keyword
MENU ▼
Read by QxMD icon Read
search

Right ventricle assessment

keyword
https://www.readbyqxmd.com/read/28333429/multimodality-imaging-to-plan-and-guide-transcatheter-tricuspid-valve-interventions
#1
Edgard A Prihadi, Victoria Delgado, Jeroen J Bax
Tricuspid regurgitation (TR) is a highly prevalent valvular heart disease. The natural history of untreated significant TR portends an unfavourable outcome, but only a minority of patients is currently referred for surgical treatment. Organic TR (caused by primary abnormality of the leaflets) is relatively infrequent whereas secondary or functional TR (caused by dilatation of the tricuspid annulus, right ventricle [RV] and right atrium) is the predominant mechanism. The success of transcatheter therapies for left valvular heart disease over the last decade, has fuelled similar development of novel transcatheter devices for the treatment of TR...
March 23, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28330950/pressure-overload-leads-to-an-increased-accumulation-and-activity-of-mast-cells-in-the-right-ventricle
#2
Himal Luitel, Akylbek Sydykov, Yves Schymura, Argen Mamazhakypov, Wiebke Janssen, Kabita Pradhan, Astrid Wietelmann, Djuro Kosanovic, Bhola Kumar Dahal, Norbert Weissmann, Werner Seeger, Friedrich Grimminger, Hossein Ardeschir Ghofrani, Ralph Theo Schermuly
Right ventricular (RV) remodeling represents a complex set of functional and structural adaptations in response to chronic pressure or volume overload due to various inborn defects or acquired diseases and is an important determinant of patient outcome. However, the underlying molecular mechanisms remain elusive. We investigated the time course of structural and functional changes in the RV in the murine model of pressure overload-induced RV hypertrophy in C57Bl/6J mice. Using magnetic resonance imaging, we assessed the changes of RV structure and function at different time points for a period of 21 days...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28329231/cardiac-protective-effects-of-remote-ischaemic-preconditioning-in-children-undergoing-tetralogy-of-fallot-repair-surgery-a-randomized-controlled-trial
#3
Qingping Wu, Tingting Wang, Shiqiang Chen, Quanjun Zhou, Haobo Li, Na Hu, Yinglu Feng, Nianguo Dong, Shanglong Yao, Zhengyuan Xia
Aims: Remote ischaemic preconditioning (RIPC) by inducing brief ischaemia in distant tissues protects the heart against myocardial ischaemia-reperfusion injury (IRI) in children undergoing open-heart surgery, although its effectiveness in adults with comorbidities is controversial. The effectiveness and mechanism of RIPC with respect to myocardial IRI in children with tetralogy of Fallot (ToF), a severe cyanotic congenital cardiac disease, undergoing open heart surgery are unclear. We hypothesized that RIPC can confer cardioprotection in children undergoing ToF repair surgery...
February 18, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28325518/the-impact-of-age-and-gender-on-right-ventricular-diastolic-function-among-healthy-adults
#4
Antonello D'Andrea, Olga Vriz, Andreina Carbone, Francesco Ferrara, Marco Di Maio, Rosangela Cocchia, Gianluigi Tagliamonte, Edwige Acri, Caterina Driussi, Enrica Pezzullo, Rodolfo Citro, Antonio Cittadini, Raffaele Calabrò, Maria Giovanna Russo, Eduardo Bossone
BACKGROUND: Doppler echocardiography is ideally suited for assessment of diastolic function, being widely available, non-invasive, and less expensive than other techniques. However, data regarding age- and gender-matched reference values of right ventricular diastolic function are limited. This study aims to explore the physiologic variations of right ventricle (RV) diastolic function in a large cohort of healthy adults, and to investigate clinical and echocardiographic correlates. METHODS: From June 2007 to February 2014, 1168 healthy Caucasian subjects [mean age 45...
