Clinical trial Recruiting at 1 site Observational Ages 20 to 80

Examining sex differences in coronary microvascular dysfunction in patients with non-obstructive coronary artery disease

Official title: Sex Difference of Coronary Microvascular Dysfunction Evaluated by Coronary Flow Reserve in Patients With Non-obstructive Coronary Artery Disease

Run by Korea University Anam Hospital · NCT06076551 · Data updated 2026-11-12

This study is trying to see if men and women with chest pain but no major blockages in their heart arteries have different issues with small blood vessels in the heart.

Quick facts

Study typeObservational
Ages20 Years to 80 Years
SexAll
Enrollment300 (estimated)
SponsorKorea University Anam Hospital
Academic / other
Locations1 site (Seoul)
StatusRecruiting
StartedFebruary 1, 2018
Main results expectedDecember 31, 2025
Study endsDecember 31, 2025
Registry record updatedMarch 26, 2025
Trial IDNCT06076551 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include individuals experiencing typical or atypical chest pain with no significant coronary artery stenosis.

Probably not a fit

Patients with moderate valvular heart disease, congenital heart disease, or those with chronic renal failure may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to evaluate the differences in coronary microvascular dysfunction between sexes in patients who experience chest pain but have no significant coronary artery stenosis. Patients will undergo adenosine stress echocardiography to assess coronary microvascular function by measuring coronary blood flow velocities at specified intervals after adenosine infusion. The study focuses on understanding how these differences may impact the management and treatment of microvascular angina.

Why it matters

Potential benefit: If successful, this study could lead to improved diagnosis and treatment strategies for patients suffering from microvascular angina, particularly by considering sex-specific differences.

How similar studies have gone: While there is ongoing research in coronary microvascular dysfunction, this specific focus on sex differences in patients with non-obstructive coronary artery disease is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Typical/atypical chest pain or ischemic symptoms including dyspnea
* No significant coronary artery stenosis (\<50% stenosis) in coronary angiography or computed tomography

Exclusion Criteria:

* ≥ Moderate valvular heart disease
* Congenital heart disease
* Chronic renal failure (estimated glomerular filtration rate \<30 ml/min/1.73m2) or end-stage renal failure undergoing hemodialysis or peritoneal dialysis
* Asthma, chronic obstructive pulmonary disease and primary pulmonary hypertension
* Receiving anticancer drugs
* Vasculitis associated with autoimmune diseases
* Atrioventricular block with more than second degrees, symptomatic bradycardia, cryo-node failure syndrome, Wolff-Parkinson-White (WPW) patients

Where it's running

  • Korea University Anam Hospital
    Seoul, South Korea
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.