Background: Cryoablation is effective for not only ablating the myocardium, but also maintaining the structure of the ablated tissue. However, data comparing nitrous oxide (NO)-based and argon gas-based cryoprobes are limited.
Methods: This study was a follow-up study of a single-center, prospective, randomized controlled trial in which 60 patients were randomly allocated to either the NO group or the argon group. The primary endpoint of this study was sinus rhythm maintenance, and the key secondary endpoint was a composite of major adverse cardiovascular and cerebrovascular events (MACCEs) (ie, cardiac death, stroke, major bleeding, and readmission for heart failure).
Results: The baseline and operative characteristics of the patients in the NO and argon groups were comparable. At the 5-year follow-up, the rate of sinus rhythm maintenance was 81.8% in the NO group, whereas it was 78.5% in the argon group (P > .999). No significant differences in the rate of freedom from MACCEs (80.6% in the NO group vs 81.9% in the argon group; P = .978) were observed at the 5-year follow-up. The left atrial volume index decreased over time from 114.65 mL/m to 65.74 mL/m (P < .0001) and reached similar values in the 2 groups (P = .279) at the 5-year follow-up.
Conclusions: Both NO- and argon gas-based cryoprobes showed similar rates of sinus rhythm maintenance and freedom from MACCEs at the 5-year follow-up. Both cryoprobes might have similar efficacy and safety in the arrested heart in the long term.
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http://dx.doi.org/10.1016/j.athoracsur.2021.11.036 | DOI Listing |
ACS Appl Mater Interfaces
January 2025
State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China.
Solid-state Li-ion batteries are recognized as highly promising energy storage devices due to their ability to overcome issues related to the inferior cycle life and potential risks of traditional liquid Li-ion batteries. However, developing solid-state electrolytes with fast Li-ion conductivity continues to be a major challenge. In this study, we present a family of quasi-solid-state electrolytes (QSSEs) synthesized by confining liquid electrolytes within a N-rich porous carbon sponge, exhibiting superior Li-ion conduction for solid-state battery applications.
View Article and Find Full Text PDFPLoS One
December 2024
Division of Ophthalmology, Department of Special Surgery, Faculty of Medicine, Jordan University of Science & Technology, Irbid, Jordan.
Purpose: The emulsification of silicone oil (SO) remains poorly understood. In the present study, we investigated the physical properties of unused pharmaceutical SO samples under various conditions. Moreover, clinical correlations with the patients' SO samples were assessed.
View Article and Find Full Text PDFJ Biomed Mater Res A
January 2025
Biomedical Engineering Institute, Chiang Mai University, Chiang Mai, Thailand.
Plasma nitriding is one of the surface modifications that show more effectiveness than other methods. In this study, the plasma-based ion implantation (PBII) technique was performed on the surface of titanium alloy (Ti-6Al-4V, Ti64) using a mixture of nitrogen (N) and argon (Ar), resulting in a plasma-nitrided surface (TiN-Ti64). The surface composition of the TiN-Ti64 was verified through X-ray photoelectron spectroscopy (XPS).
View Article and Find Full Text PDFMaterials (Basel)
December 2024
Key Laboratory of Ultra-Weak Magnetic Field Measurement Technology, Ministry of Education, School of Instrumentation Science and Optoelectronics Engineering, Beihang University, Beijing 100191, China.
To achieve a near-zero magnetic field environment, the use of permalloy sheets with high-performance magnetic properties is essential. However, mainstream welding processes for magnetically shielded rooms (MSRs), such as argon arc welding and laser welding, can degrade the magnetic properties of the material. Additionally, neglecting the anisotropy of permalloy sheets can introduce unpredictable errors in the evaluation of MSR performance.
View Article and Find Full Text PDFFood Chem
December 2024
State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo 315211, China; Zhejiang-Malaysia Joint Research Laboratory for Agricultural Product Processing and Nutrition, Ningbo 315800, China. Electronic address:
Casein (CN) is a common allergen that is challenging to avoid in modern foods. The effect of cold argon plasma (CAP) on reducing CN antigenicity was investigated, focusing on alterations in epitope structure and sequence. CAP mainly contains hydroxyl radicals (∙OH).
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