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https://www.readbyqxmd.com/read/28921674/decline-in-effort-capacity-with-age-echocardiographic-stress-analysis-in-the-elderly
#1
Anat Milman, Gad Keren, Yan Topilsky
BACKGROUND: The present study was designed to assess the underlying mechanism of decline in effort capacity seen with aging. METHODS: We analyzed 250 healthy senior patients (≥65 years) with an ejection fraction ≥60% who underwent a stress echocardiogram test. The seniors (aged 65-94) were divided into 3 equal age groups (groups 1, 2, and 3), and their echo characteristics at rest and peak exercise (measured and calculated) were compared. RESULTS: Diastolic function at rest declined significantly (E lateral, E septal, E/E', A) with age, while other rest parameters were similar...
September 17, 2017: Echocardiography
https://www.readbyqxmd.com/read/28917680/effusive-constrictive-pericarditis-after-pericardiocentesis-incidence-associated-findings-and-natural-history
#2
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/28895301/early-leaflet-thrombosis-complicating-transcatheter-implantation-of-a-sapien-3-valve-in-a-native-right-ventricular-outflow-tract
#3
Mounir Riahi, Philipp Blanke, John Webb, Ronald G Carere
A 59-year-old female with Tetralogy of Fallot had a previous complete repair with RVOT patch enlargement. She developed subsequent severe symptomatic (NYHA III) pulmonary regurgitation with severe RV dilatation. She had a concomitant interstitial lung disease secondary to hypersensitivity pneumonitis that precluded her from cardiac surgery. After preprocedural assessment using computed tomography, echocardiography and invasive angiography we decided to implant a 29 mm Edwards Sapien 3 valve without pre-stenting...
September 12, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28894056/-emergency-mitral-valvoplasty-for-papillary-muscle-rupture
#4
Keishi Ueyama, Motohiro Koyama, Kenji Otaki, Kae Ito
We experienced 2 emergency surgical cases of severe mitral valve regurgitation due to papillary muscle rupture. Case 1:a 69-year-old man presented with respiratory and cardiac failure due to mitral regurgitation. He had no history of myocardial infarction. Mitral valve repair with artificial cords was performed. The papillary muscle of the anterior leaflet was ruptured. The postoperative course was uneventful. Case 2:a 80-year-old man came to our hospital with cardiac arrest. Emergency coronary intervention was performed to the right coronary and intraaortic balloon pumping was inserted...
September 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28886196/fully-coupled-fluid-structure-interaction-simulation-of-the-aortic-and-mitral-valves-in-a-realistic-3d-left-ventricle-model
#5
Wenbin Mao, Andrés Caballero, Raymond McKay, Charles Primiano, Wei Sun
In this study, we present a fully-coupled fluid-structure interaction (FSI) framework that combines smoothed particle hydrodynamics (SPH) and nonlinear finite element (FE) method to investigate the coupled aortic and mitral valves structural response and the bulk intraventricular hemodynamics in a realistic left ventricle (LV) model during the entire cardiac cycle. The FSI model incorporates valve structures that consider native asymmetric leaflet geometries, anisotropic hyperelastic material models and human material properties...
2017: PloS One
https://www.readbyqxmd.com/read/28875298/2d-longitudinal-lv-speckle-tracking-strain-pattern-in-breast-cancer-survivors-sports-activity-vs-exercise-as-prescription-model
#6
Giorgio Galanti, Gianni Pedrizzetti, Stefano Pedri, Laura Stefani
Prevention strategies are important to optimize and to manage heart care in breast cancer survivors. Regular physical activity at moderate intensity is normally proposed to maintain myocardial performance; however, no data is available about the different impact of different levels of physical exercise. 2D speckle tracking echocardiography (2DSTE) is an accepted method for early detection of myocardial dysfunction. The study aims to monitor the cardiac performances in breast cancer survivors by 2DSTE analysis to manage sports activity vs physical activity...