March 18, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28303211/real-time-three-dimensional-echocardiography-characterization-of-cardiac-anatomy-and-function-current-clinical-applications-and-literature-review-update
#5
REVIEW
Omar Velasco, Morgan Q Beckett, Aaron W James, Megan N Loehr, Taylor G Lewis, Tahmin Hassan, Rajesh Janardhanan
Our review of real-time three-dimensional echocardiography (RT3DE) discusses the diagnostic utility of RT3DE and provides a comparison with two-dimensional echocardiography (2DE) in clinical cardiology. A Pubmed literature search on RT3DE was performed using the following key words: transthoracic, two-dimensional, three-dimensional, real-time, and left ventricular (LV) function. Articles included perspective clinical studies and meta-analyses in the English language, and focused on the role of RT3DE in human subjects...
2017: BioResearch Open Access
https://www.readbyqxmd.com/read/28302319/high-sensitivity-cardiac-troponin-t-and-systemic-right-ventricular-function-in-adults-with-congenitally-corrected-transposition-of-the-great-arteries
#6
Ewa Kowalik, Anna Klisiewicz, Justyna Rybicka, Elżbieta K Biernacka, Piotr Hoffman
BACKGROUND: High sensitive troponin T (hsTnT), a marker of myocardial injury, appears to be a promising diagnostic tool in patients with congenital heart disease. However, little is known about its distribution among adults with systemic right ventricle (sRV). We aimed to assess the distribution of hsTnT concentrations in patients with congenitally corrected transposition of the great arteries (ccTGA) and to evaluate its relationship with sRV function and NT-proBNP. METHODS: A cross-sectional study of adults with ccTGA was conducted...
March 11, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28295525/advantages-and-pitfalls-of-pocket-ultrasound-vs-daily-chest-radiography-in-the-coronary-care-unit-a-single-user-experience
#7
Colin T Phillips, Warren J Manning
BACKGROUND: Pocket ultrasonography may enhance patient diagnosis and care. We sought to assess pocket ultrasound in detecting common conditions in the coronary care unit (CCU) compared to portable daily chest radiography (CXR) and conventional transthoracic echocardiography (TTE). METHODS: An experienced pocket ultrasound user performed a pocket ultrasound examination for interstitial edema, pneumonia, central line seen in the right ventricle, pleural and pericardial effusions, left atrial enlargement, and cardiomegaly...
March 14, 2017: Echocardiography
https://www.readbyqxmd.com/read/28293551/timely-pulmonary-valve-replacement-may-allow-preservation-of-left-ventricular-circumferential-strain-in-patients-with-tetralogy-of-fallot
#8
Barbara E U Burkhardt, Marí Nieves Velasco Forte, Saravanan Durairaj, Isma Rafiq, Israel Valverde, Animesh Tandon, John Simpson, Tarique Hussain
INTRODUCTION: Patients with Tetralogy of Fallot (TOF) and pulmonary insufficiency and a dilated right ventricle (RV) may suffer from a reduction in left ventricular (LV) performance. It is not clear whether timely pulmonary valve replacement (PVR) preserves LV mechanics. METHODS: Ten TOF patients who underwent PVR were identified from hospital records, and pre- and postoperative cardiac magnetic resonance images were post-processed with a semi-automatic tissue tracking software...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28288690/dirofilaria-immitis-in-pinnipeds-and-a%C3%A2-new-host-record
#9
Ana Margarida Alho, Inês Marcelino, Vito Colella, Carla Flanagan, Nuno Silva, Jorge Jesus Correia, Maria Stefania Latrofa, Domenico Otranto, Luís Madeira de Carvalho
BACKGROUND: Dirofilaria immitis is a mosquito-borne pathogen that is spreading worldwide, and the associated infection (i.e. dirofilariosis) is becoming a threat to animals and humans living in endemic areas. Little is known about the occurrence and risk of infection of D. immitis in pinnipeds. Here we report dirofilariosis by D. immitis in several pinniped species kept in captivity in Portugal. METHODS: Animals were housed in an oceanographic park located in Algarve, southern Portugal, a geographical area endemic for canine dirofilariosis...
