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Speckle tracking

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https://www.readbyqxmd.com/read/27921165/left-ventricular-twist-mechanics-during-incremental-cycling-and-knee-extension-exercise-in-healthy-men
#1
Alexander Beaumont, John Hough, Nicholas Sculthorpe, Joanna Richards
PURPOSE: The objective of the present study was to investigate left ventricular (LV) twist mechanics in response to incremental cycling and isometric knee extension exercises. METHODS: Twenty-six healthy male participants (age = 30.42 ± 6.17 years) were used to study peak twist mechanics at rest and during incremental semi-supine cycling at 30 and 60% work rate maximum (W max) and during short duration (15 s contractions) isometric knee extension at 40 and 75% maximum voluntary contraction (MVC), using two-dimensional speckle tracking echocardiography...
December 5, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27916237/transesophageal-speckle-tracking-echocardiography-improves-right-ventricular-systolic-function-assessment-in-the-perioperative-setting
#2
Nicholas W Markin, Mohammed Chamsi-Pasha, Jiangtao Luo, Walker R Thomas, Tara R Brakke, Thomas R Porter, Sasha K Shillcutt
BACKGROUND: Perioperative evaluation of right ventricular (RV) systolic function is important to follow intraoperative changes, but it is often not possible to assess with transthoracic echocardiographic (TTE) imaging, because of surgical field constraints. Echocardiographic RV quantification is most commonly performed using tricuspid annular plane systolic excursion (TAPSE), but it is not clear whether this method works with transesophageal echocardiographic (TEE) imaging. This study was performed to evaluate the relationship between TTE and TEE TAPSE distances measured with M-mode imaging and in comparison with speckle-tracking TTE and TEE measurements...
December 1, 2016: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/27916236/strain-imaging-with-a-bull-s-eye-map-for-detecting-significant-coronary-stenosis-during-dobutamine-stress-echocardiography
#3
Li-Tan Yang, Yuichiro Kado, Yasufumi Nagata, Kyoko Otani, Yutaka Otsuji, Masaaki Takeuchi
BACKGROUND: Accurate visual assessment of wall motion during dobutamine stress echocardiography (DSE) requires expertise; strain stress echocardiography thus has potential for the objective and reliable evaluation of stress-induced wall motion abnormalities. The aim of this study was to test the hypothesis that strain imaging also requires expertise. Diagnostic accuracy for significant coronary artery disease was compared between visual and strain analysis with a bull's-eye map, and the effect of expertise on readers' accuracy during DSE was determined...
December 1, 2016: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/27912199/right-ventricular-dyssynchrony-predicts-clinical-outcomes-in-patients-with-pulmonary-hypertension
#4
Mitsushige Murata, Toshimitsu Tsugu, Takashi Kawakami, Masaharu Kataoka, Yugo Minakata, Jin Endo, Hikaru Tsuruta, Yuji Itabashi, Yuichiro Maekawa, Keiichi Fukuda
BACKGROUND: RV dyssynchrony has been described in patients with pulmonary hypertension (PH) and is an independent predictor of clinical worsening; however, the optimal method for measuring RV dyssynchrony has not been fully established. This study aimed to investigate whether RV dyssynchrony is correlated with hemodynamics and prognosis in PH patients and to identify the best parameter for evaluating RV dyssynchrony. METHODS: This study assessed 100 PH patients, measuring mean pulmonary artery pressure (mPAP), pulmonary vascular resistance (PVR), and cardiac index (CI) by right heart catheterization (RHC)...
November 14, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27910996/speckle-tracking-echocardiography-predicts-early-subclinical-anthracycline-cardiotoxicity-in-patients-with-breast-cancer
#5
Qi Tang, Yan Jiang, Yali Xu, Hongmei Xia
PURPOSE: This study aimed to assess the early changes of left ventricular (LV) and right ventricular (RV) mechanics associated with anthracycline treatment for breast cancer and to determine whether two-dimensional speckle tracking echocardiography (2D-STE) analysis could predict chemotherapy-induced cardiotoxicity. BACKGROUND: Anthracycline generates progressive LV dysfunction associated with a poor prognosis. Early detection of minor change of myocardial mechanics is thus important...
