Inhaled drug combo aims to ease Heart-Lung bypass weaning
NCT ID NCT05450328
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether giving two inhaled drugs (milrinone and epoprostenol) before heart-lung bypass can prevent difficult separation from the machine. About 141 adults having heart surgery will be randomly assigned to receive the drug combo or a placebo. The goal is to see if the treatment reduces the need for extra heart support after bypass.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- inhaled milrinone and epoprostenol
- What this could lead to
- If successful, this could provide a safer way to manage pulmonary hypertension and right heart failure during heart surgery, reducing complications.
- What could go wrong
- This is a phase 2 trial with only 141 participants, so results are preliminary. The drugs are not yet approved by Health Canada for this use, and side effects or lack of benefit are possible.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 141 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2025
- Expected to finish
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Dec 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: \- Only patients undergoing cardiac surgery with CPB and aged 18 years and older will be included in this study. Exclusion Criteria: * The presence of congenital cardiomyopathy, which the correction is the primary objective of the proposed surgery. For example, a patient who requires surgery for atrial septal defect closure only would not be eligible for the study. On the other hand, a patient who undergoes this same surgery in addition to a valve replacement, for example, would be eligible to participate in the study. * Heart transplant or ventricular assist device surgery * Urgent surgery including hemodynamic instability requiring vasopressor agents upon arrival in the operating room * A contraindication to transesophageal ultrasound monitoring or the presence of an unstable cervical spine. * Presence of a contraindication related to Epoprostenol or Milrinone administration such as a documented left ventricular or right ventricular outflow tract obstruction, a severe unaddressed aortic stenosis, or a documented allergy to either of these two molecules.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Montreal Heart Institute
RECRUITINGMontreal, Quebec, H1T 1C8, Canada
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