Enhanced external counterpulsation improves exercise tolerance in patients with chronic heart failure

Area of Science:

• Cardiology
• Heart Failure Management
• Non-invasive Therapies

Background:

• Enhanced external counterpulsation (EECP) has shown efficacy in improving angina and exercise tolerance in coronary artery disease.
• Previous studies, including a pilot study and registry analysis, suggested potential benefits of EECP for heart failure (HF) patients.

Purpose of the Study:

• To evaluate the effectiveness of enhanced external counterpulsation (EECP) in treating patients with mild-to-moderate heart failure (HF).
• To assess EECP's impact on exercise duration, peak oxygen uptake (VO2), and quality of life in HF patients.

Main Methods:

• A randomized, single-blinded study involving 187 patients with mild-to-moderate HF symptoms.
• Participants were assigned to either EECP plus pharmacologic therapy (PT) or PT alone.
• Co-primary endpoints included increased exercise duration (≥60s) and peak VO2 (≥1.25 ml/min/kg) at 6 months.

Main Results:

• 35% of patients receiving EECP showed a ≥60s increase in exercise time versus 25% in the control group (p=0.016).
• No significant difference in peak VO2 changes was observed between groups.
• Improvements in New York Heart Association (NYHA) functional class and Minnesota Living with Heart Failure scores were noted in the EECP group.

Conclusions:

• EECP significantly improved exercise tolerance and quality of life in patients with mild-to-moderate heart failure.
• The benefits were observed in functional classification and symptom scores, without a concurrent increase in peak VO2.
• EECP represents a viable non-pharmacologic treatment option for select heart failure patients.