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https://www.readbyqxmd.com/read/29238854/effect-of-weight-extremes-on-ventricular-volumes-and-myocardial-strain-in-repaired-tetralogy-of-fallot-as-measured-by-cmr
#1
Scott A Simpson, Suzanne L Field, Meng Xu, Benjamin R Saville, David A Parra, Jonathan H Soslow
Pulmonary valve replacement (PVR) in patients with repaired tetralogy of Fallot (rTOF-TAP) is often based on cardiac MRI (CMR) right ventricular (RV) volumes indexed to body surface area (BSA). Weight extremes result in increased patient morbidity and affect indexed measurements. We hypothesized that patients with rTOF-TAP at extremes of weight have (1) over- or underestimated indexed volumes and (2) altered parameters of cardiac function. CMRs in patients with rTOF-TAP were retrospectively reviewed; analysis included right and left ventricular (LV) volumes and ejection fractions (EF) and peak global LV circumferential strain (ε cc) from myocardial tagged images...
December 14, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/29238556/reliable-effective-number-of-breeders-adult-census-size-ratios-in-seasonal-breeding-species-opportunity-for-integrative-demographic-inferences-based-on-capture-mark-recapture-data-and-multilocus-genotypes
#2
Gregorio Sánchez-Montes, Jinliang Wang, Arturo H Ariño, José Luis Vizmanos, Iñigo Martínez-Solano
The ratio of the effective number of breeders (Nb) to the adult census size (Na), Nb/Na, approximates the departure from the standard capacity of a population to maintain genetic diversity in one reproductive season. This information is relevant for assessing population status, understanding evolutionary processes operating at local scales, and unraveling how life-history traits affect these processes. However, our knowledge on Nb/Na ratios in nature is limited because estimation of both parameters is challenging...
December 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29237609/diagnosis-and-prognosis-in-sudden-cardiac-arrest-survivors-without-coronary-artery-disease-utility-of-a-clinical-approach-using-cardiac-magnetic-resonance-imaging
#3
Patricia Rodrigues, Abhishek Joshi, Howell Williams, Mark Westwood, Steffen E Petersen, Filip Zemrak, Richard J Schilling, Claire Kirkby, Andrew Wragg, Charlotte Manisty, Saidi Mohiddin
BACKGROUND: Determining the pathogenesis of sudden cardiac arrest or periarrest without significant coronary artery disease is crucial for management and prognosis. Cardiovascular magnetic resonance (CMR) can detect morphological, functional, or tissue abnormalities, and we sought to evaluate the role of CMR in determining sudden cardiac arrest pathogenesis and prognosis in survivors. METHODS AND RESULTS: We retrospectively reviewed cardiac investigations and clinical outcomes in consecutive survivors of potentially fatal arrhythmias without coronary artery disease admitted to our institutions from 2008 to 2014...
December 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29237468/left-ventricular-synchrony-torsion-and-recoil-mechanics-in-ebstein-s-anomaly-insights-from-cardiovascular-magnetic-resonance
#4
Michael Steinmetz, Simon Usenbenz, Johannes Tammo Kowallick, Olga Hösch, Wieland Staab, Torben Lange, Shelby Kutty, Joachim Lotz, Gerd Hasenfuß, Thomas Paul, Andreas Schuster
BACKGROUND: Disease progression and heart failure development in Ebstein's Anomaly (EA) of the tricuspid valve is characterized by both right and left ventricular (LV) deterioration. The mechanisms underlying LV dysfunction and their role in heart failure development are incompletely understood. We hypothesized that LV dyssynchrony and impaired torsion and recoil mechanics induced by paradoxical movement of the basal septum may play a role in heart failure development. METHODS: 31 EA patients and 31 matched controls underwent prospective cardiovascular magnetic resonance (CMR)...
December 14, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29235722/alterations-in-ventricular-pumping-in-patients-with-atrial-septal-defect-at-rest-during-dobutamine-stress-and-after-defect-closure
#5
Sigurdur S Stephensen, Ellen Ostenfeld, Katarina Steding-Ehrenborg, Ulf Thilén, Einar Heiberg, Hakan Arheden, Marcus Carlsson
BACKGROUND: Regional ventricular pumping mechanisms in patients with volume-loaded right ventricles (RV) are altered, but the cause is unknown. The aim was to determine whether these changes in ventricular pumping mechanisms are influenced by the RV dilatation itself or the aetiology behind it. METHODS: Seventeen patients with atrial septal defects (ASD) and 10 healthy controls underwent cardiovascular magnetic resonance (CMR) at rest and during dobutamine/atropine stress...
