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Which heart procedure spares tiny vessels? study compares two Calcium-Busting techniques

NCT ID NCT07699965

Ongoing Knowledge-focused Sponsor: Second Affiliated Hospital, School of Medicine, Zhejiang University Source: ClinicalTrials.gov ↗

First seen Jul 13, 2026 · Last updated Jul 14, 2026 · Updated 1 time

Summary

This study compares two procedures—rotational atherectomy and intravascular lithotripsy—used to treat severe calcium deposits in heart arteries. The goal is to see how each technique affects the tiny blood vessels (microcirculation) of the heart and whether one leads to better long-term outcomes. Researchers will follow about 590 patients for one year after their procedure, tracking heart-related events like heart attack or need for repeat treatment.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to
If one procedure is found to better protect tiny heart blood vessels, it could guide doctors to choose the safer technique for patients with severe calcium buildup.
What could go wrong
This is an observational study, not a randomized trial, so results may be influenced by other factors. It also only follows patients for one year.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

coronary atherosclerosis coronary microvascular disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CORONARY ARTERY CALCIFICATION CORONARY MICROCIRCULATION DYSFUNCTION INTRAVASCULAR LITHOTRIPSY

Contacts and locations

Locations

  • The Second Affiliated Hospital of Zhejiang University School of Medicine 88 Jiefang Road

    Hangzhou, Zhejiang, 310009, China

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