What Is EECP? A Plain-Language Guide to Enhanced External Counterpulsation
EECP stands for Enhanced External Counterpulsation. It's an FDA-cleared, non-invasive cardiovascular therapy that improves circulation by working with your heartbeat — not against it. Here's everything you need to know.
The short version
EECP is a therapy where you lie on a padded table while three sets of cuffs — wrapped around your calves, thighs, and buttocks — inflate and deflate in sync with your heartbeat. The inflation happens during diastole (the resting phase between beats), pushing blood back toward the heart at the exact moment it's filling. The deflation happens just before your next heartbeat, reducing the workload on the heart as it pumps. The result, over a standard 35-hour course, is improved circulation, new collateral blood vessel formation, and measurable improvements in cardiovascular function.
How it actually works — the mechanism
The mechanism of EECP is called diastolic augmentation. When the cuffs inflate in sequence — calf, thigh, buttocks — they create a pressure wave that travels back toward the heart. This wave arrives during diastole, when the coronary arteries are most open and receptive to blood flow. The result is increased coronary perfusion pressure — more blood reaching the heart muscle at the moment it's most able to receive it.
EECP works by increasing diastolic pressure (blood flow to the heart) while simultaneously reducing systolic pressure (the workload on the heart). This combination — more supply, less demand — is the same goal as most cardiovascular drugs, achieved mechanically instead of chemically.
What EECP is FDA-cleared for
EECP has FDA 510(k) clearance for the treatment of stable and unstable angina pectoris, congestive heart failure, acute myocardial infarction, and cardiogenic shock. The Renew NCP-5 — the system used by Atlantic EECP — also carries FDA clearance for improving VO₂ max in healthy patients, making it the only ECP system cleared for use in people without a cardiac diagnosis.
What the clinical evidence shows
EECP has been studied in multiple randomized controlled trials. The MUST-EECP trial — the landmark study — demonstrated significant reductions in angina frequency and improvements in exercise tolerance in patients with chronic stable angina. The PEECH trial showed improvements in exercise duration and quality of life in patients with heart failure. Observational studies have documented benefits in long COVID, cognitive decline, peripheral artery disease, and erectile dysfunction.
- →MUST-EECP (1999): Significant reduction in angina episodes and improved exercise tolerance vs. sham treatment
- →PEECH trial (2006): Improved exercise duration and NYHA functional class in heart failure patients
- →Multiple observational studies: Benefits in long COVID, vascular dementia, PAD, and ED
- →Medicare National Coverage Determination 20.20: Covers EECP for chronic stable angina
Who is EECP for?
EECP was originally developed for patients with chronic stable angina who were not candidates for revascularization — stenting or bypass surgery. That remains its strongest indication. But the clinical evidence has expanded significantly. Today, EECP is used for heart failure, post-cardiac intervention recovery, long COVID, cognitive decline, peripheral artery disease, diabetic neuropathy, and cardiovascular optimization in healthy patients.
Who should not do EECP?
EECP is contraindicated in patients with decompensated heart failure, significant aortic regurgitation, aortic aneurysm, active deep vein thrombosis, active phlebitis, uncontrolled severe hypertension, and certain bleeding disorders. Patients with atrial fibrillation with rapid ventricular response, recent MI (less than 4 weeks), or recent revascularization (less than 4–6 weeks) require case-by-case evaluation.
What a course of EECP looks like
A standard EECP course is 35 one-hour sessions. The traditional protocol is one session per day, five days per week, for seven weeks. Atlantic EECP also offers a two-a-day protocol — two sessions per day, every day — which completes the full 35-hour course in under three weeks. Sessions are non-invasive, require no sedation, and have no recovery period. Most patients read, watch television, or sleep during treatment.
The bottom line
EECP is one of the most evidence-backed non-invasive cardiovascular therapies available — and one of the least known. It has been called 'the most underutilized therapy in medicine' by clinicians who have studied it. For patients who are not candidates for surgery, who have failed other treatments, or who are looking for a non-pharmacological approach to cardiovascular health, EECP deserves serious consideration.
Medical disclaimer: This article is for informational purposes only and does not constitute medical advice. EECP therapy should be considered in consultation with a qualified healthcare provider who can evaluate your individual clinical situation. Atlantic EECP does not provide diagnosis or treatment recommendations without a clinical evaluation.
Jack Clifford's definitive patient guide — the science, the history, the politics, and the practical reality of EECP. The book I wish I'd had in that hospital bed.