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Heart rate variability after radiofrequency ablation of epicardial ganglionated plexuses on the ovine left atrium.
Kviesulaitis, Vilius; Puodziukynas, Aras; Pauza, Dainius Haroldas; Zabiela, Vytautas; Kazakevicius, Tomas; Vaitkevicius, Raimundas; Dirzinauskas, Evaldas; Semaska, Vytenis; Strazdas, Antanas; Unikaite, Ruta; Rysevaite, Kristina; Pauziene, Neringa; Zaliunas, Remigijus.
Afiliación
  • Kviesulaitis V; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania. viliuskviesulaitis@yahoo.com.
  • Puodziukynas A; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania.
  • Pauza DH; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania.
  • Zabiela V; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania.
  • Kazakevicius T; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania.
  • Vaitkevicius R; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania.
  • Dirzinauskas E; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania.
  • Semaska V; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania.
  • Strazdas A; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania.
  • Unikaite R; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania.
  • Rysevaite K; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania.
  • Pauziene N; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania.
  • Zaliunas R; Lithuanian University of Health Sciences, Eiveniu 2, LT-50161, Kaunas, Lithuania.
BMC Cardiovasc Disord ; 17(1): 292, 2017 Dec 12.
Article en En | MEDLINE | ID: mdl-29233092
BACKGROUND: Ganglionated plexuses (GP) are terminal parts of cardiac autonomous nervous system (ANS). Radiofrequency ablation (RFA) for atrial fibrillation (AF) possibly affects GP. Changes in heart rate variability (HRV) after RFA can reflect ANS modulation. METHODS: Epicardial RFA of GP on the left atrium (LA) was performed under the general anesthesia in 15 mature Romanov sheep. HRV was used to assess the alterations in autonomic regulation of the heart. A 24 - hour ECG monitoring was performed before the ablation, 2 days after it and at each of the 12 following months. Ablation sites were evaluated histologically. RESULTS: There was an instant change in HRV parameters after the ablation. A standard deviation of all intervals between normal QRS (SDNN), a square root of the mean of the squared differences between successive normal QRS intervals (RMSSD) along with HRV triangular index (TI), low frequency (LF) power and high frequency (HF) power decreased, while LF/HF ratio increased. Both the SDNN, LF power and the HF power changes persisted throughout the 12 - month follow - up. Significant decrease in RMSSD persisted only for 3 months, HRV TI for 6 months and increase in LF/HF ratio for 7 months of the follow - up. Afterwards these three parameters were not different from the preprocedural values. CONCLUSIONS: Epicardial RFA of GP's on the ovine left atrium has lasting effect on the main HRV parameters (SDNN, HF power and LF power). The normalization of RMSSD, HRV TI and LF/HF suggests that HRV after epicardial RFA of GPs on the left atrium might restore over time.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Función del Atrio Izquierdo / Ablación por Catéter / Desnervación Autonómica / Ganglios Autónomos / Atrios Cardíacos / Frecuencia Cardíaca Límite: Animals Idioma: En Revista: BMC Cardiovasc Disord Asunto de la revista: ANGIOLOGIA / CARDIOLOGIA Año: 2017 Tipo del documento: Article País de afiliación: Lituania Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Función del Atrio Izquierdo / Ablación por Catéter / Desnervación Autonómica / Ganglios Autónomos / Atrios Cardíacos / Frecuencia Cardíaca Límite: Animals Idioma: En Revista: BMC Cardiovasc Disord Asunto de la revista: ANGIOLOGIA / CARDIOLOGIA Año: 2017 Tipo del documento: Article País de afiliación: Lituania Pais de publicación: Reino Unido