Physician-Directed Patient Self-Management Using an Implantable IVC Congestion Sensor: Insights From FUTURE-HFII.

Area of Science:

• Cardiology
• Biomedical Engineering
• Digital Health

Background:

• Traditional heart failure (HF) hospitalization prevention strategies using symptoms and weight have limited effectiveness due to delayed and nonspecific signals.
• Ambulatory congestion monitoring offers a potential solution for safe and actionable HF self-management.

Purpose of the Study:

• To evaluate the safety and feasibility of physician-directed patient self-management using an implantable inferior vena cava (IVC) sensor for HF congestion.
• To assess clinical signals and intervention effectiveness associated with this novel self-management approach.

Main Methods:

• A comparison of two prospective cohorts in the FUTURE-HFII study: clinician-managed care (n=15) and physician-directed patient self-management (n=10) using an IVC-based congestion management system.
• The self-management group received smartphone delivery of physician-developed care plans, enabling signal-driven interventions.

Main Results:

• High daily device usage was observed in both groups, with numerically greater adherence in the self-management cohort (90.5% vs 84.8%).
• No safety concerns were identified. The self-management group showed a higher frequency of signal-driven interventions (3.71 RR; P < 0.01) and directionally fewer HF events (0.30 RR).
• Quality of life scores improved in both groups, with significantly larger gains in the self-management cohort (60.0% vs 46.7%).

Conclusions:

• Physician-directed patient self-management with ambulatory IVC-based congestion monitoring is feasible and safe.
• This strategy leads to increased signal-driven interventions and demonstrates favorable clinical outcomes, including improved quality of life.
• Further evaluation in a randomized trial is warranted to confirm the benefits of congestion-based self-management strategies for heart failure.