Read by QxMD icon Read

Right ventricular

Narayan R Kissoon, Bryan C Hoelzer, David P Martin, Tim J Lamer
BACKGROUND: New advances in spinal cord stimulation have led to improved treatment of patients suffering from chronic pain. While the overall safety of newer stimulation devices has been established, no published reports exist regarding safety considerations when these devices are implanted in patients with a preexisting cardiac device. CASE REPORT: An 83-year-old man with a history of out-of-hospital cardiac arrest secondary to an episode of ventricular fibrillation underwent automated implantable cardiac defibrillator placement...
October 22, 2016: Pain Practice: the Official Journal of World Institute of Pain
Lijiang Ma, Wendy K Chung
Group 1 pulmonary hypertension or pulmonary arterial hypertension (PAH) is a rare disease characterized by proliferation and occlusion of small pulmonary arterioles, leading to progressive elevation of pulmonary artery pressure and pulmonary vascular resistance, and right ventricular failure. Historically it has been associated with a high mortality rate, although over the last decade, treatment has improved survival. PAH includes idiopathic PAH (IPAH), heritable PAH (HPAH), and PAH associated with certain medical conditions...
October 22, 2016: Journal of Pathology
Ahmad Masri, Vidyasagar Kalahasti, Lars G Svensson, Eric E Roselli, Douglas Johnston, Donald Hammer, Paul Schoenhagen, Brian P Griffin, Milind Y Desai
BACKGROUND: -In patients with a dilated proximal ascending aorta and trileaflet aortic valve (TAV), we sought to assess a) factors independently associated with increased long-term mortality and b) the incremental prognostic utility of indexing aortic root to patient height. METHODS: -We studied consecutive patients with a dilated aortic root (≥4 cm) that underwent echocardiography and gated contrast-enhanced thoracic aortic computed tomography or magnetic resonance angiography between 2003-2007...
October 21, 2016: Circulation
Per Martin Arvidsson, Johannes Töger, Marcus Carlsson, Katarina Steding-Ehrenborg, Gianni Pedrizzetti, Einar Heiberg, Hakan Arheden
Intracardiac blood flow is driven by hemodynamic forces that are exchanged between the blood and myocardium. Previous studies have been limited to 2D measurements or investigated only LV forces. Right ventricular forces and their mechanistic contribution to asymmetric redirection of flow in the RV have not been measured. We therefore aimed to quantify three-dimensional hemodynamic forces in both ventricles in a cohort of healthy subjects, using magnetic resonance imaging 4D flow measurements. 25 controls,14 elite endurance athletes, and two patients with left ventricular dyssynchrony were included...
October 21, 2016: American Journal of Physiology. Heart and Circulatory Physiology
J Vila, R Pariaut, N S Moïse, E M Oxford, P R Fox, C A Reynolds, C Saelinger
OBJECTIVE: To investigate the expression and distribution of desmosomal and gap junction proteins of the intercalated disc in the atria of boxers with arrhythmogenic right ventricular cardiomyopathy (ARVC). ANIMALS: Nineteen control dogs and 13 boxers with histopathologically confirmed ARVC. METHODS: Right and left atrial samples were examined using immunofluorescence and Western blots. The intercalated disc proteins investigated included total and phosphorylated connexin43 (Cx43 and pCx43), connexin45, connexin40, plakoglobin, plakophilin-2, desmoplakin, and N-cadherin...
October 18, 2016: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
Hidehiro Kaneko, Michael Neuss, Jens Weissenborn, Christian Butter
Functional mitral regurgitation (MR) is common in patients with heart failure and left ventricular (LV) dysfunction. MitraClip (MC) is a novel therapeutic option for patients with high-risk MR. Similar to LV dysfunction, right ventricular dysfunction (RVD) is an important predictor of patients with heart failure. We aimed to clarify the effect of RVD on outcomes of functional MR and LV dysfunction after MC implantation. We examined 117 patients with severe functional MR and reduced LV ejection fraction (≤40%) treated with MC...
August 30, 2016: American Journal of Cardiology
Jacob J Glaser, Cassandra Cardarelli, Samuel Galvagno, Thomas M Scalea, Sarah B Murthi
BACKGROUND: Point-of-care ultrasound often includes cardiac ultrasound. It is commonly used to evaluate cardiac function in critically ill patients but lacks the specific quantitative anatomic assessment afforded by standard transthoracic echocardiography (TTE). We developed the Focused Rapid Echocardiographic Examination (FREE), a hybrid between a cardiac ultrasound and TTE that places an emphasis on cardiac function rather than anatomy. We hypothesized that data obtained from FREE correlate well with TTE while providing actionable information for clinical decision making...
