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AnesthesiaPhase 1NCT05619627

Oral Dexmedetomidine in Pediatric MRI

A Phase 1 study testing Dexmedetomidine in people with Anesthesia, run by Soroush Merchant at 1 site in United States.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

The objective of this preliminary study is to assess the utility of oral dexmedetomidine as the sole sedative agent in pediatric population undergoing MRI. Read more about this study

Who is it for?
Ages 3 to 6 yearsHealthy volunteers can take part
Conditions the study is for
Anesthesia
What is being tested?
Dexmedetomidine
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
18 participants
Where
1 siteUnited States
Study dates
1 Nov 2026to Mar 2028
Phase
Phase 1
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 3 to 6 years
  • All sexes
  • Healthy volunteers accepted
  • Child

Who may be able to join

  • Participants 3-6 years old, male and female, all races and ethnicities
  • Requiring a clinically indicated MRI with general anesthesia

Who cannot join

  • Refusal to take oral dexmedetomidine
  • Known allergy to dexmedetomidine
  • Inability to take dexmedetomidine at least 90 minutes prior to start of the MRI
  • Medical contraindications to administration of dexmedetomidine including:
  • Unstable cardiac status including life threatening arrhythmias, abnormal cardiac anatomy, significant cardiac dysfunction
  • Current use of digoxin
Show all 17Show fewer
  • Moya Moya disease
  • New onset stroke
  • American Society of Anesthesiologists (ASA) physical status classification > II
  • Contraindications to administering sedation including:
  • Active and uncontrolled gastroesophageal reflux
  • Active and uncontrolled vomiting
  • Current or recent history of apnea
  • Active respiratory disease including pneumonia, bronchitis, respiratory syncytial virus infection, asthma exacerbation
  • Craniofacial anomalies
  • Inability to have MRI scans
  • Non-English speaking volunteers

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Soroush Merchant, MD, MS contact

816-3018595

smerchant@cmh.edu

Kelsye Howell, MSN, RN contact

816-760-5919

klhowell@cmh.edu

United States1 site
  • Children's Mercy Hospital

    Kansas City, Missouri, 64108

    Soroush Merchant, MD, MS, 816-301-8595, smerchant@cmh.edu

    Soroush Merchant, MD, MS

Other trials in United States

About this study

Official title: Utility of Oral Dexmedetomidine as the Sole Sedative Agent in Pediatric Population Undergoing MRI

The objective of this preliminary study is to assess the utility of oral dexmedetomidine as the sole sedative agent in pediatric population undergoing MRI.

Read the detailed description

MRI is an important and robust medical imaging technique that has become the cornerstone for radiologic studies. Superior image quality and resolution especially for soft tissue imaging, without the use of ionizing radiation, has made MRI a dominant imaging modality in pediatrics. Despite its many advantages, MRI is not child friendly. Lengthy scan times, the need for lying motionless in a confined space, excessive noise and vibration during image acquisition, are all factors that have made anesthesia an integral part of pediatric MRI.

General anesthesia is a state of medically induced unconsciousness, analgesia and muscle relaxation which is required for most invasive medical procedures. Despite being painless, MRI scans are highly susceptible to motion artifact and require a state of immobility that may not be obtainable in awake uncooperative children. While very safe, general anesthesia carries potential risk of serious morbidity and mortality secondary to aspiration during instrumentation of the airway, hypoxia and hypoventilation secondary to laryngospasm/bronchospasm and hemodynamic instability. Therefore, sedation may be an appropriate technique to offer anxiolysis, amnesia and immobility while maintaining airway reflexes with limited impact on ventilation and hemodynamics for non-stimulating procedures such as imaging. Aside from having a more favorable risk/benefit profile as compared to general anesthesia when it comes to radiologic studies, sedation is also less costly and burdensome on anesthesia departments and could provide immense cost-saving measures for healthcare institutions at large.

While there are many intravenous (IV) sedatives, establishing IV access while awake could be very traumatizing, leaving a lasting negative impression of the healthcare environment in a child's mind. Hence, enteral medications may be more acceptable and child friendly. This is especially valuable in patients who require repeated surveillance imaging and who demonstrate heightened level of anxiety and fear with each visit. Among sedative agents that could be administered enterally, dexmedetomidine may be superior due to minimal respiratory depression while providing anxiolysis and analgesia. Of note, dexmedetomidine is a highly selective alpha2-adrenoreceptor agonist that exerts its hypnotic action through activation of central pre- and postsynaptic alpha2-receptors in the locus coeruleus, mimicking natural sleep.

