Physical activity and heart failure: a forgotten indicator

Abstract Introduction Low physical activity may be associated with comorbidities, sedentary lifestyle or clinical worsening in heart failure (HF) patients. Cardiovascular implantable electronic devices (CIEDs) detect and analyse data that is often integrated multifactorial algorithms for predicting HF decompensations, but its potential probably underestimated. Purpose We hypothesized low physical-activity levels, obtained from remote monitoring of CIEDs, help predict outcomes patients, independently algorithms. Methods retrospectively evaluated consecutive patients CIEDs through assessments (two systems were used). was defined as <1 hour/day two groups defined: alerts (group 1) without 2). Primary outcome death by all causes secondary hospitalizations sustained ventricular tachycardia (VT) fibrillation (VF) episodes. Results From 121 RPM, 104 (85,9%). Mean age 63,98±12,44 years, 70,2% males follow-up 59,19±38,491 months. Fifty-four (51,9%) had cardiac resynchronization therapy (CRT) defibrillator (CRT-D), 46 (44,2%) transvenous cardioverter (ICD), 4 (3,8%) CRT pacemaker (CRT-P). The aetiology idiopathic 42,5% ischemic 40,2%. left ejection fraction 34,08±11,40% mean duration 2,25±1,84 hours/day. Forty-eight (53,7%) 56 (46,3%) no In group 1 period 52,978±15,75 days/year. Patients older (p=0,001), more oncological disease (p=0,041) peripheral artery (p=0,028). Three deaths occurred total, (p=0,039) frequent (1,68±2,59 vs 0,69±1,32, p=0,005). burden also atrial (r=0,473, p<0,05) number episodes VT VF (r=0,267, p=0,007). A decrease 50% activity, above hour/day, increase (1,83±2,13 1,05±1,95, p=0,006). Conclusion hospitalizations, arrhythmic events causes, basal even alert threshold, an earlier sign decompensations. Funding Acknowledgement Type funding sources: None.