan Fernández-Armenta, Manuel Frutos-López, Beatriz Jáuregui, Eduardo Arana-Rueda, Marcos Fernández, Diego Penela, Alejandro Alcaine, Lucas Cano, Alonso Pedrote, Antonio Berruezo
Aims: Current navigation systems incorporate algorithms for automatic identification of local activation time (LAT). However, data about their utility and accuracy in premature ventricular complex (PVC) ablation procedures are scarce. This study analyses the accuracy of an algorithmic method based on automatic annotation of the maximal negative slope of the unipolar electrogram within the window demarcated by the bipolar electrogram compared with conventional manual annotation during PVC ablation procedures...
November 2, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29101986/acr-appropriateness-criteria-%C3%A2-multiple-gestations
#8
Phyllis Glanc, David A Nyberg, Nadia J Khati, Sandeep Prakash Deshmukh, Kika M Dudiak, Tara Lynn Henrichsen, Liina Poder, Thomas D Shipp, Lynn Simpson, Therese M Weber, Carolyn M Zelop
Women with twin or higher-order pregnancies will typically have more ultrasound examinations than women with a singleton pregnancy. Most women will have at minimum a first trimester scan, a nuchal translucency evaluation scan, fetal anatomy scan at 18 to 22 weeks, and one or more scans in the third trimester to evaluate growth. Multiple gestations are at higher risk for preterm delivery, congenital anomalies, fetal growth restriction, placenta previa, vasa previa, and velamentous cord insertion. Chorionicity and amnionicity should be determined as early as possible when a twin pregnancy is identified to permit triage of the monochorionic group into a closer surveillance model...
November 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/29100642/medium-term-outcomes-after-implantation-of-expanded-polytetrafluoroethylene-valved-conduit
#9
Yoshio Ootaki, Allison S Welch, Michael J Walsh, Michael D Quartermain, Derek A Williams, Ross M Ungerleider
BACKGROUND: Pulmonary valve replacement is becoming the most frequent congenital heart surgery performed on adolescents and young adults. Numerous surgical options are available, including autologous pericardium, mechanical valves, allografts, and bioprosthetic valves. Each option has limitations with durability and freedom from reintervention for stenosis or insufficiency, particularly in the pediatric population. The purpose of this study was to analyze our uniquely designed, expanded polytetrafluoroethylene (ePTFE) valved conduit (VC) for right ventricular outflow tract reconstruction...
November 1, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29089263/successful-balloon-angioplasty-of-pulmonary-artery-stenosis-in-two-cats%C3%A2-and%C3%A2-associated-complications
#10
Donald P Schrope, William D Tyrrell, Kristin A Jacob
Two cats (2.5 months and 8 months old) were each evaluated due to a loud systolic murmur, and each was diagnosed with severe pulmonary artery stenosis at the bifurcation of the main pulmonary artery. Echocardiograms confirmed significant right atrial dilation and right ventricular dilation and/or hypertrophy that was progressive in one cat. Atenolol was initiated and the cats were referred for interventional therapy. Balloon angioplasty was performed via the jugular vein. In case 1, the pressure gradient across the stenosis was reduced from 169...
October 28, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/29082550/reversed-rivero-carvallo-s-sign-confirmed-by-blood-flow-analysis-using-cardiac-magnetic-resonance-imaging-in-a-patient-with-straight-back-syndrome
#11
Makiko Suto, Shumpei Mori, Tatsuya Nishii, Yu Izawa, Shinsuke Shimoyama, Hiroki Konishi, Kensuke Matsumoto, Hidekazu Tanaka, Ken-Ichi Hirata
An asymptomatic 45-year-old man was referred to our hospital for detailed evaluation of a systolic ejection murmur. The intensity of the murmur increased on deep expiration and decreased on deep inspiration, showing so-called reversed Rivero-Carvallo's sign. Using cardiac magnetic resonance imaging, we demonstrated a characteristic respiratory-induced change in peak flow velocity in the right ventricular outflow tract, which was the basic mechanism of the reversed Rivero-Carvallo's sign in a case with straight back syndrome...
