keyword
MENU ▼
Read by QxMD icon Read
search

Right ventricular outflow

keyword
https://www.readbyqxmd.com/read/28636647/hemodynamic-and-metabolic-characteristics-associated-with-development-of-a-right-ventricular-outflow-tract-pressure-gradient-during-upright-exercise
#1
Annelieke C M J van Riel, David M Systrom, Rudolf K F Oliveira, Michael J Landzberg, Barbara J M Mulder, Berto J Bouma, Bradley A Maron, Amil M Shah, Aaron B Waxman, Alexander R Opotowsky
BACKGROUND: We recently reported a novel observation that many patients with equal resting supine right ventricular(RV) and pulmonary artery(PA) systolic pressures develop an RV outflow tract(RVOT) pressure gradient during upright exercise. The current work details the characteristics of patients who develop such an RVOT gradient. METHODS: We studied 294 patients (59.7±15.5 years-old, 49% male) referred for clinical invasive cardiopulmonary exercise testing, who did not have a resting RVOT pressure gradient defined by the simultaneously measured peak-to-peak difference between RV and PA systolic pressures...
2017: PloS One
https://www.readbyqxmd.com/read/28636507/aorto-right-ventricular-outflow-tract-fistula-after-bentall-repair
#2
Arun Gopalakrishnan, Sivadasanpillai Harikrishnan, Kavassery Mahadevan Krishnamoorthy, Tirur Raman Kapilamoorthy, Ajitkumar Valaparambil, Jaganmohan Tharakan
No abstract text is available yet for this article.
March 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28633398/a-novel-system-for-the-treatment-of-aortic-annular-dilation-an-ex-vivo-investigation
#3
Pallav Shah, Claudia Romagnoni, Michal Jaworek, Federico Lucherini, Monica Contino, Alan Menkis, Guido Gelpi, Gianfranco B Fiore, Carlo Antona, Riccardo Vismara
OBJECTIVES: The main reason for aortic repair failures is recurrent annular dilatation. The fibrous portion of left ventricular outflow tract dilates. A novel device was designed to tackle this problem. METHODS: The device consists of an internal ring applied at the aortic annulus plus an external flexible band at the level of the aortic root. The internal ring has a semi-rigid portion (40%, placed at ventriculo-arterial junction) and a flexible portion to allow it to conform along the curves of the non-coronary/right coronary leaflet and right coronary/left coronary leaflet commissures...
June 15, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28633270/surgical-correction-for-a-neonate-with-ebstein-s-anomaly-associated-with-tetralogy-of-fallot
#4
Ling-Yi Wei, Jin-Chung Shih, En-Ting Wu, Shyh-Jye Chen, Yih-Sharng Chen, Shu-Chien Huang
Ebstein's anomaly in combination with tetralogy of Fallot (TOF) is rare. We report a male infant with these combined anomalies who presented with severe cyanosis, heart failure, and respiratory distress after birth. Biventricular repair was successfully performed with 1-stage correction of his ventricular septal defect (VSD), right ventricular outflow tract (RVOT) obstruction, and tricuspid regurgitation. The downward displaced tricuspid valve was also restored to the normal annulus position. The infant recovered well...
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28633265/again-two-melodies-in-concert-transcatheter-double-valve-replacement-in-hedinger-syndrome
#5
Roberta De Rosa, Dietmar Schranz, Andreas M Zeiher, Stephan Fichtlscherer
Transcatheter pulmonary valve implantation is established as a valuable option to reconstruct failing right ventricular outflow tract function. Percutaneous tricuspid valve-in-valve or valve-in-ring reconstruction is even applied with increasing acceptance. A 46-year-old woman with a diagnosis of carcinoid-dependent right heart failure underwent surgical bioprosthetic tricuspid and pulmonary valve replacement. Almost 1 year later, she presented again with markedly dilatated and reduced right heart function caused by degeneration of both biologic valves...
