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echocardiographic doppler

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https://www.readbyqxmd.com/read/28937038/factors-related-to-ventricular-size-and-valvular-regurgitation-in-healthy-tibetans-in-lhasa
#1
Ying Yang, Yun-Dai Chen, Bin Feng, Zha-Xi-Duo Ji, Wei Mao, Guang Zhi
BACKGROUND: Lhasa is the main residence of Tibetans and one of the highest cities in the world. Its unique geography and ethnic population provide the chance to investigate the interactions among high altitude, ethnicity, and cardiac adaptation. Meanwhile, echocardiographic data about healthy Tibetans on a large scale are not available. This study aimed to analyze physiological factors related to ventricular size and valvular function in healthy Tibetans in Lhasa. METHODS: A representative sample of residents in Tibet was recruited using a multistage cluster random sampling method...
October 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28932490/prolonged-qrs-duration-on-surface-electrocardiogram-is-associated-with-left-ventricular-restrictive-filling-pattern
#2
Turan Erdoğan, Murtaza Emre Durakoğlugil, Yüksel Çiçek, Mustafa Çetin, Hakan Duman, Ömer Şatiroğlu, Şükrü Çelik
BACKGROUND: Prolonged QRS duration is associated with decreased left ventricular (LV) systolic function. However, the relation between LV restrictive filling pattern (RFP) and QRS duration has not been investigated yet. The purpose of our study was to assess this relationship. METHODS: We analyzed standard 12-lead surface electrocardiogram (ECG) of 155 consecutive patients. Mitral inflow and septal tissue velocities were obtained using the apical 4-chamber view with pulsed Doppler echocardiography...
March 2017: Interventional Medicine & Applied Science
https://www.readbyqxmd.com/read/28929695/-effects-of-mongolia-astragali-radix-in-protecting-early-cardiac-and-nephritic-functions-of-patients-of-hypertension-with-metabolic-syndrome
#3
Ning-Yin Li, Xiu-Li Li, Xiao-Ping Zhai, Qiong-Ying Wang, Xiao-Wei Zhang, Feng Zhao, Xiao-Feng Wang, Jian-Yun Fan, Feng Bai, Jing Yu
To explore the effect of Mongolia Astragali Radix produced in Longxi of Gansu province in protecting cardiac and nephritic functions of patients of essential hypertension(EH) with metabolic syndrome(MetS). A total of two hundred and twenty-six EH patients with MetS aged above 18 were selected. Patients were randomly divided to control group(adopted conventional medical treatment), Astragali Radix group 1(added Astragali Radix capsules 10 g•d⁻¹ besides conventional medical treatment) and Astragali Radix group 2(added Astragali Radix capsules 5 g•d⁻¹ besides conventional medical treatment)...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28928716/cushing-s-disease-subclinical-left-ventricular-systolic-and-diastolic-dysfunction-revealed-by-speckle-tracking-echocardiography-and-tissue-doppler-imaging
#4
Beata Uzie Bło-Życzkowska, Paweł Krzesinński, Przemysław Witek, Grzegorz Zielinński, Agnieszka Jurek, Grzegorz Gielerak, Andrzej Skrobowski
OBJECTIVE: Novel echocardiographic techniques, such as speckle tracking echocardiography (STE) and tissue Doppler imaging, are sensitive tools for assessing left ventricular (LV) performance. LV global longitudinal strain (GLS), assessed by STE, is a sensitive marker of myocardial systolic function. Cardiovascular complications in patients with Cushing's disease (CD) determine a higher mortality than that in an age- and gender-matched population. Cardiac systolic dysfunction may be detected in early stages by STE...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28928607/speckle-tracking-evaluation-of-right-ventricular-functions-in-children-with-sickle-cell-disease
#5
Osama Abd Rab Elrasol Tolba, Mohamed Ramadan El-Shanshory, Mohamed Abd Elaziz El-Gamasy, Walid Ahmed El-Shehaby
BACKGROUND: Cardiac dysfunction is a risk factor for death in patients with sickle cell disease (SCD). AIM OF THE WORK: Aim of the work is to evaluate the right ventricular systolic and diastolic functions by tissue Doppler and speckling tracking imaging in children with SCD. SUBJECTS AND METHODS: Thirty children with SCD and thirty controls were subjected to clinical, laboratory evaluations, and echocardiographic study using GE Vivid 7 (GE Medical System, Horten, Norway with a 3...
