Atrial Floating Pacing With a Novel Pacing Configuration Using a Conventional Monophasic Impulse - First Acute Results in Patients

Abstract Aims Ablation index (AI) is a marker of lesion quality during catheter ablation that incorporates contact force, time, and power in a weighted formula. This index was originally developed for pulmonary vein isolation as well as other left atrial procedures. The aim of our study is to evaluate the feasibility and efficacy of the AI for the ablation of the cavotricuspid isthmus (CTI) in patients presenting with typical atrial flutter (AFL). Methods and results This prospective multicentre non-randomized study enrolled 412 consecutive patients with typical AFL undergoing AI-guided cavotricuspid isthmus ablation. The procedure was performed targeting an AI of 500 and an inter-lesion distance measurement of ≤6 mm. The primary endpoints were CTI ‘first-pass’ block and persistent block after a 20-min waiting time. Secondary endpoints included procedural and radiofrequency duration and fluoroscopic time. A total of 412 consecutive patients were enrolled in 31 centres (mean age 64.9 ± 9.8; 72.1% males and 27.7% with structural heart disease). The CTI bidirectional ‘first-pass’ block was reached in 355 patients (88.3%), whereas CTI block at the end of the waiting time was achieved in 405 patients (98.3%). Mean procedural, radiofrequency, and fluoroscopic time were 56.5 ± 28.1, 7.8 ± 4.8, and 1.9 ± 4.8 min, respectively. There were no major procedural complications. There was no significant inter-operator variability in the ability to achieve any of the primary endpoints. Conclusion AI-guided ablation with an inter-lesion distance ≤6 mm represents an effective, safe, and highly reproducible strategy to achieve bidirectional block in the treatment of typical AFL.

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Efeitos de Protocolos de Treinamento Intervalado e Contínuo na Reabilitação de Indivíduos Cardiopatas

Ensaios e Ciência C Biológicas Agrárias e da Saúde ◽

10.17921/1415-6938.2018v22n1p53-57 ◽

2018 ◽

Vol 22 (1) ◽

pp. 53

Author(s):

Adriano Sakaida Del Giudice ◽

Israel Gustavo Guedes Sene ◽

José Geraldo Rodrigues de Moraes Junior ◽

Anderson Martelli ◽

Lucas Delbim

Keyword(s):

Cardiac Rehabilitation ◽

Cardiovascular Events ◽

Interval Training ◽

Training Volume ◽

Efficacy And Safety ◽

High Intensity Interval Training ◽

Continuous Training ◽

Functional Reserve ◽

High Intensity Interval ◽

Acute Results

O objetivo do presente estudo foi investigar os resultados agudos e crônicos dos métodos e protocolos de exercício contínuo moderado - ECM e intermitente de alta intensidade -HIIT como investidas reabilitativas para indivíduos com intercorrências cardiovasculares, principalmente, em indivíduos com alto risco de infarto do miocárdio - IAM e compará-los em função de sua eficácia e segurança. Os estudos analisados proporcionaram resultados agudos semelhantes entre os protocolos HIIT e ECM, principalmente, quando comparados ao principal objetivo, neste caso, preservar a integridade física dos indivíduos praticantes e incrementar sua reserva funcional. Quanto às respostas crônicas, os protocolos de treinamento HIIT apresentaram resultados adaptativos positivos nas funções fisiológicas e morfológicas se mostrando como uma alternativa de grande efetividade para a reabilitação cardíaca, em função de seu baixo volume total de treinamento, podendo ser de grande ajuda se incluído como alternativa de trabalho para reabilitação de patologias e intercorrências cardiovasculares.Palavras-chaves: Reabilitação Cardíaca. Treinamento Intervalado. Cardiopatas.AbstractThe objective of the present study was to investigate the acute and chronic outcomes of the methods and protocols of continuous training (CT) and high intensity interval training (HIIT) as rehabilitative interventions for individuals with cardiovascular events, especially in individuals at high risk of acute myocardial infarction (AMI) and to compare them for their efficacy and safety. The analyzed studies provided similar acute results between the HIIT and ECM protocols, mainly when compared to the main objective, in this case, to preserve the physical integrity of the practicing individuals and to increase their functional reserve. Regarding the chronic responses, the HIIT training protocols presented positive adaptive results in the physiological and morphological functions, showing itself as a highly effective alternative for cardiac rehabilitation due to its low total training volume, and could be of great help if included as a work alternative for the rehabilitation of pathologies and cardiovascular intercurrences.Keywords: Cardiac Rehabilitation. Interval Training. Cardiovascular Diseases.

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