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Right ventricle function

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https://www.readbyqxmd.com/read/29777281/right-ventricular-systolic-function-parameters-in-hypoplastic-left-heart-syndrome
#1
S Javed Zaidi, Jamie Penk, Vivian W Cui, Supaluck Kanjanauthai, David A Roberson
Assessment of the systolic function of the right ventricle (RV) in patients with hypoplastic left heart syndrome (HLHS) is important. The asymmetric shape and heavy trabeculations make accurate assessment of RV systolic function challenging. Novel measures of RV function could be helpful in distinguishing reduced versus preserved function in HLHS and may also be worse in HLHS with preserved function compared to normal controls. These novel methods offer promise, but research and clinical applicability is hindered as no cut-off values for normal function have been established...
May 18, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29777280/primary-draining-vein-stenting-for-obstructive-total-anomalous-pulmonary-venous-connection-in-neonates-with-right-atrial-isomerism-and-functional-single-ventricle-improves-outcome
#2
Masataka Kitano, Takaya Hoashi, Takashi Kakuta, Kazuto Fujimoto, Akira Miyake, Ken-Ichi Kurosaki, Hazime Ichikawa, Isao Shiraishi
For neonates with right atrial isomerism (RAI), functional single ventricle (f-SV), and obstructive total anomalous pulmonary venous connection (TAPVC), primary TAPVC repair (TAPVCR) has a poor outcome. At our hospital, the survival rate at 1 year of such neonates undergoing primary TAPVCR between 1999 and 2010 (TAPVCR group) was 30% (3/10). Most deceased cases suffered from capillary leak syndrome and unstable pulmonary resistance after the surgeries. We sought to determine whether less invasive primary draining vein stenting (DVS) improved the outcome of these neonates...
May 18, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29769222/transient-outward-k-current-i-to-underlies-the-right-ventricular-initiation-of-polymorphic-ventricular-tachycardia-in-a-transgenic-rabbit-model-of-long-qt-syndrome-type-1
#3
Bum-Rak Choi, Weiyan Li, Dmitry Terentyev, Anatoli Y Kabakov, Mingwang Zhong, Colin M Rees, Radmila Terentyeva, Tae Yun Kim, Zhilin Qu, Xuwen Peng, Alain Karma, Gideon Koren
BACKGROUND: Sudden death in long-QT syndrome type 1 (LQT1), an inherited disease caused by loss-of-function mutations in KCNQ1, is triggered by early afterdepolarizations (EADs) that initiate polymorphic ventricular tachycardia (pVT). We investigated ionic mechanisms that underlie pVT in LQT1 using a transgenic rabbit model of LQT1. METHODS: Optical mapping, cellular patch clamping, and computer modeling were used to elucidate the mechanisms of EADs in transgenic LQT1 rabbits...
June 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29769130/diagnostic-accuracy-of-low-dose-dual-source-cardiac-computed-tomography-as-compared-to-surgery-in-univentricular-heart-patients
#4
Narumol Chaosuwannakit, Pattarapong Makarawate
BACKGROUND: To evaluate the ability of low radiation dose dual-source computed tomography (DSCT) to depict the features of morphological univentricular heart and to define accuracy by comparing findings with surgery. METHODS: Low radiation dose dual-source cardiac computed tomography (CCT) of 33 cases of functional univentricular heart preliminary diagnosis by echocardiography compared with the results of surgery were retrospectively analyzed (aged 1 day to 4 years, median 5 months)...
May 16, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29763366/right-ventricle-performances-with-echocardiography-and-99m-tc-myocardial-perfusion-imaging-in-pulmonary-arterial-hypertension-patients
#5
Jie Liu, Lei Fei, Guang-Qing Huang, Xiao-Ke Shang, Mei Liu, Zhi-Jun Pei, Yong-Xue Zhang
Right heart catheterization is commonly used to measure right ventricle hemodynamic parameters and is the gold standard for pulmonary arterial hypertension diagnosis; however, it is not suitable for patients' long-term follow-up. Non-invasive echocardiography and nuclear medicine have been applied to measure right ventricle anatomy and function, but the guidelines for the usefulness of clinical parameters remain to be established. The goal of this study is to identify reliable clinical parameters of right ventricle function in pulmonary arterial hypertension patients and analyze the relationship of these clinical parameters with the disease severity of pulmonary arterial hypertension...