October 29, 2017: Echocardiography
https://www.readbyqxmd.com/read/29082523/ventricular-mechanics-after-repair-of-subarterial-and-perimembranous-vsds
#12
Sit-Yee Kwok, Susanna So-Shan Yeung, Vivian Wing-Yi Li, Yiu-Fai Cheung
BACKGROUND: Emerging data suggest impaired biventricular function in adults late after repair of ventricular septal defect (VSD). We assessed and compared right (RV) and left ventricular (LV) mechanics in adolescents and adults after surgical closure of doubly committed subarterial and perimembranous VSDs. METHODS: A total of 75 subjects were studied: 29 patients after subarterial VSD repair (group I), 17 patients after perimembranous VSD repair (group II) and 29 age-matched controls (group III)...
October 30, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29079046/global-and-regional-right-ventricular-function-assessed-by-novel-three-dimensional-speckle-tracking-echocardiography
#13
Tomoko Ishizu, Yoshihiro Seo, Akiko Atsumi, Yumiko Oishi Tanaka, Masayoshi Yamamoto, Tomoko Machino-Ohtsuka, Hitoshi Horigome, Kazutaka Aonuma, Yasushi Kawakami
BACKGROUND: Accurate assessment of global and regional right ventricular (RV) systolic function is challenging. The aims of this study were to confirm the reliability and feasibility of a three-dimensional (3D) speckle-tracking echocardiography (STE) system, using comparison with cardiac magnetic resonance imaging (CMR), and to assess the contribution of regional RV function to global function. METHODS: In a retrospective, cross-sectional study setting, RV volumetric data were studied in 106 patients who were referred for both CMR and 3D echocardiography within 1 month...
October 24, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29071756/novel-electrophysiological-criteria-for-septal-ventricular-outflow-tract-tachycardias-requiring-a-sequential-bilateral-ablation
#14
Chin-Yu Lin, Fa-Po Chung, Yenn-Jiang Lin, Shih-Lin Chang, Li-Wei Lo, Yu-Feng Hu, Jo-Nan Liao, Ta-Chuan Tuan, Tze-Fan Chao, Yao-Ting Chang, Yun-Yu Chen, Abigail Louise D Te, Shinya Yamada, Ling Kuo, Jennifer Jeanne B Vicera, Ting-Yung Chang, Hoang Quang Minh, Simon Salim, Ting-Chung Huang, Shih-Ann Chen
BACKGROUND: Septal ventricular outflow tract ventricular arrhythmias (OT-VAs) are defined as septal origin VAs from the right ventricular or left ventricular OT. Patients with septal OT-VAs may require a sequential bilateral OT ablation. This study aimed to evaluate the electrophysiological characteristics and ablation outcome in patients with septal OT-VAs. METHODS: We retrospectively analyzed the electrocardiography and electrophysiological parameters in 96 patients (mean age 49 ± 15 years, 49 male) undergoing bilateral activation mapping before catheter ablation of idiopathic septal OT-VAs...
October 26, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29068129/bicaval-medtronic-melody-valve-implantation-for-treatment-of-severe-mitral-regurgitation-following-the-mustard-repair-a-case-report
#15
Zachary L Steinberg, Brian H Morray, Thomas K Jones
We present a case of successful bicaval Melody valve implantation to treat severe mitral regurgitation in a 44-year-old man with d-transposition of the great arteries, repaired via a Mustard operation. The patient sustained injury to the anterior mitral valve leaflet during laser extraction of a ventricular pacing lead resulting in acute, severe, symptomatic mitral regurgitation. The presence of systemic venous baffles of similar caliber to right ventricular outflow tract conduits allowed for implantation of Melody valves within each baffle...
