keyword
MENU ▼
Read by QxMD icon Read
search

Right Ventricle

keyword
https://www.readbyqxmd.com/read/28427109/traveler-s-diarrhea-vision-abnormalities-and-unsteady-gait-in-a-young-woman
#1
Tobias Mühling, Felix Gundling, Thomas Helmberger, Wolfgang Schepp
We report on the course of disease in a young woman, originally admitted with suspected refractory infectious tropical traveler's diarrhea. However, symptoms did not resolve upon either symptomatic or subsequent antibiotic therapy. When neurologic deterioration was observed, imaging studies revealed a dramatic series of thromboembolic events, including intracranial hemorrhage caused by extensive sinus vein thrombosis as well as thrombi of the right cardiac ventricle. Colonic mucosal biopsy samples finally led to the histologic diagnosis of ulcerative colitis...
April 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/28426774/the-role-of-air-pollution-in-myocardial-remodeling
#2
A M de Oliveira-Fonoff, C Mady, F G Pessoa, K C B Fonseca, V M C Salemi, F Fernandes, P H N Saldiva, F J A Ramires
BACKGROUND: Excessive air pollution in urban environments can impact morbidity and mortality. The authors evaluated the role of particulate matter2.5 (PM2.5) in structural, geometric, and functional remodeling in hearts, using an experimental model of myocardial infarction. METHODS AND FINDINGS: Seventy-five rats were divided into 5 groups: control (CG), CG exposed to PM2.5 pollution (CGP), myocardial infarcted group (MI), infarcted group immediately exposed to pollution (IGP-I), and infarcted group previously exposed to pollution and kept exposed after infarction (IGP-II)...
2017: PloS One
https://www.readbyqxmd.com/read/28425587/hybrid-finite-difference-finite-element-immersed-boundary-method
#3
Boyce E Griffith, Xiaoyu Luo
The immersed boundary method is an approach to fluid-structure interaction that uses a Lagrangian description of the structural deformations, stresses, and forces along with an Eulerian description of the momentum, viscosity, and incompressibility of the fluid-structure system. The original immersed boundary methods described immersed elastic structures using systems of flexible fibers, and even now, most immersed boundary methods still require Lagrangian meshes that are finer than the Eulerian grid. This work introduces a coupling scheme for the immersed boundary method to link the Lagrangian and Eulerian variables that facilitates independent spatial discretizations for the structure and background grid...
April 20, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28425226/a-review-of-pediatric-pulmonary-hypertension-with-new-guidelines
#4
Serdar Kula, Ayhan Pektaş
This study aims to review pediatric pulmonary hypertension (PH) by comparing the guidelines of the European Society of Cardiology (ESC)/European Respiratory Society (ERS), the American Heart Association (AHA)/American Thoracic Society (ATS), and the European Pediatric Pulmonary Vascular Disease Network (EPPVDN). All three sets of guidelines define PH as having a mean pulmonary artery pressure of ≥25 mmHg and accept the validity of the World Health Organization (WHO) classification system. Every child with a high index of suspicion for PH should undergo an initial work-up of chest X-rays, electrocardiography, and echocardiography...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28423132/repair-of-penetrating-pericardial-and-diaphragmatic-injury-with-cormatrix%C3%A2-patch-in-a-case-of-suicide-attempt
#5
Federica Jiritano, Carlo Garrasi, Lucia Cristodoro, Egidio Bevacqua, Pasquale Mastroroberto
The authors report the case of a suicide attempt. A 59-year-old man with self-inflicted penetrating chest trauma underwent emergency cardiothoracic surgery. Pre-operative computed tomography scan showed critical proximity between the blade and the right ventricle. Intraoperative findings showed a pericardial laceration and a huge diaphragmatic lesion with heart and abdominal organs integrity. The diaphragm muscle was repaired with a CorMatrix® patch, an acceptable alternative to the traditional synthetic mesh avoiding infection and repeated herniation...
