Ventricular arrhythmias in heart failure with reduced ejection fraction
Purpose of review To provide a framework for approaching ventricular arrhythmias in the setting of cardiomyopathy, outline the latest evidence-based recommendations for catheter ablation and device therapy, and discuss novel treatment strategies. Recent findings Risk stratification of ventricular arrhythmias in systolic heart failure has evolved, with an increasing role for cardiac magnetic resonance imaging to identify underlying substrate and scar burden. Medical therapy for heart failure has greatly improved, and the role of primary prevention defibrillators in nonischemic cardiomyopathy has become more ambiguous. Catheter ablation is superior to medical therapy for arrhythmia control and should be considered early, particularly for premature ventricular complex mediated cardiomyopathy. Novel technologies to deliver energy to previously inaccessible sites include high-impedance catheter irrigants, multicatheter bipolar ablation, specialized catheters with extendable needles, transcoronary ethanol infusion, and stereotactic body radiation therapy. Summary Assessment and management of ventricular arrhythmias in systolic heart failure requires a systematic, multimodality approach aimed at identifying the underlying cause and reversible causes, optimizing medical therapy, assessing need for an implantable cardioverter defibrillator, and considering catheter ablation. Further research will focus on prevention of disease progression, improved risk stratification, and abl...
Publication date: Available online 30 May 2020Source: Nanomedicine: Nanotechnology, Biology and MedicineAuthor(s): Renjie Wang, Zhengwei Cao, Lan Wei, Lin Bai, Hui Wang, Shiyi Zhou, Shuyue Zhan, Bin Ji, Zibo Li, Shi Gao, Jin Xie, Qingjie Ma
Publication date: Available online 30 May 2020Source: Neuroscience &Biobehavioral ReviewsAuthor(s): Sandra J. Rosenthal, Travis Josephs, Oleg Kovtun, Richard McCarty
This article introduces 4D-flow MRI as it is currently used for blood flow visualization and quantification of cardiac hemodynamic parameters. It discusses its advantages relative to other flow MRI techniques and describes its potential clinical applications. PMID: 32471542 [PubMed - as supplied by publisher]
Abstract There are several vascular ultrasound technologies that are useful in challenging diagnostic situations. New vascular ultrasound applications include directional power Doppler ultrasound, contrast-enhanced ultrasound, B-flow imaging, microvascular imaging, 3-dimensional vascular ultrasound, intravascular ultrasound, photoacoustic imaging, and vascular elastography. All these techniques are complementary to Doppler ultrasound and provide greater ability to visualize small vessels, have higher sensitivity to detect slow flow, and better assess vascular wall and lumen while overcoming limitations color Doppl...
Conclusions: Hypothyroidism and difficult airways are a common sequel of RT. Selected cancer patients with subclinical hypothyroidism had a smooth perioperative course.
Publication date: August 2020Source: IJC Heart &Vasculature, Volume 29Author(s): Inder Anand, Jeffrey L. Ardell, Doug Gregory, Imad Libbus, Lorenzo DiCarlo, Rajendra K. Premchand, Kamal Sharma, Sanjay Mittal, Rufino Monteiro
Authors: Tzikas S, Papadopoulos C, Evangeliou AP, Vassilikos V PMID: 32470561 [PubMed - as supplied by publisher]
CONCLUSIONS: Further studies are required in order to establish the complicated association between SARS-CoV-2 infection and its effects on the cardiovascular system. Our knowledge regarding diagnostic approaches, therapeutic management and preventive measures is constantly enriched throughout an abundance of ongoing research in the respective fields. PMID: 32472990 [PubMed - as supplied by publisher]
CONCLUSIONS: If the results are confirmed in further studies, iCEB seems to be a simple, easily measurable and non-invasive marker to predict cannabinoid-induced ventricular arrhythmias. PMID: 32472984 [PubMed - as supplied by publisher]
Authors: Ezeani M Abstract Diabetes, obesity and increased body mass index are associated with changes in metabolism that lead to an inadequate reservoir or use of ATP in the heart and susceptibility to arrhythmia. Lack of availability of ATP and abnormal levels of metabolic end products can cause gene reprogramming and electrical remodelling that make myfibers susceptible to arrhythmia. Understanding the metabolic aberrations that lead to arrhythmia require better understanding of cardiac metabolism. Here, I discuss metabolic genes, enzymes and reducing equivalents and functional aspects of metabolic-induced arrhy...