May 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29759779/16-years-of-cardiac-resynchronization-pacing-among-congenital-heart-disease-patients-direct-contractility-dp-dt-max-screening-when-the-guidelines-do-not-apply
#6
Peter P Karpawich, Neha Bansal, Sharmeen Samuel, Yamuna Sanil, Kathleen Zelin
OBJECTIVES: The purpose of this study was to use direct cardiac resynchronization therapy (CRT)-paced contractility (dP/dt-max) response as a pre-implantation evaluation among patients with congenital heart disease (CHD) and follow clinical parameters and contractility indexes after CRT implantation. BACKGROUND: Patients with CHD often develop early heart failure with few therapeutic options, leading to heart transplantation (HT). Unfortunately, guidelines for CRT do not apply, and function evaluations by cardiac ultrasound are often inaccurate among CHD anatomies...
August 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29756685/evaluation-of-right-ventricular-myocardial-strains-by-speckle-tracking-echocardiography-after-percutaneous-device-closure-of-atrial-septal-defects-in-children
#7
Qiuqin Xu, Ling Sun, Wanping Zhou, Yunjia Tang, Yueyue Ding, Jie Huang, Hui Wang, Cui Hou, Haitao Lv
OBJECTIVES: The aim of this study was to clarify the influence of the ASD closure by occluder device on right ventricular acute and long-term changes in longitudinal systolic strains, by evaluating right ventricular wall deformation in children using speckle tracking echocardiography (STE). METHODS AND MATERIALS: We enrolled 30 children with ASDs and 40 controls in our study. The Amplatzer atrial defect occluder was used to close the ASDs. Transthoracic echocardiographic examinations were performed at 3 points in time: the day before closure, 1 day after closure, and 3 months after closure...
May 14, 2018: Echocardiography
https://www.readbyqxmd.com/read/29756230/the-relationship-between-pulmonary-artery-wedge-pressure-and-pulmonary-blood-volume-derived-from-contrast-echocardiography-a-proof-of-concept-study
#8
Ken Monahan, Daniel Lenihan, Evan L Brittain, Linda Saliba, Robert N Piana, Leslie L Robison, Melissa M Hudson, Gregory T Armstrong
BACKGROUND: Pulmonary transit time (PTT) obtained from contrast echocardiography is a marker of global cardiopulmonary function. Pulmonary blood volume (PBV), derived from PTT, may be a noninvasive surrogate for left-sided filling pressures, such as pulmonary artery wedge pressure (PAWP). We sought to assess the relationship between PBV obtained from contrast echocardiography and PAWP. METHODS: Participants were adult survivors of childhood cancer that had contrast echocardiography performed nearly simultaneously with right-heart catheterization...
May 14, 2018: Echocardiography
https://www.readbyqxmd.com/read/29755795/double-bolus-alteplase-therapy-during-cardiopulmonary-resuscitation-for-cardiac-arrest-due-to-massive-pulmonary-embolism-guided-by-focused-bedside-echocardiography
#9
Hafiz B Mahboob, Bruce W Denney
Massive pulmonary embolism (PE) frequently leads to cardiac arrest (CA) which carries an extremely high mortality rate. Although available, randomized trials have not shown survival benefits from thrombolytic use. Thrombolytics however have been used successfully during resuscitation in clinical practice in multiple case reports and in retrospective studies. Recent resuscitation guidelines recommend using alteplase for PE related CA; however they do not offer a standardized treatment regimen. The most consistently applied approach is an intravenous bolus of 50 mg tissue plasminogen activator (t-PA) early during cardiopulmonary resuscitation (CPR)...
