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https://www.readbyqxmd.com/read/28813774/pulmonary-embolism-caused-by-popliteal-vein-aneurysm-a-case-report
#1
Kevin Marquez, Kalyan Chakravarthy Potu, Chad Laurich, Randall Lamfers
In this case report, we describe an unusual episode of bilateral submassive pulmonary embolism (PE) caused by a popliteal vein aneurysm (PVA). The development of PE stems from many risk factors including obesity (BMI³ 30 kg/m2), hypertension, cigarette smoking (greater than 25 cigarettes per day), increasing age, surgery, immobility, malignancy, and inherited thrombophilia. A PVA is a rare but significant cause of PE. A 28-year-old male presented to the emergency department with progressive shortness of breath...
March 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/28801766/absence-of-cardiotoxicity-with-prolonged-treatment-and-large-accumulating-doses-of-pegylated-liposomal-doxorubicin
#2
N Blank, I Laskov, R Kessous, L Kogan, S Lau, I A Sebag, Walter H Gotlieb, L Rudski
BACKGROUND: Pegylated liposomal doxorubicin (PLD) is used as a second-line therapy for gynecologic cancers, with a better short-term toxicity profile compared to doxorubicin or other anthracyclines. METHODS: We screened 14 patients with recurrent gynecologic cancers, who underwent prolonged treatment with large cumulative doses of PLD for overt or subtle signs of cardiotoxicity (CTX) using standard and advanced echocardiography techniques [3D volumetric method for left ventricular ejection fraction (LVEF) and left ventricular/right ventricular global longitudinal strain]...
August 11, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28774377/association-of-estimated-sodium%C3%A2-intake%C3%A2-with-adverse-cardiac-structure-and%C3%A2-function-from-the-hypergen-study
#3
Senthil Selvaraj, Luc Djoussé, Frank G Aguilar, Eva E Martinez, Vincenzo B Polsinelli, Marguerite R Irvin, Donna K Arnett, Sanjiv J Shah
BACKGROUND: The optimal level of sodium intake remains controversial. OBJECTIVES: This study sought to determine whether examination of left ventricular longitudinal strain (LS), circumferential strain, and e' velocity can provide insight into thresholds for the detrimental effects of estimated sodium intake (ESI) on subclinical cardiovascular disease. METHODS: We performed speckle-tracking analysis on HyperGEN (Hypertension Genetic Epidemiology Network) study echocardiograms with available urinary sodium data (N = 2,996)...
August 8, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28752782/the-feasibility-of-substituting-left-atrial-wall-strain-for-flow-velocity-of-left-atrial-appendage
#4
Akihito Miyoshi, Yoichi Nakamura, Yukio Kazatani, Hiroshi Ito
OBJECTIVE: Non-valvular atrial fibrillation (NVAF) is frequently complicated by thromboembolism. Left atrial appendage (LAA) flow is a predictor of LAA thrombosis. LAA flow is measured by transesophageal echocardiography (TEE), which is a semi-invasive diagnostic tool. Recently, speckle-tracking methods have been adapted for the evaluation of local cardiac function. We hypothesised that if we could determine LAA wall motion utilising a speckle tracking technique, we could non-invasively analyse LAA flow...
July 28, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28752570/a-preliminary-comparison-of-two-dimensional-speckle-tracking-echocardiography-and-pressure-volume-loop-analysis-in-patients-with-fontan-physiology-the-role-of-ventricular-morphology
#5
David Steflik, Ryan J Butts, George H Baker, Varsha Bandisode, Andrew Savage, Andrew M Atz, Shahryar M Chowdhury
OBJECTIVE: Speckle tracking echocardiography (STE) may be a useful modality for assessing ventricular performance in patients with single ventricle physiology. However, STE's ability to accurately assess ventricular performance in this population is unknown. The objective of this study was to perform a preliminary comparison of STE measures of myocardial deformation to reference standard measures of function derived from pressure-volume loop (PVL) analysis. DESIGN: This was a secondary analysis of a prospective study investigating PVLs in patients with Fontan physiology...
