CompletedNot Applicable

Inhaled Nitrous Oxide for the Prevention of Emergence Reaction During Ketamine Administration in Adults, a Pilot Study

United States20 participantsStarted 2013-10

Plain-language summary

To describe the safety and efficacy of nitrous oxide during ketamine administration for the prevention of emergence reaction during Emergency Department procedural sedation and analgesia in adults. Drugs such as fentanyl, midazolam, and propofol are widely used in emergency departments for procedural sedation and analgesia because they have a rapid onset and short duration of action. Unfortunately, all of these agents may cause respiratory depression, particularly when combined with other sedative agents, administered in large doses, or given to patients with underlying respiratory diseases. Nitrous oxide use during ketamine administration may be an ideal combination for the prevention of emergence reaction in adults sedated in the ED. Like ketamine, nitrous oxide has an excellent cardio-respiratory profile as well as some analgesic and anxiolytic qualities. The anxiety and pain surrounding procedural sedation is not limited to the procedure itself, but the elapsed time from the time the patient enters the ED to the time spent in preparation for the procedure can be significant and lead to increased anxiety, which may exacerbate emergence reactions in adults. Using nitrous oxide before ketamine administration may mitigate this. While midazolam has shown efficacy in reducing emergence reactions in adults sedated with ketamine, the investigators believe that inhaled nitrous oxide may be equivalent to midazolam, with a better cardio-respiratory profile.

Who can participate

Age range

18 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion criteria: All spontaneously breathing subjects, 18 years of age and older, with an American Society of Anesthesiologists (ASA) Physical Status Classification 1 or 2, who will be receiving sedation for an ED procedure. Written informed consent will be obtained from all subjects. Exclusion criteria: Subjects with underlying conditions that could affect ventilation, perfusion, or metabolism including intubated subjects, subjects with clinical signs of cardiopulmonary instability, major trauma, thoracic trauma, shock, sepsis, psychiatric disorders and ASA class 3, 4, and 5. Also those unable to provide informed consent, nursing home residents, age less than 18 years, non English speaking, pregnant women, subjects under police custody, or physician discretion.

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Emergence Reaction

Timeframe: At primary ED visit when the patient is undergoing the intervention

Trial details

NCT IDNCT02145169

SponsorAlbert Einstein Healthcare Network

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2016-04

Results submitted2020-03-06

View on ClinicalTrials.gov More Emergence Reaction trials