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https://www.readbyqxmd.com/read/28812262/systolic-dysfunction-in-infarcted-mice-does-not-necessarily-lead-to-heart-failure-need-to-refine-preclinical-models
#1
María Villalba-Orero, Marina López-Olañeta, Pablo García-Pavía, Enrique Lara-Pezzi
Heart failure (HF) is a major cause of death and hospitalization worldwide. Despite advances in reducing mortality, prognosis remains poor and prevalence has reached epidemic proportions. The limitations of available preclinical models represent a major hurdle in the development of new therapies. Myocardial infarction (MI) is a main cause of HF in humans, and mouse models of MI are often used to study HF mechanisms and experimental treatments. We investigated whether MI in mice constitutes an appropriate model of HF...
August 15, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28806174/left-ventricular-apex-venting-in-high-risk-redo-sternotomy-with-severe-aortic-insufficiency-a-case-report
#2
Brett J Wakefield, Alexander J Leone, Shiva Sale
Redo cardiac surgery in patients with severe aortic insufficiency can present unique challenges to the anesthesiologist. We report a case highlighting the challenge and importance of interdisciplinary planning between cardiothoracic surgeons and anesthesiologists prior to high-risk surgery. Failure to place an endoaortic balloon and percutaneous coronary sinus catheter due to anatomical abnormalities prompted the adoption of an alternate technique involving apical ventricular venting to assist sternal reentry...
August 10, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28805231/the-histone-methyltransferase-mixed-lineage-leukemia-mll-3-may-play-a-potential-role-on-clinical-dilated-cardiomyopathy
#3
Ding-Sheng Jiang, Xin Yi, Rui Li, Yun-Shu Su, Jing Wang, Min-Lai Chen, Li-Gang Liu, Min Hu, Cai Cheng, Ping Zheng, Xue-Hai Zhu, Xiang Wei
Histone modifications play a critical role in the pathological processes of dilated cardiomyopathy (DCM). While the role and expression pattern of histone methyltransferases (HMTs), especially mixed lineage leukemia (MLL) families on DCM are unclear. To this end, twelve normal and fifteen DCM heart samples were included in the present study. A murine cardiac remodelling model was induced by transverse aortic constriction (TAC). Real-time PCR was performed to detect the expression levels of MLL families in the mouse and human left ventricles...
August 9, 2017: Molecular Medicine
https://www.readbyqxmd.com/read/28805198/severe-reversible-hypocalcemic-cardiomyopathy-diagnosed-36-years-after-subtotal-thyroidectomy-a-case-report
#4
Waldemar Elikowski, Małgorzata Małek-Elikowska, Patrycja Lachowska-Kotowska
Chronic hypocalcemia, irrespectively of its etiology, can lead to severe impairment of the left ventricular (LV) contractility manifesting as dilated cardiomyopathy, usually defined as hypocalcemic cardiomyopathy (hypocaCM). This rarely diagnosed type of heart failure (HF), can be completely reversible, when treated properly with calcium and vitamin D supplementation or, in some subjects, with human recombinant parathormone. A CASE REPORT: The authors present a case of a 60-year-old male admitted with advanced pulmonary congestion, recurrent pulmonary edema and pleural effusion...
July 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28804685/percutaneous-dilatational-tracheostomy-through-paramedian-technique-and-lateral-approach-in-a-patient-with-cervical-esophagostomy-a-case-report
#5
Kapil D Soni, Neha Garg, Richa Aggarwal, Ambuj Ambuj
BACKGROUND: Percutaneous dilatational tracheostomy (PDT) is a common surgical procedure and established as first choice for securing the airway in critically ill patients needing prolonged mechanical ventilation. There are case reports of open tracheostomy through paramedian approach without complications. This case report presents a case of PDT through paramedian approach. CASE REPORT: An 18 year old female, case of firearm injury underwent cervical esophagostomy on the left side of neck approaching midline...