November 2016: Journal of Trauma and Acute Care Surgery
Daniel Verdini, Daniel Vargas, Anderson Kuo, Brian Ghoshhajra, Phillip Kim, Horacio Murillo, Jacobo Kirsch, Michael Lane, Carlos Restrepo
PURPOSE: Coronary-pulmonary arterial fistulas (CPAFs) are rare coronary artery anomalies that have been described only in limited case reports. This study aims to evaluate the clinical presentation and imaging findings of CPAFs collected from 6 participating medical centers along with CPAFs reported in the literature, to discern any general trends present in CPAFs. MATERIALS AND METHODS: A total of 25 cases of CPAF diagnosed by coronary computed tomography angiography were collected across 6 participating institutions...
November 2016: Journal of Thoracic Imaging
Michael E Rezaee, Elizabeth L Nichols, Mandeep Sidhu, Jeremiah R Brown
BACKGROUND: Pulmonary hypertension (PH) is a well-recognized complication of left ventricular heart failure (HF). HYPOTHESIS: Differences exist in demographic, clinical, hemodynamic, and survival characteristics of patients with left ventricular HF who have combined postcapillary and precapillary PH (CpcPH), isolated postcapillary PH, or no PH. METHODS: A secondary data analysis was conducted using a large prospective database of patients undergoing right heart catheterization from 1994 to 2012...
October 21, 2016: Clinical Cardiology
David Snipelisky, Yogesh N V Reddy, Kevin Manocha, Aalok Patel, Shannon M Dunlay, Paul A Friedman, Thomas M Munger, Samuel J Asirvatham, Douglas L Packer, Yong-Mei Cha, Suraj Kapa, Peter A Brady, Peter A Noseworthy, Joseph J Maleszewski, Siva K Mulpuru
BACKGROUND: Patients with advanced heart failure (HF) are predisposed to ventricular arrhythmias (VA), particularly following implantation of an LVAD. There is minimal evidence for appropriate management strategies. OBJECTIVES: This study aimed to compare the burden of VA and response to ablation performed either before or following left ventricular assist device (LVAD) implantation. METHODS: We created a retrospective cohort of patients who underwent both VA ablation and HeartMate II (Thoratec, CA) LVAD implantation at Mayo Clinic (Rochester, MN)...
October 21, 2016: Journal of Cardiovascular Electrophysiology
Anukul Ghimire, Mads Andersen, Lindsay M Burrowes, James Christopher Bouwmeester, Andrew D Grant, Israel Belenkie, Nowell M Fine, Barry A Borlaug, John V Tyberg
Using the reservoir-wave approach (RWA) we previously characterized pulmonary vasculature mechanics in a normal canine model. We found reflected backward-travelling waves that decrease pressure and increase flow in the proximal pulmonary artery (PA). These waves decrease right ventricular (RV) afterload and facilitate RV ejection. With pathological alterations to the pulmonary vasculature, these waves may change and impact RV performance. Our objective in this study was to characterize PA wave reflection and the alterations in RV performance in cardiac patients, using the RWA...
October 20, 2016: Journal of Applied Physiology
Kapil Suchal, Salma Malik, Nanda Gamad, Rajiv Kumar Malhotra, Sameer N Goyal, Jagriti Bhatia, Dharamvir Singh Arya
BACKGROUND: Myocardial infarction (MI) continues to be associated with high morbidity and mortality worldwide despite the availability of current therapeutic modalities. Kaempferol (KMP), a dietary flavonoid, possesses good antioxidant, immunomodulatory and anti-apoptotic properties and has been evaluated in the present study for its role in mitigating myocardial injury following MI. PURPOSE: In this study, the ability of KMP to protect heart against isoproterenol (ISO) induced oxidative stress and myocardial infarction was evaluated...
November 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
Patrick Krumm, Karin A L Mueller, Karin Klingel, Ulrich Kramer, Marius S Horger, Tanja Zitzelsberger, Reinhard Kandolf, Meinrad Gawaz, Konstantin Nikolaou, Bernhard D Klumpp, Joerg C Henes
BACKGROUND: To determine morphological and functional cardiovascular magnetic resonance (CMR) patterns in histopathologically confirmed myocardial involvement in patients with systemic sclerosis (SSc). METHODS: Twenty patients (6 females; mean age 41 ± 11 years) with histopathologically proven cardiac involvement in SSc in the years 2008-2016 were retrospectively evaluated. Morphological, functional and late gadolinium enhancement (LGE) images were acquired in standard angulations at 1...
