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https://www.readbyqxmd.com/read/29147786/risk-factors-for-development-of-ectopic-atrial-tachycardia-in-post-operative-congenital-heart-disease
#1
Bradley C Clark, John T Berger, Charles I Berul, Richard A Jonas, Jonathan R Kaltman, Julianne Lapsa, Dilip S Nath, Elizabeth D Sherwin, Pranava Sinha, David Zurakowski, Jeffrey P Moak
Ectopic atrial tachycardia (EAT) is common in surgically repaired congenital heart disease (CHD) and carries the potential for significant hemodynamic compromise. Our objective was to determine the incidence, and risk factors of EAT after CHD surgery. Prospective study of patients that underwent surgery for CHD from February to October 2016 was performed. Demographic, perioperative and electrophysiologic data were collected. Sustained EAT (> 30 s) was documented by telemetry or electrocardiogram and confirmed by a pediatric electrophysiologist...
November 17, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/29133056/therapeutic-potential-of-songorine-a-diterpenoid-alkaloid-of-the-genus-aconitum
#2
REVIEW
Haroon Khan, Seyed Mohammad Nabavi, Antoni Sureda, Nikolay Mehterov, Diana Gulei, Ioana Berindan-Neagoe, Hiroaki Taniguchi, Atanas G Atanasov
Alkaloids are well-studied secondary metabolites, with recent preclinical studies evidencing that many of them exhibit anti-cancer, anti-depressant, anti-nociceptive, anti-inflammatory, anti-pyretic, anti-platelet, anti-oxidant, and anti-bacterial properties. Aconitum is a genus rich of diverse alkaloids. More than 450 alkaloids have been identified in a variety of species. Songorine is a C20 diterpenoid alkaloid and 12-keto analog of napelline, isolated from Aconitum soongaricum and was associated with a heterogeneous panel of biological functions...
November 10, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29107412/ketamine-infusion-for-refractory-status-epilepticus-a-case-report-of-cardiac-arrest
#3
Lauren Koffman, Ho Yan Yiu, Salia Farrokh, John Lewin, Romergryko Geocadin, Wendy Ziai
BACKGROUND: Refractory status epilepticus (RSE) has a high mortality rate and is often difficult to treat. When traditional therapies fail ketamine may be considered. There are limited reports of adverse cardiac events with the use of ketamine for RSE and no reports of cardiac arrest in this context. OBJECTIVE: Evaluate the occurrence of cardiac arrhythmias associated with the use of ketamine for RSE. METHODS: Retrospective chart review of nine patients who underwent ketamine infusion for RSE...
October 26, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29084142/omega-3-index-and-anti-arrhythmic-potential-of-omega-3-pufas
#4
REVIEW
Narcis Tribulova, Barbara Szeiffova Bacova, Tamara Egan Benova, Vladimir Knezl, Miroslav Barancik, Jan Slezak
Omega-3 polyunsaturated fatty acids (PUFAs), namely eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are permanent subjects of interest in relation to the protection of cardiovascular health and the prevention of the incidence of both ventricular and atrial arrhythmias. The purpose of this updated review is to focus on the novel cellular and molecular effects of omega-3 PUFAs, in the context of the mechanisms and factors involved in the development of cardiac arrhythmias; to provide results of the most recent studies on the omega-3 PUFA anti-arrhythmic efficacy and to discuss the lack of the benefit in relation to omega-3 PUFA status...
October 30, 2017: Nutrients
https://www.readbyqxmd.com/read/29072257/therapeutic-effects-of-a-taurine-magnesium-coordination-compound-on-experimental-models-of-type-2-short-qt-syndrome
#5
Meng-Yao An, Kai Sun, Yan Li, Ying-Ying Pan, Yong-Qiang Yin, Yi Kang, Tao Sun, Hong Wu, Wei-Zhen Gao, Jian-Shi Lou
Short QT syndrome (SQTS) is a genetic arrhythmogenic disease that can cause malignant arrhythmia and sudden cardiac death. The current therapies for SQTS have application restrictions. We previously found that Mg· (NH2CH2CH2SO3)2· H2O, a taurine-magnesium coordination compound (TMCC) exerted anti-arrhythmic effects with low toxicity. In this study we established 3 different models to assess the potential anti-arrhythmic effects of TMCC on type 2 short QT syndrome (SQT2). In Langendorff guinea pig-perfused hearts, perfusion of pinacidil (20 μmol/L) significantly shortened the QT interval and QTpeak and increased rTp-Te (P<0...
