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Diastolic function, cardiac CT.

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https://www.readbyqxmd.com/read/28176968/decreased-left-ventricular-stroke-volume-is-associated-with-low-grade-exercise-tolerance-in-patients-with-chronic-obstructive-pulmonary-disease
#1
Sumito Inoue, Yoko Shibata, Hiroyuki Kishi, Joji Nitobe, Tadateru Iwayama, Yoshinori Yashiro, Takako Nemoto, Kento Sato, Masamichi Sato, Tomomi Kimura, Akira Igarashi, Yoshikane Tokairin, Isao Kubota
BACKGROUND: Low-grade exercise tolerance is associated with a poor prognosis in patients with chronic obstructive pulmonary disease (COPD). The 6 min walk test (6MWT) is commonly used to evaluate exercise tolerance in patients with COPD. However, little is known regarding the relationship between cardiac function and exercise tolerance in patients with COPD. The aim of this study was to identify predictive factors in cardiac function for low-grade exercise tolerance in patients with stable COPD...
2017: BMJ Open Respiratory Research
https://www.readbyqxmd.com/read/28140622/exaggerated-interventricular-dependence-among-patients-with-pectus-excavatum-combined-assessment-with-cardiac-mri-and-chest-ct
#2
Alejandro Deviggiano, Javier Vallejos, Natalia Vina, Marcelo Martinez-Ferro, Gaston Bellia-Munzon, Patricia Carrascosa, Gaston A Rodríguez-Granillo
OBJECTIVE: We sought to explore whether patients with pectus excavatum have exaggerated interventricular dependence and to evaluate the impact of the malformation severity (assessed on CT) on both anatomic and functional cardiac parameters (assessed on cardiac MRI). SUBJECTS AND METHODS: The current study involved consecutive patients with a diagnosis of pectus excavatum who were referred to undergo cardiac MRI and chest CT to establish surgical candidacy or to define treatment strategies...
April 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28067199/computed-tomography-in-patients-with-tricuspid-regurgitation-prior-to-transcatheter-valve-repair-dynamic-analysis-of-the-annulus-with-an-individually-tailored-contrast-media-protocol
#3
Ricarda Hinzpeter, Matthias Eberhard, Philipp Burghard, Felix C Tanner, Maurizio Taramasso, Robert Manka, Gudrun Feuchtner, Francesco Maisano, Hatem Alkadhi
AIMS: The aim of this study is to present a contrast media (CM) protocol for the dynamic visualisation of the tricuspid valve (TV) and tricuspid annulus (TA) with CT. METHODS AND RESULTS: Fifteen patients with no cardiac abnormalities (controls), 15 patients with functional tricuspid regurgitation (FTR) <3+, and 13 patients with FTR ≥3+ underwent a dedicated cardiac CT protocol. Using advanced visualisation, segmentation and analysis software, the annular area, entire annular circumference, its three parts, and annular diameters were measured by two independent, blinded readers...
February 3, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28027742/prognostic-value-of-ct-derived-left-atrial-and-left-ventricular-measures-in-patients-with-acute-chest-pain
#4
Richard A P Takx, Rozemarijn Vliegenthart, U Joseph Schoepf, John W Nance, Fabian Bamberg, Joseph A Abro, Christine M Carr, Sheldon E Litwin, Paul Apfaltrer
PURPOSE: To determine which left atrial (LA) and left ventricular (LV) parameters are associated with future major adverse cardiac event (MACE) and whether these measurements have independent prognostic value beyond risk factors and computed tomography (CT)-derived coronary artery disease measures. MATERIALS AND METHODS: This retrospective analysis was performed under an IRB waiver and in HIPAA compliance. Subjects underwent coronary CT angiography (CCTA) using a dual-source CT system for acute chest pain evaluation...
January 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/27730776/cardiac-diastolic-dysfunction-and-regional-body-fat-distribution-in-insulin-resistant-peripubertal-obese-males
#5
A V Sahasrabuddhe, S U Pitale, Dhoble, J Shivalkar, M M Sagdeo
BACKGROUND: To evaluate presence of diastolic dysfunction in obese peripubertal males (8-18 years of age). To correlate diastolic dysfunction with insulin resistance, insulin levels and omental and epicardial fat. METHODS: Obese males (n=46) and age matched healthy lean controls (n=50) in the age group of 8-18 years were included in this study. Anthropometric measurements were recorded. Investigations done: Fasting blood sugar and serum insulin levels, lipid profile, 2-D Echocardiography to assess left ventricular diastolic function and epicardial fat, abdominal CT scan to measure omental fat and ultrasound for NAFLD...