December 13, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/29231290/cardiovascular-magnetic-resonance-imaging-and-clinical-performance-of-somatostatin-receptor-positron-emission-tomography-in-cardiac-sarcoidosis
#6
Carmen Pizarro, Folke Kluenker, Darius Dabir, Daniel Thomas, Florian C Gaertner, Markus Essler, Christian Grohé, Georg Nickenig, Dirk Skowasch
AIMS: Cardiac affection constitutes a major limiting condition in systemic sarcoidosis. The primary objective of this study was to investigate the persistence rate of cardiac sarcoid involvement by cardiovascular magnetic resonance (CMR) imaging in patients diagnosed with cardiac sarcoidosis (CS). Moreover, we examined the additional insights into myocardial damage's characteristics gained by somatostatin receptor scintigraphy. METHODS AND RESULTS: In a pilot study, we had previously identified cardiac involvement-diagnosed by CMR imaging-to be present in 29 of 188 patients (15...
December 12, 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/29230571/correlation-of-left-ventricular-dyssynchrony-on-gated-myocardial-perfusion-spect-analysis-with-extent-of-late-gadolinium-enhancement-on-cardiac-magnetic-resonance-imaging-in-hypertrophic-cardiomyopathy
#7
Hideaki Yuki, Daisuke Utsunomiya, Shinya Shiraishi, Seiji Takashio, Fumi Sakamoto, Noriko Tsuda, Seitaro Oda, Masafumi Kidoh, Takeshi Nakaura, Kenichi Tsujita, Yasuyuki Yamashita
Myocardial perfusion-single-photon emission computed tomography (MP-SPECT) is used to evaluate microvascular dysfunction and coexisting coronary artery disease in patients with hypertrophic cardiomyopathy (HCM). Phase analysis in gated MP-SPECT can provide additional information on left ventricular (LV) dyssynchrony, while the extent of late gadolinium enhancement (LGE) on cardiac magnetic resonance (CMR) imaging is an important prognostic factor in patients with HCM. We, therefore, sought to investigate the relationship of dyssynchrony by phase analysis on gated MP-SPECT and LGE on CMR imaging in 22 patients with HCM who underwent both stress/rest-gated MP-SPECT and contrast-enhanced CMR imaging...
December 11, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/29229493/intervendor-consistency-and-accuracy-of-left-ventricular-volume-measurements-using-three-dimensional-echocardiography
#8
Denisa Muraru, Antonella Cecchetto, Umberto Cucchini, Xiao Zhou, Roberto M Lang, Gabriella Romeo, Mani Vannan, Sorina Mihaila, Marcelo Haertel Miglioranza, Sabino Iliceto, Luigi P Badano
BACKGROUND: Intervendor consistency of left ventricular (LV) volume measurements using three-dimensional transthoracic echocardiography (3DTTE) has never been reported. Accordingly, we designed a prospective study to (1) compare head-to-head the accuracy of three three-dimensional echocardiography (3DE) systems in measuring LV volumes and ejection fraction (EF) against cardiac magnetic resonance (CMR); (2) assess the intervendor variability of LV volumes and EF; and (3) compare the accuracy of fully automated versus semiautomated (i...
December 8, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29228013/occult-rv-systolic-dysfunction-detected-by-cmr-derived-rv-circumferential-strain-in-patients-with-pectus-excavatum
#9
Vien T Truong, Candice Y Li, Rebeccah L Brown, Ryan A Moore, Victor F Garcia, Eric J Crotty, Michael D Taylor, Tam M N Ngo, Wojciech Mazur
AIMS: To investigate the right ventricular (RV) strain in pectus excavatum (PE) patients using cardiac magnetic resonance tissue tracking (CMR TT). MATERIALS AND METHODS: Fifty consecutive pectus excavatum patients, 10 to 32 years of age (mean age 15 ± 4 years), underwent routine cardiac magnetic resonance imaging (CMR) including standard measures of chest geometry and cardiac size and function. The control group consisted of 20 healthy patients with a mean age of 17 ± 5 years...
2017: PloS One
https://www.readbyqxmd.com/read/29223968/do-regulations-protect-workers-from-occupational-exposures-to-carcinogenic-mutagenic-and-reprotoxic-cmr-agents-in-france
#10
Nathalie Havet, Alexis Penot, Morgane Plantier, Barbara Charbotel, Magali Morelle, Béatrice Fervers
OBJECTIVE: This article explores the impact of regulations on the implementation of collective protections in France to occupational exposure to carcinogenic, mutagenic and reprotoxic (CMR) agents. METHODS: Individual data from the French national cross-sectional survey of occupational hazards conducted in 2010 were analysed. We investigated whether stricter regulations and longer exposures were associated with higher level of collective protection using multivariate logistic regressions...
