keyword
MENU ▼
Read by QxMD icon Read
search

Right ventricular function

keyword
https://www.readbyqxmd.com/read/29664507/echocardiographic-evaluation-after-pediatric-heart-transplant-in-chile-initial-application-of-a-functional-protocol-with-global-longitudinal-strain
#1
Claudia Trincado, Víctor Molina, Gonzalo Urcelay, Paulina Dellepiane
INTRODUCTION: The echocardiographic evaluation of patients after heart transplantation is a useful tool. However, it is still necessary to define an optimal follow-up protocol. OBJECTIVE: To describe the results of the application of a functional echocardiographic protocol in patients being followed after pediatric heart transplantation. PATIENTS AND METHOD: Alls patients being followed at our institution after pediatric heart transplantation underwent an echocardiographic examination with a functional protocol that included global longitudinal strain...
February 2018: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/29659777/number-of-pregnancies-and-subsequent-phenotype-in-a-cross-sectional-cohort-of-women-with-arrhythmogenic-cardiomyopathy
#2
Anna I Castrini, Øyvind H Lie, Ida S Leren, Mette E Estensen, Mathis K Stokke, Lars G Klæboe, Thor Edvardsen, Kristina H Haugaa
Aims: We aimed to assess the relation between number of pregnancies and cardiac structure, function, and arrhythmic events in women with arrhythmogenic cardiomyopathy (AC). Methods and results: We included female AC patients in a cross-sectional study. Number of pregnancies and pregnancy related symptoms were recorded. Ventricular arrhythmias were defined as aborted cardiac arrest, sustained ventricular tachycardia, or appropriate implantable cardioverter-defibrillator therapy...
April 6, 2018: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29658865/hemodynamic-consequence-of-different-pacing-modes-after-aortic-valve-replacement
#3
Arndt H Kiessling
OBJECTIVES: Ventricular pacemaker stimulation may cause deterioration of hemodynamics in patients with left-ventricular hypertrophy following aortic valve replacement. Since the diastolic function is often impaired, it remains unclear which heart rate best optimizes cardiac output. Low heart rates are suggested to treat impaired diastolic function chronically, but it is possible that cardiac output may be augmented by increasing the heart rate in patients with a fixed stroke volume (SV)...
March 6, 2018: Heart Surgery Forum
https://www.readbyqxmd.com/read/29657239/application-of-a-fresh-decellularized-pulmonary-allograft-for-pulmonary-valve-replacement-in-japan
#4
Hideto Ozawa, Takayoshi Ueno, Masaki Taira, Koichi Toda, Toru Kuratani, Yoshiki Sawa
BACKGROUND: Tissue engineering has advanced the technique of decellularization of the heart valve. The valve is reseeded with the patient's own cells after implantation with suppression of immunologic reactions. The same advantage has been reported for fresh decellularized heart valves, and more than 10 years of excellent outcomes have been achieved. We began performing such heart valve implantations in 2013 as part of a clinical study at Osaka University. We report our evaluation of the safety and efficacy of heart valve implantation...
April 14, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29657079/functional-selectivity-of-cardiac-preganglionic-sympathetic-neurones-in-the-rabbit-heart
#5
Reshma A Chauhan, John Coote, Emily Allen, Pott Pongpaopattanakul, Kieran E Brack, G Andre Ng
BACKGROUND: Studies have shown regional and functional selectivity of cardiac postganglionic neurones indicating there might exist a similar heterogeneity in spinal segmental preganglionic neurones, which requires further investigation. METHODS: Right and left sympathetic chains were electrically stimulated from T6 to T1 in the innervated isolated rabbit heart preparation (n = 18). Sinus rate, left ventricular pressure, retrograde ventriculo-atrial conduction, monophasic action potential duration, effective refractory period, ventricular fibrillation threshold and electrical restitution were measured...
March 27, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29655509/reduced-right-ventricular-fractional-area-change-strain-and-strain-rate-before-bidirectional-cavopulmonary-anastomosis-is-associated-with-medium-term-mortality-for-children-with-hypoplastic-left-heart-syndrome
#6
Lily Q Lin, Jennifer Conway, Silvia Alvarez, Benjamin Goot, Jesus Serrano-Lomelin, Timothy Colen, Edythe B Tham, Shelby Kutty, Ling Li, Nee Scze Khoo
BACKGROUND: Ventricular dysfunction is associated with increased morbidity and mortality in children with hypoplastic left heart syndrome. The aim of this study was to assess the diagnostic performance of conventional and speckle-tracking echocardiographic measures of right ventricular (RV) function before bidirectional cavopulmonary anastomosis palliation in predicting death or need for heart transplantation (HTx). METHODS: RV fractional area change (RVFAC) and longitudinal and circumferential strain and strain rate (SR) were measured in 64 prospectively recruited patients with hypoplastic left heart syndrome from echocardiograms obtained before bidirectional cavopulmonary anastomosis surgery...
