Intranasal Dexmedetomidine Sedation for Pediatric CT Imaging

Study Overview
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Brief Summary
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This study has the objective to determine if intranasal dexmedetomidine, a sedative, is suitable for pediatric sedation in children undergoing tomographic scans.

Detailed Description
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Invasive procedures for diagnosis in children are a routine part of an emergency care department. Most of these procedures are painful and uncomfortable for both the child and for their families, and impossible to be performed without patient immobilization. Thus, procedural sedation is critical to this end. Procedural sedation can be defined as the use of sedatives, analgesics, or dissociative drugs for anxiolysis, analgesia, sedation and motor control during painful procedures. The increasing demand of pediatric emergency services and, consequently, the performance of procedures that require sedation, made it impossible for universal coverage of anesthesiologists in such procedures. As a result, a wide variety of drugs, sedation techniques and different degrees of effectiveness and adverse effects of sedation, such as irritability and sedation failure are described. Particularly in children who need CT scan, there is usually no need for venous access for sedation. However, our most used drug, chloral hydrate, was abandoned in most centers outside the country. When administered orally, the drug produces malaise and vomiting, and gastric mucosal irritation, in addition, the rectal absorption is unpredictable. Additionally, in recent years increasing importance has been given to the fact that the drug be related, in vitro, the increased carcinogenicity in mice by cellular structural change, which is leading to the ban of same drug in the United States and in some european countries. Dexmedetomidine is a highly selective alpha-2 agonist receptors, which has the advantage of mimicking natural sleep, according to electroencephalographic studies, with low incidence of adverse events. Its application as a sedative in pediatric procedures, as well as pre-anesthetic medication, has been increasingly described according to recent studies. The intranasal route has been used with the advantage of avoiding a venous line or intramuscular injection, with good results; however, it hasn't been described yet in children undergoing CT scans. Thus, this work is justified to describe, in a pioneering way, the use of intranasal dexmedetomidine for sedation for CT, documenting its efficacy and safety in a specific cohort of patients sedated for this purpose.

Official Title
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Intranasal Dexmedetomidine Sedation for Pediatric Computerized Tomography Imaging

Conditions
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Traumatic Brain Injury, Children

Intervention / Treatment
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* Drug: Dexmedetomidine


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Children between 1 month to 15 years old undergoing CT scans in the pediatric emergency department Exclusion Criteria: Glasgow coma scale < 13 Epistaxis or suspected base skull fracture Use of contrast or need for an IV line before sedation Uncontrolled gastroesophageal reflux or vomiting Current (or within past 3 months) history of apnea of prematurity requiring an apnea monitor Acute, unstable respiratory disease Unstable cardiac status Craniofacial anomaly Medication use: digoxin Moya Moya Disease New onset stroke American Society of Anesthesiologists physical status ≥3

Ages Eligible for Study
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Minimum Age: 1 Month
Maximum Age: 15 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Dexmedetomidine<br>All children undergoing | Drug: Dexmedetomidine<br> <br> * Other names: Precedex (brand name);|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Rates of sedation failure with intranasal dexmedetomidine for sedation for pediatric CT imaging | Main outcome for this research is to know if IN dexmedetomidine is effective for adequate sedation in children undergoing CT scannings. This will be reported as percentage of failed sedations, if they occur. Failed sedations will be defined if after a initial 2.5 mcg/kg dose along with another 0.5 mcg/kg dose after 15 minutes, the child does not sedate. | Failure to sedate will be defined as non-completion of CT imaging after 2 nasal doses of dexmedetomidine (2.5 mcg/kg at admission; 0.5 mcg/kg after 15 minutes if not sedated). | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Safety of IN dexmedetomidine for pediatric CT imaging | Patients will be fully monitored every five minutes after IN dexmedetomidine administration, with heart rate, respiratory rate, non-invasive blood pressure and pulse oximetry. Any adverse events will be reported. | At admission and every 5 minutes after sedation | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Dexmedetomidine, Administration, Intranasal, Children, Computerized Tomography