Enhanced External Counterpulsation (EECP): How It Works, Who It Helps, and What to Expect
Written and medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026 · How we review
Quick Answer: What is EECP?
Enhanced external counterpulsation (EECP) is a noninvasive outpatient therapy for chronic stable angina that no longer responds to other treatments. Pressure cuffs on the legs and buttocks inflate and deflate in sync with the heartbeat to improve blood flow to the heart. A standard course is about 35 one-hour sessions over seven weeks. [1]
What the research says
EECP reduced angina in a randomized trial. In 139 outpatients with coronary artery disease, 35 hours of active EECP lengthened the time to exercise-induced ischemia (p = 0.01) and led to fewer angina episodes than sham treatment; exercise duration and nitroglycerin use did not differ significantly between groups. (Arora et al., J Am Coll Cardiol, 1999) [2]
Most patients improved by at least one angina class. A meta-analysis of 18 studies found that 85% of people treated with EECP improved by at least one Canadian Cardiovascular Society angina class (95% CI 81–88%). (Zhang et al., Medicine (Baltimore), 2015) [3]
People with heart failure exercised longer. In a randomized trial of 187 people with mild-to-moderate heart failure, 35% of the EECP group vs 25% of controls increased exercise time by at least 60 seconds at 6 months (p = 0.016), with no change in peak oxygen uptake. (Feldman et al., J Am Coll Cardiol, 2006) [4]
Key takeaways
EECP is an FDA-approved, noninvasive treatment for chronic stable angina that hasn't improved with other treatments. [1]
Cuffs on the calves, thighs and buttocks squeeze in rhythm with your heartbeat to send more blood to the heart. [1]
A typical course is 35 hours: one hour a day, five days a week, for seven weeks. [1]
Side effects are usually minor, such as tiredness, muscle aches and skin irritation. [1]
EECP does not treat unstable angina. Sudden chest pain, even at rest, is an emergency. [1]
What is enhanced external counterpulsation (EECP)?
Enhanced external counterpulsation (EECP) is an FDA-approved, noninvasive outpatient therapy for chronic stable angina that does not respond to other treatments. [1]
Angina is chest pain or discomfort that comes and goes with activity or stress. It happens when not enough oxygen-rich blood reaches the heart muscle. [1]
EECP may also be recommended for some people who need a procedure to restore blood flow but are not eligible for surgery. [1]
How does EECP improve blood flow to the heart?
EECP improves blood flow to the heart by squeezing the legs and buttocks with pressure cuffs timed to your heartbeat. [1]
The cuffs inflate while the heart relaxes between beats, pushing blood from the legs back toward the heart. [5]
This raises pressure in the main artery while the heart rests and boosts blood flow through the coronary arteries. [5]
The cuffs then deflate before the next beat, and the cycle repeats with every heartbeat. [1]
Over a full course, EECP may encourage new pathways of small blood vessels to form around blocked coronary arteries. These are sometimes called "natural bypass" vessels. [1]
What conditions can EECP treat?
EECP is mainly used for long-term stable angina, and it may also help some related symptoms and conditions. [1]
Category | Examples |
Main use | Chronic stable angina that no longer responds to treatment |
Symptoms it may ease | Chest pain, cough, fatigue, shortness of breath |
Other conditions it may help | Cardiac syndrome X, cerebrovascular disease, heart failure, kidney failure, left ventricular dysfunction, lung disease, peripheral artery disease |
Not treated by EECP | Unstable angina (acute coronary syndrome) |
Source: [1]
Who is a good candidate for EECP?
A good candidate for EECP has long-term angina that comes on with effort or stress and no longer responds to medicine. [1]
You may be a candidate if you:
Have chronic angina triggered by exertion or stress. [1]
Still have symptoms despite medication. [1]
Are not a candidate for invasive procedures such as surgery. [1]
Have symptoms that came back after bypass surgery, angioplasty or a stent. [1]
Who should not have EECP?
EECP is not recommended during pregnancy, and people with certain heart, blood vessel or rhythm conditions may be offered other options instead. [1]
Situation | What it means for EECP |
Pregnancy | Not recommended |
Pacemaker | Other options may be considered |
Other options may be considered | |
Blood clots | Other options may be considered |
Other options may be considered | |
Hypertrophic cardiomyopathy | Other options may be considered |
Other options may be considered | |
Severe peripheral vascular disease | Other options may be considered |
Source: [1]
What happens during an EECP session?
An EECP session is a one-hour outpatient visit where you rest on a padded table while cuffs on your legs and buttocks inflate and deflate with your heartbeat. [1]
Before your first session
Your provider does a physical exam and an exercise stress test. [1]
EKG patches go on your chest to track your heartbeat. [1]
Cuffs are wrapped around your calves, thighs and buttocks. [1]
A small sensor is clipped to your finger. [1]
During the session
You lie on a padded table and rest. [1]
The cuffs inflate and deflate in time with your heartbeat. [1]
You feel strong squeezing, but the treatment should not be painful. [1]
How long does an EECP treatment course take?
A standard EECP course takes about 35 hours, given as one-hour sessions five days a week for seven weeks. [1]
Schedule | Sessions | Total length |
Standard | 1 hour a day, 5 days a week | 7 weeks (about 35 hours) |
Faster option | 2 sessions a day | About 3½ weeks |
Repeat course | Needed by about 20% of people | Often linked to not finishing the first course |
Source: [1]
What are the risks and side effects of EECP?
