Plain-English translation of NCT05573633 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
Read our Atrial Fibrillation research guide →This study doesn't follow the usual testing phases — it may be an observational study or a different type of research.
After heart surgery, some patients develop an irregular heartbeat called atrial fibrillation, which often happens without any warning symptoms. This trial is testing whether a smartwatch with built-in heart monitoring technology can reliably detect these irregular heartbeats in the days right after surgery, when patients have left intensive care. The goal is to catch these rhythm problems early so doctors can treat them before serious complications develop.
About 30% of heart surgery patients develop irregular heartbeats after surgery, but many don't notice any symptoms—which makes the condition dangerous and easy to miss. Currently, doctors only find these problems when patients show obvious signs or when heart monitoring equipment is available. This trial exists to see if smartwatches could be a simpler, more affordable way to catch these hidden rhythm problems so patients get treated faster.
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If you join this trial, you will be randomly assigned to either wear a smartwatch or not wear one during your first five days on the regular cardiac surgery ward. If you receive a smartwatch, you'll use it to take simple one-lead heart rhythm readings several times a day and wear it continuously so it can monitor your heart rate automatically. Either way, you'll have standard heart checks from your medical team, and researchers will compare how well the smartwatch detects problems compared to traditional monitoring methods.
AI-generated summary from trial data · Jun 19, 2026 · Not medical advice
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