December 9, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29214778/supplementary-diagnostic-landmarks-of-left-ventricular-non-compaction-on-magnetic-resonance-imaging
#11
Marko Boban, Vladimir Pesa, Natko Beck, Sime Manola, Marinko Zulj, Ante Rotim, Aleksandar Vcev
PURPOSE: Diagnostic criteria for left ventricular non-compaction (LVNC) are still a matter of dispute. The aim of our present study was to test the diagnostic value of two novel diagnostic cardiac magnetic resonance (CMR) parameters: proof of non-compact (NC) myocardium blood flow using T2 sequences and changes in geometry of the left ventricle. MATERIALS AND METHODS: The study included cases with LVNC and controls, from a data base formed in a period of 3.5 years (n=1890 exams), in which CMR protocol included T2 sequences...
January 2018: Yonsei Medical Journal
https://www.readbyqxmd.com/read/29212513/cardiac-amyloidosis-is-prevalent-in-older-patients-with-aortic-stenosis-and-carries-worse-prognosis
#12
João L Cavalcante, Shasank Rijal, Islam Abdelkarim, Andrew D Althouse, Michael S Sharbaugh, Yaron Fridman, Prem Soman, Daniel E Forman, John T Schindler, Thomas G Gleason, Joon S Lee, Erik B Schelbert
BACKGROUND: Non-invasive cardiac imaging allows detection of cardiac amyloidosis (CA) in patients with aortic stenosis (AS). Our objective was to estimate the prevalence of clinically suspected CA in patients with moderate and severe AS referred for cardiovascular magnetic resonance (CMR) in age and gender categories, and assess associations between AS-CA and all-cause mortality. METHODS: We retrospectively identified consecutive AS patients defined by echocardiography referred for further CMR assessment of valvular, myocardial, and aortic disease...
December 7, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29212500/correction-to-adenosine-stress-cmr-t1-mapping-detects-early-microvascular-dysfunction-in-patients-with-type-2-diabetes-mellitus-without-obstructive-coronary-artery-disease
#13
Eylem Levelt, Stefan K Piechnik, Alexander Liu, Rohan S Wijesurendra, Masliza Mahmod, Rina Ariga, Jane M Francis, Andreas Greiser, Kieran Clarke, Stefan Neubauer, Vanessa M Ferreira, Theodoros D Karamitsos
In the original publication of this article [1] Fig. 1 was incorrect due to the use of a colour bar with wrong range in error.
December 7, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29209744/preserved-myocardial-deformation-after-successful-coarctation-repair-a-cmr-feature-tracking-study
#14
Elles J Dijkema, Martijn G Slieker, Johannes M P J Breur, Tim Leiner, Heynric B Grotenhuis
Arterial vasculopathy and residual aortic obstruction can lead to left ventricular (LV) dysfunction in patients with coarctation of the aorta (CoA) related to adverse ventriculo-arterial coupling. This study aimed to investigate potential differences in LV myocardial deformation indices between repaired CoA patients and healthy controls. Twenty-two CoA patients (age 30 ± 10.6 years) after surgical repair (n = 12) or balloon angioplasty (BA) (n = 10) without residual stenosis, between 3 months and 16 years of age with > 10 years follow-up were compared to 22 healthy age- and gender-matched controls (age 30 ± 3...
December 5, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/29209671/neck-circumference-as-a-marker-of-obesity-and-a-predictor-of-cardiometabolic-risk-among-saudi-subjects
#15
Eman M Alfadhli, Alaa A Sandokji, Basma N Zahid, Mohammed A Makkawi, Reem F Alshenaifi, Tafani S Thani, Hanan A Habeeb
To determine the optimal cutoff value for neck circumference (NC) that define overweight/obesity and assess its predictive potential for cardiometabolic risks (CMR) among Saudi subjects.  Methods: A cross sectional study of 785 adults recruited from a public health awareness campaign in Medina, Saudi Arabia during June 2015. Waist circumference (WC), NC, body mass index (BMI), blood pressure (BP), and random blood glucose (RBG) were assessed, and the presence of CMR were collected by a questionnaire. Pearson's correlation coefficients were used to evaluate the associations of NC with other anthropometric indices and CMR...