September 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28921420/causes-of-an-increased-pressure-gradient-through-the-left-ventricular-outflow-tract-a-west-coast-experience
#6
Sayuki Kobayashi, Yoshihiko Sakai, Isao Taguchi, Hiroto Utsunomiya, Takahiro Shiota
BACKGROUND: Left ventricular outflow tract obstruction (LVOTO) occurs from not only obstructive hypertrophic cardiomyopathy but also other conditions such as sigmoid septum or post mitral valve repair. However, the changes of the LVOT pressure gradient (LVOT PG) in LVOTO with various conditions remain unclear. METHODS: The clinical characteristics and echocardiographic parameters of 73 patients with LVOT PG ≥50 mmHg at rest on Doppler ultrasound were retrospectively investigated...
September 18, 2017: Journal of Echocardiography
https://www.readbyqxmd.com/read/28917680/effusive-constrictive-pericarditis-after-pericardiocentesis-incidence-associated-findings-and-natural-history
#7
Kye Hun Kim, William R Miranda, Larry J Sinak, Faisal F Syed, Rowlens M Melduni, Raul E Espinosa, Garvan C Kane, Jae K Oh
OBJECTIVES: This study sought to investigate the incidence, associated findings, and natural history of effusive-constrictive pericarditis (ECP) after pericardiocentesis. BACKGROUND: ECP is characterized by the coexistence of tense pericardial effusion and constriction of the heart by the visceral pericardium. Echocardiography is currently the main diagnostic tool in the assessment of pericardial disease, but limited data have been published on the incidence and prognosis of ECP diagnosed by echo-Doppler...
September 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28913410/contrast-microsphere-enhancement-of-the-tricuspid-regurgitant-spectral-doppler-signal-is-it-still-necessary-with-contemporary-scanners
#8
David G Platts, Manan Vaishnav, Darryl J Burstow, Christian Hamilton Craig, Jonathan Chan, John L Sedgwick, Gregory M Scalia
BACKGROUND: Accurate evaluation of the tricuspid regurgitant (TR) spectral Doppler signal is important during transthoracic echocardiographic (TTE) evaluation for pulmonary hypertension (PHT). Contrast enhancement improves Doppler backscatter. However, its incremental benefit with contemporary scanners is less well established. The aim of this study was to assess whether the TR spectral Doppler signal using contemporary scanners was improved using a second generation contrast agent, Definity® (CE), compared to unenhanced TTE (UE)...
December 2017: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/28904957/echocardiographic-techniques-of-deformation-imaging-in-the-evaluation-of-maternal-cardiovascular-system-in-patients-with-complicated-pregnancies
#9
REVIEW
Silvia Visentin, Chiara Palermo, Martina Camerin, Luciano Daliento, Denisa Muraru, Erich Cosmi, Luigi P Badano
Cardiovascular diseases (CVD) represent the leading cause of maternal mortality and morbidity. Knowledge of CVD in women is constantly evolving and data are emerging that female-specific risk factors as complications of pregnancy are conditions associated with an increased risk for the long-term development of CVD. Echocardiography is a safe and effective imaging technique indicated in symptomatic or asymptomatic pregnant women with congenital heart diseases who require close monitoring of cardiac function...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28900614/echocardiographic-evaluation-of-pulmonary-pressures-and-right-ventricular-function-after-pediatric-cardiac-surgery-a-simple-approach-for-the-intensivist
#10
REVIEW
Maurice Beghetti
Pulmonary hypertension (PH) is diagnosed using cardiac catheterization and is defined as an elevation of mean pulmonary artery pressure (PAP) greater than 25 mmHg. Although invasive hemodynamics remains the gold standard and is mandatory for disease confirmation, transthoracic echocardiography (TTE) is an extremely useful non-invasive and widely available tool that allows for screening and follow-up, in particular, in the acute setting. TTE may be a valuable alternative, allowing for direct measurement and/or indirect assessment of PAP...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28899862/challenges-and-opportunity-in-the-era-of-quantitative-echocardiography
#11
EDITORIAL
Cheuk-Man Yu
The advancement of echocardiography in the past two decades is more than downsizing of the machines and improvement of image quality, but introduction of new imaging modalities leading to the ability of performing quantitative analysis. This function is greatly facilitated by the integration of echo machines with high performance computers, software programming and establishment of workstation for offline analysis. Today, echo examination is more than estimation of ejection fraction (EF) and patterns of left ventricular (LV) diastolic dysfunction...