December 2, 2016: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27909859/sofa-score-and-left-ventricular-systolic-function-as-predictors-of-short-term-outcome-in-patients-with-sepsis
#6
Francesca Innocenti, Vittorio Palmieri, Aurelia Guzzo, Valerio Teodoro Stefanone, Chiara Donnini, Riccardo Pini
In a group of septic patients, we assess the short-term prognostic value of LV systolic performance, evaluated through conventional left ventricular ejection fraction (LVEF) and left ventricular global longitudinal strain (LV GLS). One hundred forty-seven patients with sepsis were recruited; LVEF by planimetry and peak GLS by 2D speckle tracking could be assessed within 24 h. The study population was stratified according to SOFA tertiles assessed at the time of the echocardiogram (G1: SOFA score <5; G2: SOFA score 5-7; G3: SOFA score >7)...
December 1, 2016: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/27908646/left-ventricular-function-in-healthy-term-neonates-during-the-transitional-period
#7
Amish Jain, Afif F El-Khuffash, Bart C W Kuipers, Adel Mohamed, Kim A Connelly, Patrick J McNamara, Robert P Jankov, Luc Mertens
OBJECTIVES: To evaluate whether incorporating conventional, tissue Doppler imaging and speckle tracking echocardiography are reliable and can characterize changes in left ventricular (LV) function properly in healthy neonates in the early transitional newborn period. STUDY DESIGN: A prospective observational study was conducted in 50 healthy term neonates with a mean ± SD gestational age and birth weight of 39.3 ± 1.2 weeks and 3.5 ± 0.44 kg, respectively...
November 28, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27906359/monitoring-blood-vital-bio-signs-using-secondary-speckle-patterns
#8
Talia Sirkis, Yevgeny Beiderman, Sergey Agdarov, Yafim Beiderman, Zeev Zalevsky
Continuous noninvasive measurement of vital bio-signs, such as cardiopulmonary parameters, is an important tool in the evaluation process of the patient's physiological condition and in the health monitoring of the patient. On the demand of new enabling technologies, some works have been done in continuous monitoring of blood pressure and pulse wave velocity. In this paper, we introduce further application of a novel technique for remote noncontact blood pulse wave velocity and pressure measurement based on tracking the temporal changes of reflected secondary speckle patterns produced in human skin when illuminated by a laser beam...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27906358/monitoring-blood-vital-bio-signs-using-secondary-speckle-patterns
#9
Talia Sirkis, Yevgeny Beiderman, Sergey Agdarov, Yafim Beiderman, Zeev Zalevsky
Continuous noninvasive measurement of vital bio-signs, such as cardiopulmonary parameters, is an important tool in the evaluation process of the patient's physiological condition and in the health monitoring of the patient. On the demand of new enabling technologies, some works have been done in continuous monitoring of blood pressure and pulse wave velocity. In this paper, we introduce further application of a novel technique for remote noncontact blood pulse wave velocity and pressure measurement based on tracking the temporal changes of reflected secondary speckle patterns produced in human skin when illuminated by a laser beam...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27900955/serum-levels-of-n-terminal-pro-b-type-natriuretic-peptide-as-a-diagnostic-marker-for-left-ventricular-dysfunction-in-children-with-end-stage-renal-disease-on-hemodialysis
#10
Amr Mohamed Zoair, Maher Ahmed Abdel-Hafez, Wegdan Mawlana, Mohamed Abdel-Rahman Sweylam
The objective of this study was to determine the diagnostic cutoff value of N-terminal-pro B-type natriuretic peptide (NT-pro BNP) as a marker of left ventricular (LV) dysfunction in children with end-stage renal disease (ESRD) on regular hemodialysis (HD). The study was carried out on thirty children with ESRD on regular HD and thirty healthy controls. Echocardiographic studies were done, including a conventional mode for ejection fraction, fractional shortening, tissue Doppler imaging, and longitudinal global strain by speckle tracking...