December 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/29207945/meningococcal-arthritis-and-myopericarditis-a-case-report
#16
Lloyd Steele, Katie Bechman, Eoghan De Barra, Charles Mackworth-Young
BACKGROUND: We report the first adult case of Neisseria meningitidis W-135 presenting with meningococcal arthritis and myopericarditis concomitantly, without other classical features of meningococcal disease. CASE PRESENTATION: A 67-year-old Caucasian man presented with acute-onset polyarthralgia, myalgia, and fever. On examination he had polyarticular synovitis. An electrocardiogram (ECG) demonstrated ST-elevation in leads I, II, III, aVF, and V2-V6 without reciprocal depression, and a high-sensitivity troponin level was significantly elevated...
December 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29207943/auxiliary-diagnostic-potential-of-ventricle-geometry-and-late-gadolinium-enhancement-in-left-ventricular-non-compaction-non-randomized-case-control-study
#17
Marko Boban, Vladimir Pesa, Ivo Darko Gabric, Sime Manola, Viktor Persic, Helena Antic-Kauzlaric, Marinko Zulj, Aleksandar Vcev
BACKGROUND: There are still ambiguities existing in regard to left ventricular non-compaction (LVNC) diagnostic imaging. The aim of our study was to analyze diagnostic potential of late gadolinium enhancement (LGE) and ventricle geometry in patients with LVNC and controls. METHODS: Data on cardiac magnetic resonance imaging (CMR) studies for LVNC were reassessed from the hospital's database (3.75 years; n=1975 exams). Matching sample of controls included cases with no structural heart disease, hypertrophic or dilative cardiomyopathy, arrhythmogenic right ventricular dysplasia or subacute myocarditis...
December 6, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29202847/effects-of-adenosine-and-regadenoson-on-hemodynamics-measured-using-cardiovascular-magnetic-resonance-imaging
#18
Dustin M Thomas, Matthew R Minor, James K Aden, Christopher J Lisanti, Kevin E Steel
BACKGROUND: Adenosine or regadenoson vasodilator stress cardiovascular magnetic resonance (CMR) is an effective non-invasive strategy for evaluating symptomatic coronary artery disease. Vasodilator injection typically precedes ventricular functional sequences to efficiently reduce overall scanning times, though the effects of vasodilators on CMR-derived ventricular volumes and function are unknown. METHODS: We prospectively enrolled 25 healthy subjects to undergo consecutive adenosine and regadenoson administration...
December 4, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29202776/-image-navigated-3-dimensional-late-gadolinium-enhancement-cardiovascular-magnetic-resonance-imaging-feasibility-and-initial-clinical-results
#19
Konstantinos Bratis, Markus Henningsson, Chrysanthos Grigoratos, Matteo Dell'Omodarme, Konstantinos Chasapides, Rene Botnar, Eike Nagel
BACKGROUND: Image-navigated 3-dimensional late gadolinium enhancement (iNAV-3D LGE) is an advanced imaging technique that allows for direct respiratory motion correction of the heart. Its feasibility in a routine clinical setting has not been validated. METHODS: Twenty-three consecutive patients referred for cardiovascular magnetic resonance (CMR) examination including late gadolinium enhancement (LGE) imaging were prospectively enrolled. Image-navigated free-breathing 3-dimensional (3D) T1-weighted gradient-echo LGE and two-dimensional (2D LGE) images were acquired in random order on a 1...
December 4, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29201152/myocardial-injury-in-diabetic-patients-with-multivessel-coronary-artery-disease-after-revascularization-interventions
#20
Paulo Cury Rezende, Whady Hueb, Rosa Maria Rahmi, Thiago Luis Scudeler, Diogo Freitas Cardoso de Azevedo, Cibele Larrosa Garzillo, Carlos Alexandre Wainrober Segre, Jose Antonio Franchini Ramires, Roberto Kalil Filho
Background: Diabetic patients may be more susceptible to myocardial injury after coronary interventions. Thus, the aim of this study was to assess the release of cardiac biomarkers, CK-MB and troponin, and the findings of new late gadolinium enhancement (LGE) on cardiac magnetic resonance (CMR) in patients with type 2 diabetes mellitus after elective revascularization procedures for multivessel coronary artery disease (CAD). Methods: Patients with multivessel CAD and preserved systolic ventricular function underwent either elective percutaneous coronary intervention (PCI), off-pump or on-pump bypass surgery (CABG)...
2017: Diabetology & Metabolic Syndrome
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