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hypertrophic cardiomyopathy

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https://www.readbyqxmd.com/read/29244217/the-follow-up-of-progressive-hypertrophic-cardiomyopathy-using-magnetic-resonance-rotating-frame-relaxation-times
#1
Muhammad Arsalan Khan, Hanne Laakso, Svetlana Laidinen, Sanna Kettunen, Tommi Heikura, Seppo Ylä-Herttuala, Timo Liimatainen
Magnetic resonance rotating frame relaxation times are an alternative non-contrast agent choice for the diagnosis of chronic myocardial infarct. Fibrosis typically occurs in progressive hypertrophic cardiomyopathy. Fibrosis has been imaged in myocardial infarcted tissue using rotating frame relaxation times, which provides the possibility to follow up progressive cardiomyopathy without contrast agents. Mild and severe left ventricular hypertrophy were induced in mice by transverse aortic constriction, and the longitudinal rotating frame relaxation times (T1ρ ) and relaxation along the fictitious field (TRAFF2 , TRAFF3 ) were measured at 5, 10, 24, 62 and 89 days after transverse aortic constriction in vivo...
December 15, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/29243322/transient-myocardial-thickening-in-cats-associated-with-heart-failure
#2
J Novo Matos, N Pereira, T Glaus, L Wilkie, K Borgeat, J Loureiro, J Silva, V Law, A Kranjc, D J Connolly, V Luis Fuentes
BACKGROUND: Cats with hypertrophic cardiomyopathy (HCM) and congestive heart failure (CHF) can have resolution of both left ventricular hypertrophy and CHF. OBJECTIVES: To describe the clinical characteristics of cats with transient myocardial thickening (TMT) and CHF compared with a control population of cats without resolution of HCM. ANIMALS: A total of 21 cats with TMT, 21 cats with HCM. METHODS: Retrospective study...
December 15, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/29243008/examining-the-psychosocial-impact-of-genetic-testing-for-cardiomyopathies
#3
Julia Wynn, David T Holland, Jimmy Duong, Priyanka Ahimaz, Wendy K Chung
Inherited cardiomyopathies, including hypertrophic cardiomyopathy (HCM) and dilated cardiomyopathy (DCM), are the most common monogenic cause of cardiac disease and can rarely lead to sudden cardiac death (SCD). They are characterized by incomplete and age-dependent penetrance and are usually initially symptomatic in adulthood yet can present in childhood as well. Over 20 genes have been identified to cause HCM, and more than 40 genes are known to cause DCM. Genetic testing for these genes has been integrated into medical care; however, the psychological impact of genetic testing and the impact of the uncertainty that comes with receiving these results have not been well studied...
December 15, 2017: Journal of Genetic Counseling
https://www.readbyqxmd.com/read/29240871/a-rare-phenotype-of-heterozygous-danon-disease-mimicking-apical-hypertrophic-cardiomyopathy
#4
Liuyu Yu, Ke Wan, Yuchi Han, Yucheng Chen
No abstract text is available yet for this article.
December 11, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29237655/evaluation-using-cardiac-insertable-devices-and-telephone-in-hypertrophic-cardiomyopathy-elucidate-hcm-rationale-and-design-a-prospective-observational-study-on-incidence-of-arrhythmias-in-sweden
#5
Peter Magnusson, Stellan Mörner
INTRODUCTION: Hypertrophic cardiomyopathy (HCM) is a heterogeneous disease associated with sudden cardiac death (SCD) mainly due to ventricular tachycardia (VT) or fibrillation even though life-threatening bradycardia occurs. Risk stratification takes several variables into consideration including non-sustained VT (NSVT). An implantable cardioverter defibrillator effectively prevents SCD.Atrial fibrillation (AF) is common among patients with HCM and warrants anticoagulation even without conventional risk factors according to European guidelines...
December 12, 2017: BMJ Open
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
#6
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/29237589/impact-of-demographic-features-lifestyle-and-comorbidities-on-the-clinical-expression-of-hypertrophic-cardiomyopathy
#7
REVIEW
Gherardo Finocchiaro, Emma Magavern, Gianfranco Sinagra, Euan Ashley, Michael Papadakis, Maite Tome-Esteban, Sanjay Sharma, Iacopo Olivotto
No abstract text is available yet for this article.