September 5, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28870515/mri-characteristics-of-the-glia-limitans-externa-a-7t-study
#7
Kiyotaka Suzuki, Kenichi Yamada, Kazunori Nakada, Yuji Suzuki, Masaki Watanabe, Ingrid L Kwee, Tsutomu Nakada
PURPOSE: To perform a systematic analysis of the intrinsic contrast parameters of the FLAIR hyperintense rim (FHR), a thin layer of high intensity covering the entire surface of the cerebral cortex detected on fluid-attenuated inversion recovery (FLAIR) sequence T2 weighted imaging performed on a 7T system, in an attempt to identify its anatomical correlate. METHODS: Fast spin echo inversion recovery (FSE-IR) and cardiac-gated fast spin echo (FSE) images were obtained with defined parameters in eight normal volunteers on a 7 T MRI system to determine T2 and proton density, T1 characteristics...
September 9, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28868251/maternal-and-fetal-tuberous-sclerosis-do-we-know-enough-as-an-obstetrician
#8
Nalini Sharma, Shriram Sharma, Jion Lalnunnem Thiek, Santa Singh Ahanthem, Arnab Kalita, Donboklang Lynser
BACKGROUND: Tuberous sclerosis, also known as tuberous sclerosis complex (TSC), is a rare genetic condition that mainly causes hamartomas to develop in different parts of the body. TSC, an autosomal dominant trait with variable penetrance, can adversely affect maternal and fetal outcome. CASE PRESENTATION: In this paper, a case of maternal and fetal tuberous sclerosis having fetal cardiac rhabdomyoma detected in utero at 26 weeks was reported who subsequently had fetal demise at 31 weeks...
April 2017: Journal of Reproduction & Infertility
https://www.readbyqxmd.com/read/28867155/the-boundaries-of-fetal-cardiac-intervention-expand-or-tighten
#9
REVIEW
Laura Gellis, Wayne Tworetzky
Fetal cardiac intervention (FCI) is a relatively new and continually evolving field, and, for select cardiac defects, offers the potential to alter the progression of the disease and improve outcomes. It is a procedure that requires a collaborative effort between maternal-fetal medicine, interventional cardiology and fetal echo/ultrasound specialists, as well as fetal and maternal anesthesiologists, nursing specialists, and social workers. This article reviews the most recently reported data and advances in FCI...
August 31, 2017: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28864465/automated-left-heart-chambers-volumetric-assessment-using-three-dimensional-echocardiography-in-chinese-adolescents
#10
Xiu-Xia Luo, Fang Fang, Hung-Kwan So, Chao Liu, Man-Ching Yam, Alex Pui-Wai Lee
BACKGROUND: Several studies have reported the accuracy and reproducibility of HeartModel for automated determination of three-dimensional echocardiography (3DE)-derived left heart volumes and left ventricular (LV) ejection fraction (LVEF) in adult patients. However, it remains unclear whether this automated adaptive analytics algorithm, derived from a 'training' population, can encompass adequate echo images in Chinese adolescents. OBJECTIVES: The aim of our study was to explore the accuracy of HeartModel in adolescents compared with expert manual three-dimensional (3D) echocardiography...
September 1, 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28864026/cardiac-cycle-induced-epi-time-series-fluctuations-in-the-brain-their-temporal-shifts-inflow-effects-and-t2-%C3%A2-fluctuations
#11
Olivia Viessmann, Harald E Möller, Peter Jezzard
The cardiac-induced arterial pressure wave causes changes in cerebral blood flow velocities and volumes that affect the signals in echo-planar imaging (EPI). Using single-echo EPI time series data, acquired fast enough to unalias the cardiac frequency, we found that the cardiac cycle-induced signal fluctuations are delayed differentially in different brain regions. When referenced to the time series in larger arterial structures, the cortical voxels are only minimally shifted but significant shifts are observed in subcortical areas...
