Carmelo La Greca , Andrea Dell’Aquila , Amedeo Prezioso , Matteo Bertini , Valter Bianchi , Gennaro Vitulano , Leonardo Calò , Gianluca Savarese , Vincenzo Ezio Santobuono , Antonio Dello Russo , Miguel Viscusi , Amato Santoro , Raimondo Calvanese , Antonio Pangallo , Claudia Amellone , Giuseppe Arena , Monica Campari , Sergio Valsecchi , Giuseppe Boriani , Domenico Pecora
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引用次数: 0
Abstract
Aims
The HEAD2TOES schema was introduced to identify modifiable risk factors (RF) for atrial fibrillation (AF), including heart failure (HF), physical inactivity (PA), and sleep apnea (SA). Modern implantable cardioverter-defibrillators (ICDs) can detect SA, assess HF status, and measure daily PA. This study investigates the relationship between atrial high-rate episodes (AHREs) and ICD-detected surrogates for these RF in HF patients.
Methods and results
Data were collected from 411 HF patients with ICDs. The HeartLogic Index measured HF status, Respiratory Disturbance Index (RDI) severe SA (≥30episodes/hour), and accelerometer detected reduced PA (≥1 h/day). Endpoints were daily AHRE burdens ≥ 5 min and ≥ 23 h. Over 26 months of median follow-up, IN-alert-HF state was 13 % of the total observation time, RDI ≥ 30 episodes/h occurred 58 % of time, and 2 % of weekly activity values were ≥ 1 h lower than usual. AHRE burden ≥ 5 min/day occurred in 139 (34 %) patients and ≥ 23 h/day in 68 (17 %). Both IN-alert-state and reduced activity were independently associated with AHRE burden (≥5 min/day and ≥ 23 h/day), while RDI ≥ 30episodes/hour was associated only with AHRE ≥ 5 min/day. We defined a score predicting AHRE burden ≥ 5 min (2*HeartLogic_IN-alert + 1*RDI ≥ 30episodes/hour + 4*Reduction_in_activity ≥ 1 h), and a score predicting AHRE burden ≥ 23 h (1*HeartLogic_IN-alert + 2*Reduction_in_activity ≥ 1 h). Lower score levels (AHRE-5 min < 4 and AHRE-23 h < 2) comprised the largest proportion of follow-up duration (98 %), with higher scores linked to higher incidence rate ratios for AHRE (6.75 [95 %CI:1.88–20.16] and 11.46 [95 %CI:3.34–31.72], respectively).
Conclusions
In HF patients, AHRE occurrence is independently associated with ICD-detected HF status, severe SA, and decreased PA. These ICD-indexes might serve as surrogates for HEAD2TOES RF, aiding in continuous AF risk assessment.
期刊介绍:
IJC Heart & Vasculature is an online-only, open-access journal dedicated to publishing original articles and reviews (also Editorials and Letters to the Editor) which report on structural and functional cardiovascular pathology, with an emphasis on imaging and disease pathophysiology. Articles must be authentic, educational, clinically relevant, and original in their content and scientific approach. IJC Heart & Vasculature requires the highest standards of scientific integrity in order to promote reliable, reproducible and verifiable research findings. All authors are advised to consult the Principles of Ethical Publishing in the International Journal of Cardiology before submitting a manuscript. Submission of a manuscript to this journal gives the publisher the right to publish that paper if it is accepted. Manuscripts may be edited to improve clarity and expression.