Spot Worsening Heart Failure Two Weeks Early With AI.

A 2025 study backed by the National Institute for Health and Care Research found that a new at-home foot scanner from Heartfelt Technologies could detect fluid build-up—an early sign of heart failure—an average of 13 days before a patient needed hospital care. It accurately predicted 5 of 6 hospitalizations.

The scanner uses AI to monitor foot swelling daily and sends alerts to clinicians when abnormalities are detected. Patients used it consistently, with 90% willing to continue long-term.

Researchers believe this tool could reduce emergency hospital visits, cut healthcare costs, and ultimately save lives by catching heart failure early—before symptoms become severe.