October 26, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29069243/ventricular-arrhythmia-in-chronic-kidney-disease-patients
#6
Fabiana Oliveira Bastos Bonato, Maria Eugênia Fernandes Canziani
Patients with chronic kidney disease (CKD) are susceptible to the occurrence of ventricular arrhythmias. The leading cause of death in dialysis patients is cardiac arrhythmias. The pathophysiology of arrhythmias in this population is complex and seems to be related to structural cardiac abnormalities caused by CKD, associated with several triggers, such as water and electrolyte disorders, hormonal conditions, arrhythmogenic drugs, and the dialysis procedure itself. Little is known about the clinical outcomes in CKD patients with asymptomatic ventricular arrhythmias...
April 2017: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/29067911/syncope-in-a-young-man-role-of-purkinje-fibres-in-idiopathic-ventricular-fibrillation
#7
Claire A Martin, Laurence Nunn, Pier D Lambiase
A young man suffered cardiac arrests with polymorphic ventricular tachycardia (PVT) and ventricular fibrillation (VF) triggered by ventricular premature contractions (PVCs). The arrhythmia was resistant to anti-arrhythmics, so after ICD implantation he underwent successful ablation of the triggering VE beat, which was pace-mapped to the left posterior hemi-fascicle. We review the evidence for the role of the Purkinje network in the initiation and maintenance of PVT and VF, postulating a channelopathy as a possible underlying cause, and provide recommendations for PVC ablation...
July 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29057462/igf-1-activates-pi3k-akt-signaling-to-protect-human-retinal-pigment-epithelial-cells-from-amiodarone-induced-oxidative-injury
#8
Rifang Liao, Fengxia Yan, Zhuanping Zeng, Haitao Wang, Kaifeng Qiu, Jinying Xu, Wenhua Zheng
BACKGROUND AND PURPOSE: Amiodarone (AM) is one of the most effective anti-arrhythmic drugs available. However, clinical applications of AM are limited by its toxic side effects including optic toxicity. The purpose of this study was to investigate the toxic effect of AM on D407 cells (a human Retinal Pigmented Epithelial cell line) and the mechanisms of the protective effect of insulin-like growth factor-1 (IGF-1). EXPERIMENTAL APPROACH: The involvement of the kinases, Akt and Erk, was analyzed by Western blot...
October 22, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29049708/two-staged-hybrid-ablation-of-non-paroxysmal-atrial-fibrillation-clinical-outcomes-and-functional-improvements-after-1%C3%A2-year
#9
Petr Budera, Pavel Osmancik, David Talavera, Anna Kraupnerova, Richard Fojt, Jana Zdarska, Tomas Vanek, Zbynek Straka
OBJECTIVES: Hybrid ablation of atrial fibrillation (AF) is a promising treatment strategy; however, data regarding its efficacy and safety are still limited. METHODS: Patients with non-paroxysmal AF were enrolled. First, a thoracoscopic, epicardial isolation of pulmonary veins and the left atrial posterior wall ('box lesion') was performed; a novel unipolar/bipolar radiofrequency device was used. Moreover, in 12 patients enrolled thereafter, the left atrial appendage was occluded...
July 31, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29043080/recent-advances-in-rhythm-control-for-atrial-fibrillation
#10
REVIEW
Richard Bond, Brian Olshansky, Paulus Kirchhof
Atrial fibrillation (AF) remains a difficult management problem. The restoration and maintenance of sinus rhythm-rhythm control therapy-can markedly improve symptoms and haemodynamics for patients who have paroxysmal or persistent AF, but some patients fare well with rate control alone. Sinus rhythm can be achieved with anti-arrhythmic drugs or electrical cardioversion, but the maintenance of sinus rhythm without recurrence is more challenging. Catheter ablation of the AF triggers is more effective than anti-arrhythmic drugs at maintaining sinus rhythm...