August 31, 2017: NeuroImage
https://www.readbyqxmd.com/read/28856778/temporally-resolved-parametric-assessment-of-z-magnetization-recovery-topaz-dynamic-myocardial-t1-mapping-using-a-cine-steady-state-look-locker-approach
#12
Sebastian Weingärtner, Chetan Shenoy, Benedikt Rieger, Lothar R Schad, Jeanette Schulz-Menger, Mehmet Akçakaya
PURPOSE: To develop and evaluate a cardiac phase-resolved myocardial T1 mapping sequence. METHODS: The proposed method for temporally resolved parametric assessment of Z-magnetization recovery (TOPAZ) is based on contiguous fast low-angle shot imaging readout after magnetization inversion from the pulsed steady state. Thereby, segmented k-space data are acquired over multiple heartbeats, before reaching steady state. This results in sampling of the inversion-recovery curve for each heart phase at multiple points separated by an R-R interval...
August 30, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28856715/feasibility-of-quantitative-regional-ventilation-and-perfusion-mapping-with-phase-resolved-functional-lung-preful-mri-in-healthy-volunteers-and-copd-cteph-and-cf-patients
#13
Andreas Voskrebenzev, Marcel Gutberlet, Filip Klimeš, Till F Kaireit, Christian Schönfeld, Alexander Rotärmel, Frank Wacker, Jens Vogel-Claussen
PURPOSE: In this feasibility study, a phase-resolved functional lung imaging postprocessing method for extraction of dynamic perfusion and ventilation parameters using a conventional 1H lung MRI Fourier decomposition acquisition is introduced. METHODS: Time series of coronal gradient-echo MR images with a temporal resolution of 288 to 324 ms of two healthy volunteers, one patient with chronic thromboembolic hypertension, one patient with cystic fibrosis, and one patient with chronic obstructive pulmonary disease were acquired at 1...
August 30, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28839099/an-unusual-cause-of-tachyarrhythmia-in-an-otherwise-healthy-young-man
#14
Wessam A Raouf, Khaled Shams, Amr Mansour
A 32-year-old man referred to the cardiology clinic for palpitations was found to have paroxysmal supraventricular tachycardia (SVT) on 24-hour Holter monitoring. His general and cardiac examinations were unremarkable. A transthoracic echocardiographic study to exclude structural heart disease was performed and showed an abnormal structure in relation to the right ventricular (RV) free wall; however, poor echocardiographic windows precluded proper characterisation. Cardiac MR (CMR) was therefore performed...
September 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28833519/echocardiography-quantified-myocardial-strain-a-marker-of-global-and-regional-infarct-size-that-stratifies-likelihood-of-left-ventricular-thrombus
#15
Jiwon Kim, Sara Rodriguez-Diego, Aparna Srinivasan, Rachel-Maria Brown, Meridith P Pollie, Antonino Di Franco, Samantha R Goldburg, Jonathan Y Siden, Mark B Ratcliffe, Robert A Levine, Richard B Devereux, Jonathan W Weinsaft
BACKGROUND: Myocardial strain provides a novel means of quantifying subtle alterations in contractile function; incremental utility post-MI is unknown. OBJECTIVES: To test longitudinal-quantified by postprocessing routine echo-for assessment of MI size measured by cardiac magnetic resonance (CMR) and conventional methods, and assess regional and global strain (GLS) as markers of LV thrombus. METHODS: The population comprised of patients with anterior ST-segment MI who underwent echo and CMR prospectively...
August 22, 2017: Echocardiography
https://www.readbyqxmd.com/read/28833458/a-novel-echocardiographic-hemodynamic-classification-of-heart-failure-based-on-stroke-volume-index-and-left-atrial-pressure
#16
Amr E Abbas, Rami Khoury Abdulla, Anshul Aggrawal, Jason Crile, Steven J Lester, Judy Boura
BACKGROUND AND AIM: Dividing patients with heart failure (HF) based solely on ejection fraction (EF) may over simplify the hemodynamic states of these patients. We describe a novel echo-derived hemodynamic HF model based on flow (stroke volume index [SVI]) and left atrial pressure (E:E') correlates. METHODS: A retrospective analysis of patients admitted with HF with both reduced (HFrEF) and preserved EF (HFpEF). Patients were subdivided into four hemodynamic groups based on echocardiographic SVI (< or ≥35 mL/m(2) ) and E/E' (≥ or <15)...
