title: Propofol drip infusion anesthesia for MRI scanning: two case reports.
abstract: The magnetic resonance imaging (MRI) room is a special environment. The required intense magnetic fields create unique problems with the use of standard anesthesia machines, syringe pumps, and physiologic monitors. We have recently experienced 2 oral maxillofacial surgery cases requiring MRI: a 15-year-old boy with developmental disability and a healthy 5-year-old boy. The patients required complete immobilization during the scanning for obtaining high-quality images for the best diagnosis. Anesthesia was started in the MRI scanning room. An endotracheal intubation was performed after induction with intravenous administration of muscle relaxant. Total intravenous anesthesia via propofol drip infusion (4-7 mg/kg/h) was used during the scanning. Standard physiologic monitors were used during scan pauses, but special monitors were used during scanning. In MRI scanning for oral maxillofacial surgery, general anesthesia, with the added advantage of having a secured airway, is recommended as a safe alternative to sedation especially in cases of patients with disability and precooperative chidren.
authors.affiliation: Department of Dental Anesthesiology, Tsurumi University School of Dental Medicine, Yokohama, Japan. sasao-m@tsurumi-u.ac.jp
authors.forename: Mami
authors.initials: M
authors.lastname: Sasao-Takano
authors.forename: Kan
authors.initials: K
authors.lastname: Misumi
authors.forename: Masayuki
authors.initials: M
authors.lastname: Suzuki
authors.forename: Yoko
authors.initials: Y
authors.lastname: Kamiya
authors.forename: Izumi
authors.initials: I
authors.lastname: Noguchi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kawahara
mesh_terms: D000293:Adolescent; D000771:Anesthesia, Intravenous / Q000379:methods*; D018686:Anesthetics, Intravenous / Q000008:administration & dosage*; D015924:Blood Pressure Monitors; D019296:Capnography / Q000295:instrumentation; D002675:Child, Preschool; D004562:Electrocardiography / Q000295:instrumentation; D004867:Equipment Design; D006801:Humans; D007262:Infusions, Intravenous; D007442:Intubation, Intratracheal / Q000379:methods; D008048:Lip Neoplasms / Q000175:diagnosis; D008202:Lymphangioma / Q000175:diagnosis; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods*; D008297:Male; D008991:Monitoring, Physiologic / Q000295:instrumentation / Q000379:methods; D009062:Mouth Neoplasms / Q000175:diagnosis; D009465:Neuromuscular Agents / Q000008:administration & dosage / Q000627:therapeutic use; D019647:Oral Surgical Procedures; D010092:Oximetry / Q000295:instrumentation; D015742:Propofol / Q000008:administration & dosage*
chemical_list: D018686:Anesthetics, Intravenous; D009465:Neuromuscular Agents; D015742:Propofol