July 28, 2017: Echocardiography
https://www.readbyqxmd.com/read/28734017/evaluation-of-the-impact-of-strain-correction-on-the-orientation-of-cardiac-diffusion-tensors-with-in-vivo-and-ex-vivo-porcine-hearts
#6
Pedro F Ferreira, Sonia Nielles-Vallespin, Andrew D Scott, Ranil de Silva, Philip J Kilner, Daniel B Ennis, Daniel A Auger, Jonathan D Suever, Xiaodong Zhong, Bruce S Spottiswoode, Dudley J Pennell, Andrew E Arai, David N Firmin
PURPOSE: To evaluate the importance of strain-correcting stimulated echo acquisition mode echo-planar imaging cardiac diffusion tensor imaging. METHODS: Healthy pigs (n = 11) were successfully scanned with a 3D cine displacement-encoded imaging with stimulated echoes and a monopolar-stimulated echo-planar imaging diffusion tensor imaging sequence at 3 T during diastasis, peak systole, and strain sweet spots in a midventricular short-axis slice. The same diffusion tensor imaging sequence was repeated ex vivo after arresting the hearts in either a relaxed (KCl-induced) or contracted (BaCl2 -induced) state...
July 21, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28722247/left-ventricular-function-and-regional-strain-with-subtly-tagged-steady-state-free-precession-feature-tracking
#7
Eric M Schrauben, Brett R Cowan, Andreas Greiser, Alistair A Young
PURPOSE: To provide regional strain and ventricular volume from a single acquisition, using subtly tagged steady-state free precession (SubTag SSFP) feature tracking. MATERIALS AND METHODS: The effects on regional strain of tag strength in gradient recalled echo (GRE) tagging, flip angle in untagged balanced SSFP, and both in SubTag SSFP were examined in the mid left ventricle of 15 healthy volunteers at 3T. Optimal parameters were determined from varying both tag strength and SSFP flip angle using full tag saturation GRE as the reference standard...
July 19, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28716430/non-invasive-evaluation-of-right-ventricular-function-with-real-time-3-d-echocardiography
#8
Ran Chen, Meihua Zhu, Kacie Amacher, Xia Wu, David J Sahn, Muhammad Ashraf
The aim of this study was to evaluate the accuracy and feasibility of real-time 3-D echocardiography (3-DE) in assessing right ventricular (RV) systolic function. A latex balloon was inserted into the right ventricle of 20 freshly harvested pig hearts which were then passively driven by a pulsatile pump apparatus. The RV global longitudinal strain (GLS), global circumferential strain (GCS), global area strain (GAS) and RV ejection fraction (RVEF), derived from 3-DE, as well as the RVEF obtained from 2-D echocardiography (2-DE) were quantified at different stroke volumes (30-70 mL) and compared with sonomicrometry data...
July 14, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28714947/long-term-systolic-function-in-children-and-young-adults-after-hematopoietic-stem-cell-transplant
#9
S J Rotz, C E Dandoy, M D Taylor, S Jodele, J L Jefferies, A Lane, J A El-Bietar, A W Powell, S M Davies, T D Ryan
Congestive heart failure and subclinical left ventricular systolic dysfunction (LVSD) affect long-term survivors of hematopoietic stem cell transplant (HSCT). Echocardiographic measurements of global longitudinal and circumferential strain have shown promise in identifying subclinical LVSD in cancer survivors. We analyzed echocardiograms in 95 children and young adults with malignancies or bone marrow failure syndromes performed before HSCT and 1-6 years after HSCT. We additionally measured the biomarkers soluble suppression of tumorigenicity-2 (sST-2) and cardiac troponin-I (cTn-I) in the same children through 49 days post HSCT...