November 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27894255/silent-diabetic-cardiomyopathy-in-everyday-practice-a-clinical-and-echocardiographic-study
#11
Brane Loncarevic, Danijela Trifunovic, Ivan Soldatovic, Bosiljka Vujisic-Tesic
BACKGROUND: Whether type 2 diabetes mellitus (DM) in the absence of hypertension (HTA) and coronary artery disease (CAD) affects left ventricular (LV) phenotype and function among asymptomatic DM patients that can be easily discovered in everyday practice, what is the clinical risk profile for diabetic cardiomyopathy and how HTA and CAD modulate LV structure and function above diabetic cardiomyopathy, are still incompletely answered questions. METHODS: In 210 DM patients (group I: 70 asymptomatic DM patients without HTA and CAD; group II: 70 DM patients with HTA and no CAD; group III: 70 DM patients with CAD and no HTA) and 80 healthy individuals, comprehensive echocardiography including speckle tracking strain and strain rate analysis, was done...
November 29, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27894062/echocardiographic-comparison-between-left-ventricular-non-compaction-and-hypertrophic-cardiomyopathy
#12
Trine F Haland, Jørg Saberniak, Ida S Leren, Thor Edvardsen, Kristina H Haugaa
BACKGROUND: Modern imaging technology has improved detection of left ventricular non-compaction cardiomyopathy (LVNC). Hypertrophic cardiomyopathy (HCM) shares morphological features with LVNC, but prognosis and treatment strategies differ between LVNC and HCM. METHODS AND RESULTS: We aimed to compare global and regional LV myocardial function in LVNC and HCM. We hypothesized that apical function is reduced in LVNC due to the embryonic reduced compaction of the apex...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27893420/prognostic-value-of-three-dimensional-echocardiographic-right-ventricular-ejection-fraction-in-patients-with-pulmonary-arterial-hypertension
#13
Mitsushige Murata, Toshimitsu Tsugu, Takashi Kawakami, Masaharu Kataoka, Yugo Minakata, Jin Endo, Hikaru Tsuruta, Yuji Itabashi, Yuichiro Maekawa, Mitsuru Murata, Keiichi Fukuda
BACKGROUND: Right ventricular (RV) function is an independent predictor of clinical outcomes in patients with pulmonary arterial hypertension (PAH). However, it remains controversial which RV parameter should be measured as an appropriate index for the treatment of PAH. The aim of this study was to identify the most useful parameter that correlates with hemodynamics and predicts clinical outcomes in PAH. RESULTS: Most of the clinical and echocardiographic RV parameters were significantly correlated with pulmonary vascular resistance (PVR) as well as mean pulmonary arterial pressure (mPAP)...
November 22, 2016: Oncotarget
https://www.readbyqxmd.com/read/27891719/myocardial-strain-to-detect-subtle-left-ventricular-systolic-dysfunction
#14
REVIEW
Laurens F Tops, Victoria Delgado, Nina Ajmone Marsan, Jeroen J Bax
In daily clinical practice, LV systolic function is routinely assessed with the use of two-dimensional echocardiography. Using biplane LV end-diastolic and end-systolic volumes, LVEF is calculated. The introduction of real-time three-dimensional echocardiography has improved the accuracy of echocardiographic assessment of LVEF. However, calculated LVEF may not truly represent LV systolic function in specific cardiac diseases or when subtle LV dysfunction is present. Two-dimensional speckle tracking echocardiography enables assessment of myocardial strain, thereby providing detailed information on global and regional LV deformation...
November 27, 2016: European Journal of Heart Failure
https://www.readbyqxmd.com/read/27889869/left-ventricular-speckle-tracking-derived-cardiac-strain-and-cardiac-twist-mechanics-in-athletes-a-systematic-review-and-meta-analysis-of-controlled-studies
#15
REVIEW
Alexander Beaumont, Fergal Grace, Joanna Richards, John Hough, David Oxborough, Nicholas Sculthorpe
BACKGROUND: The athlete's heart is associated with physiological remodeling as a consequence of repetitive cardiac loading. The effect of exercise training on left ventricular (LV) cardiac strain and twist mechanics are equivocal, and no meta-analysis has been conducted to date. OBJECTIVE: The objective of this systematic review and meta-analysis was to review the literature pertaining to the effect of different forms of athletic training on cardiac strain and twist mechanics and determine the influence of traditional and contemporary sporting classifications on cardiac strain and twist mechanics...
