Heart Failure，Congestive

The goal of this observational study is to explore the potential of implementing a telemedicine-based cross-sector collaboration model to manage patients with frequent admissions with decompensated heart failure. The main question(s) it aims to answer are: * Characterization of conditions that make these patients vulnerable * Description of key-elements that makes possible to manage the patients with the cardio-share model Participants are: * Patients - will be helped to use the available telemedicine tools * General Practitioners - will be offered teleconferences with cardiologists (chat and video) on demand * Community health workers (caregivers at the patient home or in elderly home) - will be guided to assist the patients to use the available telemedicine tools Researchers will compare readmission rates (primary outcome) and quality of life of patients where the cardio-share management model is successfully implemented one year before and after the implementation.

In this monocentric observational study the research question is to what extent data collected via Apple Watch can predict the heart failure status of decompensated HF patients. For this purpose, physiological data from the Apple Watch (such as single-lead electrocardiogram, SpO2, respiratory rate, step count, nighttime temperature, etc.) will be extracted and used as predictor variables to forecast outcomes like risk of decompensation and rehospitalization within the follow-up period. Since this is a data-driven study, additional data collected as part of guideline-compliant treatment will also be included.

Congestive heart failure (CHF) occurs when the heart is weak and not able to effectively pump blood to the body. One of the common manifestations of CHF is fluid overload and swelling of the legs. Diuretics or "water pills" are usually the treatment for fluid overload and leg swelling; however, in some patients' diuretics are no longer effective or the effectiveness is limited due to poor kidney function. The presence of chronic swelling of the legs could potentially damage the veins; additionally, it could lead to chronic skin changes in the legs and in the worst cases to a leg ulcer. Compression stockings are used in patients with venous diseases to reduce the swelling of the legs and improve mobility and quality of life. Although, there is a theoretical risk that compression stockings might push the fluid of the legs back to the heart and lungs worsening the CHF. The purpose of this study is to determine whether the use of knee-high tight socks (tight stockings with strong compression) vs. knee-high soft socks (soft stockings with minimum compression) are effective in preventing swelling and skin changes and safe in patients with CHF. During the first visit (in-person) a routine medical test will be performed including blood tests, review of the medication doses, current weight, an ultrasound images of the veins, (venous reflux ultrasound), questions about health status and a brief physical exam. The participants will be randomly assigned to receive tight compression vs. soft compression socks. Participants will be asked to wear the socks at least 8 hours a day for 5 days a week. There will be a total of 3 virtual visit (by video or telephone); the first one after one week, then after one month and two months. During the virtual visit participants will be asked about symptoms, current medications and doses, and current weight. The participants are expected to return to the clinic after 3 months for a second in-person visit. During this visit the investigators will ask questions about participant's health, they will perform a brief physical exam of their legs, and check participants weight and medicines; also, a venous ultrasound of the legs, questions about health status will be performed. The duration of the study is 3 months.

The goal of this observational study is to evaluate the clinical characteristics of patients undergoing permanent cardiac pacing and to compare procedural efficacy and safety of different implantation approaches in the clinical practice of the participating centres. The contribution of non-fluoroscopic anatomical and electrophysiological reconstruction systems to device implantation procedures will also be evaluated. Participants \[patients over 18 years old with an indication to receive a definitive pacemaker/intracardiac defibrillator implant\] will receive a permanent cardiac pacing implant as requested according to European Society of Cardiology (ESC) guidelines; the investigators will evaluate procedural efficacy and safety of different implantation approaches.