July 17, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28698601/characteristics-of-sonography-in-a-rat-achilles-tendinopathy-model-possible-non-invasive-predictors-of-biomechanics
#10
Su-Ya Lee, Hsiao-Feng Chieh, Chien-Ju Lin, I-Ming Jou, Yung-Nien Sun, Li-Chieh Kuo, Po-Ting Wu, Fong-Chin Su
The purpose of this study was to investigate the dynamic changes of histopathology, biomechanical properties, echo intensity, and ultrasound features in a collagenase-induced tendinopathy model of rat Achilles tendons, and to examine the associations among biomechanical properties, echo intensity, and ultrasound features. Forty-two rats received an ultrasound-guided collagenase injection on their left Achilles tendons, and needle puncture on the right ones as the control. At four, eight, and twelve weeks post-injury, the tendons were examined via measurements of their biomechanical properties, histopathological and ultrasonographic characteristics...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28698259/reversibility-of-cardiac-function-predicts-outcome-after-transcatheter-aortic-valve-replacement-in-patients-with-severe-aortic-stenosis
#11
Kimi Sato, Arnav Kumar, Brandon M Jones, Stephanie L Mick, Amar Krishnaswamy, Richard A Grimm, Milind Y Desai, Brian P Griffin, L Leonardo Rodriguez, Samir R Kapadia, Nancy A Obuchowski, Zoran B Popović
BACKGROUND: Reversibility of left ventricular (LV) dysfunction in high-risk aortic stenosis patient and its impact on survival after transcatheter aortic valve replacement (TAVR) are unclear. We aimed to evaluate longitudinal changes of LV structure and function after TAVR and their impact on survival. METHODS AND RESULTS: We studied 209 patients with aortic stenosis who underwent TAVR from May 2006 to December 2012. Echocardiograms were used to calculate LV end-diastolic volume index (LVEDVi), LV ejection fraction, LV mass index (LVMi), and global longitudinal strain before, immediately (<10 days), late (1-3 months), and yearly after TAVR...
July 11, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28697037/the-association-of-surgical-versus-natural-menopause-with-future-left-ventricular-structure-and-function-the-coronary-artery-risk-development-in-young-adults-cardia-study
#12
Duke Appiah, Pamela J Schreiner, Chike C Nwabuo, Melissa F Wellons, Cora E Lewis, Joao A Lima
OBJECTIVE: To evaluate the association between surgical menopause (SM) versus natural menopause (NM) in relation to later left ventricular (LV) structure and function, while taking into account the LV parameters and other cardiovascular disease risk factor (CVDRF) levels that predate the menopausal transition. METHODS: We studied 825 premenopausal women from the Coronary Artery Risk Development in Young Adults study in 1990 to 1991 (baseline, mean age 32 years) who later reached menopause by 2010 to 2011 and had echocardiograms at these two time points...
July 10, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28687124/role-of-global-longitudinal-strain-in-predicting-outcomes-in-hypertrophic-cardiomyopathy
#13
Hongyun Liu, Iraklis Pozios, Bereketeab Haileselassie, Alexandra Nowbar, Lars L Sorensen, Susan Phillip, Dai-Yin Lu, Ioannis Ventoulis, Hongchang Luo, M Roselle Abraham, Theodore P Abraham
Global longitudinal strain (GLS) is a sensitive indicator of global left ventricular function particularly in those with normal ejection fraction. We examined the potential value of GLS in predicting outcomes in hypertrophic cardiomyopathy (HC). Conventional and strain echocardiography was performed in 400 patients with HC followed for a median 3.1 years (interquartile range 1.2 to 5.6). Peak systolic strain from 3 apical views was averaged to calculate GLS. Patients were divided based on a previously published cutoff value of -16%...
May 30, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28678927/global-longitudinal-strain-or-left-ventricular-twist-and-torsion-which-correlates-best-with-ejection-fraction
#14
Marcio Silva Miguel Lima, Hector R Villarraga, Maria Cristina Donadio Abduch, Marta Fernandes Lima, Cecilia Beatriz Bittencourt Viana Cruz, João Cesar Nunes Sbano, Mariana Callil Voos, Wilson Mathias, Jeane Mike Tsutsui
Background: Estimative of left ventricular ejection fraction (LVEF) is a major indication for echocardiography. Speckle tracking echocardiography (STE) allows analysis of LV contraction mechanics which includes global longitudinal strain (GLS) and twist/torsion, both the most widely used. Direct comparison of correlations between these novel parameters and LVEF has never been done before. Objective: This study aims to check which one has the highest correlation with LVEF...
July 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28669395/afterload-dependence-of-right-ventricular-myocardial-strain
#15
Leah Wright, Kazuaki Negishi, Nathan Dwyer, Sudhir Wahi, Thomas H Marwick
BACKGROUND: Right ventricular (RV) free wall strain (RVFWS) is a feasible method for quantitation and follow-up of RV function and may have benefits over traditional markers such as fractional area change. However, like all ejection phase parameters, RVFWS is difficult to assess in the presence of changing afterload. The aim of this study was to compare RVFWS and traditional RV function parameters for tracking progress of RV function in patients with pulmonary arterial hypertension (PAH) over a range of pulmonary artery systolic pressure (PASPs)...
