Plain-English translation of NCT06566196 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
This study doesn't follow the usual testing phases — it may be an observational study or a different type of research.
This study is designed for people with congenital heart disease (a heart condition present from birth) who are already scheduled for a cardiac catheterization—a procedure where a thin tube is placed into blood vessels to measure how the heart is working. The researchers want to compare what they learn about your heart function when you're resting versus when you're exercising, and they'll also compare those measurements to other, non-invasive imaging tests you may have had.
Some heart problems in people with congenital heart disease only show up when the heart is working hard (during exercise), not when you're at rest. This study aims to understand whether measuring heart function during exercise gives doctors better information to detect problems and guide treatment decisions.
You likely qualify if…
You likely don't qualify if…
If you qualify, you will likely undergo a cardiac catheterization procedure as you normally would, but the research team will also measure your heart function while you exercise (such as on a stationary bike). They will compare the measurements taken while you're at rest with those taken during exercise, and may compare them to other heart imaging tests you've already had. The study is observational, meaning the researchers are watching and measuring—not giving you a new medication or treatment.
AI-generated summary from trial data · Jul 4, 2026 · Not medical advice
United States
Mayo Clinic
Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
Enrollment target
~200 participants
Started
February 2025
Primary completion
December 2026
Age range
18 Years and older
Last updated on clinicaltrials.gov in March 2026.
Reach out to the team running this trial. Response times vary — some teams are faster than others.
Central contact
ACHD Research Program
Mayo Clinic
Tell us you're interested and we'll help connect you with the research team. We'll walk you through what to expect first — no email needed to get started.