April 12, 2018: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29653363/trapidil-improves-hemodynamic-echocardiographic-and-redox-state-parameters-of-right-ventricle-in-monocrotaline-induced-pulmonary-arterial-hypertension-model
#7
Patrick Türck, Denise Santos Lacerda, Cristina Campos Carraro, Bruna Gazzi de Lima-Seolin, Rayane Brinck Teixeira, Jéssica Hellen Poletto Bonetto, Rafael Colombo, Paulo Cavalheiro Schenkel, Adriane Belló-Klein, Alex Sander da Rosa Araujo
BACKGROUND: Pulmonary arterial hypertension is a disease characterized by increased pulmonary vascular resistance and redox imbalance, leading to failure of right ventricle. Trapidil has been described to improve the redox balance and cardiac conditions. HYPOTHESIS: Trapidil can improve the redox balance and contribute to functional improvements of the RV in PAH. METHODS AND RESULTS: Male, 5week-old Wistar rats were divided into four groups: Control, Control + Trapidil, Monocrotaline and Monocrotaline + Trapidil...
April 10, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29652902/relations-between-right-ventricular-morphology-and-clinical-electrical-and-genetic-parameters-in-brugada-syndrome
#8
Belinda Gray, Ganesh Kumar Gnanappa, Richard D Bagnall, Giuseppe Femia, Laura Yeates, Jodie Ingles, Charlotte Burns, Rajesh Puranik, Stuart M Grieve, Christopher Semsarian, Raymond W Sy
BACKGROUND: Increasing evidence suggests the presence of structural changes affecting the right ventricular outflow tract (RVOT) in patients with Brugada Syndrome (BrS). The aim of this study was to characterise the RV morphology in BrS and explore associations between morphologic, clinical, electrical, and genetic parameters using non-invasive multimodality testing. METHODS: Consecutive BrS patients (recruited 2013-2015) underwent clinical assessment, dedicated RV imaging using cardiac magnetic resonance (CMR) imaging (unless contra-indicated), electrical assessment (electrocardiogram, Holter monitoring, signal-averaged ECG[SAECG]) and genotyping...
2018: PloS One
https://www.readbyqxmd.com/read/29652651/prediction-of-organ-involvement-in-systemic-sclerosis-by-serum-biomarkers-and-peripheral-endothelial-function
#9
Shin-Ya Kawashiri, Ayako Nishino, Takashi Igawa, Ayuko Takatani, Toshimasa Shimizu, Masataka Umeda, Shoichi Fukui, Akitomo Okada, Takahisa Suzuki, Tomohiro Koga, Naoki Iwamoto, Kunihiro Ichinose, Mami Tamai, Munetoshi Nakashima, Akinari Mizokami, Naoki Matsuoka, Kiyoshi Migita, Fumihide Ogawa, Satoshi Ikeda, Koji Maemura, Hideki Nakamura, Tomoki Origuchi, Takahiro Maeda, Atsushi Kawakami
OBJECTIVES: To identify prognostic factors among serum biomarkers and endothelial vasodilator function findings in patients with systemic sclerosis (SSc). METHODS: This is a clinical observational study. We assessed 60 consecutive SSc patients (44 limited cutaneous-type, 16 diffuse cutaneous-type). Circulating growth differentiation factor-15 (GDF-15), placenta growth factor (PlGF), endostatin, vascular endothelial growth factor (VEGF), and pentraxin 3 (PTX3) were measured by ELISA...
April 12, 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29650544/evaluation-and-management-of-right-sided-heart-failure-a-scientific-statement-from-the-american-heart-association
#10
REVIEW
Marvin A Konstam, Michael S Kiernan, Daniel Bernstein, Biykem Bozkurt, Miriam Jacob, Navin K Kapur, Robb D Kociol, Eldrin F Lewis, Mandeep R Mehra, Francis D Pagani, Amish N Raval, Carey Ward
BACKGROUND AND PURPOSE: The diverse causes of right-sided heart failure (RHF) include, among others, primary cardiomyopathies with right ventricular (RV) involvement, RV ischemia and infarction, volume loading caused by cardiac lesions associated with congenital heart disease and valvular pathologies, and pressure loading resulting from pulmonic stenosis or pulmonary hypertension from a variety of causes, including left-sided heart disease. Progressive RV dysfunction in these disease states is associated with increased morbidity and mortality...