2017: International Journal of Burns and Trauma
https://www.readbyqxmd.com/read/28803639/atrial-fibrillation-and-stroke-as-initial-manifestations-of-painless-type-a-aortic-dissection
#6
Claudia Stöllberger, Lilian Schäffl-Doweik, Maria Korn, Josef Finsterer
Aortic dissection is diagnostically challenging, especially in pain-free patients. Detection of acute ischemic stroke secondary to painless aortic dissection is a challenge for emergency physicians and neurologists. We report a previously healthy 58-years old female, admitted because of nausea, dizziness, somnolence, a left-sided hemiparesis and arterial hypotension. The electrocardiogram showed atrial fibrillation with ST-elevations and ST-depressions. Perfusion CT-imaging showed a dilatation of the aortic arch and intraluminal structures indicating an intima flap of aortic dissection...
July 21, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28803350/comparison-of-mitral-competence-after-mitral-repair-with-papillary-muscle-approximation-versus-papillary-muscle-relocation-for-functional-mitral-regurgitation
#7
Koji Furukawa, Mitsuhiro Yano, Eisaku Nakamura, Masakazu Matsuyama, Masanori Nishimura, Katsuya Kawagoe, Kunihide Nakamura
The purpose of this study was to evaluate the surgical results of papillary muscle approximation (PMA) and papillary muscle relocation (PMR) for functional mitral regurgitation (FMR) and to compare the effects of both procedures on the change in mitral regurgitation (MR) and echocardiogram parameters associated with tethering. Eighteen patients with moderate-to-severe FMR (MR grade ≥2) who underwent PMA or PMR were retrospectively analyzed. Underlying diseases were ischemic cardiomyopathy, idiopathic dilated cardiomyopathy, and aortic valve disease for seven, six, and five patients, respectively...
August 12, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28803209/20-hydroxyecdysone-attenuates-cardiac-remodeling-in-spontaneously-hypertensive-rats
#8
Sukanya Phungphong, Anusak Kijtawornrat, Sirinut Chaiduang, Vitoon Saengsirisuwan, Tepmanas Bupha-Intr
BACKGROUND: Ecdysteroids, a group of steroid hormones found in insects and many plants, have been shown to prevent various changes in mammalian tissues after female sex hormone deprivation. PURPOSE: To examine whether an ecdysteroid, 20-hydroxyecdysone (20-HE), exhibits regulatory or protective roles in the cardiovascular system. STUDY DESIGN/METHOD: Blood pressure and cardiac function were evaluated in spontaneously hypertensive rats (SHR) during and after daily treatment with 20-HE for six weeks...
August 9, 2017: Steroids
https://www.readbyqxmd.com/read/28802953/incompetent-and-dilated-left-ovarian-vein
#9
Umberto G Rossi, Maurizio Cariati
No abstract text is available yet for this article.
August 9, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28802510/aortic-dilatation-associated-with-bicuspid-aortic-valve-relation-to-sex-hemodynamics-and-valve-morphology-the-national-heart-lung-and-blood-institute-sponsored-national-registry-of-genetically-triggered-thoracic-aortic-aneurysms-and-cardiovascular-conditions
#10
Mary J Roman, Norma L Pugh, Richard B Devereux, Kim A Eagle, Kathryn Holmes, Scott A LeMaire, Rita K Milewski, Shaine A Morris, Siddharth K Prakash, Reed E Pyeritz, William J Ravekes, Ralph V Shohet, Howard K Song, Federico M Asch
This study analyzed the impact of sex, hemodynamic profile, and valve fusion pattern on aortopathy associated with bicuspid aortic valve (BAV). The National Heart Lung and Blood Institute-sponsored National Registry of Genetically Triggered Thoracic Aortic Aneurysms and Cardiovascular Conditions (GenTAC) provided comprehensive information on a large population of well-characterized patients with BAV. Of 969 enrolled patients with BAV, 551 (57%, 77% male) had already undergone valvular and/or aortic surgery...
July 14, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28802483/left-ventricular-systolic-myocardial-deformation-a%C3%A2-comparison-of-two-and-three-dimensional-echocardiography-in-children
#11
Sowmya Balasubramanian, Rajesh Punn, Shea N Smith, Helene Houle, Theresa A Tacy
BACKGROUND: The clinical applicability and reliability of three-dimensional (3D) speckle-tracking echocardiography has not been well studied in pediatric patients. The aim of this study was to compare two-dimensional (2D) echocardiography and 3DE real-time full-volume-derived strain and rotation indices in healthy children and patients with dilated cardiomyopathy (DCM). METHODS: Children with either normal function or DCM were prospectively recruited in an outpatient setting, and deformation indices, including circumferential, radial, and longitudinal strain and torsion, were measured by 2D and 3D echocardiography...
