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NON-OBSTRUCTIVE CAD

Coronary Artery Disease Without Blockage (Non-Obstructive CAD)

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.

How Non-Obstructive CAD Can Occur

Microvascular Dysfunction

Even without significant blockage in the large coronary arteries, dysfunction in the heart's small vessels can lead to chest pain.

Coronary Vasospasm

Temporary constriction of the coronary arteries can cause pain even when angiography shows no visible blockage.

Persistent Chest Pain

Even with a clean angiography result, some patients continue to experience chest pain and limited exercise tolerance.

Diagnostic Difficulty

Non-obstructive CAD is not always easily detected with standard angiography, and additional testing may be needed.

How EECP Is Considered in Non-Obstructive CAD

Aims to Support the Microcirculation

The rhythmic pressure effect created by EECP is intended to support circulation in the small vessels.

May Be Considered for Persistent Symptoms

It can be an approach the cardiology team considers when angiography is clean but symptoms persist.

A Non-Surgical Method

It is an outpatient option that does not require incisions or invasive procedures.

Planned Through Cardiology Evaluation

Suitability for EECP is determined only after a detailed cardiology examination.

Who Might Consider an EECP Evaluation

Clean Angiography, Persistent Symptoms

Patients with no significant blockage on angiography whose symptoms continue.

Symptoms Despite Medication

Patients whose chest pain continues despite an appropriate medication regimen.

Surgery Not an Option or Not Required

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.

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