Body Temperature Changes, Magnetic Resonance Imaging, Pediatric Anesthesia
Conditions
Keywords
Pediatric Anesthesia, Sedation, Magnetic Resonance Imaging, Body Temperature Changes, Pediatric Patients
Brief summary
Magnetic resonance imaging (MRI) is widely used in pediatric patients and frequently requires sedation or general anesthesia. Both sedation and MRI-related environmental factors may influence thermoregulation. This prospective observational study aimed to evaluate body temperature changes in children undergoing MRI under sedation and to identify factors associated with these changes. A total of 285 pediatric patients (ASA physical status I-III) were included. Tympanic body temperature was measured immediately before sedation and after completion of MRI, and the temperature difference (ΔT) was calculated. Demographic, clinical, and environmental variables were analyzed to determine predictors of temperature change.
Interventions
OTHERSedation During MRI
This is a prospective observational study. No experimental intervention was applied. All pediatric patients underwent routine sedation for clinically indicated MRI procedures according to institutional standard practice. The study evaluated body temperature changes before and after MRI without modifying clinical management.
Sponsors
Ankara Etlik City Hospital
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
1 Days to 17 Years
Healthy volunteers
No
Inclusion criteria
* Age \<18 years. * American Society of Anesthesiologists (ASA) physical status I-III. * Scheduled to undergo clinically indicated magnetic resonance imaging (MRI) under sedation. * Written informed consent obtained from parent.
Exclusion criteria
* Age ≥18 years. * ASA physical status IV-V. * Known allergy to anesthetic medications used for sedation. * Unstable vital signs prior to MRI. * Fever (body temperature ≥37.5°C) before MRI. * Severe pulmonary or cardiovascular comorbidities. * Requirement for advanced airway management (laryngeal mask airway or endotracheal intubation). * Refusal or absence of parental consent.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Body Temperature (ΔT) Before and After MRI | From immediately before sedation to immediately after completion of MRI (approximately 20-80 minutes) | The difference between tympanic body temperature measured immediately before sedation and immediately after completion of MRI (post-MRI minus pre-MRI temperature), expressed in degrees Celsius (°C). |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in Tympanic Body Temperature (ΔT) | From immediately before sedation (pre-MRI) to immediately after MRI completion (approximately 20-80 minutes). | Change in core body temperature measured at the tympanic membrane using a Braun Thermoscan Ear Thermometer PRO 6000 (accuracy ±0.2°C). ΔT is calculated as post-MRI temperature minus pre-MRI temperature. Unit of Measure: Degrees Celsius (°C) |
| Regression Coefficient (B) for Continuous Body Temperature Change (ΔT, °C) | From immediately before sedation to immediately after completion of MRI (approximately 20-80 minutes) | Independent predictors of continuous body temperature change (ΔT, °C) will be evaluated using multivariable linear regression analysis. In this model, ΔT (calculated as post-MRI minus pre-MRI tympanic temperature) will be entered as the dependent variable. The following predefined variables will be included simultaneously as independent predictors: age group (0-2, 3-7, 8-17 years), sex (male/female), ASA physical status (I-III), body mass index (kg/m²), fasting duration (hours), MRI duration (minutes), MRI room temperature (°C), MRI room humidity (%), contrast administration (yes/no), presence of comorbidity (yes/no), malignancy (yes/no), and allergy history (yes/no). |
Countries
Turkey (Türkiye)
Outcome results
None listed