October 21, 2016: Journal of Cardiovascular Magnetic Resonance
Mariann Gyöngyösi, Georgiana-Aura Giurgea, Bonni Syeda, Silvia Charwat, Beatrice Marzluf, Julia Mascherbauer, Andras Jakab, Abelina Zimba, Márta Sárközy, Noemi Pavo, Heinz Sochor, Senta Graf, Irene Lang, Gerald Maurer, Jutta Bergler-Klein
OBJECTIVE: The long-term (5-year) outcome of early (3-6 weeks after acute myocardial infarction [AMI], BM-MNC Early group) and late (3-4 months after AMI, BM-MNC Late group) combined (percutaneous intramyocardial and intracoronary) delivery of autologous bone marrow mononuclear cells (BM-MNCs) was evaluated in patients with ejection fractions (EF) between 30-45% post-AMI. METHODS: Major adverse cardiac and cerebrovascular events (MACCE) and hospitalization were recorded...
2016: PloS One
Oholi Tovia-Brodie, Bernard Belhassen, Aharon Glick, Haim Shmilovich, Galit Aviram, Raphael Rosso, Yoav Michowitz
INTRODUCTION: A new imaging software (CARTO® Segmentation Module, Biosense Webster) allows pre-procedural 3-D reconstruction of all heart chambers based on cardiac CT. We describe our initial experience with the new module during ablation of ventricular arrhythmias. METHODS AND RESULTS: Eighteen consecutive patients with idiopathic ventricular arrhythmias or ischemic ventricular tachycardia (VT) were studied. In the latter group, a combined endocardial and epicardial ablation was performed...
October 20, 2016: Journal of Cardiovascular Electrophysiology
Suresh Chengode
The left ventricle, with its thickened myocardial walls, unlike the right ventricle has no measurable geometric shape. It has a conical apex and its function quantification, needs intensive, 2D, 3D and M mode transesophageal echocardiography, which is described in this review.
October 2016: Annals of Cardiac Anaesthesia
Thomas McCaffrey, Michela Guglieri, Alexander P Murphy, Katherine Md Bushby, Anna Johnson, John P Bourke
Introduction The significance of abnormal cardiac measures in asymptomatic females who harbor dystrophin gene mutations is controversial. Methods Echo-measures of ventricular function were compared with published norms in a cross-sectional study of 130 (age 39 ± 15.7 years) 'carriers' of Duchenne or Becker muscular dystrophy (DBMD). Correlations between cardiomyopathy (CM) and mutation, CK levels, age, and muscle symptoms were investigated. Results Depending on definition, CM prevalence was 3-33%. Ejection fraction (Simpson) was < 55% in 9 (13%) and < 40% in 2 (2...
October 19, 2016: Muscle & Nerve
Gisele de A Padilha, Lucas F B Horta, Lillian Moraes, Cassia L Braga, Milena V Oliveira, Cíntia L Santos, Isalira P Ramos, Marcelo M Morales, Vera Luiza Capelozzi, Regina C S Goldenberg, Marcelo Gama de Abreu, Paolo Pelosi, Pedro L Silva, Patricia R M Rocco
BACKGROUND: In patients with emphysema, invasive mechanical ventilation settings should be adjusted to minimize hyperinflation while reducing respiratory effort and providing adequate gas exchange. We evaluated the impact of pressure-controlled ventilation (PCV) and pressure support ventilation (PSV) on pulmonary and diaphragmatic damage, as well as cardiac function, in experimental emphysema. METHODS: Emphysema was induced by intratracheal instillation of porcine pancreatic elastase in Wistar rats, once weekly for 4 weeks...
December 2016: Intensive Care Medicine Experimental
John P Martin-Beaulieu, Karen M Myrick, Thomas Martin, Rachel W Pata, Richard S Feinn
Electrocardiographic changes can be present in marathon runners. These findings may be misinterpreted as malignant by healthcare providers. For example, incomplete right bundle branch block, early ventricular repolarization, and left ventricular hypertrophy by voltage criteria alone are quite common in athletes, yet considered benign.
October 2016: Clinical Case Reports
Nobuyuki Murakoshi, Kazutaka Aonuma
Drug treatment and/or implantable cardioverter defibrillator (ICD) implantation are the most widely accepted first-line therapies for channelopathic patients who have recurrent syncope, sustained ventricular tachycardia (VT), or documented ventricular fibrillation (VF), or are survivors of cardiac arrest. In recent years, there have been significant advances in mapping techniques and ablation technology, coupled with better understanding of the mechanisms of ventricular tachyarrhythmia in channelopathies. Catheter ablation has provided important insights into the role of the Purkinje network and the right ventricular outflow tract in the initiation and perpetuation of VT/VF, and has evolved as a promising treatment modality for ventricular tachyarrhythmia even in channelopathies...
October 2016: Journal of Arrhythmia
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"