Uludağ Öznur, Kaya Recai, Tutak Atilla, Doğukan Mevlüt, Çelik Mustafa, Dumlupınar Ebru
Anesthesiology and Reanimation, Adıyaman University Faculty of Medicine, Adıyaman, TUR.
Anesthesiology and Reanimation, Private Hospital, Osmaniye, TUR.
Cureus. 2019 Sep 20;11(9):e5705. doi: 10.7759/cureus.5705.
Objective Anesthesia may be required to ensure the immobility of the patient during a magnetic resonance imaging (MRI) scan, particularly in pediatric patients. An MRI scanner generates radiofrequency radiation (RFR) to obtain images of parts of the body. During an MRI procedure, an amount of RFR is transformed into heat by the body, thereby leading to increased body temperature. However, patients are at increased risk of hypothermia due to the impairment of thermoregulation by anesthesia and the cold and dry environment of the MRI room. The aim of this study was to investigate the effects of anesthesia on body temperature with regard to patient safety in pediatric patients undergoing an MRI scan. Materials and methods The study included a total of 40 children aged three to 10 years who underwent an MRI procedure. The patients were divided into two groups based on the administration of anesthesia: (I) non-sedated and (II) sedated. Prior to the procedure, non-sedated patients were informed about the procedure by a psychiatrist. Body temperature was measured from the tympanic membrane and skin in each patient. The MRI scan was performed at room temperature (20°C-22°C) with a relative humidity of 35%-40%. Results No significant change was found between pre- and post-scan body temperatures in Group I, whereas a significant decrease was found between pre- and post-scan body temperatures in Group II. No complication occurred in any patient due to temperature change or anesthesia. Conclusion A significant decrease in body temperature was found in pediatric patients undergoing an MRI procedure under sedation. The results implicated that anesthesia has a remarkable effect on the balance between the temperature increase caused by RFR and the temperature decrease caused by anesthesia.
目的 在磁共振成像（MRI）扫描期间，可能需要麻醉以确保患者保持不动，尤其是儿科患者。MRI扫描仪会产生射频辐射（RFR）以获取身体各部位的图像。在MRI检查过程中，一定量的RFR会被身体转化为热量，从而导致体温升高。然而，由于麻醉对体温调节的损害以及MRI室寒冷干燥的环境，患者发生体温过低的风险增加。本研究的目的是探讨麻醉对接受MRI扫描的儿科患者体温的影响，以确保患者安全。材料和方法 本研究共纳入40名年龄在3至10岁接受MRI检查的儿童。根据麻醉给药情况将患者分为两组：（I）未镇静组和（II）镇静组。在检查前，由精神科医生向未镇静的患者介绍检查过程。测量每位患者鼓膜和皮肤的体温。MRI扫描在室温（20°C - 22°C）、相对湿度35% - 40%的条件下进行。结果 第一组扫描前后体温无显著变化，而第二组扫描前后体温显著下降。没有患者因体温变化或麻醉出现并发症。结论 在接受镇静的儿科MRI检查患者中发现体温显著下降。结果表明，麻醉对RFR引起的体温升高和麻醉引起的体温下降之间的平衡有显著影响。
