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The risk of electromagnetic interference between microwave (MW) ablation and cardiac implantable electronic devices (CIEDs), ie, pacemakers and defibrillators, has not been fully evaluated. Fourteen MW ablations (kidney, n = 8; liver, n = 5; lung, n = 1) were performed in 13 patients with CIEDs in normal operating mode. Electrocardiography tracings, cardiovascular complications, tumor size, tumor-to-CIED distance, and tumor-to-device lead distance were recorded. Mean tumor size was 2.9 cm, mean tumor-to-CIED distance was 26.4 cm (range, 9-30 cm), and mean tumor-to-lead distance was 12.1 cm (range, 3.5-20 cm). No device-based cardiovascular complications or class C or higher complications per Society of Interventional Radiology criteria were identified. MW ablation appears to be safe in select patients with CIEDs.
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http://dx.doi.org/10.1016/j.jvir.2018.12.001 | DOI Listing |
ACS Appl Mater Interfaces
September 2025
School of Integrated Circuits, Shandong University, Jinan 250100, P. R. China.
Transient electronics that can degrade after fulfilling their designed functionalities offer transformative potentials in biomedical implants (eliminating secondary surgeries), ecofriendly consumer electronics (reducing e-waste), and secure systems. However, the development of reliable transient energy supplies remains a critical challenge, thus limiting their widespread implementation. Among various solutions, wireless power supplies via near-field inductive coupling stand out as particularly promising candidates.
View Article and Find Full Text PDFJACC Case Rep
September 2025
Department of Adult Cardiology, Jakaya Kikwete Cardiac Institute (JKCI), Dar es Salaam, Tanzania.
Background: Transcatheter pulmonary valve implantation (TPVI) has emerged as a viable alternative to surgical pulmonary valve replacement for patients with congenital heart disease and right ventricular outflow tract dysfunction. However, its adoption in low-resource settings has been limited.
Case Summary: We report the first successful TPVI procedures in Tanzania.
JACC Case Rep
September 2025
Cardiovascular Division, Department of Medicine, Froedtert and Medical College of Wisconsin, Milwaukee, Wisconsin, USA. Electronic address:
Baroreflex activation therapy (BAT) improves functional status, quality of life, and exercise capacity in patients with heart failure with reduced ejection fraction; however, its direct effects on reversing adverse cardiac remodeling as assessed by improvements in cardiac structure, function, and coupling with the arterial system remain unclear. We present 2 cases of patients who initially presented with decompensated heart failure, and despite initial medical therapy and continued outpatient follow-up, were unable to tolerate full escalation of guideline-directed medical therapy. The patients remained symptomatic, with high biomarker levels, poor functional capacity, severe heart failure symptoms, and objectively had decreased stroke volume, low left ventricular ejection fraction, and high left ventricular mass.
View Article and Find Full Text PDFBeilstein J Nanotechnol
September 2025
Department of Materials Science and Engineering, Seoul National University, Seoul, 08826 Republic of Korea.
Transient electronics are emerging as a promising class of devices designed to disappear after a defined operational period, addressing growing concerns over sustainability and long-term biocompatibility. Built from biodegradable materials that undergo hydrolysis or enzymatic degradation, these systems are particularly well suited for temporary implantable applications, such as neural monitors, wireless stimulators, and drug delivery vehicles, as well as environmentally benign electronics for soil or aquatic disposal. Despite their potential, key challenges remain in expanding the material set for diverse functionalities, achieving high-density integration for advanced operations, and enabling precise lifetime control through strategies such as protective encapsulation.
View Article and Find Full Text PDFNanoscale
September 2025
Quantum Technology Centre, Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory, 1(2), Moscow, 119991, Russia.
We report the observation of negative differential resistance (NDR) in single-atom single-electron devices based on arsenic, phosphorus and potassium dopants implanted in a silicon host matrix. All devices exhibit NDR, with the potassium-based one exhibiting NDR at room temperature because of the larger charging and confinement energies. Our experimental results are reproduced with a simple model that assumes sequential electron tunnelling through two series-connected charge centres, each having two discrete energy levels.
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