2017: F1000Research
https://www.readbyqxmd.com/read/29023952/pharmacokinetics-and-electrophysiological-effects-of-sotalol-hydrochloride-in-horses
#11
B Broux, D De Clercq, A Decloedt, L Vera, M Devreese, R Gehring, S Croubels, G van Loon
BACKGROUND: Arrhythmias in horses may require long term anti-arrhythmic therapy. Unfortunately, oral anti-arrhythmic drugs for use in horses are currently scarce. In human patients and small animals, sotalol, a β-blocker with class III anti-arrhythmic properties, is often used for long-term treatment. OBJECTIVES: To determine the pharmacokinetics of sotalol at multiple oral dosages in unfasted horses, as well as the effects on electro- and echocardiographic measurements, right atrial and ventricular monophasic action potential (MAP) and effective refractory period (ERP)...
October 10, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/29023775/prenatal-sonographic-monitoring-of-progressive-cardiac-damages-caused-by-anti-ro-antibodies-a-case-report
#12
Fuanglada Tongprasert, Rekwan Sittiwangkul, Thitikarn Lerthiranwong, Theera Tongsong
Maternal autoantibodies to Ro/SSA are often linked to congenital heart block and rarely associated with structural defects. We describe the case of a fetus with anti-Ro-mediated second-degree block at 19 weeks, which progressed to a complete block, fibroelastosis, atrioventricular valve insufficiency, and semilunar valve stenosis/insufficiency at 20, 22, 24, and 26 weeks, respectively, although the fetus received transplacental anti-arrhythmic drugs. The 2150-g fetus was vaginally delivered at 35 weeks. An external pacemaker was inserted immediately after birth and replaced with permanent pacemaker at the age of 3 months...
October 12, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/29020304/identification-of-a-targeted-and-testable-antiarrhythmic-therapy-for-long-qt-syndrome-type-2-using-a-patient-specific-cellular-model
#13
Ashish Mehta, Chrishan J A Ramachandra, Pritpal Singh, Anuja Chitre, Chong Hui Lua, Manuela Mura, Lia Crotti, Philip Wong, Peter J Schwartz, Massimiliano Gnecchi, Winston Shim
Aims: Loss-of-function mutations in the hERG gene causes long-QT syndrome type 2 (LQT2), a condition associated with reduced IKr current. Four different mutation classes define the molecular mechanisms impairing hERG. Among them, Class 2 mutations determine hERG trafficking defects. Lumacaftor (LUM) is a drug acting on channel trafficking already successfully tested for cystic fibrosis and its safety profile is well known. We hypothesize that LUM might rescue also hERG trafficking defects in LQT2 and exert anti-arrhythmic effects...
July 21, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29018520/prophylactic-catheter-ablation-for-ventricular-tachycardia-are-we-there-yet
#14
Rahul K Mukherjee, Louisa O'Neill, Mark D O'Neill
Ventricular tachycardia (VT), often degenerating into ventricular fibrillation, is the leading cause of sudden cardiac death. Catheter ablation of VT is associated with relatively low, long-term success rates, while the optimal timing of ablation in patients with ischaemic and non-ischaemic cardiomyopathy remains unclear. Contemporary practice in most centres is to consider ablation late in the disease process following the failure of anti-arrhythmic medications and/or following recurrent implantable cardioverter-defibrillator shocks...
August 2017: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/28986334/chronic-obstructive-pulmonary-disease-as-a-risk-factor-for-ventricular-arrhythmias-independent-of-left-ventricular-function
#15
Tomas Konecny, Kiran R Somers, Jae Yoon Park, Alan John, Marek Orban, Rahul Doshi, Paul D Scanlon, Samuel J Asirvatham, Charanjit S Rihal, Peter A Brady
BACKGROUND: The association between chronic obstructive pulmonary disease (COPD) and sudden cardiac death has not been fully elucidated. OBJECTIVE: The purpose of this study was to investigate whether decreased left ventricular ejection fraction (LVEF) can explain the increased rate of ventricular tachycardia (VT) in COPD. METHODS: This retrospective study included consecutive adult patients who underwent pulmonary function testing (PFT), Holter monitoring, and transthoracic echocardiography...