Conditions
Anesthesia
Being tested
Dexmedetomidine, General Anesthesia (control group)
Keywords
Oral dexmedetomidine

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • DexmedetomidineDrug

    Participants will receive oral dexmedetomidine as the sole sedative agent for undergoing MRI

  • General Anesthesia (control group)Drug

    Participants will receive general anesthesia for their MRI

Study groups in NCT05619627
Study groupRoleWhat they receive
Dexmedetomidine 4 mcg/kgExperimentalGroup One: Subjects will receive oral dexmedetomidine 4 mcg/kg 2 hours prior to MRI
Receives: Drug: Dexmedetomidine
Dexmedetomidine 6 mcg/kgExperimentalGroup Two: Subjects will receive oral dexmedetomidine 6 mcg/kg 2 hours prior to MRI
Receives: Drug: Dexmedetomidine
Dexmedetomidine 8 mcg/kgExperimentalGroup Three: Subjects will receive oral dexmedetomidine 8 mcg/kg 2 hours prior to MRI
Receives: Drug: Dexmedetomidine
Dexmedetomidine 10 mcg/kgExperimentalGroup Four: Subjects will receive oral dexmedetomidine 10 mcg/kg 2 hours prior to MRI
Receives: Drug: Dexmedetomidine
Dexmedetomidine 12 mcg/kgExperimentalGroup Five: Subjects will receive oral dexmedetomidine 12 mcg/kg 2 hours prior to MRI
Receives: Drug: Dexmedetomidine
General anesthesiaActive comparatorControl group: Subjects will receive general anesthesia for their MRI
Receives: Drug: General Anesthesia (control group)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Oral dexmedetomidine dose with adverse event below moderate risk, as designated by SIVA, to obtain adequate MRI study

    The primary outcome is determining a dose of oral dexmedetomidine that will safely (adverse event (AE) below moderate risk, as designated by the World Society of Intravenous Anesthesia (SIVA) adverse sedation event reporting tool) provide adequate sedation to successfully complete an MRI. Images should have adequate quality and resolution to be interpretated and will be graded by an attending radiologist. Each MRI sequence will be graded 1-3. 1: no-mild motion artifact; 2: moderate motion artifact; 3: severe motion artifact (non-diagnostic).

    Measured: From date of the first enrollment until the end of assessment of data collected from the last participant, up to 70 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted17 Nov 2022
  2. Study start1 Nov 2026 (estimated)
  3. Primary completionNov 2027 (estimated)
  4. Study completionMar 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Supportive care
Allocation
Non-randomised
Intervention model
Sequential
Model description
Prospective Pilot Study, Single-site, open-label, phase I dose escalation trial
Masking
None (open label)
Enrolment
18 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05619627
Sponsor's protocol ID
STUDY00002526
Status last verified
Aug 2026
First submitted
5 Oct 2022
Last updated
4 Aug 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: All IPD that underlie results

Publications

  • Mason KP, Roback MG, Chrisp D, Sturzenbaum N, Freeman L, Gozal D, Vellani F, Cavanaugh D, Green SM. Results from the Adverse Event Sedation Reporting Tool: A Global Anthology of 7952 Records Derived from >160,000 Procedural Sedation Encounters. J Clin Med. 2019 Dec 1;8(12):2087. doi: 10.3390/jcm8122087.

    PubMed 31805686
  • Mason KP, Green SM, Piacevoli Q; International Sedation Task Force. Adverse event reporting tool to standardize the reporting and tracking of adverse events during procedural sedation: a consensus document from the World SIVA International Sedation Task Force. Br J Anaesth. 2012 Jan;108(1):13-20. doi: 10.1093/bja/aer407.

    PubMed 22157446
  • Sajid B, Mohamed T, Jumaila M. A comparison of oral dexmedetomidine and oral midazolam as premedicants in children. J Anaesthesiol Clin Pharmacol. 2019 Jan-Mar;35(1):36-40. doi: 10.4103/joacp.JOACP_20_18.

    PubMed 31057237
  • Weerink MAS, Struys MMRF, Hannivoort LN, Barends CRM, Absalom AR, Colin P. Clinical Pharmacokinetics and Pharmacodynamics of Dexmedetomidine. Clin Pharmacokinet. 2017 Aug;56(8):893-913. doi: 10.1007/s40262-017-0507-7.