December 13, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29234143/risk-of-glomerular-filtration-rate-decline-in-patients-with-hypertrophic-cardiomyopathy-and-obstructive-sleep-apnoea
#8
Shao-Yun Wang, Jing Luo, Yi-Fei Dong, Xu-Yang Liu, Ying-Li Fan, Ming Deng, Da-Wei Chen, Ping Li, Xiao-Shu Cheng
Sleep apnoea is associated with chronic kidney diseases. A high obstructive sleep apnoea (OSA) prevalence is shown in patients with hypertrophic cardiomyopathy (HCM). Whether the presence of OSA would affect the renal function of patients with HCM is unknown. Forty-five consecutive patients with HCM were divided into the HCM OSA- and OSA+ groups. Forty-three patients with OSA without HCM were recruited as controls. Clinical indices, including estimated glomerular filtration rate (eGFR) and urine 8-hydroxy-2-deoxyguanosine (8-OHdG), were measured...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29233648/left-atrial-dysfunction-in-light-chain-cardiac-amyloidosis-and-hypertrophic-cardiomyopathy-a-comparative-three-dimensional-speckle-tracking-echocardiographic-analysis-from-the-magyar-path-study
#9
Dóra Földeák, Árpád Kormányos, Péter Domsik, Anita Kalapos, Györgyike Á Piros, Nóra Ambrus, Zénó Ajtay, Róbert Sepp, Zita Borbényi, Tamás Forster, Attila Nemes
INTRODUCTION: While cardiac amyloidosis (CA) is a rare systemic disease characterized by extracellular deposition of protein-derived fibrils, hypertrophic cardiomyopathy (HCM) is histopathologically characterized by myocyte hypertrophy and disarray, interstitial fibrosis, and small intramural coronary arteriole dysplasia. The aim of the present study was to compare left atrial (LA) volumetric and functional characteristics between light-chain (AL) CA and HCM by three-dimensional (3D) speckle-tracking echocardiography (STE)...
December 9, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/29232302/minimally-invasive-septal-myectomy-for-hypertrophic-obstructive-cardiomyopathy
#10
Farah N Musharbash, Matthew R Schill, Matthew C Henn, Ralph J Damiano
Surgical septal myectomy is the treatment of choice for patients with symptomatic hypertrophic obstructive cardiomyopathy refractory to medications. This report describes our minimally invasive approach for performing a septal myectomy via a ministernotomy that has been used at our institution for more than a decade. In particular, patient preparation, surgical technique, and clinical considerations are highlighted. Performed properly, this minimally invasive technique is a feasible and effective approach in our experience...
December 7, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29231893/hypertrophic-cardiomyopathy-past-present-and-future
#11
REVIEW
Alphonsus C Liew, Vassilios S Vassiliou, Robert Cooper, Claire E Raphael
Hypertrophic cardiomyopathy (HCM) is the most common genetic cardiomyopathy with a prevalence of 1 in 500 in the general population. Since the first pathological case series at post mortem in 1957, we have come a long way in its understanding, diagnosis and management. Here, we will describe the history of our understanding of HCM including the initial disease findings, diagnostic methods and treatment options. We will review the current guidelines for the diagnosis and management of HCM, current gaps in the evidence base and discuss the new and promising developments in this field...
December 12, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29231770/pharmacological-and-non-pharmacological-treatment-of-obstructive-hypertrophic-cardiomyopathy
#12
Luis F Hidalgo, Srihari S Naidu, Wilbert S Aronow
Hypertrophic obstructive cardiomyopathy has been rising in prevalence, due to increased awareness and advanced imaging. For the symptomatic patient, pharmacological management remains an effective approach to the majority of patients with obstructive hypertrophic cardiomyopathy. However, a significant subset fails to improve sufficiently with medical therapy initially, or progressively becomes more symptomatic despite augmented medications over time. Most of the advances in the treatment of obstructive hypertrophic cardiomyopathy have therefore been made in the area of non-pharmacologic management, particularly septal reduction therapy...