July 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28631207/qrs-width-as-a-predictor-of-right-ventricular-remodeling-after-percutaneous-pulmonary-valve-implantation
#6
C Paech, I Dähnert, F T Riede, R Wagner, T Kister, K Nieschke, F Wagner, R A Gebauer
Recent data showed a right ventricular dyssynchrony in patients with tetralogy of Fallot (TOF). Percutaneous pulmonary valve implantation (PPVI) has become an important procedure to treat a pulmonary stenosis and/or regurgitation of the right ventricular outflow tract in these patients. Despite providing good results, there is still a considerable number of nonresponders to PPVI. The authors speculated that electrical dysfunction of the right ventricle plays an underestimated role in the outcome of patients after PPVI...
June 19, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28629628/left-ventricular-outflow-tract-obstruction-and-its-impact-on-systolic-ventricular-function-and-exercise-capacity-in-adults-with-a-subaortic-right-ventricle
#7
Annina Stauber, Céline Wey, Matthias Greutmann, Daniel Tobler, Kerstin Wustmann, Andreas Wahl, Emanuela R Valsangiacomo Buechel, Matthias Wilhelm, Markus Schwerzmann
BACKGROUND: In biventricular hearts the filling and contractility of one ventricle affects the performance of the other. In this study, we compared right ventricular systolic function and exercise capacity in patients with a subaortic right ventricle (RV) in relation to the presence of a left ventricular outflow tract obstruction (LVOTO). METHODS: Retrospective chart review of adults with congenitally corrected transposition of the great arteries (ccTGA) or with a previous atrial switch procedure for complete TGA (D-TGA)...
June 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28624891/frontal-placement-of-dispersive-patch-for-effective-ablation-of-arrhythmia-originating-from-the-anterior-right-ventricular-outflow-tract
#8
Piotr Futyma, Piotr Kułakowski
No abstract text is available yet for this article.
June 17, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28616273/mid-to-long-term-outcomes-of-bovine-jugular-vein-conduit-implantation-in-chinese-children
#9
Hui-Feng Zhang, Gang Chen, Ming Ye, Xian-Gang Yan, Qi-Lin Tao, Bing Jia
BACKGROUND: Bovine jugular vein (BJV) conduits are widely applied for surgical reconstruction of the right ventricular outflow tract (RVOT). However, relevant studies of valve failure rates and the related risk factors are limited in China. The aim of this study was to assess the BJV prognosis after medium- to long-term follow-up. METHODS: Fifty-three hospital patients implanted with BJV conduits from January 2002 to December 2013 were recruited. Patient information and follow-up prognosis were reviewed retrospectively...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28606161/right-ventricular-outflow-tract-obstruction-caused-by-right-ventricular-fibroma-in-a-5-month-old-infant-a-case-report
#10
Fuyang Mei, Bing Zhou, Yong Cui
BACKGROUND: Cardiac fibroma is rarely encountered in children, and even more rare in neonates. We herein report a case of a 5-month-old female with severe right ventricular outflow tract obstruction caused by a large right ventricle fibroma that was successfully surgically resected. CASE PRESENTATION: This report describes the case of a 5-month-old female infant with a large mass measuring 26 × 22 mm in the right ventricle cured successfully with surgery. Physical examination revealed a harsh S1 sound and a grade IV systolic murmur on the left sternal border...
June 12, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28605166/crista-supraventricularis-purkinje-network-and-its-relation-to-intraseptal-purkinje-network
#11
Marcos De Almeida, Mayssa Araujo, Mathias Duque, Virginia Vilhena
Using transparent specimens with a dual color injection, microscopy and computer tomography, this report shows that the right and left ventricular subendocardial Purkinje networks are connected by an extensive septal network in the bovine heart. The septal network is present along the entire septum except at a free zone below ventricular valves. Being the only communication of the basal right septum with the right free wall, the supraventricular crest is an enigmatic but not, by any means, hidden muscular structure...