October 3, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28979725/effect-of-nicorandil-on-qt-dispersion-in-patients-with-stable-angina-pectoris-undergoing-elective-angioplasty-a-triple-blind-randomized-placebo-controlled-study
#16
Homa Fal Suleimani, Ali Eshraghi, Mehdi Hasanzadeh Daloee, Sara Hoseini, Nima Nakhaee
BACKGROUND: Nicorandil leads to the relaxation of fine vascular smooth muscle, and thus causes vasodilatation of major epicardial. Also, it has anti-arrhythmic and cardio-protective effects by improving reperfusion, and ultimately leads to a reduction in microvascular damage caused by percutaneous coronary intervention (PCI). OBJECTIVE: The aim of this study was to determine the effect of nicorandil on QT interval dispersion (QTd) in patients with stable angina pectoris during elective angioplasty...
August 2017: Electronic Physician
https://www.readbyqxmd.com/read/28960089/efficacy-and-safety-of-dronedarone-in-the-treatment-of-patients-with-atrial-fibrillation
#17
Mohammed Hasan Khan, Yogita Rochlani, Wilbert S Aronow
Dronedarone, a derivative of amiodarone with structural modifications, was designed to have similar electrophysiological properties with a less toxic profile. Areas covered: Brief overview of the pharmacology of dronedarone followed by a summary of randomized clinical trials testing the efficacy of dronedarone in maintaining normal sinus rhythm and clinical outcomes associated with these trials. In depth discussion and commentary on trial findings which may seem contradictory at first approach and brief discussion of post-marketing surveillance studies...
October 6, 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/28959829/-research-progress-on-pharmacological-action-and-clinical-application-of-stephania-tetrandrae-radix
#18
REVIEW
Rong Wang, Teng-Mao Ma, Fei Liu, Hui-Qin Gao
Stephania Tetrandrae Radix is one of the common traditional Chinese medicines, which has bitter and pungent taste as well as cold properties. It can subside edema, get rid of rheumatism and relieve pain. Therefore, it is mainly used for the treatment of rheumatism arthralgia, edema, dysuria, athlete's foot, swollen wet sores and other diseases in traditional Chinese medicine(TCM). Stephania Tetrandrae Radix is mainly composed of dual-benzyl isoquinoline alkaloids, including tetrandrine, fangchinoline and so on...
February 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28958592/amiodarone-lidocaine-magnesium-or-placebo-in-shock-refractory-ventricular-arrhythmia-a-bayesian-network-meta-analysis
#19
REVIEW
Safi U Khan, Lydia Winnicka, Muhammad A Saleem, Hammad Rahman, Najeeb Rehman
Recent evidence challenges, the superiority of amiodarone, compared to other anti-arrhythmic medications, as the agent of choice in pulseless ventricular tachycardia (VT) or ventricular fibrillation (VF). We conducted Bayesian network and traditional meta-analyses to investigate the relative efficacies of amiodarone, lidocaine, magnesium (MgSO4) and placebo as treatments for pulseless VT or VF. Eleven studies [5200 patients, 7 randomized trials (4, 611 patients) and 4 non-randomized studies (589 patients)], were included in this meta-analysis...
November 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28950829/statins-and-left-ventricular-function
#20
Agamemnon Bakakos, Evangelos Oikonomou, Georgia Vogiatzi, Gerasimos Siasos, Sotiris Tsalamandris, Alexios Antonopoulos, Costas Mourouzis, Petros Fountoulakis, Manolis Vavuranakis, Dimitris Tousoulis
BACKGROUND: Statins are a well-established class of drugs in both preventing coronary events and treating cardiovascular atherosclerotic disease, however their use in heart failure is still in debate. OBJECTIVES: To establish whether statins' pleiotropic actions in endothelium, inflammation, remodeling of the heart and anti-arrhythmic potential may be in favorable of heart failure patients. METHODS: We proceed to literature search of English bibliography under the terms heart failure, statins, 3-hydroxy-3-methylglutaryl-coenzyme A reductase inhibitors...
September 26, 2017: Current Pharmaceutical Design
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