دورية أكاديمية
Body Surface Potential Mapping during Ventricular Depolarization in Athletes with Prolonged PQ Interval after Exercise.
| العنوان: | Body Surface Potential Mapping during Ventricular Depolarization in Athletes with Prolonged PQ Interval after Exercise. |
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| عنوان ترانسليتريتد: | Mapeamento do Potencial da Superfície Corporal durante a Despolarização Ventricular em Atletas com Intervalo PQ Prolongado após Exercício. |
| المؤلفون: | Ivonina NI; Department of Comparative Cardiology - Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, Syktyvkar - Federação Russa., Ivonin AG; Department of Comparative Cardiology - Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, Syktyvkar - Federação Russa., Roshchevskaya IM; Department of Comparative Cardiology - Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, Syktyvkar - Federação Russa. |
| المصدر: | Arquivos brasileiros de cardiologia [Arq Bras Cardiol] 2024 Mar 04; Vol. 121 (1), pp. e20230179. Date of Electronic Publication: 2024 Mar 04 (Print Publication: 2024). |
| نوع المنشور: | Journal Article |
| اللغة: | Portuguese; English |
| بيانات الدورية: | Publisher: Sociedad Brasileira De Cardiologia Country of Publication: Brazil NLM ID: 0421031 Publication Model: eCollection Cited Medium: Internet ISSN: 1678-4170 (Electronic) Linking ISSN: 0066782X NLM ISO Abbreviation: Arq Bras Cardiol Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Sao Paulo : Sociedad Brasileira De Cardiologia |
| مواضيع طبية MeSH: | Body Surface Potential Mapping* , Exercise*, Humans ; Action Potentials ; Heart ; Athletes |
| مستخلص: | Background: Prolongation of the PQ interval, generally associated with an atrioventricular conduction delay, may be related to changes in intraventricular impulse spreading. Objective: To assess, using body surface potential mapping (BSPM), the process of ventricular depolarization in athletes with prolonged PQ intervals at rest and after exercise. Methods: The study included 7 cross-country skiers with a PQ interval of more than 200 ms (Prolonged-PQ group) and 7 with a PQ interval of less than 200 ms (Normal-PQ group). The BSPM from 64 unipolar torso leads was performed before (Pre-Ex) and after the bicycle exercise test (Post-Ex). Body surface equipotential maps were analyzed during ventricular depolarization. The significance level was 5%. Results: Compared to Normal-PQ athletes, the first and second periods of the stable position of cardiac potentials on the torso surface were longer, and the formation of the "saddle" potential distribution occurred later, at Pre-Ex, in Prolonged-PQ athletes. At Post-Ex, the Prolonged-PQ group showed a shortening of the first and second periods of stable potential distributions and a decrease in appearance time of the "saddle" phenomenon relative to Pre-Ex (to the values near to those of the Normal-PQ group). Additionally, at Post-Ex, the first inversion of potential distributions and the total duration of ventricular depolarization in Prolonged-PQ athletes decreased compared to Pre-Ex and with similar values in Normal-PQ athletes. Compared to Normal-PQ athletes, the second inversion was longer at Pre-Ex and Post-Ex in Prolonged-PQ athletes. Conclusion: Prolonged-PQ athletes had significant differences in the temporal characteristics of BSPM during ventricular depolarization both at rest and after exercise as compared to Normal-PQ athletes. |
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| فهرسة مساهمة: | Local Abstract: [Publisher, Portuguese] O prolongamento do intervalo PQ, geralmente associado a um atraso na condução atrioventricular, pode estar relacionado a alterações na propagação do impulso intraventricular. [Publisher, Portuguese] Avaliar, por meio do mapeamento do potencial de superfície corporal (BSPM), o processo de despolarização ventricular em atletas com intervalos PQ prolongados em repouso e após o exercício. [Publisher, Portuguese] O estudo incluiu 7 esquiadores cross-country com intervalo PQ superior a 200 ms (grupo PQ Prolongado) e 7 com intervalo PQ inferior a 200 ms (grupo PQ Normal). O BSPM de 64 derivações unipolares do tronco foi realizado antes (Pré-Ex) e após o teste ergométrico de bicicleta (Pós-Ex). Mapas equipotenciais da superfície corporal foram analisados durante a despolarização ventricular. O nível de significância foi de 5%. [Publisher, Portuguese] Comparado com atletas com PQ Normal, o primeiro e o segundo períodos de posição estável dos potenciais cardíacos na superfície do tronco foram mais longos, e a formação da distribuição de potencial “sela” ocorreu mais tarde, no Pré-Ex, nos atletas com PQ Prolongado. No Pós-Ex, o grupo PQ Prolongado apresentou um encurtamento do primeiro e segundo períodos de distribuições de potencial estáveis e uma diminuição no tempo de aparecimento do fenômeno “sela” em relação ao Pré-Ex (para valores próximos aos do Normal -Grupo PQ). Além disso, no Pós-Ex, a primeira inversão das distribuições de potencial e a duração total da despolarização ventricular em atletas com PQ Prolongado diminuíram em comparação com o Pré-Ex e com valores semelhantes em atletas com PQ Normal. Em comparação com atletas com PQ Normal, a segunda inversão foi mais longa no Pré-Ex e Pós-Ex em atletas com PQ Prolongado. [Publisher, Portuguese] Atletas com PQ prolongado apresentaram diferenças significativas nas características temporais do BSPM durante a despolarização ventricular, tanto em repouso quanto após o exercício, em comparação com atletas com PQ normal. |
| تواريخ الأحداث: | Date Created: 20240307 Date Completed: 20240308 Latest Revision: 20240511 |
| رمز التحديث: | 20240511 |
| مُعرف محوري في PubMed: | PMC11081108 |
| DOI: | 10.36660/abc.20230179 |
| PMID: | 38451560 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1678-4170 |
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| DOI: | 10.36660/abc.20230179 |