June 12, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28603940/outcome-of-prenatally-diagnosed-fetal-heterotaxy-a-systematic-review-and-meta-analysis
#12
REVIEW
Danilo Italo Pio Buca, Asma Khalil, Giuseppe Rizzo, Alessandra Familiari, Silvia Di Giovanni, Marco Liberati, Daniela Murgano, Alessandra Ricciardulli, Francesco Fanfani, Giovanni Scambia, Francesco D'Antonio
OBJECTIVES: To assess the perinatal outcomes of fetuses affected by heterotaxy. METHODS: Medline, Embase and Cinhal were searched. Only studies reporting a prenatal diagnosis of isomerism were included. The outcomes observed were: associated cardiac and extra-cardiac anomalies, fetal arrhythmias, abnormal karyotype, type of surgical repair and perinatal mortality. The analysis was stratified according the type of heterotaxy syndrome (left, LAI, and right, RAI, atrial isomerism)...
June 12, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28597737/extension-of-catheter-ablation-and-outcome-for-ventricular-tachycardia-or-premature-ventricular-contractions-from-the-right-ventricular-outflow-tract
#13
Ki-Hun Kim, Hyoung-Seob Park, Yeo-Jung Song, Jeong-Sook Seo, Han-Young Jin, Dae-Kyeong Kim, Dong-Soo Kim, Young-Soo Lee, Ki-Won Hwang, Guang-Won Seo, Dong-Kie Kim, Pil-Sang Song, Sang-Hoon Seol, Doo-Il Kim, Yoon-Nyun Kim
Objective We aimed to determine whether the extension of ablation could influence the ablation outcome for ventricular tachycardia (VT)/premature ventricular contractions (PVCs) from the right ventricular outflow tract (RVOT). Methods and results The radiofrequency catheter ablation results of 33 VT/6 frequent PVCs from the RVOT were analysed. The ablation extension was divided into 3 categories from the final successful ablation point with the earliest activation: (I) focal ablation (15 cases); ablation at 1 or 2 points; (II) focal with extended ablation (12 cases); focal and surrounding area ablation (maximum ≤1 cm) after elimination of clinical VT/PVCs; and (III) broad ablation (12 cases); continued broad ablation (maximum >1 cm) after elimination of clinical VT/PVCs...
February 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28592727/temporal-sequential-pattern-of-right-ventricular-free-wall-contraction-in-normal-children
#14
Yasunobu Hayabuchi, Akemi Ono, Yukako Homma, Shoji Kagami
BACKGROUND: The temporal sequence of right ventricular (RV) deformation is related to RV dysfunction. The sequence of RV free wall contraction was investigated.Methods and Results:In this prospective study, strain profiles using speckle-tracking echocardiography and tissue Doppler-derived pulmonary and tricuspid annular motion were assessed in 60 normal children. Circumferential RV free wall strain of 3 individual segments (anterior, lateral, and inferior) was evaluated. Longitudinal strain was assessed in 3 individual segments (RV outflow tract [RVOT], apical, and RV inflow tract [RVIT])...
June 6, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28592140/surgical-treatment-for-double-chambered-right-ventricle-in-a-septuagenarian
#15
Satoshi Unosawa, Shunji Osaka, Munehito Arimoto, Yuuki Hayashi, Yoshiki Kitazumi, Masashi Tanaka
The majority of patients with double-chambered right ventricle present during childhood; it is rarely treated in adults. We report the case of a 71-year-old woman who presented with mild fatigue for 2 years. Investigation of an ejection systolic murmur revealed a double-chambered right ventricle with a peak gradient of 147 mm Hg across the right ventricular outflow tract. Substantial right ventricular muscle bundle resection and augmentation of the right ventricular outflow tract with a bovine pericardial patch were performed after a right ventriculotomy...
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/28591541/lithium-use-in-pregnancy-and-the-risk-of-cardiac-malformations
#16
COMPARATIVE STUDY
Elisabetta Patorno, Krista F Huybrechts, Brian T Bateman, Jacqueline M Cohen, Rishi J Desai, Helen Mogun, Lee S Cohen, Sonia Hernandez-Diaz
BACKGROUND: There has been concern that exposure to lithium early in pregnancy may be associated with a marked increase in the risk of Ebstein's anomaly (a right ventricular outflow tract obstruction defect) in infants and overall congenital cardiac defects, but data are conflicting and limited. METHODS: We conducted a cohort study involving 1,325,563 pregnancies in women who were enrolled in Medicaid and who delivered a live-born infant between 2000 and 2010. We examined the risk of cardiac malformations among infants exposed to lithium during the first trimester as compared with unexposed infants and, in secondary analyses, with infants exposed to another commonly used mood stabilizer, lamotrigine...
