A substantial and growing population of individuals with conductive implants face persistent challenges in accessing magnetic resonance imaging (MRI) due to risks associated with radiofrequency (RF) heating of implants. Recently, a novel approach based on altering MRI electric fields at the location of individual's implants has shown promise in substantially reducing RF heating in adult patients with deep brain stimulation devices. In this study, we present the results of electromagnetic and thermal simulation studies demonstrating the applicability of this novel technique in pediatric patients with cardiac implantable electronic devices (CIEDs) at 1.5T MR. The outcomes contribute valuable insights into the development of new MRI transmit coils that can be mechanically adjusted on a patient-specific basis to accommodate patients with conductive implants, particularly in the pediatric population.
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http://dx.doi.org/10.1109/EMBC53108.2024.10781950 | DOI Listing |
J Am Coll Cardiol
March 2025
Cedars Sinai Medical Center, Los Angeles, California, USA. Electronic address:
This updated Heart Valve Collaboratory framework addresses the growing concern for transcatheter valve failure (TVF) following transcatheter aortic valve replacement (TAVR). With the increasing volume of redo-TAV and surgical TAV explantation, there is a critical need for standardized pathways and protocols for evaluating TVF using echocardiography and cardiac computed tomography (CT) angiography. This document clarifies prior definitions of bioprosthetic valve deterioration and bioprosthetic valve failure in a practical, imaging directed context for TAVR.
View Article and Find Full Text PDFCan J Cardiol
March 2025
Department of Cardiology, Rabin Medical Center, Petah Tikva, Israel; The Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
Background: The use of transcatheter aortic valve implantation (TAVI) for severe aortic stenosis is expanding to patients across the entire spectrum of surgical risk. We aimed to perform a meta-analysis comparing TAVI and surgical aortic valve replacement (SAVR) in trials enrolling lower risk patients.
Methods: We conducted a meta-analysis of randomized controlled trials (RCTs) comparing safety and efficacy outcomes between TAVI and SAVR among lower risk patients (mean/median STS score <4).
Int J Cardiol
March 2025
Division of Cardiology, Yale University School of Medicine, Bridgeport Hospital, Bridgeport, CT, USA.
Background: Transcatheter Aortic Valve Implantation (TAVI) has become the routine standard of care in patients with severe aortic stenosis and prohibitive surgical risk worldwide. However, data on TAVI outcomes from Africa remain sparse. This study aimed to evaluate the outcomes of TAVI in Africa.
View Article and Find Full Text PDFHeart Rhythm
March 2025
Ospedale Giovanni Paolo II, ASP di Ragusa, Ragusa, Italy.
Background: Medtronic Micra VR and Abbott Aveir VR are two single-chamber ventricular leadless pacemakers (L-PMs) currently available in clinical practice. They differ in their design, fixation mechanism (tine-based fixation for Micra VR, screw-in helix fixation for Aveir VR), and implantation technique. Little comparative safety data are available for these LPMs.
View Article and Find Full Text PDFBJS Open
March 2025
Liverpool Centre for Cardiovascular Sciences, Liverpool Heart and Chest Hospital, Liverpool, UK.
Background: Acute Stanford type A aortic dissection is a severe emergency condition that, if left untreated, is associated with a high mortality rate. The extent of surgical repair may impact the outcomes of these patients.
Method: Patients operated for acute type A aortic dissection from a multicentre European registry were included.
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