December 12, 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/29230874/symmetric-dimethylarginine-in-cats-with-hypertrophic-cardiomyopathy-and-diabetes-mellitus
#13
R Langhorn, I N Kieler, J Koch, L B Christiansen, L R Jessen
BACKGROUND: Symmetric dimethylarginine (SDMA) has been increasingly used as a marker of early chronic kidney disease (CKD) in cats, but little is known about the influence of comorbidities on SDMA in this species. HYPOTHESIS: Hypertrophic cardiomyopathy (HCM) and diabetes mellitus (DM), independently of CKD, are associated with changes in serum SDMA. ANIMALS: Ninety-four cats (17 with CKD, 40 with HCM, 17 with DM, and 20 healthy controls)...
December 12, 2017: Journal of Veterinary Internal Medicine
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
#14
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/29230178/human-cardiac-31p-mr-spectroscopy-at-3-tesla-cannot-detect-failing-myocardial-energy-homeostasis-during-exercise
#15
Adrianus J Bakermans, Jason N Bazil, Aart J Nederveen, Gustav J Strijkers, S Matthijs Boekholdt, Daniel A Beard, Jeroen A L Jeneson
Phosphorus-31 magnetic resonance spectroscopy (31P-MRS) is a unique non-invasive imaging modality for probing in vivo high-energy phosphate metabolism in the human heart. We investigated whether current 31P-MRS methodology would allow for clinical applications to detect exercise-induced changes in (patho-)physiological myocardial energy metabolism. Hereto, measurement variability and repeatability of three commonly used localized 31P-MRS methods [3D image-selected in vivo spectroscopy (ISIS) and 1D ISIS with 1D chemical shift imaging (CSI) oriented either perpendicular or parallel to the surface coil] to quantify the myocardial phosphocreatine (PCr) to adenosine triphosphate (ATP) ratio in healthy humans (n = 8) at rest were determined on a clinical 3 Tesla MR system...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29229517/defibrillation-threshold-testing-in-hypertrophic-cardiomyopathy-as-simple-as-possible-but-not-simpler
#16
EDITORIAL
N A Mark Estes, Barry J Maron
No abstract text is available yet for this article.
December 8, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29228435/review-of-recent-advances-in-the-management-of-hypertrophic-cardiomyopathy
#17
Y Cao, P-Y Zhang
Hypertrophic cardiomyopathy (HCM) is a complex but common monogenic cardiovascular disorder characterized by unexplained non dilated left ventricular (LV) thickening in the absence of another cardiac or systemic disease. The condition is associated with sudden and unexpected death in young individuals including trained athletes. HCM represents a genetic disorder caused by mutations in genes encoding sarcomeric proteins of the cardiac myocyte. This review article discusses the genetics behind HCM, its clinical presentation, and diagnosis and the present-day pharmacological management of HCM...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29228150/quadricuspid-mitral-valve-a-rare-phenotype-associated-with-hypertrophic-cardiomyopathy
#18
Marissa L Kauss, William Miranda, Lawrence J Sinak, Hector I Michelena
No abstract text is available yet for this article.
December 8, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29225831/delayed-right-ventricular-lead-perforation-complicated-by-tamponade-in-biventricular-hypertrophic-cardiomyopathy
#19
Najla Kourireche, Amal Boutakhrit, Fatima Chikhi, Ibtissam Fellat, Mohammed Cherti
This report highlights the importance of a more cautious approach in a patient with a history of implanted cardiac leads presenting with chest pain or dyspnea, to prevent overlooking cardiac lead perforations especially in hypertrophic cardiomyopathy which seems to be not absolutely protective.
December 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/29222138/application-of-large-scale-aptamer-based-proteomic-profiling-to-planned-myocardial-infarctions
#20
Jaison Jacob, Debby Ngo, Nancy Finkel, Rebecca Pitts, Scott Gleim, Mark D Benson, Michelle J Keyes, Laurie A Farrell, Thomas Morgan, Lori L Jennings, Robert Gerszten
Background -Emerging proteomic technologies using novel affinity-based reagents allow for efficient multiplexing with high sample throughput. To identify early biomarkers of myocardial injury, we recently applied an aptamer-based proteomic profiling platform that measures 1,129 proteins to samples from patients undergoing septal alcohol ablation for hypertrophic cardiomyopathy, a human model of "planned myocardial injury" (PMI). Here we examined the scalability of this approach using a markedly expanded platform to study a far broader range of human proteins in the context of myocardial injury...
December 8, 2017: Circulation
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