Lymphatic Drainage in Patients with Heart Failure: A Feasibility Study

Area of Science:

• Cardiology
• Vascular Biology
• Medical Devices

Background:

• Lymphatic dysfunction causes congestion and organ damage in heart failure (HF).
• Current HF therapies do not directly address lymphatic congestion.
• Thoracic duct (TD) drainage presents a novel therapeutic strategy for lymphatic congestion.

Purpose of the Study:

• To evaluate the safety and feasibility of minimally invasive TD drainage in patients with HF.
• To assess the potential decongestive effects of TD drainage.

Main Methods:

• A multicenter feasibility study involving four patients with New York Heart Association class II-IV HF and fluid overload.
• Fluoroscopy-guided TD access was achieved through cervical, abdominal, or transvenous brachial approaches.
• Lymph was drained by gravity for up to 3 hours, with hemodynamic parameters monitored.

Main Results:

• Successful TD drainage was achieved in all patients, yielding a mean lymph output of 430 mL.
• Significant reductions in hemodynamic pressures were observed: mean right atrial pressure decreased by 4 mmHg, and mean pulmonary capillary wedge pressure decreased by 1.5 mmHg.
• No major adverse events were reported during the procedure.

Conclusions:

• Minimally invasive TD drainage is a feasible and safe procedure for managing fluid overload in HF patients.
• TD drainage demonstrates potential decongestive benefits, warranting further investigation.
• Larger clinical trials are necessary to establish the definitive role of TD drainage in HF management.