October 25, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29067078/tetralogy-of-fallot-repair-in-patients-presenting-after-infancy-a-single-surgeon-experience
#16
Tariq Waqar, Muhammad Usman Riaz, Tania Mahar
OBJECTIVE: To determine the early surgical outcomes of Tetralogy of Fallot (TOF) repair in children and young adults operated after the age of one year. METHODS: In this retrospective study, 307 cases of primary repair of Tetralogy of Fallot were done between September 2012 to February 2017, at CPE Institute of cardiology, Multan. Out of 307 operated patients, 4 (1.3%) patients had previous modified Blalock Taussig shunts, 2 (0.6%) associated ASD with TOF, 3 (0...
July 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29062384/asymptomatic-giant-lipoma-of-the-right-ventricular-outflow-tract-a-case-report
#17
Fariba Bayat, Zargham Hossein Ahmadi, Neda Behzadnia, Atosa Dorudinia, Alireza Jahangirifard
Cardiac lipomas are extremely rare tumors of the heart. They are usually symptomatic and rarely may be found incidentally in autopsies. Here we describe a 23-year-old healthy man, in whose physical examination for employment a murmur was found incidentally. Transthoracic and then transesophageal echocardiographic examination showed a 4-cm oval-shaped mass in the right ventricular outflow tract. He underwent elective surgery, during which the tumor was removed under cardiopulmonary bypass and aortic-cross clamping via right atriotomy...
July 2017: Journal of Tehran Heart Center
https://www.readbyqxmd.com/read/29061637/unique-developmental-trajectories-and-genetic-regulation-of-ventricular-and-outflow-tract-progenitors-in-the-zebrafish-second-heart-field
#18
Noelle Paffett-Lugassy, Natasha Novikov, Spencer Jeffrey, Maryline Abrial, Burcu Guner-Ataman, Srinivasan Sakthivel, Caroline E Burns, C Geoffrey Burns
During mammalian embryogenesis, cardiac progenitor cells constituting the second heart field (SHF) give rise to the right ventricle and primitive outflow tract (OFT), the latter of which is particularly vulnerable to developmental malformations that underlie common congenital heart defects. In zebrafish, SHF progenitors produce half of the single ventricle's myocardium and contribute significantly to the OFT. Previous lineage tracing and mutant analyses suggested that SHF ventricular and OFT progenitors co-migrate to the arterial pole of the zebrafish heart tube soon after their specification in the nkx2...
October 23, 2017: Development
https://www.readbyqxmd.com/read/29060114/an-in-vitro-study-of-the-influence-of-monocusp-patch-size-on-the-hemodynamics-for-reconstructing-right-ventricular-outflow-tract-in-tetralogy-of-fallot
#19
Wentao Feng, Jie Yao, Xianda Yang, Zhaowei Chu, Meng Guo, Lizhen Wang, Yubo Fan
For relief of right ventricular outflow tract obstruction in the operative treatment of tetralogy of Fallot and other complex congenital heart disease, it is often necessary to perform transannular monocusp patch to prevent right ventricular pressure overload and reduce pulmonary regurgitation. But the the geometric relationship between a monocusp patch length and the size of RVOT is not well defined. Five 20 mm sized monocusp patches were tested in simulated RVOTs which sized from 18 mm to 22 mm at 1 mm interval, respectively...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29050815/right-ventricular-outflow-tract-reintervention-after-primary-tetralogy-of-fallot-repair-in-neonates-and-young-infants
#20
Shyamasundar Balasubramanya, David Zurakowski, Michele Borisuk, Aditya K Kaza, Sitaram M Emani, Pedro J Del Nido, Christopher W Baird
OBJECTIVE: To assess the outcomes following primary tetralogy of Fallot (TOF) repair in neonates and young infants with pulmonary stenosis (PS) and pulmonary atresia and compare differences in reintervention on the right ventricular outflow tract (RVOT) among those undergoing valve sparing repair (VSR), transannular RVOT patch (TAP), and right ventricle-to-pulmonary artery (RV-PA) conduit surgeries. METHODS: Data were collected retrospectively in 101 patients who underwent TOF repair over a 10-year period between January 2005 and September 2015...
September 19, 2017: Journal of Thoracic and Cardiovascular Surgery
keyword
keyword
79613
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"