August 19, 2017: Echocardiography
https://www.readbyqxmd.com/read/28833410/direct-comparison-of-in-vivo-versus-postmortem-second-order-motion-compensated-cardiac-diffusion-tensor-imaging
#17
Christian T Stoeck, Constantin von Deuster, Thea Fleischmann, Miriam Lipiski, Nikola Cesarovic, Sebastian Kozerke
PURPOSE: To directly compare in vivo versus postmortem second-order motion-compensated spin-echo diffusion tensor imaging of the porcine heart. METHODS: Second-order motion-compensated spin-echo cardiac diffusion tensor imaging was performed during systolic contraction in vivo and repeated upon cardiac arrest by bariumchloride without repositioning of the study animal or replaning of imaging slices. In vivo and postmortem reproducibility was assessed by repeat measurements...
August 22, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28828100/intense-18f-fdg-uptake-in-an-organizing-right-atrial-thrombus-mimicking-malignancy
#18
Krishna G Chaudhuri, Jonathan W Revels, Kaustubh S Yadwadkar, Lester S Johnson
We present a case of an intensely hypermetabolic intracavitary cardiac mass, standardized uptake values max 44.4, that was pathologically proved to be organizing and organized thrombus, negative for tumor. Our patient had previous right atrial mass resection 2 years prior that was pathologically described as either thrombus or infarcted atrial myxoma. She had since been on lifelong controlled anticoagulation; and on routine follow-up imaging, she had recurrent slow growth of a new right atrial mass. During a later hospital admission for chest pain, the mass was evaluated on both transthoracic and transesophageal echo cardiogram, which could not differentiate thrombus vs neoplasm...
September 2017: Radiology case reports
https://www.readbyqxmd.com/read/28828046/modern-use-of-echocardiography-in-transcatheter-aortic-valve-replacement-an-up-date
#19
Cristina Caldararu, Serban Balanescu
Echocardiography is the cornerstone in the diagnosis of any valvular heart disease. The accurate diagnosis of aortic stenosis, the left ventricle function and the other heart valves evaluation are currently done by ultrasound alone. Prosthetic valve choice and dimensions prior to implantation can be done solely by proper use of echocardiography. The emergence of new methods to cure aortic stenosis such as trans-catheter aortic valve replacement (TAVR) emphasized the diagnostic value of cardiac ultrasound. The usefulness of echocardiography in TAVR can be divided in the baseline assessment (common to patients treated by conventional surgery), intra-procedural guidance of valve deployment and post-procedural follow-up...
December 2016: Mædica
https://www.readbyqxmd.com/read/28827099/4d-cardiac-imaging-at-clinical-3-0t-provides-accurate-assessment-of-murine-myocardial-function-and-viability
#20
Lindsey A Crowe, Fabrizio Montecucco, Federico Carbone, Iris Friedli, Anne-Lise Hachulla, Vincent Braunersreuther, François Mach, Jean-Paul Vallée
OBJECTIVES: We validate a 4D strategy tailored for 3T clinical systems to simultaneously quantify function and infarct size in wild type mice after ischemia/reperfusion, with improved spatial and temporal resolution by comparison to previous published protocols using clinical field MRI systems. METHODS: C57BL/6J mice underwent 60min ischemia/reperfusion (n=14) or were controls without surgery (n=6). Twenty-four hours after surgery mice were imaged with gadolinium injection and sacrificed for post-mortem MRI and histology with serum also taken for Troponin I levels...
August 5, 2017: Magnetic Resonance Imaging
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