January 2017: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28421915/use-of-a-modified-classic-bt-shunt-in-a-patient-with-multiple-conduit-obstructions-with-positive-lupus-anticoagulant
#6
Pallav Bhattarai, Ayesha Zia, Joseph M Forbess, Kristine J Guleserian, Susan R Hupp, Timothy Pirolli
The use of a right ventricle-to-pulmonary artery conduit has re-emerged as a popular alternative to a systemic artery-to-pulmonary artery shunt in the Norwood procedure. Both proximal obstruction secondary to dynamic compression and distal obstruction at the anastomosis site with the pulmonary arteries are well described. In an effort to prevent complications, a technique where in the conduit is placed through the entire full thickness, or dunked, through the RV free wall has been described. We report a case of a patient with HLHS and positive lupus anticoagulant who developed recurrent conduit obstructions...
January 1, 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28421590/double-outlet-right-ventricle-with-absent-infundibular-septum-and-common-ventriculo-arterial-valve
#7
Paolo Ciliberti, Aurelio Secinaro, Gabriele Rinelli, Alessia Del Pasqua, Adriano Carotti
No abstract text is available yet for this article.
2017: Cardiology Journal
https://www.readbyqxmd.com/read/28419986/hypodysfibrinogenemia-with-a-heterozygous-mutation-of-%C3%AE-cys326ser-by-the-novel-transversion-of-tgt-to-tct-in-a-patient-with-pulmonary-thromboembolism-and-right-ventricular-thrombus
#8
Akiko Ushijima, Taichi Komai, Atsuko Masukawa, Keiko Oikawa, Norishige Morita, Satomi Asai, Saki Mukai, Nobuo Okumura, Yoshinori Kobayashi, Hayato Miyachi
We encountered a 45-year-old Japanese man who suffered from pulmonary thromboembolism and huge right ventricular thrombus after inferior vena cava (IVC) filter implantation without apparent thrombus in either the deep veins or inside the IVC filter. The biochemical data showed a discrepancy in the level of fibrinogen between the immunological and thrombin time methods, suggesting hypodysfibrinogenemia. The sequencing of the fibrinogen γ-chain gene (FGG) revealed a novel heterozygous missense mutation in exon 8 - a TGT to TCT transversion in codon 326 - resulting in an amino acid substitution of serine for cysteine (γCys326Ser)...
April 19, 2017: Cardiology
https://www.readbyqxmd.com/read/28419713/nt-probnp-predicts-mortality-in-adults-with-transposition-of-the-great-arteries-late-after-mustard-or-senning-correction
#9
Jana Rubáčková Popelová, Markéta Tomková, Jakub Tomek
OBJECTIVE: The patients after Mustard and Senning corrections of transposition of the great arteries (TGA) are at an increased risk of unexpected death. The aim of this study was to identify markers allowing risk stratification of patients after atrial switch correction of TGA to provide them with optimum care. METHODS AND RESULTS: In this study, 87 patients were retrospectively evaluated after atrial switch correction of TGA followed-up between 2005 and 2015. The mortality during the follow-up was 9% (8 cardiac deaths)...
April 17, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28417288/troponin-t-elevation-after-permanent-pacemaker-implantation
#10
Xueying Chen, Ziqing Yu, Jin Bai, Shulan Hu, Wei Wang, Shengmei Qin, Jingfeng Wang, Zhe Sun, Yangang Su, Junbo Ge
PURPOSE: The objective of the study is to study the incidence, significance, and factors associated with cardiac troponin T (CTNT) elevation after pacemaker implantation. METHODS: Three hundred seventy-four patients (104 single-chamber pacemakers or ICD, 243 dual-chamber pacemakers, and 27 cardiac resynchronization therapy/cardiac resynchronization therapy defibrillator) who had normal levels of CTNT at baseline and underwent implantation of a permanent pacemaker system were included in this study...
April 18, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28416980/comparison-of-the-measured-pre-ejection-periods-and-left-ventricular-ejection-times-between-echocardiography-and-impedance-cardiography-for-optimizing-cardiac-resynchronization-therapy
#11
Kazuki Noda, Hideaki Endo, Takahide Kadosaka, Takashi Nakata, Tasuku Watanabe, Yosuke Terui, Shoko Kajitani, Yuto Monnma, Kenjiro Sato, Masanori Kanazawa, Sota Nakajima, Masateru Kondo, Tohru Takahashi, Akihiro Nakamura, Eiji Nozaki
BACKGROUND: The pre-ejection period (PEP) and left ventricular ejection time (LVET) are easily measured by impedance cardiography (ICG). We hypothesized that the PEP/LVET measured by ICG would correlate with that measured by echocardiography, and that PEP/LVET measured by ICG would be useful for cardiac resynchronization therapy (CRT) optimization. METHODS: Newly CRT implanted patients were optimized by echocardiography. The PEP/LVET was measured by echocardiography and ICG in two different settings: optimized setting and right ventricle (RV)-only pacing...
