This is a monocentric cohort study, with retrospective data collection and prospective semi-structured interviews. All patients who, since 2020, have received telemonitoring for heart failure after hospitalization at the CHR Metz-Thionville will be included. Patients will be informed of the study by e-mail, or by post if no e-mail is available. Data concerning their socio-demographic and clinical characteristics will be collected from the computerized patient record, and telerecording data will be extracted from the telerecording software. Patients whose follow-up is still in progress will be monitored (=simple data collection) for 12 months, or until follow-up is terminated if necessary. Patients whose follow-up has been interrupted for less than a month at the start of the study (to avoid memory bias) or during the course of the study will be contacted by telephone by the IPA carrying out the telemonitoring, and offered, after oral consent, a semi-structured interview to investigate the reasons for the interruption.