February 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27589871/three-dimensional-echocardiography-in-various-types-of-heart-disease-a-comparison-study-of-magnetic-resonance-imaging-and-64-slice-computed-tomography-in-a-real-world-population
#6
Angelo Squeri, Stefano Censi, Claudio Reverberi, Nicola Gaibazzi, Marco Baldelli, Simone Maurizio Binno, Enrico Properzi, Stefano Bosi
BACKGROUND: Accurate quantification of left ventricular (LV) volumes [end-diastolic volume (EDV) and end-systolic volume (ESV)] and ejection fraction (EF) is of critical importance. The development of real-time three-dimensional echocardiography (RT3DE) has shown better correlation than two-dimensional (2D) echocardiography with magnetic resonance imaging (MRI) measurements. The aim of our study was to assess the accuracy of RT3DE and 64-slice computed tomography (CT) in the evaluation of LV volumes and function using MRI as the reference standard in a real-world population with various types of heart disease with different chamber geometry...
March 2017: Journal of Echocardiography
https://www.readbyqxmd.com/read/27577518/patient-related-factors-that-influence-coronary-artery-density-in-ccta-a-retrospective-clinical-study
#7
Peng Cao, Miao He, Chen Qiao, Nan Xu, Daoyi Huang, Gonghua Dai, Yibin Wang, Haihong Pan, Lei Zhang
OBJECTIVES: The aim of this study was to investigate the relationship between various patient-related factors (physical and cardiac hemodynamic parameters) and the coronary artery density on coronary CT angiography (CCTA). METHODS: A total of 64 patients (female: male ratio, 24:40; age, 58.2 years±9.3, age range, 31-81 years; mean body weight, 65.3 kg±11.6, range 40-88 kg) were effectively enrolled in this approved retrospective study. Patient-related physical factors including height, body weight (BW), body mass index (BMI), systolic blood pressure (BPsys), diastolic blood pressure (BPdis) and blood pulse pressure (Bp) were recorded, measured and calculated prior to the administration of contrast media during the CCTA...
September 2016: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/27461207/impact-of-age-and-sex-on-left-ventricular-function-determined-by-coronary-computed-tomographic-angiography-results-from-the-prospective-multicentre-confirm-study
#8
Catherine Gebhard, Ronny R Buechel, Barbara E Stähli, Heidi Gransar, Stephan Achenbach, Daniel S Berman, Matthew J Budoff, Tracy Q Callister, Benjamin Chow, Allison Dunning, Mouaz H Al-Mallah, Filippo Cademartiri, Kavitha Chinnaiyan, Ronen Rubinshtein, Hugo Marques, Augustin DeLago, Todd C Villines, Martin Hadamitzky, Joerg Hausleiter, Leslee J Shaw, Ricardo C Cury, Gudrun Feuchtner, Yong-Jin Kim, Erica Maffei, Gilbert Raff, Gianluca Pontone, Daniele Andreini, Hyuk-Jae Chang, Jonathon Leipsic, James K Min, Philipp A Kaufmann
BACKGROUND: Left ventricular (LV) volumetric and functional parameters measured with cardiac computed tomography (cardiac CT) augment risk prediction and discrimination for future mortality. Gender- and age-specific standard values for LV dimensions and systolic function obtained by 64-slice cardiac CT are lacking. METHODS AND RESULTS: 1155 patients from the Coronary CT Angiography EvaluatioN For Clinical Outcomes: An InteRnational Multicenter registry (54.5% males, mean age 53...
July 26, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/27130062/quantification-of-coronary-flow-using-dynamic-angiography-with-320-detector-row-ct-and-motion-coherence-image-processing-detection-of-ischemia-for-intermediate-coronary-stenosis
#9
COMPARATIVE STUDY
Michinobu Nagao, Yuzo Yamasaki, Takeshi Kamitani, Satoshi Kawanami, Koji Sagiyama, Torahiko Yamanouchi, Yamato Shimomiya, Tetsuya Matoba, Yasushi Mukai, Keita Odashiro, Shingo Baba, Yasuhiro Maruoka, Yoshiyuki Kitamura, Akihiro Nishie, Hiroshi Honda
OBJECTIVES: Anatomical coronary stenosis is not always indicative of functional stenosis, particularly for intermediate coronary lesions. The purpose of this study is to propose a new method for quantifying coronary flow using dynamic CT angiography for the whole heart (heart-DCT) and investigate its ability for detecting ischemia from intermediate coronary stenosis. METHODS: Participants comprised 36 patients with coronary artery disease who underwent heart-DCT using 320-detector CT with tube voltage of 80kV and myocardial perfusion scintigraphy (MPS)...
May 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27026794/quantitative-assessment-of-left-ventricular-function-and-myocardial-mass-a-comparison-of-coronary-ct-angiography-with-cardiac-mri-and-echocardiography
#10
Bedia Kara, Alaaddin Nayman, Ibrahim Guler, Enes Elvin Gul, Mustafa Koplay, Yahya Paksoy
BACKGROUND: The purpose of this study was to compare the left ventricular parameters obtained from multi-detector row computed tomography (MDCT) studies with two-dimensional echocardiography (2DE), and magnetic resonance imaging (MRI), which is accepted as the gold standard in the evaluation of left ventricular functions. The study also aimed to evaluate whether or not there is a relationship between the MR-Argus and CMR tools software programs which are used in post-process calculations of data obtained by MRI...