April 12, 2018: Circulation
https://www.readbyqxmd.com/read/29649701/change-of-heart-dimensions-and-function-during-pregnancy-in-goats
#11
Olga Szaluś-Jordanow, Michał Czopowicz, Lucjan Witkowski, Agata Moroz, Marcin Mickiewicz, Tadeusz Frymus, Iwona Markowska-Daniel, Emilia Bagnicka, Jarosław Kaba
The study aimed to evaluate the effect of pregnancy on heart diameters and function in goats. Transthoracic echocardiography of 12 female dairy goats of two Polish regional breeds was performed. A Mindray M7 diagnostic ultrasound system with Phased Array transducer was used. Simultaneously, electrocardiography was recorded. All animals were examined four times - at mating season, at the end of the first trimester, at the end of the second trimester and just before kidding. Eleven measurements were taken each time: aortic and left atrial diameter (AoD and LAD), right and left ventricular internal diameter in diastole (RVIDd and LVIDd), left ventricular internal diameter in systole (LVIDs), inter-ventricular septum thickness in diastole and systole (IVSd and IVSd) and left ventricular posterior wall in diastole and systole (LVPWd and LVPWs), maximum left and right ventricular outflow tract velocity (RVOT Vmax and LVOT Vmax)...
March 8, 2018: Research in Veterinary Science
https://www.readbyqxmd.com/read/29648700/serial-echocardiographic-changes-with-different-body-positions-and-sleeping-side-preference-in-heart-failure-patients
#12
Muhammed Fatih Bayraktar, Ozcan Ozeke
BACKGROUND: The sleeping position plays an important role in overall health in both healthy individuals and heart failure (HF) patients, which complain of increasing dyspnea when adopting left lateral decubitus position (LLDP) that improves when turning over to the right lateral decubitus position (RLDP). Several theories have been proposed to explain this preference of HF patients; however, the underlying mechanisms remain unclear. METHOD: We evaluated consecutive dilated cardiomyopathy (DCMP) patients with regard to whether they had a sleeping position preference and analyzed early and late left ventricular filling velocities, tissue Doppler recordings, tricuspid annular plane systolic excursion (TAPSE), and left ventricular outflow tract time-velocity integral (LVOT-TVI)...
April 12, 2018: Echocardiography
https://www.readbyqxmd.com/read/29644895/%C3%AE-1-subunit-of-the-calcium-sensitive-potassium-channel-modulates-the-pulmonary-vascular-smooth-muscle-cell-response-to-hypoxia
#13
Elizabeth A Barnes, Lori Lee, Shayna L Barnes, Robert Brenner, Cristina M Alvira, David N Cornfield
Accessory subunits associated with the calcium-sensitive potassium channel (BKCa ), a major determinant of vascular tone, confer functional and anatomical diversity. The β1 subunit increases Ca2+ -, and voltage-sensitivity of the BKCa channel and is expressed exclusively in smooth muscle cells (SMC). Evidence supporting the physiologic significance of the β1 subunit includes the observations that murine models with deletion of the β1 subunit are hypertensive and that humans with a gain-of-function β1 mutation are at decreased risk of diastolic hypertension, However, whether the β1 subunit of the BKCa channel contributes to the low tone that characterizes the normal pulmonary circulation or modulates the pulmonary vascular response to hypoxia remains unknown...
April 12, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29644405/abnormalities-in-left-ventricular-rotation-are-inherent-in-young-children-with-repaired-tetralogy-of-fallot-and-are-independent-of-right-ventricular-dilation
#14
Ruchika Karnik, Santosh C Uppu, Meghan Tozzi, John Doucette, Irene D Lytrivi, Miwa Geiger, Berthold Klas, Ira A Parness, Rajesh Shenoy, Hari Rajagopal, Shubhika Srivastava
Left ventricular (LV) dysfunction is a risk factor for adverse outcomes in older children and adults with repaired Tetralogy of Fallot (rToF). Pulmonary regurgitation (PR), right ventricular (RV) dilation, and dysfunction have been shown to result in abnormal LV myocardial mechanics and dysfunction. The aim of our study was to evaluate LV rotational mechanics, especially apical rotation in young children with rToF with and without RV dilation. This is a retrospective, single center study in 28 asymptomatic young children with rToF (16 with RV dilation; 12 without RV dilation); 29 age-matched normal controls...
