Heart surgery gas study pulled before starting

NCT ID NCT04022161

Terminated Knowledge-focused Sponsor: Massachusetts General Hospital Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study was designed to measure how breathing nitric oxide gas affects oxidation levels in the blood of heart surgery patients. It was an add-on to a larger trial and planned to enroll adults having elective heart surgery with a bypass machine. However, the study was withdrawn before any participants were enrolled, so no results are available.

What this could mean

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

Active substance: Nitric Oxide

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Conditions

The condition(s) this trial relates to.

cardiovascular disorder

As listed by the trial registrant

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

CARDIOVASCULAR DISEASES ENDOTHELIAL DYSFUNCTION OXIDATIVE STRESS

Contacts and locations

Locations

MP 825 Southampton General Hospita

Southampton, Hampshire, SO16 6YD, United Kingdom
Massachusetts General Hospital

Boston, Massachusetts, 02114, United States

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