New inhaled sedative could change ICU care
NCT ID NCT05327296
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 2 times
Summary
This study tested whether an inhaled anesthetic gas, isoflurane, given through a special device (Sedaconda ACD-S), works as well as the standard IV drug propofol for keeping ICU patients calm while on a breathing machine. The trial included 282 adults expected to need sedation for over 12 hours. Researchers measured how often sedation stayed in the target range and whether opioid use could be reduced.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- isoflurane (inhaled anesthetic gas)
- What this could lead to
- If it works, this could offer a new sedation option for ICU patients on ventilators, potentially reducing opioid use.
- What could go wrong
- This is a completed phase 3 trial, but results may not show a clear advantage over propofol. Risks include side effects like low blood pressure or breathing issues.
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 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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282 people
The number who actually took part.
- Started
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Jun 2022
- Finished
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Nov 2024
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
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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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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: * Adults ≥18 years of age; * Patients who are anticipated to require \>12 hours of invasive mechanical ventilation and continuous sedation in the ICU; and * Receipt of continuous sedation due to clinical need for sedation to RASS \<0. Exclusion Criteria: * Need for RASS -5; * Sedation for invasive mechanical ventilation immediately prior to Baseline for \>72 hours; * Severe neurological condition before ICU admission that causes the patient to lack ability to participate in the study (ie, unable to be assessed for RASS and CPOT); * Ventilator tidal volume \<200 or \>1000 mL at Baseline; * Need for extracorporeal membrane oxygenation (ECMO), extracorporeal CO2 removal (ECCO2R), high frequency oscillation ventilation (HFOV), or high frequency percussive ventilation (HFPV) at Screening; * Comfort care only (end of life care); * Contraindication to propofol or isoflurane; * Known or family history of MH; * Severe hemodynamic compromise, defined as the need for norepinephrine ≥0.3 mcg/kg/min (or equivalent vasopressor dose) to maintain blood pressure within acceptable range, assumed to be mean arterial pressure ≥65 mmHg unless prescribed clinically; * Allergy to isoflurane or propofol, or have propofol infusion syndrome. * History of ventricular tachycardia/Long QT Syndrome; * Requirement of IV benzodiazepine or barbiturate administration for seizures or dependencies, including alcohol withdrawal * Neuromuscular disease that impairs spontaneous ventilation (eg, C5 or higher spinal cord injury, amyotrophic lateral sclerosis, etc); * Concurrent enrollment in another study that, in the Investigator's opinion, would impact the patient's safety or assessments of this study; * Participation in other study involving investigational drug(s) or devices(s) within 30 days prior to Randomization; * Anticipated requirement of treatment with continuous infusion of a neuromuscular blocking agent for \>4 hours; * Female patients who are pregnant or breast-feeding; * Imperative need for continuous active humidification through mechanical ventilation circuit; * Attending physician's refusal to include the patient; or * Inability to obtain informed consent.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Beth Israel Deaconess Medical Center
Boston, Massachusetts, 02215, United States
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Henry Ford Health System
Detroit, Michigan, 48202, United States
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Massachusetts General Hospital
Boston, Massachusetts, 02114, United States
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Memorial Health Services
Long Beach, California, 90807, United States
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Memorial Hermann Health Services
Houston, Texas, 77030, United States
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Ohio State University
Columbus, Ohio, 43210, United States
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Rush University Medical Center
Chicago, Illinois, 60612, United States
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Stanford University
Redwood City, California, 94063, United States
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The Cooper Health System
Camden, New Jersey, 08103, United States
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The New York and Presbyterian Hospital
New York, New York, 10032, United States
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Thomas Jefferson University
Philadelphia, Pennsylvania, 19107, United States
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University of California, Los Angeles
Los Angeles, California, 90095, United States
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University of California, San Diego
San Diego, California, 92023, United States
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University of Miami
Coral Gables, Florida, 33146, United States
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University of Michigan
Ann Arbor, Michigan, 48109, United States
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Virginia Commonwealth University
Richmond, Virginia, 23284, United States
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