    PubMed 28105598
  • Anttila M, Penttila J, Helminen A, Vuorilehto L, Scheinin H. Bioavailability of dexmedetomidine after extravascular doses in healthy subjects. Br J Clin Pharmacol. 2003 Dec;56(6):691-3. doi: 10.1046/j.1365-2125.2003.01944.x.

    PubMed 14616431
  • Mason KP, Zurakowski D, Zgleszewski SE, Robson CD, Carrier M, Hickey PR, Dinardo JA. High dose dexmedetomidine as the sole sedative for pediatric MRI. Paediatr Anaesth. 2008 May;18(5):403-11. doi: 10.1111/j.1460-9592.2008.02468.x. Epub 2008 Mar 18.

    PubMed 18363626
  • Lin L, Guo X, Zhang MZ, Qu CJ, Sun Y, Bai J. Pharmacokinetics of dexmedetomidine in Chinese post-surgical intensive care unit patients. Acta Anaesthesiol Scand. 2011 Mar;55(3):359-67. doi: 10.1111/j.1399-6576.2010.02392.x.

    PubMed 21288220
  • Iirola T, Ihmsen H, Laitio R, Kentala E, Aantaa R, Kurvinen JP, Scheinin M, Schwilden H, Schuttler J, Olkkola KT. Population pharmacokinetics of dexmedetomidine during long-term sedation in intensive care patients. Br J Anaesth. 2012 Mar;108(3):460-8. doi: 10.1093/bja/aer441. Epub 2012 Jan 25.

    PubMed 22277665
  • Lee S, Kim BH, Lim K, Stalker D, Wisemandle W, Shin SG, Jang IJ, Yu KS. Pharmacokinetics and pharmacodynamics of intravenous dexmedetomidine in healthy Korean subjects. J Clin Pharm Ther. 2012 Dec;37(6):698-703. doi: 10.1111/j.1365-2710.2012.01357.x. Epub 2012 May 31.

    PubMed 22650799
  • Hannivoort LN, Eleveld DJ, Proost JH, Reyntjens KM, Absalom AR, Vereecke HE, Struys MM. Development of an Optimized Pharmacokinetic Model of Dexmedetomidine Using Target-controlled Infusion in Healthy Volunteers. Anesthesiology. 2015 Aug;123(2):357-67. doi: 10.1097/ALN.0000000000000740.

    PubMed 26068206
  • Potts AL, Anderson BJ, Warman GR, Lerman J, Diaz SM, Vilo S. Dexmedetomidine pharmacokinetics in pediatric intensive care--a pooled analysis. Paediatr Anaesth. 2009 Nov;19(11):1119-29. doi: 10.1111/j.1460-9592.2009.03133.x. Epub 2009 Aug 25.

    PubMed 19708909
  • Chamadia S, Pedemonte JC, Hobbs LE, Deng H, Nguyen S, Cortinez LI, Akeju O. A Pharmacokinetic and Pharmacodynamic Study of Oral Dexmedetomidine. Anesthesiology. 2020 Dec 1;133(6):1223-1233. doi: 10.1097/ALN.0000000000003568.

    PubMed 32986820
  • Dashiff CJ, Weaver M. Development and testing of a scale to measure separation anxiety of parents of adolescents. J Nurs Meas. 2008;16(1):61-80. doi: 10.1891/1061-3749.16.1.61.

    PubMed 18578110
  • Keles S, Kocaturk O. Comparison of oral dexmedetomidine and midazolam for premedication and emergence delirium in children after dental procedures under general anesthesia: a retrospective study. Drug Des Devel Ther. 2018 Mar 28;12:647-653. doi: 10.2147/DDDT.S163828. eCollection 2018.

    PubMed 29636599
  • Weldon BC, Watcha MF, White PF. Oral midazolam in children: effect of time and adjunctive therapy. Anesth Analg. 1992 Jul;75(1):51-5. doi: 10.1213/00000539-199207000-00010.

    PubMed 1616162

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Dexmedetomidine in people with Anesthesia, run by Soroush Merchant at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 17 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 4 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Soroush Merchant, MD, MS (816-3018595, smerchant@cmh.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Oral dexmedetomidine dose with adverse event below moderate risk, as designated by SIVA, to obtain adequate MRI study (time frame: From date of the first enrollment until the end of assessment of data collected from the last participant, up to 70 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05619627, which also lists 16 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Aug 2026.

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