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마취제가 개의 Somatosensory Evoked Potentials (SEPs)에 미치는 영향
Effects of Anesthetics on Somatosensory Evoked Potentials (SEPs) in Dogs

Hong, Yeon-Jung   (College of Veterinary Medicine, Seoul National UniversityUU0000691  ); Jeong, Seong-Mok   (College of Veterinary Medicine, Seoul National UniversityUU0000691  ); Nam, Tchi-Chou   (College of Veterinary Medicine, Seoul National UniversityUU0000691  );
  • 초록

    본 실험은 각각의 마취방법이 체성감각유발전위 (SEPs) 파형에 미치는 영향을 알아보고 SEP의 측정에 적절한 마취방법을 찾고자 시행하였다. 임상적으로 건강하고 크기와 나이가 비슷한 다섯 마리의 잡종견을 대상으로 SEPs를 측정하고 각각의 측정값을 분석하였다. SEPs측정을 위해 후 경골신경을 자극하였고 요추 5-6번 사이에서 channel 1의 LP1과 LN1, 흉추 11-12사이에서 channel 2의 TP1, TN1을 기록하였다. 실험에 사용한 마취방법 중. Acepromazine + Thiopental Na + Isoflurane, Acepromazine + Propofol + Isoflurane, Diazepam + Xylazine, Xylazine + Ketamine, Acepromazine + Propofol infusion, 및 Propofol infusion등의 방법만이 SEPs측정이 가능하였고, 파형은 명확하였으며, 측정에 요구되어지는 일정 시간인 25분 이상 동안 마취 유지가 가능하였다. 또한 각 마취군에서의 SEPs 파형을 Acepromazine + Thiopental Na + Isoflurane군과 비교해 보았을 때 latency의 경우, Acepromazine + Propofol + Isoflurane군의 ST(stimulating point)-LN1, SP-TP1, Diazepam + Xylazine 군의 Chl-Ch2, Xylazine + Ketamine군의 Chl-Ch2, Acepromazine + Propofol infusion군의 ST-LP1와 Chl-Ch2에서 부분적으로 유의적인 차가 있었다. Conduction velocity의 경우, Acepromazine + Propofol + Isoflurane군의 ST-LN1, Diazepam + Xylazine군의 Chl-Ch2, Xylazine + Ketamine군의 Chl-Ch2, Acepromazine + Propofol infusion군의 ST-LP1, 그리고 Propofol infusion군의 ST-LN1의 측정값에서 유의적인 차가 있었지만 전반적으로는 전체적인 파형의 유의적인 변화는 없었다. 이상의 결과를 토대로 SEPs 측정시 흡입마취로는 Acepromazine + Thiopental + Isoflurane과 Acepromazine + Propofol + Isoflurane, 주사마취로는 Diazepam + Xylazine과 Xylazine + Ketamine, 점적마취로는 Acepromazine + Propofol infusion과 Propofol infusion 방법이 사용 가능한 것으로 확인되었다.


    This study was designed to evaluate the effects of anesthetics on waveform of SEPs and to authorize possible anesthetic protocol for measurement of the somatosensory evoked potentials (SEPs). Thirteen anesthetic methods were used. The SEPs were recorded on two channels (between the 5th and 6th lumbar vertebra as the channel 1 and between the 11th and 12th thoracic vertebra as the channel 2) following stimulation of posterior tibial nerve. ID analyze SEPs wave, latency and conduction velocity were measured. Among thirteen anesthetic methods, standard SEPs waveforms were observed in dogs anesthetized with following six methods: Acepromazine + Thiepfntal Na + Isoflurane, Acepronazine + Propofol + Isoflurane, Diazepam + Xylazine, Xylazine + Ketamine, Acepromazine + Propofol infusion and Propofol infusion. Above six methods could be used with sufficient anesthetic depth. The differences of latency and conduction velocity among six groups were minimal compared to general waveform of SEPs. These results indicate that the six anesthetic methods can be used for recording SEPs in the dog. In particular, Diazepam + Xylazine and XylaBine + Ketamine as injectable anesthesia are considered more convenient than other four methods in veterinary medicine.


  • 주제어

    개 .   체성감각유발전위 .   마취.  

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