March 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28287603/shunt-surgery-right-heart-catheterization-and-vascular-morphometry-in-a-rat-model-for-flow-induced-pulmonary-arterial-hypertension
#10
Diederik E van der Feen, Michel Weij, Annemieke Smit-van Oosten, Lysanne M Jorna, Quint A J Hagdorn, Beatrijs Bartelds, Rolf M F Berger
In this protocol, PAH is induced by combining a 60 mg/kg monocrotalin (MCT) injection with increased pulmonary blood flow through an aorto-caval shunt (MCT+Flow). The shunt is created by inserting an 18-G needle from the abdominal aorta into the adjacent caval vein. Increased pulmonary flow has been demonstrated as an essential trigger for a severe form of PAH with distinct phases of disease progression, characterized by early medial hypertrophy followed by neointimal lesions and the progressive occlusion of the small pulmonary vessels...
February 11, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28281729/assessment-of-the-systemic-right-ventricular-function-in-overweight-and-obese-patients-with-congenitally-corrected-transposition-of-the-great-arteries
#11
Ewa Kowalik, Anna Klisiewicz, Elżbieta K Biernacka, Piotr Hoffman
BACKGROUND: In congenitally corrected transposition of the great arteries the right ventricle supports systemic circulation and patients are prone to develop heart failure over time. Chronic volume overload secondary to obesity may contribute to premature dysfunction of the systemic right ventricle. AIM: The aim of our study was to assess the systemic right ventricular function in overweight/obese adult patients with congenitally corrected transposition of the great arteries...
March 10, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28278380/right-ventricle-vasculature-in-human-pulmonary-hypertension-assessed-by-stereology
#12
Brian B Graham, Dan Koyanagi, Balasubramaniyam Kandasamy, Rubin M Tuder
No abstract text is available yet for this article.
March 9, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28274523/intraoperative-stenting-of-pulmonary-artery-stenosis-in-children-with-congenital-heart-disease
#13
Mathilde Meot, Bruno Lefort, Jean Marc El Arid, Nathalie Soulé, Julie Lothion-Boulanger, François Lengellé, Alain Chantepie, Paul Neville
BACKGROUND: Branch pulmonary artery (BPA) stenosis is frequently associated with congenital heart disease. Management of BPA stenosis is challenging for surgeons due to a high rate of recurrence. The purpose of this study was to assess the results of intraoperative pulmonary artery stenting associated with or without surgical angioplasty. METHODS: We included 33 children from our center between January 2008 and July 2014. Patients had pulmonary atresia with ventricular septal defect (13), tetralogy of Fallot (10), troncus arteriosus (4), double outlet right ventricle (2), and single left or right ventricle (4)...
March 5, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28269234/engineering-based-assessment-for-a-shape-design-of-a-pediatric-eptfe-pulmonary-conduit-valve
#14
Yusuke Tsuboko, Yasuyuki Shiraishi, Akihiro Yamada, Tomoyuki Yambe, Hidekazu Miura, Seitaro Mura, Masaaki Yamagishi
The authors examined the hemodynamic characteristics of expanded polytetrafluoroethylene (ePTFE) pulmonary valved conduits quantitatively by our originally developed pediatric pulmonary mechanical circulatory system, in order to suggest the optimal shape design. The system consisted of pneumatically driven right atrium and ventricle model, a pulmonary valve chamber, and elastic pulmonary compliance model with peripheral vascular resistance units, a venous reservoir. We employed two different types of ePTFE valve and evaluated the relationship between the leaflets motion and hemodynamic characteristics by using a high-speed video camera...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268036/effect-of-hypoxemia-on-fetal-ventricular-deformation-in-a-chronically-instrumented-sheep-model
#15
Amarnath Bhide, Juha Rasanen, Heikki Huhta, Juulia Junno, Tiina Erkinaro, Pasi Ohtonen, Mervi Haapsamo, Ganesh Acharya
We hypothesized that in near-term sheep fetuses, hypoxemia changes myocardial function as reflected in altered ventricular deformation on speckle-tracking echocardiography. Fetuses in 21 pregnant sheep were instrumented. After 4 d of recovery, fetal cardiac function was assessed by echocardiography at baseline, after 30 and 120 min of induced fetal hypoxemia and after its reversal. Left (LV) and right (RV) ventricular cardiac output and myocardial strain were measured. Baseline mean (standard deviation [SD]) LV and RV global longitudinal strains were -18...