2018: Case Reports in Critical Care
https://www.readbyqxmd.com/read/29750156/right-ventricle-remodeling-and-function-in-scleroderma-patients
#10
REVIEW
Roxana Cucuruzac, Iolanda Muntean, Imre Benedek, Andras Mester, Nora Rat, Adriana Mitre, Monica Chitu, Theodora Benedek
Scleroderma, known also as systemic sclerosis (SSc), is a severe disease associated with high mortality rates, and right ventricular (RV) remodeling and dysfunction, along with pulmonary artery hypertension (PAH), are among the most important internal organ manifestations of this disease. PAH has a higher prevalence in patients with SSc compared to the general population and represents a significant predictor of mortality in SSc. In patients with SSc, the morphological remodeling and alteration of RV function begin even before the setting of PAH and lead to development of a specific adaptive pattern of the RV which is different from the one recorded in patients with IAPH...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29749646/left-and-right-ventricular-morphology-and-function-in-athletes-with-elevated-pulmonary-systolic-arterial-pressure
#11
Oana Mirea, Oana M Corîci, Octavian Istrătoaie, Ionuț Donoiu, Maria Iancău, Constantin Militaru
OBJECTIVES: The objective of the study was to evaluate the prevalence and potential impact of elevated pulmonary arterial systolic pressure (PASP) on left and right cardiac morphology and function in young elite athletes. METHODS: In total, 85 professional athletes (40 endurance, 20 strength, and 25 mixed training, mean age 17.8 ± 4.0) and 50 sedentary controls (mean age 18.6 ± 3.3) underwent transthoracic echocardiographic examination. Two-dimensional measurements of the right (RV) and left ventricle (LV) were obtained...
May 11, 2018: Echocardiography
https://www.readbyqxmd.com/read/29748699/longitudinal-deformation-of-the-right-ventricle-in-hypoplastic-left-heart-syndrome-a-comparative-study-of-2d-feature-tracking-magnetic-resonance-imaging-and-2d-speckle-tracking-echocardiography
#12
Mona Salehi Ravesh, Carsten Rickers, Finn Jonathan Bannert, David Hautemann, Abdullah Al Bulushi, Dominik Daniel Gabbert, Philip Wegner, Eva Kis, Jan Hinnerk Hansen, Michaeal Jerosch-Herold, H-H Kramer, Jana Logoteta
In hypoplastic left heart syndrome (HLHS), long-term outcome is closely related to right ventricular function. Echocardiography and magnetic resonance imaging (MRI) are routinely used for functional assessment. MRI 2D-tissue feature tracking (2D-FT) allows quantification of myocardial deformation but has not yet been applied to HLHS patients. We sought to investigate the feasibility of this technique and to compare the results to 2D-speckle tracking echocardiography (2D-STE). In routine MRI 2D anatomical four chamber view, cine images were recorded in 55 HLHS patients (median age 4...
May 10, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29748074/-altitude-and-the-right-heart
#13
REVIEW
R Naeije
INTRODUCTION: Altitude is associated with a decrease in partial pressure of oxygen. Hypoxia induces pulmonary vasoconstriction with subsequent fixed increase in pulmonary artery pressure, and eventual right heart failure. CURRENT KNOWLEDGE: High altitude exposure is associated with an increase in pulmonary artery pressure that is proportional to initial vasoconstriction. Echocardiographic evaluations on a large number of subjects show that the altitude-induced increase in pulmonary pressure is generally modest and does not exceed the 25mmHg that are diagnostic of pulmonary hypertension...
May 7, 2018: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/29747850/imaging-right-left-ventricular-interactions
#14
REVIEW
Mark K Friedberg
The impact of one ventricle on the adjacent ventricle plays a key role in cardiac function. Ventricular-ventricular interactions are based on the arrangement in-series of the circulation and common pericardium, interventricular septum, and myocardial tracts. Imaging, in particular echocardiography, plays a central role in characterizing these interactions through geometric indices, septal configuration and motion, Doppler flow, timing of events in the ventricles and alterations in strain, remodeling, and diastolic filling with altered loading of the contralateral ventricle...
May 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29745527/-the-research-on-cardiac-volume-time-relationship-based-on-retrospective-electrocardiograph-four-dimension-computer-tomography-data-collection-and-structured-sparse-algorithm
#15
Meng Li, Peng Zhao, Jingjing Xiao, Linbo Qiao, Wencai Pan, Shuang Wang, Yinbao Chong
This paper explores the relationship between the cardiac volume and time, which is applied to control dynamic heart phantom. We selected 50 patients to collect their cardiac computed tomography angiography (CTA) images, which have 20 points in time series CTA images using retrospective electrocardiograph gating, and measure the volume of four chamber in 20-time points with cardiac function analysis software. Then we grouped patients by gender, age, weight, height, heartbeat, and utilize repeated measurement design to conduct statistical analyses...