September 12, 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28895173/cardiac-changes-in-moderately-malnourished-children-and-their-correlations-with-anthropometric-and-electrolyte-changes
#12
Osama El Razaky, Ahmed Naeem, Amr Donia, Doaa El Amrousy, Noha Elfeky
OBJECTIVE: To evaluate electrocardiographic and echocardiographic changes in moderately malnourished children and to correlate them with both anthropometric and electrolyte changes. PATIENTS AND METHOD: Sixty moderately malnourished children were taken as patient group, and 60 healthy children of matched age and sex were taken as control group. Weight, height, body mass index (BMI), serum albumin, and electrolytes were measured for all children. Electrocardiographic evaluation for calculated QT (QTc) and QT dispersion (QTd) was performed...
September 12, 2017: Echocardiography
https://www.readbyqxmd.com/read/28893830/assessment-of-paravalvular-leakage-after-transcatheter-aortic-valve-implantation-add-clinical-signs-to-echocardiographic-data
#13
Corstiaan A den Uil, Mihai Strachinaru, Ben van der Hoven, J Han J Meeder
A 62-year old male with pulmonary fibrosis and aortic valve stenosis underwent TAVI (Corevalve Evolut XL 34 mm) in the build-up for lung transplantation (LuTx). Following post-dilation for a large annular perimeter, moderate paravalvular aortic regurgitation (AR) was observed. After 6 weeks, he was admitted to the ICU with respiratory failure(A). TTE demonstrated residual mild AR (based on a small excentric paravalvular AR jet, <10% circumferential extent, pressure half-time was not reliably measured) and together with borderline elevated NT-pro-BNP, the consultant cardiologist authorized LuTx listing...
September 11, 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28880385/echocardiographic-features-of-right-ventricular-diverticulum-a-case-report
#14
Lihong Wang, Xiaoli Cao, Jie Xue, Hongyan Li, Lei Shi, Yanming Men
Right ventricular diverticulum is a rare form of cardiac deformity, with a very few cases caused by pericarditis. A 60-year-old man sought medication because of chest congestion and shortness of breath. CT showed a soft tissue mass at the heart apex and pericardial calcification. Doppler echocardiography demonstrated a mixed cystic solid mass at the right ventricular apex. Surgical cure confirmed the diagnosis of right ventricular apex diverticulum with pericarditis. Echocardiography is contributive to the diagnosis of ventricular diverticula in measuring their size and showing the local thinning of the ventricular wall with localized bulging and abnormal motion...
October 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28879657/an-exploratory-investigation-of-echocardiographic-parameters-and-the-effects-of-posture-on-cardiac-structure-and-function-in-the-livingstone-s-fruit-bat-pteropus-livingstonii
#15
Aimee L Drane, Robert Shave, Andrew Routh, Alberto Barbon
There is growing evidence that dilated cardiomyopathy may be a major cause of death in captive Livingstone's fruit bats (Pteropus livingstonii). Therefore, the primary aim of this prospective, exploratory study was to examine whether a systematic cardiac ultrasound protocol is feasible in this critically endangered species and to report basic measures of cardiac structure and function from a cohort of apparently healthy bats. A secondary aim was to test the effect posture (dorsal recumbency vs. roosting) has upon cardiac function in this species...