2016: Polish Journal of Radiology
https://www.readbyqxmd.com/read/26987408/effect-of-continuous-and-interval-aerobic-exercise-training-on-baroreflex-sensitivity-in-heart-failure
#11
Gustavo Santos Masson, Juliana Pereira Borges, Pedro Paulo Soares da Silva, Antônio Cláudio Lucas da Nóbrega, Eduardo Tibiriçá, Marcos Adriano Lessa
INTRODUCTION: The ability of continuous aerobic exercise training (AET) to increase baroreflex control and cardiac function in heart failure (HF) has been well described, but the comparison between continuous and interval AET on these functions is inconclusive. OBJECTIVES: To compare the effects of continuous and interval AET on cardiac function and baroreflex sensitivity (BrS) in an experimental model of HF. METHODS: Rats were divided into the following groups: continuous training (HF-CT), intense interval training (HF-IIT), moderate interval training (HF-MIT), sedentary group (HF-SED), and sham sedentary (SHAM-SED)...
May 2016: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/26812615/predominance-of-intrinsic-mechanism-of-resting-heart-rate-control-and-preserved-baroreflex-sensitivity-in-professional-cyclists-after-competitive-training
#12
Luciene Ferreira Azevedo, Patricia Perlingeiro, Denise Tessariol Hachul, Igor Lucas Gomes-Santos, Jeane Mike Tsutsui, Carlos Eduardo Negrao, Luciana D N J De Matos
Different season trainings may influence autonomic and non-autonomic cardiac control of heart rate and provokes specific adaptations on heart's structure in athletes. We investigated the influence of transition training (TT) and competitive training (CT) on resting heart rate, its mechanisms of control, spontaneous baroreflex sensitivity (BRS) and relationships between heart rate mechanisms and cardiac structure in professional cyclists (N = 10). Heart rate (ECG) and arterial blood pressure (Pulse Tonometry) were recorded continuously...
2016: PloS One
https://www.readbyqxmd.com/read/26775504/-normal-reference-values-and-predict-equations-of-heart-function
#13
Zhi-nan Lu, Sun Xing-guo, Song-shou Mao, M J Budoff, W W Stringer, Wan-gang Ge, Hao Li, Jie Huang, Fang Liu, Sheng-shou Hu
OBJECTIVE: For heart functional parameters, we commonly used normal range. The reference values and predict formulas of heart functional parameters and their relationships with individual characteristics are still lack. METHODS: Left ventricular (LV) volumes (end-diastolic volume and end-systolic volume), stroke volume (SV), ejection fraction (EF) and cardiac output (CO) were measured by cardiac CT angiography (CAT) in 1 200 healthy Caucasian volunteers, men 807 and women 393, and age 20-90yr...
July 2015: Chinese Journal of Applied Physiology
https://www.readbyqxmd.com/read/26739395/computed-tomography-derived-parameters-of-myocardial-morphology-and-function-in-black-and-white-patients-with-acute-chest-pain
#14
Richard A P Takx, Rozemarijn Vliegenthart, U Joseph Schoepf, Joseph A Abro, John W Nance, Ullrich Ebersberger, Fabian Bamberg, Christine M Carr, Paul Apfaltrer
Blacks have higher mortality and hospitalization rates because of congestive heart failure compared with white counterparts. Differences in cardiac structure and function may contribute to the racial disparity in cardiovascular outcomes. Our aim was to compare computed tomography (CT)-derived cardiac measurements between black patients with acute chest pain and age- and gender-matched white patients. We performed a retrospective analysis under an institutional review board waiver and in Health Insurance Portability and Accountability Act compliance...
February 1, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/26661322/functional-effects-of-losartan-in-hypertrophic-cardiomyopathy-a-randomised-clinical-trial
#15
Anna Axelsson, Kasper Iversen, Niels Vejlstrup, Carolyn Y Ho, Ole Havndrup, Klaus F Kofoed, Jakob Norsk, Morten Jensen, Henning Bundgaard
OBJECTIVE: There is a lack of disease-modifying treatments in hypertrophic cardiomyopathy (HCM). The aim of this randomised, placebo-controlled study was to assess if losartan could improve or ameliorate deterioration of cardiac function and exercise capacity. METHODS: Echocardiography, exercise test and MRI or CT were performed at baseline and after 12 months in 133 patients (52±13 years, 35% female) randomly allocated to losartan (100 mg/day) or placebo...