April 1, 2018: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29744563/diagnostic-workup-etiologies-and-management-of-acute-right-ventricle-failure-a-state-of-the-art-paper
#16
REVIEW
Antoine Vieillard-Baron, R Naeije, F Haddad, H J Bogaard, T M Bull, N Fletcher, T Lahm, S Magder, S Orde, G Schmidt, M R Pinsky
INTRODUCTION: This is a state-of-the-art article of the diagnostic process, etiologies and management of acute right ventricular (RV) failure in critically ill patients. It is based on a large review of previously published articles in the field, as well as the expertise of the authors. RESULTS: The authors propose the ten key points and directions for future research in the field. RV failure (RVF) is frequent in the ICU, magnified by the frequent need for positive pressure ventilation...
May 9, 2018: Intensive Care Medicine
https://www.readbyqxmd.com/read/29744001/rapid-left-ventricular-recovery-after-correction-of-a-secundum-atrial-septal-defect-understanding-the-hemodynamics
#17
Akanksha N Thakkar, Mahwash Kassi, C Huie Lin
Closure of an atrial septal defect (ASD) may lead to a change in the function of both ventricles. Although right ventricular function typically improves, the left ventricle (LV) may behave in different ways. This has been a matter of much debate, with some authors reporting a decline in LV function after ASD closure and others reporting delayed improvement or no identifiable change. We report the case of a 41-year-old female with a large left-to-right ASD shunt (Qp:Qs 2.3:1 and shunt volume 3.6 L/min) who presented with biventricular systolic dysfunction that improved within 24 hours of ASD closure...
July 2017: Methodist DeBakey Cardiovascular Journal
https://www.readbyqxmd.com/read/29730148/mri-derived-regional-biventricular-function-in-patients-with-chronic-thromboembolic-pulmonary-hypertension-before-and-after-pulmonary-endarterectomy
#18
Sabine K Maschke, Christian O Schoenfeld, Till F Kaireit, Serghei Cebotari, Karen Olsson, Marius Hoeper, Frank Wacker, Jens Vogel-Claussen
RATIONALE AND OBJECTIVES: The aim of this study was to assess regional myocardial function in patients with chronic thromboembolic hypertension (CTEPH) before and after successful pulmonary endarterectomy (PEA) using magnetic resonance imaging. METHODS: Twenty-two patients with CTEPH underwent cardiac magnetic resonance imaging before and 12 (11, 17) days after PEA. Mean pulmonary artery pressure was evaluated preoperatively by right heart catheterization and during post-PEA intensive care unit-stay using a Swan-Ganz catheter...
May 2, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29719528/co-occurrence-of-pheochromocytoma-paraganglioma-and-cyanotic-congenital-heart-disease-a-case-report-and-literature-review
#19
Bingbin Zhao, Yi Zhou, Yi Zhao, Yumo Zhao, Xingcheng Wu, Yalan Bi, Yufeng Luo, Zhigang Ji, Shi Rong
Pheochromocytoma and paraganglioma (PHEO-PGL) and cyanotic congenital heart disease (CCHD) are both rare diseases. We reported a 30-year-old patient with a right adrenal gland nodule and a retroperitoneal mass and history of functional single atrium and ventricle. 123 I-metaiodobenzylguanidine scintigraphy showed intense uptake in both lesions. Laboratory investigation demonstrated elevated urinary norepinephrine. Preoperative α-blockade was initiated. A successful open resection of right adrenal and retroperitoneal masses was performed...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29717224/an-optical-method-for-the-in-vivo-characterization-of-the-biomechanical-response-of-the-right-ventricle
#20
A Soltani, J Lahti, K Järvelä, S Curtze, J Laurikka, M Hokka, V-T Kuokkala
The intraoperative in-vivo mechanical function of the left ventricle has been studied thoroughly using echocardiography in the past. However, due to technical and anatomical issues, the ultrasound technology cannot easily be focused on the right side of the heart during open-heart surgery, and the function of the right ventricle during the intervention remains largely unexplored. We used optical imaging and digital image correlation for the characterization of the right ventricle motion and deformation during open-heart surgery...
May 1, 2018: Scientific Reports
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