November 26, 2016: Sports Medicine
https://www.readbyqxmd.com/read/27889554/familial-dilated-cardiomyopathy-a-multidisciplinary-entity-from-basic-screening-to-novel-circulating-biomarkers
#16
REVIEW
D de Gonzalo-Calvo, M Quezada, O Campuzano, A Perez-Serra, J Broncano, R Ayala, M Ramos, V Llorente-Cortes, S Blasco-Turrión, F J Morales, P Gonzalez, R Brugada, A Mangas, R Toro
Idiopathic dilated cardiomyopathy has become one of the most prevalent inherited cardiomyopathies over the past decades. Genetic screening of first-degree relatives has revealed that 30-50% of the cases have a familial origin. Similar to other heart diseases, familial dilated cardiomyopathy is characterized by a high genetic heterogeneity that complicates family studies. Cli'nical screening, 12-lead electrocardiogram and transthoracic echocardiogram are recommended for patients and first-degree family members...
November 8, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27889396/functional-recovery-of-regional-myocardial-deformation-in-patients-with-takotsubo-cardiomyopathy
#17
Sung-Ai Kim, Sang-Ho Jo, Kyoung-Ha Park, Hyun-Sook Kim, Sang-Jin Han, Woo-Jung Park
BACKGROUND: Takotsubo cardiomyopathy (TC) is acute, but completely reversible in the absence of significant coronary artery disease. This study aims to assess the functional recovery of regional myocardial deformation in patients with TC using 2-dimensional (2D) speckle tracking echocardiography. METHODS: Thirty-three patients diagnosed with TC (mean age 63 years, 26 female) prospectively underwent serial 2D echocardiography on day 1 (initial presentation), day 4 [the middle, interquartile range (IQR), 2-5 days], and day 21 (recovery, IQR 13-32 days)...
November 23, 2016: Journal of Cardiology
https://www.readbyqxmd.com/read/27885496/descending-aortic-mechanics-and-atrial-fibrillation-a-two-dimensional-speckle-tracking-transesophageal-echocardiography-study
#18
Rogério Teixeira, Ricardo Monteiro, Paulo Dinis, Maria José Santos, Ana Botelho, Nuno Quintal, Nuno Cardim, Lino Gonçalves
Vascular mechanics assessed with two-dimensional speckle tracking echocardiography (2D-STE) could be used as a new imaging surrogate of vascular stiffening. The CHA2DS2-VASc score is considered accurate as an estimate of stroke risk in non-valvular AF, although many potential stroke risk factors have not been included in this scoring method. The purpose of this research is to study the feasibility of evaluating vascular mechanics at the descending aorta in non-valvular AF patients using transesophageal 2D-STE and to analyze the association between descending aortic mechanics and stroke...
November 24, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27884828/effects-of-age-on-la-volume-and-strain-parameters-using-echocardiography-in-normal-black-population
#19
Ruchika Meel, Bijoy K Khandheria, Ferande Peters, Elena Libhaber, Samantha Nel, Mohammed R Essop
OBJECTIVE: Normal cut-off values for left atrial (LA) size and function may be altered by aging and ethnic differences. No age-related reference values for LA volumetric measurements or LA strain exist in Africans. We aimed to establish normal age-appropriate values of LA size and function in black Africans. Additionally, we studied the correlation between age, LA strain, and volumetric parameters. METHODS: In this prospective, cross-sectional study of 120 individuals (mean age 38...
November 24, 2016: Echo Research and Practice
https://www.readbyqxmd.com/read/27884247/machine-learning-algorithms-to-automate-morphological-and-functional-assessments-in-2d-echocardiography
#20
Sukrit Narula, Khader Shameer, Alaa Mabrouk Salem Omar, Joel T Dudley, Partho P Sengupta
BACKGROUND: Machine-learning models may aid cardiac phenotypic recognition by using features of cardiac tissue deformation. OBJECTIVES: This study investigated the diagnostic value of a machine-learning framework that incorporates speckle-tracking echocardiographic data for automated discrimination of hypertrophic cardiomyopathy (HCM) from physiological hypertrophy seen in athletes (ATH). METHODS: Expert-annotated speckle-tracking echocardiographic datasets obtained from 77 ATH and 62 HCM patients were used for developing an automated system...
November 29, 2016: Journal of the American College of Cardiology
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