February 15, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/26424866/imaging-of-congenital-heart-disease-in-adults
#16
REVIEW
Sonya V Babu-Narayan, George Giannakoulas, Anne Marie Valente, Wei Li, Michael A Gatzoulis
Imaging is fundamental to the lifelong care of adult congenital heart disease (ACHD) patients. Echocardiography remains the first line imaging for inpatient, outpatient, or perioperative care. Cross-sectional imaging with cardiovascular magnetic resonance (CMR) or computed tomography (CT) provides complementary and invaluable information on cardiac and vascular anatomy and other intra-thoracic structures. Furthermore, CMR provides quantification of cardiac function and vascular flow. Cardiac catheterization is mostly reserved for assessment of pulmonary vascular resistance, ventricular end-diastolic pressure, and percutaneous interventions...
April 14, 2016: European Heart Journal
https://www.readbyqxmd.com/read/26420320/-left-ventricular-systolic-synchrony-assessed-by-phase-analysis-of-gated-myocardial-perfusion-imaging-in-patients-with-old-myocardial-infarction
#17
Jianfeng Wang, Yuetao Wang, Xiaoli Zhang, Ruijue Zhou, Rong Niu, Peiqi Lu
OBJECTIVE: To assess the left ventricular (LV) systolic synchrony by phase analysis of gated myocardial perfusion imaging (GMPI) with SPECT/CT in patients with old myocardial infarction (OMI) and further to identify independent predictors for LV dyssynchrony. METHODS: Seventy-six OMI patients and seventy-four healthy volunteers (control group) underwent resting GMPI from October 2010 to September 2013 in our hospital were included in this study. The left ventricular systolic synchrony parameters including phase histogram bandwidth (BW) and phase standard deviation (SD) were obtained by Cedars-Sinai quantitative gated SPECT (QGS) phase analysis technique, and LV cardiac function was also measured...
July 2015: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/26346012/the-evaluation-of-left-ventricular-functions-with-tissue-doppler-echocardiography-in-adults-with-celiac-disease
#18
Fatma E Akin, Cenk Sari, Sevil Özer-Sari, Aylin Demirezer-Bolat, Tahir Durmaz, Telat Keles, Osman Ersoy, Engin Bozkurt
BACKGROUND/AIM: The aim of this study was to investigate the effects of celiac disease on cardiac functions using tissue Doppler echocardiography (TDE). PATIENTS AND METHODS: The study included 30 patients with celiac disease (CD) and 30 healthy volunteers. Echocardiographic examinations were assessed by conventional echocardiography and tissue Doppler imaging. The peak systolic velocity (S ' m), early diastolic myocardial peak velocity (E ' m), late diastolic myocardial peak velocity (A ' m), E ' m/A ' m ratio, myocardial precontraction time (PCT ' m), myocardial contraction time (CT ' m), and myocardial isovolumetric relaxation time (IVRT ' m), E to E ' m ratio were measured...
September 8, 2015: Saudi Journal of Gastroenterology: Official Journal of the Saudi Gastroenterology Association
https://www.readbyqxmd.com/read/26277476/assessment-of-mitral-annuloplasty-ring-by-cardiac-computed-tomography-correlation-with-echocardiographic-parameters-and-comparison-between-two-different-ring-types
#19
COMPARATIVE STUDY
Young Joo Suh, Byung-Chul Chang, Dong Jin Im, Yun Jung Kim, Yoo Jin Hong, Geu-Ru Hong, Young Jin Kim
OBJECTIVES: This study investigated computed tomographic (CT) appearance after mitral ring annuloplasty, especially comparing CT findings between patients with normal pressure gradient (PG) and patients with functional mitral stenosis (MS) and between 2 commonly used types of annuloplasty ring. METHODS: A total of 45 cardiac CT scans in patients who underwent mitral ring annuloplasty (Carpentier-Edwards ring, n = 27; Duran ring, n = 18) were retrospectively reviewed...
November 2015: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/26269148/association-of-left-ventricular-diastolic-dysfunction-with-subclinical-coronary-atherosclerotic-disease-burden-using-coronary-artery-calcium-scoring
#20
Dimitrios Maragiannis, Robert C Schutt, Nickalaus L Gramze, Kongkiat Chaikriangkrai, Kelly McGregor, Karen Chin, Faisal Nabi, Stephen H Little, Sherif F Nagueh, Su Min Chang
AIM: Diastolic dysfunction is a common problem in patients with obesity, hypertension, diabetes, or coronary artery disease. The purpose of this study was to evaluate the association of left ventricular diastolic dysfunction with an abnormal coronary artery calcium score (CAC score). METHODS: This study considered a cohort of patients ≥ 18 years of age with normal ejection fraction who were admitted to the hospital with chest pain. All patients underwent regadenoson myocardial perfusion stress imaging and had no evidence of ischemia or infarction...
2015: Journal of Atherosclerosis and Thrombosis
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