Journal of Korean Neurosurgical Society

The Korean Neurosurgical Society (대한신경외과학회)
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Efficacy of Low Dose Barbiturate Coma Therapy for the Patients with Intractable Intracranial Hypertension Using the $Bispectral^{TM}$ Index Monitoring

  • An, Hung-Shik (Department of Neurosurgery, Kangdong Sacred Heart Hospital, Hallym University College of Medicine) ;
  • Cho, Byung-Moon (Department of Neurosurgery, Kangdong Sacred Heart Hospital, Hallym University College of Medicine) ;
  • Kang, Jeong-Han (Department of Neurosurgery, Kangdong Sacred Heart Hospital, Hallym University College of Medicine) ;
  • Kim, Moon-Kyu (Department of Neurosurgery, Kangdong Sacred Heart Hospital, Hallym University College of Medicine) ;
  • Oh, Sae-Moon (Department of Neurosurgery, Kangdong Sacred Heart Hospital, Hallym University College of Medicine) ;
  • Park, Se-Hyuck (Department of Neurosurgery, Kangdong Sacred Heart Hospital, Hallym University College of Medicine)
  • Received : 2009.12.21
  • Accepted : 2010.03.31
  • Published : 2010.04.28
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Abstract

Objective : Barbiturate coma therapy (BCT) is a useful method to control increased intracranial pressure (IICP) patients. However, the complications such as hypotension and hypokalemia have caused conditions that stopped BCT early. The complications of low dose BCT with $Bispectral^{TM}$ index (BIS) monitoring and those of high dose BCT without BIS monitoring have been compared to evaluate the efficacy of low dose BCT with BIS monitoring. Methods : We analyzed 39 patients with high dose BCT group (21 patients) and low dose BCT group (18 patients). Because BIS value of 40-60 is general anesthesia score, we have adjusted the target dose of thiopental to maintain the BIS score of 40-60. Therefore, dose of thiopental was kept 1.3 to 2.6 mg/kg/hour during low dose BCT. However, high dose BCT consisted of 5 mg/kg/hour without BIS monitoing. Results : The protocol of BCT was successful in 72.2% and 38.1% of low dose and high dose BCT groups, respectively. The complications such as QT prolongation, hypotension and cardiac arrest have caused conditions that stopped BCT early. Hypokalemia showed the highest incidence rate in complications of both BCT. The descent in potassium level were $0.63{\pm}0.26$ in low dose group, and $1.31{\pm}0.48$ in high dose group. The treatment durations were $4.89{\pm}1.68$ days and $3.38{\pm}1.24$ days in low dose BCT and high dose BCT, respectively. Conclusion : It was proved that low dose BCT showed less severe complications than high dose BCT. Low dose BCT with BIS monitoring provided enough duration of BCT possible to control ICP.

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References

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