April 11, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29644234/modelling-coronary-flow-after-the-norwood-operation-influence-of-a-suggested-novel-technique-for-coronary-transfer
#15
Mohammed K Al-Jughiman, Maryam A Al-Omair
Background: The dynamic behavior of the aortic sinuses has an important function in the specific characteristics of coronary blood flow. Several publications have confirmed suboptimal myocardial perfusion after the Norwood procedure. Our study was undertaken to confirm four hypotheses. First, we hypothesized that there is more resistance to coronary flow due to coronary attachments to hypoplastic aortic root and sinuses. Also, as the amalgamation of the ascending aorta with the pulmonary artery occurs above the aortic root, the coronary blood flow is not fully in antegrade pattern...
March 14, 2018: Global Cardiology Science & Practice
https://www.readbyqxmd.com/read/29643702/evaluation-of-right-ventricular-function-by-speckle-tracking-echocardiography-in-patients-with-ankylosing-spondylitis-a-case-control-study
#16
Mustafa Zungur, Ilker Gul, Senol Kobak
Background: We aimed to evaluate the right ventricular (RV) systolic function in patients with ankylosing spondylitis (AS) compared to healthy subjects by using standard echocardiography and speckle-tracking echocardiography (STE) methods. Methods: This was a case-control study in which 64 patients (mean age, 55.7 ± 9.2 years; male/female, 53/11), who had AS for at least five years (mean disease duration, 7.1 ± 2.6 years) and 70 age-matched healthy subjects (mean age, 54...
March 2018: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/29642693/tricuspid-valve-surgery-repair-and-replacement
#17
Ahmed El-Eshmawi, Pandis Dimosthenis, Gilbert H Tang
The tricuspid valve has historically received less attention than any other cardiac valve with regard to pathophysiology and surgical management. The tricuspid valve is part of a complex functional apparatus that includes the right atrium, right ventricle, and pulmonary circulation. Functional tricuspid regurgitation is the most common tricuspid valve disease and it occurs secondary to dilatation of tricuspid annulus and/or tethering of valve leaflets from right ventricular dilatation and dysfunction. However, recent expansion in the use of right-sided transvenous devices such as pacemakers and implantable defibrillators has been met with a parallel increase in the risk of organic tricuspid disease...
April 11, 2018: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/29642689/the-obestiy-paradox-the-protective-effect-of-obesity-on-right-ventricular-function-using-echocardiographic-strain-imaging-in-patients-with-pulmonary-hypertension
#18
Hiten Patel, Suchit Bhutani, Sahitya Posimreddy, Priyank Shah, Upamanyu Rampal, Apurva Gandhi, Rahul Vasudev, Raja Pullatt, Hartaj Virk, Fayez Shamoon, Mahesh Bikkina, Irvin Goldfarb
BACKGROUND: Obesity is associated withright ventricular (RV) dysfunction, but its effect on RV remodeling in patients with pulmonary hypertension(PHTN) has not been studied. We evaluated the effect of obesity, and its interplay with diabetes, in patients with PHTN using RV echocardiographic strain imaging. METHODS: 185 patients underwent echocardiographic imaging and pulmonary artery pressure was calculated using tricuspid regurgitation jet velocity. From focused RV apical-four-chamber view, global and mid peak systolic RV free wall longitudinal strain (FWLS) wascalculated using speckle-tracking software...
April 11, 2018: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/29629994/the-achilles-heel-of-left-ventricular-assist-device-therapy-right-ventricle
#19
Neel K Ranganath, Deane E Smith, Nader Moazami
PURPOSE OF REVIEW: Many patients suffer from either persistent right ventricular failure (RVF) at the time of left ventricular assist device (LVAD) or have ongoing symptoms consistent with RVF during chronic mechanical circulatory support. The lack of long-term right ventricular assist devices (RVADs) has limited the impact that mechanical circulatory support can provide to patients with biventricular failure. We aim to review the entire spectrum of RVF in patients receiving LVADs and reflect on why this entity remains the Achilles' heel of LVAD therapy...
April 7, 2018: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/29629269/right-ventricular-outflow-tract-systolic-excursion-and-fractional-shortening-for-the-assessment-of-right-ventricular-function
#20
Beuy Joob, Viroj Wiwanitkit
No abstract text is available yet for this article.
January 2018: Journal of Cardiovascular Echography
keyword
keyword
9172
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"