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Microvascular Disease · Patient guide

What is INOCA?

INOCA describes ischemic symptoms or evidence of reduced heart blood flow without a major obstructive coronary blockage.

The short answer

INOCA describes ischemic symptoms or evidence of reduced heart blood flow without a major obstructive coronary blockage.

The meaning of a symptom, test, or diagnosis depends on the person’s history and complete clinical picture. A cardiovascular clinician can determine whether additional evaluation is appropriate.

How PICC approaches the question

PICC begins with the clinical problem, reviews prior information, and selects testing only when it can answer a meaningful question. Care stays connected across prevention, diagnosis, treatment, and follow-up.

Related PICC programCoronary Microvascular Disease & INOCA CenterExplore program →

Questions to bring to your visit

  • What information from my prior tests is most useful?
  • What clinical question would another test answer?
  • How would the result change my care plan?
  • What symptoms should prompt urgent evaluation?
  • How does prevention fit into my next step?

Authoritative starting points

American Heart Association health topics ↗American College of Cardiology CardioSmart ↗FDA medical-device information ↗

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Related patient guides

What is microvascular angina?

Microvascular angina involves dysfunction in the heart’s smallest blood vessels and may require evaluation beyond a standard angiogram.

Why do I have chest pain if my angiogram was normal?

A non-obstructive angiogram does not rule out every cardiac cause of chest pain, including microvascular and vasomotor conditions.

What is coronary vasospasm?

Coronary vasospasm is temporary tightening of a coronary artery that can reduce blood flow and produce symptoms.

Patient education
Use this guide to prepare questions for your cardiovascular care team.

Last updated
August 22, 2026

Educational information only. It does not replace personal medical advice.