EECP complications are usually minor, and serious problems are rare. [1]
Type | What to watch for |
Common | Fatigue, muscle aches, muscle or joint discomfort |
Skin | Blisters, irritation, bruises, pressure sores |
Circulation and nerves | Swelling, numbness or tingling |
Rare | Shortness of breath that may need a hospital stay |
Source: [1]
Tell your care team right away if you notice skin breakdown, new swelling or breathing trouble during the course.
What is recovery like after EECP?
Recovery after EECP is quick: you do not need a hospital stay and can return to your normal routine right after each session. [1]
Some people feel tired for several days. [1]
Talk to your provider before starting new exercise, sports or sexual activity during treatment. [1]
A cardiac rehab program may be part of your wider heart care plan; ask your cardiologist how the two fit together.
What results can you expect from EECP?
Most people notice the benefits of EECP in the final weeks of the treatment course, not right away. [1]
Many people report:
Fewer angina symptoms. [1]
More energy. [1]
Better exercise tolerance. [1]
Less need for medication. [1]
These benefits often last for several years. [1]
When should you see a doctor about angina?
You should see a doctor if you have chest pain that keeps coming back with effort or stress. [1]
Call emergency services right away if you have sudden, unexpected chest pain, even at rest. It could be a heart attack. [1]
EECP at a glance
Question | Answer |
What it is | Noninvasive, FDA-approved outpatient therapy |
Main use | Chronic stable angina not helped by other treatments |
How it works | Leg and buttock cuffs inflate in sync with the heartbeat |
Course length | About 35 hours over 7 weeks |
Pain | Should not be painful |
Hospital stay | None |
Main side effects | Fatigue, muscle aches, skin irritation, bruising |
Not for | Unstable angina, pregnancy |
Source: [1]
Conclusion
EECP gives people with long-term angina a noninvasive option when medicine, stents or surgery haven't brought enough relief. The treatment takes commitment: about 35 hours over seven weeks. In return, many people report fewer symptoms, more energy and better exercise tolerance that can last for years.
It isn't right for everyone. Pregnancy, certain rhythm or valve problems and some blood vessel conditions may point to another treatment. And EECP never replaces emergency care for sudden chest pain.
Next step: Save or print this guide and bring it to your next cardiology appointment. Ask your doctor whether EECP fits your angina, your other conditions and your schedule. To understand the bigger picture, read our Angina guide, our Coronary Artery Disease guide and our Heart Health guide.
FAQ
What is EECP therapy?
EECP therapy is a noninvasive outpatient treatment for chronic stable angina that does not respond to other treatments. Cuffs on the legs and buttocks inflate and deflate with your heartbeat to improve blood flow to the heart.
Is EECP painful?
EECP should not be painful. You rest on a padded table while the cuffs squeeze firmly in rhythm with your heartbeat.
How many EECP sessions do you need?
A standard course is about 35 one-hour sessions, given five days a week for seven weeks. A faster option uses two sessions a day for about three and a half weeks.
Who should not have EECP?
EECP is not recommended during pregnancy. People with a pacemaker, atrial fibrillation, blood clots, heart valve disease, hypertrophic cardiomyopathy, pulmonary hypertension or severe peripheral vascular disease may be offered other options.
What are the side effects of EECP?
The most common side effects are fatigue, muscle aches, skin blisters or irritation, bruising, swelling, and numbness or tingling. Rarely, shortness of breath may need a hospital stay.
How long do EECP results last?
Many people report benefits that last several years, including fewer symptoms, more energy, better exercise tolerance and less medication use. Improvement often shows up in the final weeks of the course.
Can EECP treat unstable angina or a heart attack?
No. EECP cannot treat unstable angina (acute coronary syndrome). Sudden chest pain, even at rest, needs emergency care right away.
References
Cleveland Clinic. Enhanced External Counterpulsation (EECP). Cleveland Clinic Health Library. Medically reviewed 17 March 2022. https://my.clevelandclinic.org/health/treatments/16949-enhanced-external-counterpulsation-eecp
Arora RR, Chou TM, Jain D, et al. The multicenter study of enhanced external counterpulsation (MUST-EECP): effect of EECP on exercise-induced myocardial ischemia and anginal episodes. J Am Coll Cardiol. 1999;33(7):1833-1840. PMID: 10362181. https://doi.org/10.1016/s0735-1097(99)00140-0
Zhang C, Liu X, Wang X, et al. Efficacy of enhanced external counterpulsation in patients with chronic refractory angina on Canadian Cardiovascular Society (CCS) angina class: an updated meta-analysis. Medicine (Baltimore). 2015;94(47):e2002. PMID: 26632696. https://doi.org/10.1097/MD.0000000000002002
Feldman AM, Silver MA, Francis GS, et al. Enhanced external counterpulsation improves exercise tolerance in patients with chronic heart failure. J Am Coll Cardiol. 2006;48(6):1198-1205. PMID: 16979005. https://doi.org/10.1016/j.jacc.2005.10.079
Sharma U, Ramsey HK, Tak T. The role of enhanced external counter pulsation therapy in clinical practice. Clin Med Res. 2013;11(4):226-232. PMID: 24510321. https://doi.org/10.3121/cmr.2013.1169
Medical disclaimer
This article is for general education only and does not replace advice from your doctor. Always talk to a qualified healthcare provider about your symptoms and treatment options. If you have sudden chest pain, call your local emergency number right away.
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