June 8, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28585685/pulmonary-artery-a-pivotal-site-for-catheter-ablation-in-idiopathic-rvot-ventricular-arrhythmias
#17
REVIEW
Chunmiao Wang, Yawen Zhang, Fangde Hong, Ying Huang
In patients without associated myocardial diseases, characterized by left bundle branch block (LBBB) and inferior axis morphologies, repetitive idiopathic right ventricular tachycardias (VTs) and ventricular premature contractions (VPCs) typically arise from right ventricular outflow tract (RVOT). Accumulated evidences have shown that radiofrequency catheter ablation (RFCA) is a useful treatment for patients with RVOT ventricular arrhythmias (VAs). Interestingly, several medical centers have showed that pulmonary artery (PA) is a potential novel site for catheter ablation in RVOT-like VAs, particularly in patients where termination of RVOT VAs at the usual site fails...
June 6, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28583685/usefulness-of-the-r-wave-sign-as-a-predictor-for-ventricular-tachyarrhythmia-in-patients-with-brugada-syndrome
#18
Ahmed A Y Ragab, Charlotte A Houck, Lisette J M E van der Does, Eva A H Lanters, Danielle E Burghouwt, Agnes J Q M Muskens, Natasja M S de Groot
Brugada syndrome (BrS) is an autosomal dominant channelopathy which is responsible for a large number of sudden cardiac deaths in young subjects without structural abnormalities. The most challenging step in management of patients with BrS is identifying who is at risk for developing malignant ventricular tachyarrhythmia (VTA). In patients with BrS, conduction delay in the right ventricular outflow tract (RVOT) causes a prominent R wave in lead aVR. This electrocardiographic parameter can be useful to detect these high-risk patients...
May 11, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28579248/echocardiography-derived-left-ventricular-outflow-tract-gradient-and-left-ventricular-posterior-wall-thickening-are-associated-with-outcomes-for-anatomic-repair-in-congenitally-corrected-transposition-of-the-great-arteries
#19
Shreya Moodley, Sowmya Balasubramanian, Theresa A Tacy, Frandics Chan, Frank L Hanley, Rajesh Punn
BACKGROUND: Congenitally corrected transposition of the great arteries is a rare form of congenital heart disease. Management is controversial; options include observation, physiologic repair, and anatomic repair. Assessment of morphologic left ventricle preparedness is key in timing anatomic repair. This study's purpose was to review the modalities used to assess the morphologic left ventricle preoperatively and to determine if any echocardiographic variables are associated with outcomes...
June 1, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28575228/right-ventricular-outflow-tract-dimensions-in-arrhythmogenic-right-ventricular-cardiomyopathy-dysplasia-a-multicentre-study-comparing-echocardiography-and-cardiovascular-magnetic-resonance
#20
Alexander Gotschy, Ardan M Saguner, Markus Niemann, Sandra Hamada, Deniz Akdis, Ji-Na Yoon, Elena V Parmon, Victoria Delgado, Jeroen J Bax, Sebastian Kozerke, Corinna Brunckhorst, Firat Duru, Felix C Tanner, Robert Manka
Aims: Right ventricular outflow tract (RVOT) dilation is one of the echocardiographic criteria in the 2010 revised Task Force Criteria (TFC) of arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D). However, studies comparing cardiac magnetic resonance (CMR) and transthoracic echocardiography (TTE) suggest a lower diagnostic accuracy of TTE due to its operator dependence and limited reproducibility. The goal of this study was to compare the 2010 TFC measures of RVOT dilation with three alternative measures for improving the echocardiographic assessment of RVOT in patients with ARVC/D...
May 26, 2017: European Heart Journal Cardiovascular Imaging
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"