April 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28416589/multimodality-imaging-of-the-tricuspid-valve-with-implication-for-percutaneous-repair-approaches
#12
REVIEW
Francesco Ancona, Stefano Stella, Maurizio Taramasso, Claudia Marini, Azeem Latib, Paolo Denti, Francesco Grigioni, Maurice Enriquez-Sarano, Ottavio Alfieri, Antonio Colombo, Francesco Maisano, Eustachio Agricola
Nowadays some percutaneous options for tricuspid valve (TV) repair are available: Tricinch (4Tech Cardio, Galway, Ireland) mimicking the Kay procedure, Trialign (Mitralign, Boston, MA, USA) aiming to bicuspidise TV, MitraClip (Abbott Vascular, Abbott Park, Illinois, USA) mimicking Alfieri's stitch, direct transcatheter annuloplasty with Cardioband (Valtech Cardio, Or Yehuda, Israel) and transcatheter Forma Repair (Edwards Lifesciences, Irvine, California, USA) providing a surface for leaflet coaptation. A multimodality imaging approach is fundamental for defining the pathophysiology of tricuspid regurgitation (TR), preprocedural planning and intraprocedural monitoring...
April 17, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28416247/adaptive-crt-in-patients-with-normal-av-conduction-and-left-bundle-branch-block-does-qrs-duration-matter
#13
Hiro Yamasaki, Daniel Lustgarten, Jeffrey Cerkvenik, David Birnie, Maurizio Gasparini, Kathy Lia-Fun Lee, Yukio Sekiguchi, Niraj Varma, Bernd Lemke, Randall C Starling, Kazutaka Aonuma
BACKGROUND: Adaptive cardiac resynchronization therapy (aCRT) is a dynamic optimization algorithm which paces only the left ventricle (LV) when atrio-ventricular (AV) conduction is normal, thus reducing right ventricular (RV) pacing. However, the impact of QRS duration on aCRT efficacy remains uncertain. We examined whether QRS duration impacts aCRT effectiveness in patients with left bundle branch block (LBBB) and preserved AV conduction. METHODS: Randomized patients in the Adaptive CRT trial, which enrolled NYHA III/IV patients, were used in this analysis...
April 12, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28416103/a-new-twist-on-right-heart-failure-with-left-ventricular-assist-systems
#14
EDITORIAL
Brian A Houston, Keyur B Shah, Mandeep R Mehra, Ryan J Tedford
Despite significant efforts to predict and prevent right heart failure, it remains a leading cause of morbidity and mortality after implantation of left ventricular assist systems (LVAS). In this Perspective, we review the underappreciated anatomic and physiologic principles that govern the relationship between left and right heart function and contribute to this phenomenon. This includes the importance of considering the right ventricle (RV) and pulmonary arterial circuit as a coupled system; the contribution of the left ventricle (LV) to RV contractile function and the potential negative impact of acutely unloading the LV; the influence of the pericardium and ventricular twist on septal function; the role of RV deformation in reduced mechanical efficiency after device placement; and the potential of ongoing stressors of an elevated right-sided preload...
March 24, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28415084/p260right-cardiac-chambers-remodeling-in-marathon-and-ultra-trail-athletes-detected-by-speckle-tracking-echocardiography
#15
K Ujka, R M Bruno, B Catuzzo, L Bastiani, A Tonacci, G D'angelo, S Mrakic-Sposta, A Vezzoli, G Giardini, L Pratali
Background: Strenuous and chronic exercise training can have detrimental effects on cardiac morphology and function. Our aim was to evaluate the cardiac adaptation between 2 different specialties' endurance athletes: marathon runners (M) and ultra-trailers (UT). Methods: 47 M (age 45±7, men 32; training: 18 (9-53) years*days/week), 41 UT (age 42±9, men 38, training: 30 (15-66) years*days/week) were submitted in rest condition to conventional 2D echocardiography and Speckle-Tracking echo (STE) (Beyond Diogenes 2...