August 9, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28801688/-tricuspid-valve-regurgitation-indications-and-operative-techniques
#12
R Lange, N Piazza, T Günther
Functional tricuspid valve (TV) regurgitation secondary to left heart disease (e.g. mitral insufficiency and stenosis) is observed in 75% of the patients with TV regurgitation and is thus the most common etiology; therefore, the majority of patients who require TV surgery, undergo concomitant mitral and/or aortic valve surgery. Uncorrected moderate and severe TV regurgitation may persist or even worsen after mitral valve surgery, leading to progressive heart failure and death. Patients with moderate to severe TV regurgitation show a 3-year survival rate of 40%...
August 11, 2017: Herz
https://www.readbyqxmd.com/read/28801204/improved-post-processing-strategy-for-molli-based-tissue-characterization-allows-application-in-patients-with-dyspnoe-and-impaired-left-ventricular-function
#13
Thomas Kampf, Wolfgang Rudolf Bauer, Theresa Reiter
Contrast and non-contrast MRI based characterization of myocardium by T1-mapping will be of paramount importance to obtain biomarkers, e.g. fibrosis, which determines the risk of heart failure patients. T1-mapping by the standard post-processing of the modified look-locker inversion recovery (MOLLI) lacks of accuracy when trying to reduce its duration, which on the other hand, is highly desirable in patients with heart failure. The recently suggested inversion group fitting (IGF) technique, which considers more parameters for fitting, has a superior accuracy for long T1 times despite a shorter duration...
August 8, 2017: Zeitschrift Für Medizinische Physik
https://www.readbyqxmd.com/read/28798077/cardiovascular-susceptibility-to-in-vivo-ischemic-myocardial-injury-in-male-and-female-rat-offspring-exposed-to-prenatal-hypoxia
#14
Amin Shah, Nobutoshi Matsumura, Anita Quon, Jude S Morton, Jason R B Dyck, Sandra T Davidge
Intrauterine growth restriction (IUGR) following prenatal hypoxia exposure leads to a higher risk of developing cardiovascular disease (CVD) in later life. Our aim was to evaluate cardiac susceptibility and its pathophysiological mechanisms following acute myocardial infarction (MI) in adult rat offspring exposed to prenatal hypoxia. Male and female rat offspring, which experienced normoxia (21% O2) or hypoxia (11% O2) in utero underwent sham or MI surgery at 12 weeks of age. Echocardiographic data revealed that both sexes had systolic dysfunction following MI surgery, independent of prenatal hypoxia...
September 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28797427/low-level-tragus-stimulation-for-the-treatment-of-ischemia-and-reperfusion-injury-in-patients-with-st-segment-elevation-myocardial-infarction-a-proof-of-concept-study
#15
Lilei Yu, Bing Huang, Sunny S Po, Tuantuan Tan, Menglong Wang, Liping Zhou, Guannan Meng, Shenxu Yuan, Xiaoya Zhou, Xuefei Li, Zhuo Wang, Songyun Wang, Hong Jiang
OBJECTIVES: The aim of this study was to investigate whether low-level tragus stimulation (LL-TS) treatment could reduce myocardial ischemia-reperfusion injury in patients with ST-segment elevation myocardial infarction (STEMI). BACKGROUND: The authors' previous studies suggested that LL-TS could reduce the size of myocardial injury induced by ischemia. METHODS: Patients who presented with STEMI within 12 h of symptom onset, treated with primary percutaneous coronary intervention, were randomized to the LL-TS group (n = 47) or the control group (with sham stimulation [n = 48])...
August 14, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28797313/intravenous-immunoglobulins-in-children-with-new-onset-dilated-cardiomyopathy
#16
Josephine F Heidendael, Suzanne L Den Boer, Joanne G Wildenbeest, Michiel Dalinghaus, Bart Straver, Dasja Pajkrt
BACKGROUND: Dilated cardiomyopathy is a rare but serious disorder in children. No effective diagnostic or treatment tools are readily available. This study aimed to evaluate the efficacy of intravenous immunoglobulins in children with new onset dilated cardiomyopathy. Methods and results In this retrospective cohort study, 94 children with new onset dilated cardiomyopathy were followed during a median period of 33 months. All patients with secondary dilated cardiomyopathy - for example, genetic, auto-immune or structural defects - had been excluded...