September 6, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28870062/initial-clinical-and-hemodynamic-results-of-a-regional-pulmonary-thromboendarterectomy-program
#16
Farhan Raza, Anjali Vaidya, Anne-Sophie Lacharite-Roberge, Vladimir Lakhter, Hayan Al-Maluli, Irfan Ahsan, Pamela Boodram, Chandra Dass, Frances Rogers, Martin G Keane, Sheila Weaver, Riyaz Bashir, Yoshiya Toyoda, Paul Forfia
BACKGROUND: Pulmonary thromboendarterectomy (PTE) is the treatment of choice for eligible patients with chronic thromboembolic pulmonary hypertension (CTEPH). However, access to CTEPH and PTE care is limited. There is a paucity of published data on PTE efficacy and outcomes from alternative, regional centers of excellence in CTEPH and PTE care in the United States, outside a single national and international referral center. METHODS: We performed a retrospective review of patients undergoing PTE at our institution from June 2013 to December 2016 (42 months), and collected clinical, echocardiographic and hemodynamic data on our patients pre- and post-PTE (n=71)...
September 4, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28866972/comparison-of-continous-wave-doppler-ultrasound-monitor-and-echocardiography-to-assess-cardiac-output-in-intensive-care-patients
#17
Ahmad Elgendy, Ian M Seppelt, Andrew S Lane
BACKGROUND: Continuous-wave Doppler (CWD) ultrasound through the left ventricular outflow tract is one modality used for non-invasive cardiac output measurement. The ultrasonic cardiac output monitor (USCOM) is a relatively new monitor which uses a small, transcutaneous ultrasound probe to measure cardiac output with CWD via the suprasternal window. It is faster and less complex to train new users than conventional echocardiography. In addition to stroke volume (SV), the USCOM can calculate stroke volume variation (SVV) and the Smith-Madigan inotropy index (SMII), which is an estimate of the pre-load independent contractility of the myocardium...
September 2017: Critical Care and Resuscitation: Journal of the Australasian Academy of Critical Care Medicine
https://www.readbyqxmd.com/read/28865107/effect-of-body-position-exercise-and-sedation-on-estimation-of-pulmonary-artery-pressure-in-dogs-with-degenerative-atrioventricular-valve-disease
#18
J D Rhinehart, K E Schober, B A Scansen, V Yildiz, J D Bonagura
BACKGROUND: Severity of pulmonary hypertension (PH) in dogs is related to clinical signs and prognosis. HYPOTHESIS/OBJECTIVES: We hypothesized that Doppler echocardiographic (DE) indices of pulmonary artery pressure (PAP) and pulmonary vascular resistance (PVR) are influenced by independent factors that create clinically important variability of DE-based estimates of PH in dogs. ANIMALS: Thirty-eight client owned dogs with naturally acquired degenerative atrioventricular valve disease and tricuspid regurgitation (TR)...
September 2, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28845003/-diagnosis-of-right-ventricular-outflow-tract-and-intraoperative-lesion-in-patients-with-right-coronary-artery-sinus-rupture-by-transthoracic-echocardiography
#19
Xiongfei Liang, Yifeng Yang, Wei Lin
To investigate the role of thoracic echocardiography in diagnosis and differential diagnosis of the right ventricular outflow tract into the right aorta with right ventricular aneurysm rupture. 
 Methods: A total of 19 patients with sinus rupture caused by ventricular septal defect in the right ventricular outflow road were reviewed. These patients were diagnosed as aortic right coronary sinus by preoperative transthoracic echocardiography from February 2010 to September 2016 in Xiangya Second Hospital and Xiangya Medical College Affiliated Haikou Hospital...
July 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28840383/comprehensive-echocardiographic-assessment-of-biventricular-function-in-the-rabbit-animal-model-in-cardiovascular-research-feasibility-and-normal-values
#20
Sara Roldan Ramos, Guido Pieles, Wei Hui, Ryo Ishii, Cameron Slorach, Mark K Friedberg
Quantification of cardiac structure and function is central in cardiovascular research. Rabbits are valuable research models of cardiovascular human disease; however, there is little normal data available. The aim of this study was to investigate feasibility and provide normal values for comprehensive echocardiographic assessment of biventricular function in rabbits. New Zealand white rabbits underwent trans-thoracic echocardiography using a general electric (GE) Vivid 7/E9 system with a 10 MHz transducer, under light sedation, to evaluate biventricular function and dimensions...
August 24, 2017: International Journal of Cardiovascular Imaging
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