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An Effective Transcranial Electric Motor-Evoked Potentials Method in Spinal Dural Arteriovenous Fistula Ligation Surgery

척수경막동정맥루 결찰술에서의 효과적인 경두개운동유발전위 검사방법

  • Jang, Min Hwan (Department of Neurology, Institute of Neuroscience Center, Samsung Medical Center) ;
  • Lee, In Seok (Department of Neurology, Institute of Neuroscience Center, Samsung Medical Center) ;
  • Lim, Sung Hyuk (Department of Neurology, Institute of Neuroscience Center, Samsung Medical Center)
  • 장민환 (삼성서울병원 뇌신경센터 신경과) ;
  • 이인석 (삼성서울병원 뇌신경센터 신경과) ;
  • 임성혁 (삼성서울병원 뇌신경센터 신경과)
  • Received : 2021.04.29
  • Accepted : 2021.05.26
  • Published : 2021.06.30

Abstract

The purpose of spinal dural arteriovenous fistula (SDAVF) ligation is to prevent neurological injury and the poor blood supply through ligation of arteriovenous fistula. Therefore, intraoperative neurophysiological monitoring (INM) is required via multimodal neurological examination for minimizing the side effects after surgery based on the patient's symptoms. Transcranial electric motor-evoked potentials (TceMEP) help to check the condition of the corticospinal tract. Whenever ligation is performed, TceMEP should be performed every minute to check for abnormalities. However, an examiner's lack of knowledge about the operation procedure and examination and also poor communication between the examiner and surgeon can cause incorrect timing of the stimulation of TceMEP that interferes with the procedure and causes side effects such as paralysis and motor weakness. As a result of this SDAVF ligation survey, it is believed that for proper INM, case reports will be needed along with further research and the examiner will also have to work closely with the surgeon to minimize neurological damage to patients.

척수경막동정맥루의 수술적기법은 동정맥루에 결찰을 통해 혈액공급을 원활하게 하여 신경학적 손상을 막는 수술법이다. 이에 INM 검사는 환자의 신경학적 증상에 따른 수술 후의 부작용을 최소화하기 위해 복합(multimodal)적인 신경계검사가 요구된다. TceMEP는 환자의 피질척수로(corticospinal tract)의 상태를 확인할 수 있는 검사이다. 척수경막동정맥루에서 결찰할 때마다 TceMEP를 분단위로 검사를 진행해 이상 유무를 확인해야 한다. 하지만 검사자가 수술과정이나 검사에 대한 술기가 부족하거나 검사자와 집도의 간에 원활하지 못한 의사소통으로 TceMEP의 잘못된 자극 시점은 수술진행에 방해가 되며 수술 후 환자에게 마비와 위약과 같은 부작용이 생길 수 있다. 척수경막동정맥루 결찰술에서 INM은 앞으로 더 많은 연구와 함께 추가적인 증례보고들이 필요할 것이라고 생각하며 검사자들 또한 환자의 신경학적 손상을 최소화하기 위해 노력해야 할 것이다.

Keywords

References

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