Effect of headphones on sevoflurane requirement for MRI

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• 作者：Mustafa O?urlu (1)
  Mehmet Emin Orhan (2)
  Salih ?inar (2)
  Ertan Piri (2)
  Ercan Kurt (2)
  Necdet Sut (3)
  Alparslan Turan (4)
  
• 关键词：Headphones ; MRI ; Sevoflurane
• 刊名：Pediatric Radiology
• 出版年：2012
• 出版时间：December 2012
• 年：2012
• 卷：42
• 期：12
• 页码：1432-1436
• 全文大小：163KB
• 参考文献：1. Schulte-Uentrop L, Goepfert MS (2010) Anaesthesia or sedation for MRI in children. Curr Opin Anaesthesiol 23:513-17 CrossRef
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• 作者单位：Mustafa O?urlu (1)
  Mehmet Emin Orhan (2)
  Salih ?inar (2)
  Ertan Piri (2)
  Ercan Kurt (2)
  Necdet Sut (3)
  Alparslan Turan (4)
  
  1. Department of Anesthesiology, Adnan Menderes University, Aydin, Turkey
  2. Department of Anesthesiology and Reanimation, GATA Military Hospital, Ankara, Turkey
  3. Department of Biostatistics, Trakya University, Edirne, Turkey
  4. Department of Outcomes Research, Cleveland Clinic, 9500 Euclid Ave., P-77, Cleveland, OH, 44195, USA
  
• ISSN：1432-1998

文摘

Background Acoustic noise may have adverse effects, even in patients under general anesthetic. Objective We aimed to determine the effect of headphones on sevoflurane requirements in children undergoing general anesthesia for an MRI scan. Materials and methods Children scheduled for MRI were enrolled in the study. Sevoflurane was used for general anesthesia in all children. Patients were randomly divided into two groups, one to wear headphones and the other none. After reaching a predetermined end-tidal concentration, the MRI scan was initiated, and the patient was evaluated by an observer blinded to the concentration of sevoflurane. Awakening was defined as eye opening, onset of continued purposeful movement or phonation. Using the Dixon up-and-down method, each target concentration was determined by the response of the previous child in the same group. Results The study included 28 children undergoing MRI. There was a significant difference in ED50 between the two groups (0.92, 0.81-.02, vs. 0.47, 0.42-.63; P-lt;-.001). The times to spontaneous arm and leg movements, eye opening and discharge from the post-anesthesia care unit were significantly shorter in patients with headphones than in those without (P-lt;-.001). However, there was no difference in times to hospital discharge (P--.056). Conclusion Noise-concealing headphones decrease inhalational anesthetic requirements and facilitate recovery. We recommend the routine use of headphones in children undergoing an MRI scan.