August 11, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28795839/adverse-heart-lung-interactions-in-ventilator-induced-lung-injury
#17
Bhushan H Katira, Regan E Giesinger, Doreen Engelberts, Diana Zabini, Alik Kornecki, Gail Otulakowski, Takeshi Yoshida, Wolfgang M Kuebler, Patrick J McNamara, Kim A Connelly, Brian P Kavanagh
RATIONALE: The original in vivo study of ventilator-induced lung injury by Webb and Tierney (1974) reported that high VT with zero PEEP caused overwhelming lung injury, subsequently shown by others to be due to lung shear stress. OBJECTIVE: To reproduce the lung injury and edema in the 'Webb and Tierney' study and investigate the mechanism. METHODS: Sprague-Dawley rats (≈400 g) received mechanical ventilation for 60 min according to the protocol of Webb and Tierney (14/0, 30/0, 45/10, 45/0 cmH2O)...
August 10, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28794111/clinical-characteristics-and-long-term-outcome-of-hypertrophic-cardiomyopathy-in-individuals-with-a-mybpc3-myosin-binding-protein-c-founder-mutation
#18
Hannah G van Velzen, Arend F L Schinkel, Rogier A Oldenburg, Marjon A van Slegtenhorst, Ingrid M E Frohn-Mulder, Jolanda van der Velden, Michelle Michels
BACKGROUND: MYBPC3 (Myosin-binding protein C) founder mutations account for 35% of hypertrophic cardiomyopathy (HCM) cases in the Netherlands. We compared clinical characteristics and outcome of MYBPC3 founder mutation (FG+) HCM with nonfounder genotype-positive (G+) and genotype-negative (G-) HCM. METHODS AND RESULTS: The study included 680 subjects: 271 FG+ carriers, 132 G+ probands with HCM, and 277 G- probands with HCM. FG+ carriers included 134 FG+ probands with HCM, 54 FG+ relatives diagnosed with HCM after family screening, 74 FG+/phenotype-negative relatives, and 9 with noncompaction or dilated cardiomyopathy...
August 2017: Circulation. Cardiovascular Genetics
https://www.readbyqxmd.com/read/28793143/intraoperative-diagnosis-of-anderson-fabry-disease-in-patients-with-obstructive-hypertrophic-cardiomyopathy-undergoing-surgical-myectomy
#19
Franco Cecchi, Maria Iascone, Niccolò Maurizi, Laura Pezzoli, Irene Binaco, Elena Biagini, Maria Laura Fibbi, Iacopo Olivotto, Federico Pieruzzi, Ana Fruntelata, Lucian Dorobantu, Claudio Rapezzi, Paolo Ferrazzi
Importance: Diagnostic screening for Anderson-Fabry cardiomyopathy (AFC) is performed in the presence of specific clinical red flags in patients with hypertrophic cardiomyopathy (HCM) older than 25 years. However, left ventricular outflow tract obstruction (LVOTO) has been traditionally considered an exclusion criteria for AFC. Objective: To examine a series of patients diagnosed with HCM and severe basal LVOTO undergoing myectomy in whom the diagnosis of AFC was suspected by the cardiac surgeon intraoperatively and confirmed by histological and genetic examinations...
August 9, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28791992/-morphological-features-of-the-myocardium-of-the-atrial-appendages-in-patients-with-different-forms-of-atrial-fibrillation
#20
T V Sukhacheva, V A Vaskovsky, A Sh Revishvili, R A Serov
AIM: to analyze the morphological features of the myocardium of the atrial appendages in patients with different forms of atrial fibrillation (AF) and to compare the findings with the clinical parameters of patients. MATERIAL AND METHODS: Light and electron microscopies were used to examine the myocardium of the atrial appendages in adult patients with paroxysmal (PAF), persistent (PrAF), or long-standing persistent atrial fibrillation (LPAF) and in comparison group patients with sinus rhythm without history of AF...
2017: Arkhiv Patologii
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