March 4, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28268005/feasibility-of-intraoperative-water-testing-in-aortic-valve-repair-direct-visualization-from-left-ventricle-with-a-videoscope
#16
Shunsuke Miyahara, Takanori Oka, Hiroaki Takahashi, Takeshi Inoue, Masamichi Matsumori, Hiroshi Tanaka, Yutaka Okita
OBJECTIVE: We describe a simple method to assess the aortic valve using a videoscope inserted in the left ventricle (LV-VS) during valve-sparing root replacement. The aim of this study was to evaluate the feasibility of this technique by comparing it with the findings of postoperative transesophageal echocardiography (TEE). METHODS: Thirty-six patients (29 male, mean age 45.4 ± 20.1 years) undergoing aortic root reimplantation were assessed intraoperatively with LV-VS...
February 10, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28267539/assessment-of-left-ventricular-deformation-in-patients-with-ebstein-s-anomaly-by-cardiac-magnetic-resonance-tissue-tracking
#17
Xi Liu, Qin Zhang, Zhi-Gang Yang, Ke Shi, Hua-Yan Xu, Lin-Jun Xie, Li Jiang, Kai-Yue Diao, Ying-Kun Guo
PURPOSE: The aim of this study was to clarify the feasibility of myocardial strain using cardiovascular magnetic resonance (CMR) for the evaluation of left ventricular (LV) deformation in patients with Ebstein's anomaly (EA). MATERIALS AND METHODS: We recruited 32 patients with EA and 30 controls for CMR examination and measured LV function, dimension and tissue tracking parameters (the global and regional radial, circumferential and longitudinal peak strain), together with the right ventricle (RV) dimension...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28263145/early-and-midterm-results-of-the-arterial-switch-operation-a-9-year-single-center-experience
#18
Atakan Atalay, Ugur Gocen
BACKGROUND: The arterial switch operation (ASO) has become the surgical approach of choice for transposition of the great arteries. The aim of this paper was to describe the outcomes in patients who underwent arterial switch operation and to analyze the predictors of in-hospital mortality and further need for reoperation at a single-center institution. We reviewed our 9-year experience with arterial switch operation (ASO) for transposition of the great arteries (TGA) or Taussig-Bing anomaly (TBA) to assess the early and midterm outcomes...
February 28, 2017: Heart Surgery Forum
https://www.readbyqxmd.com/read/28259654/lox-1-promotes-right-ventricular-hypertrophy-in-hypoxia-exposed-rats
#19
Tian-Tian Zhu, Wei-Fang Zhang, Ping Luo, Zhao-Xin Qian, Feng Li, Zheng Zhang, Chang-Ping Hu
AIM: Chronic hypoxia leads to right ventricular hypertrophy (RVH). RVH is believed to result from hypoxia-induced pulmonary hypertension. However, if hypoxia impacts RVH directly awaits clarification. Hypoxia triggers oxidative stress, and lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) mediates reactive oxygen species (ROS) generation in different cells. Therefore, this study aims to explore whether LOX-1-mediated oxidative stress accounts for hypoxia-induced RVH. MAIN METHODS: Rats developed RVH after 3weeks of hypoxia (10% O2)...
March 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28256215/mechanism-and-prognostic-role-of-qr-in-v1-in-patients-with-pulmonary-arterial-hypertension
#20
Marcin Waligóra, Grzegorz Kopeć, Kamil Jonas, Anna Tyrka, Agnieszka Sarnecka, Tomasz Miszalski-Jamka, Małgorzata Urbańczyk-Zawadzka, Piotr Podolec
BACKGROUND: The presence of qR pattern in lead V1 of the 12-lead surface ECG has been proposed as a risk marker of death in patients with pulmonary arterial hypertension (PAH). We aimed to validate these findings in the modern era of PAH treatment and additionally to assess the relation of qR in V1 to PAH severity. We also investigated the possible mechanisms underlying this ECG sign. METHODS: Consecutive patients with PAH excluding patients with congenital heart defect were recruited between February 2008 and January 2016...
February 20, 2017: Journal of Electrocardiology
keyword
keyword
71564
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"