December 1, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28414672/a-strong-and-fortuitous-case-of-dyspnea
#16
R Hammer, M Sciaudone
CASE: A 48 year-old man with no past medical history was sent to our emergency department (ED); from a primary care clinic for hypertensive urgency of 200/130. The man reported an intermittent non-productive cough of approximately one year's duration and worsening dyspnea on exertion and orthopnea over the last month with lower extremity swelling. Of note, he emigrated from Honduras twenty years ago. Blood pressure normalized with administration of Lasix in the ED. Physical exam revealed rales in lung bases bilaterally, jugular venous distension, lower extremity pitting edema with serpiginous patches of erythema and excoriation, and a cardiac gallop...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28412431/3d-morphological-changes-in-lv-and-rv-during-lvad-ramp-studies
#17
Karima Addetia, Nir Uriel, Francesco Maffessanti, Gabriel Sayer, Sirtaz Adatya, Gene H Kim, Nitasha Sarswat, Savitri Fedson, Diego Medvedofsky, Eric Kruse, Keith Collins, Daniel Rodgers, Takayoshi Ota, Valluvan Jeevanandam, Victor Mor-Avi, Daniel Burkhoff, Roberto M Lang
OBJECTIVES: The purpose of this study was to investigate the differential impact of the 2 most commonly available left ventricular assist device (LVAD) types on the right (RV) and left (LV) ventricles using 3-dimensional (3D) echocardiography-based analysis of ventricular morphology. BACKGROUND: LVADs have emerged as common therapy for advanced heart failure. Recent data suggest that the heart responds differently to speed settings in the 2 main devices available (HeartMate II [HMII], St Jude Medical, Pleasanton, California, and HVAD, HeartWare International, Framingham, Massachusetts)...
April 7, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28412087/pregestational-type-2-diabetes-mellitus-induces-cardiac-hypertrophy-in-the-murine-embryo-through-cardiac-remodeling-and-fibrosis
#18
Xue Lin, Penghua Yang, E Albert Reece, Peixin Yang
BACKGROUND: Cardiac hypertrophy is highly prevalent in patients with type 2 diabetes mellitus (T2DM). Experimental evidence has implied that pregnant women with T2DM and their children are at an increased risk of cardiovascular diseases. Our previous mouse model study has revealed that maternal T2DM induces structural heart defects in their offspring. OBJECTIVE: The present study aims to determine whether maternal T2DM induces embryonic heart hypertrophy in a murine model of diabetic embryopathy...
April 12, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28410946/right-atrial-dysfunction-in-the-fetus-with-severely-regurgitant-tricuspid-valve-disease-a-potential-source-of-cardiovascular-compromise
#19
Lisa W Howley, Nee Scze Khoo, Anita J Moon-Grady, Sonali S Patel, Fayeza Alrais, Wayne Tworetzky, Timothy Colen, Paul Brooks, Jean Trines, Tiina Ojala, Lisa K Hornberger
BACKGROUND: In severe right heart obstruction (RHO), redistribution of cardiac output to the left ventricle (LV) is well tolerated by the fetal circulation. Although the same should be true of severely regurgitant tricuspid valve disease (rTVD) with reduced or no output from the right ventricle, affected fetuses more frequently develop hydrops or suffer intrauterine demise. We hypothesized that right atrium (RA) function is altered in rTVD but not in RHO, which could contribute to differences in outcomes...
April 11, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28410632/evolution-of-left-ventricular-size-in-late-survivors-of-surgery-for-hypoplastic-left-heart-syndrome
#20
Markus Bjurbom, Ajay J Iyengar, Florian Moenkemeyer, Igor E Konstantinov, Christian P Brizard, Yves d'Udekem
BACKGROUND: Aortic atresia and mitral atresia are predictors of adverse events in early life in patients with hypoplastic left heart syndrome, but it is unclear whether late outcomes are also affected, and whether this impact is related to a small hypertrophied left ventricle (LV) that impairs right ventricle (RV) function. METHODS: Thirty patients with hypoplastic left heart syndrome surviving with a Fontan procedure were identified. Follow-up echocardiograms were available at birth, before the Fontan procedure, and several years after...
April 12, 2017: Annals of Thoracic Surgery
keyword
keyword
9616
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"