Non-obstructive coronary artery disease is a condition in which symptoms such as chest pain persist even though no significant blockage is seen on coronary angiography. It is also described in the cardiology literature using terms such as INOCA and ANOCA. This page offers general information about the condition and how EECP may be considered alongside other care.
Even without significant blockage in the large coronary arteries, dysfunction in the heart's small vessels can lead to chest pain.
Temporary constriction of the coronary arteries can cause pain even when angiography shows no visible blockage.
Even with a clean angiography result, some patients continue to experience chest pain and limited exercise tolerance.
Non-obstructive CAD is not always easily detected with standard angiography, and additional testing may be needed.
The rhythmic pressure effect created by EECP is intended to support circulation in the small vessels.
It can be an approach the cardiology team considers when angiography is clean but symptoms persist.
It is an outpatient option that does not require incisions or invasive procedures.
Suitability for EECP is determined only after a detailed cardiology examination.
Patients with no significant blockage on angiography whose symptoms continue.
Patients whose chest pain continues despite an appropriate medication regimen.
Patients for whom an invasive procedure is not indicated or not preferred.
Research on EECP specifically for non-obstructive CAD, INOCA, and ANOCA remains limited, and this area continues to be studied. EECP does not guarantee symptom relief or a cure; it is considered, when appropriate, as a complementary option alongside medication, risk-factor management, and regular cardiology follow-up.