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Wyświetlanie 1-2 z 2
Tytuł:
Periprocedural decrease in tumor necrosis factor alpha is a risk factor for atrial fibrillation recurrence after ablation
Autorzy:
Szczerba, Ewa
Koźluk, Edward
Januszkiewicz, Łukasz
Lisicka, Monika
Nowak, Justyna
Kondracka, Agnieszka
Majstrak, Joanna
Rodkiewicz, Dariusz
Piątkowska, Agnieszka
Kiliszek, Marek
Opolski, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/25712809.pdf
Data publikacji:
2022-12-05
Wydawca:
Gdański Uniwersytet Medyczny
Tematy:
atrial fibrillation
ablation
TNF-alpha
Opis:
Background Concentration of tumor necrosis factor alpha (TNF-alpha) might be useful in selecting patients with paroxysmal atrial fibrillation (PAF) who will benefit the most from pulmonary vein isolation. Material and methods We performed prospective cohort study among patients with PAF who had sinus rhythm prior to undergoing either radiofrequency ablation or cryoablation procedure. Blood samples were collected at the start of the procedure and 16-24 h after. TNF-alpha concentrations were measured. Follow-up data was obtained during a structured telephone interview and 24-hour ECG Holter monitoring 12 months after the ablation procedure. Results Thirty seven patients were enrolled. After 12-month follow-up 27 patients maintained sinus rhythm, 8 had recurrence of AF and 2 were lost to follow-up. There was no significant correlation between TNF-alpha concentrations in any of the samples and the recurrence of arrhythmia (for pre-procedural samples: 1.75 pg/ml vs 1.74 pg/ml; p=0.72; for post-procedural samples: 1.49 pg/ml vs 1.79 pg/ml; p=0.16). In patients who had a recurrence of AF, we observed a decrease in the periprocedural TNF-alpha concentration (-0.12 pg/ml vs 0.05 pg/ml; p=0.05). Conclusions Neither pre- nor post-procedural TNF-alpha concentrations are predictive of ablation outcome in patients with PAF. We observed a decrease in the periprocedural TNF-alpha concentration in patients who had AF recurrence.
Źródło:
European Journal of Translational and Clinical Medicine; 2022, 5, 2; 16-23
2657-3148
2657-3156
Pojawia się w:
European Journal of Translational and Clinical Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
TiAl-based Ohmic Contacts to p-type 4H-SiC
Autorzy:
Martychowiec, Agnieszka
Kwietniewski, Norbert
Kondracka, Kinga
Werbowy, Aleksander
Sochacki, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/1844507.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ohmic contact
SiC
silicon carbide
TiAl
Opis:
This paper describes successfully formed ohmic contacts to p-type 4H-SiC based on titanium-aluminum alloys. Four different metallization structures were examined, varying in aluminum layer thickness (25, 50, 75, 100 nm) and with constant thickness of the titanium layer (50 nm). Structures were annealed within the temperature range of 800°C - 1100°C and then electrically characterized. The best electrical parameters and linear, ohmic character of contacts demonstrated structures with Al layer thickness equal or greater than that of Ti layer and annealed at temperatures of 1000°C or higher.
Źródło:
International Journal of Electronics and Telecommunications; 2021, 67, 3; 459-463
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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