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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.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Sedation During MRI | Other | 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. |
| Measure | Description | Time Frame |
|---|---|---|
| Change in Body Temperature (ΔT) Before and After MRI | 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). | From immediately before sedation to immediately after completion of MRI (approximately 20-80 minutes) |
| Measure | Description | Time Frame |
|---|---|---|
| Change in Tympanic Body Temperature (ΔT) | 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) | From immediately before sedation (pre-MRI) to immediately after MRI completion (approximately 20-80 minutes). |
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Inclusion Criteria:
Exclusion Criteria:
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Pediatric patients younger than 18 years with ASA physical status I-III undergoing magnetic resonance imaging (MRI) under sedation between November 2023 and April 2024.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Ankara Etlik City Hospital | Altındağ | Ankara | Turkey (Türkiye) |
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| ID | Term |
|---|---|
| D001832 | Body Temperature Changes |
| ID | Term |
|---|---|
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
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| Regression Coefficient (B) for Continuous Body Temperature Change (ΔT, °C) | 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). | From immediately before sedation to immediately after completion of MRI (approximately 20-80 minutes) |