July 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28664480/usefulness-of-left-ventricular-speckle-tracking-echocardiography-and-novel-measures-of-left-atrial-structure-and-function-in-diagnosing-paroxysmal-atrial-fibrillation-in-ischemic-stroke-and-transient-ischemic-attack-patients
#16
Kristoffer Grundtvig Skaarup, Hanne Christensen, Nis Høst, Masti Mahdy Mahmoud, Christian Ovesen, Flemming Javier Olsen, Jan Skov Jensen, Tor Biering-Sørensen
Asymptomatic paroxysmal atrial fibrillation (PAF) is often assumed to be the cause of cryptogenic ischemic strokes (IS) and transient ischemic attacks (TIA). We examined the usefulness of measures obtained by 2D speckle tracking echocardiography and novel left atrial measurements, in the diagnosis of PAF in patients with IS and TIA. We retrospectively included 205 patients who after acute IS or TIA underwent an echocardiogram in sinus rhythm. Patients were designated as PAF-patients if they had one or more reported incidents of AF before or after their echocardiographic examination...
June 29, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28660071/comparison-of-two-dimensional-strain-analysis-using-vendor-independent-and-vendor-specific-software-in-adult-and-pediatric-patients
#17
Shafkat Anwar, Kazuaki Negishi, Allen Borowszki, Patrick Gladding, Zoran B Popović, Francine Erenberg, James D Thomas
INTRODUCTION: Two-dimensional strain analysis is a powerful analysis modality, however, clinical utilization has been limited by variability between different analysis systems and operators. We compared strain in adults and children using vendor-specific and vendor-independent software to evaluate variability. METHODS: One hundred and ten subjects (50/110 pediatric, 80/110 normal left ventricular function) had echocardiograms with a General Electric ultrasound scanner between September 2010 and January 2012...
January 2017: JRSM Cardiovascular Disease
https://www.readbyqxmd.com/read/28659144/impaired-right-ventricular-contractile-function-in-childhood-obesity-and-its-association-with-right-and-left-ventricular-changes-a-cine-dense-cardiac-magnetic-resonance-study
#18
Linyuan Jing, Arichanah Pulenthiran, Christopher D Nevius, Abba Mejia-Spiegeler, Jonathan D Suever, Gregory J Wehner, H Lester Kirchner, Christopher M Haggerty, Brandon K Fornwalt
BACKGROUND: Pediatric obesity is a growing public health problem, which is associated with increased risk of cardiovascular disease and premature death. Left ventricular (LV) remodeling (increased myocardial mass and thickness) and contractile dysfunction (impaired longitudinal strain) have been documented in obese children, but little attention has been paid to the right ventricle (RV). We hypothesized that obese/overweight children would have evidence of RV remodeling and contractile dysfunction...
June 28, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28655468/revisiting-the-cram%C3%A3-r-rao-lower-bound-for-elastography-predicting-the-performance-of-axial-lateral-and-polar-strain-elastograms
#19
Prashant Verma, Marvin M Doyley
We derived the Cramér Rao lower bound for 2-D estimators employed in quasi-static elastography. To illustrate the theory, we modeled the 2-D point spread function as a sinc-modulated sine pulse in the axial direction and as a sinc function in the lateral direction. We compared theoretical predictions of the variance incurred in displacements and strains when quasi-static elastography was performed under varying conditions (different scanning methods, different configuration of conventional linear array imaging and different-size kernels) with those measured from simulated or experimentally acquired data...
June 24, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28648418/longitudinal-ventricular-systolic-dysfunction-in-patients-with-very-severe-obstructive-sleep-apnea-a-case-control-study-using-speckle-tracking-imaging
#20
Mithun Jacob Varghese, Gautam Sharma, Garima Shukla, Sandeep Seth, Sundeep Mishra, Anupama Gupta, Vinay Kumar Bahl
OBJECTIVE: Obstructive sleep apnea (OSA) is a prevalent condition that is increasingly recognized to be associated with cardiovascular disease. We aimed to investigate the subclinical systolic ventricular dysfunction of patients with OSA using novel speckle tracking echocardiographic (STE) techniques. METHODS: This study included 31 patients of polysomnography proven very severe OSA [Apnea Hypopnea Index(AHI) >40] and an equal number of matched population with no OSA as controls...
May 2017: Indian Heart Journal
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