점막하 Midazolam의 병용투여 시 BIS 분석을 이용한 진정 평가
Sedation evaluation using bis index assessment with and without the added submucosal midazolam
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Chloral hydrate(CH)와 Hydroxyzine의 경구 복용을 이용한 진정과 Midazolam을 점막하 주사로 추가 투여한 진정을 Bispectral(BIS) index를 이용하여 두 진정법의 진정 깊이의 차이를 비교 평가하고자 하였다. 모든 환아는 2세-6세 사이의 미국 마취과학회 신체평가 등급 I의 건강한 환아로 진정 요법이 요구되었으며 국소마취와 최소 2개 이상의 치아에 대한 수복 치료가 치료에 포함되었다. 무작위 방법으로 환아를 CH(60mg/kg)와 Hydroxyzine(1mg/kg)을 복용하는 군과 CH(60mg/kg)와 Hydroxyzine(1mg/kg)을 복용하고 점막하 주사로 Midazolam(0.1mg/kg)을 추가 투여하는 군으로 나누었다. 진정 요법 동안 Nitrous Oxide는 두 군 모두 50%로 유지하였다. 환아 행동 평가는 녹화된 비디오 테이프를 보며 매 2분마다 Behavior scale을 이용하여 quiet(Q), crying(C), movement(M), or struggling(S)으로 측정하였다. 두 군의 진정 깊이 비교 평가를 위해 치료가 시작된 시점부터 40분 동안 2분 간격으로 측정한 Pulse rate(PR), Saturation percentage of O2(SpO2), behavior scale과 매 2분 단위로 계산된 평균 BIS index를 t-test와 Levene’s test를 이용하여 분석하였다. 두 군의 평균 BIS index와 BIS index의 분포는 유의할 만한 차이를 보였다(P<0.001). 점막하 주사로 Midazolam을 추가 투여한 군에서 평균 BIS index가 더 낮은 값을 가지며 표준 편차가 작았다. PR와 SpO2는 두 그룹 모두 정상 범위내의 값을 보였다. 점막하 주사를 이용한 Midazolam의 추가 투여는 안전성을 크게 침해하지 않는 범위 내에서 진정 깊이를 깊게 해주며 안정적인 진정을 이루게 함으로써 보다 바람직한 진정을 유도해 줄 수 있는 것으로 사료된다.
Abstract
The aim of this study was to examine the difference of the depth of sedation using the Bispectral index assessment with and without the added submucosal Midazolam to oral Chloral hydrate and Hydroxyzine for pediatric patients. Twenty seven sedation cases were performed in this study. Selection criteria included good health(ASA I), 2 to 6 years of age, the need for sedation to receive dental treatment including anesthesia, and restorative procedure over at least two teeth. Patients were randomly classified into one group taking oral Chloral hydrate(60 mg/kg) and Hydroxyzine(1 mg/kg) and the other group recieving Chloral hydrate(60 mg/kg), Hydroxyzine(1mg/kg) and submucosal Midazolam(0.1 mg/kg). Nitrous Oxide(50%) was used for both group during sedation. Patients were monitored using a pulse oximeter and a Bispectral monitor. A behavior scale was rated as quiet(Q), crying(C), movement(M), or struggling(S) every 2 minutes watching a recorded videotape. Analysis showed a significant difference in mean Bispectral index and SD during sedation across two groups(P<0.001). The group of patients injected with submucosal Midazolam in addition to oral Chloral hydrate and Hydroxyzine showed a lower mean Bispectral index and a narrower SD. PR and SpO2 for both groups remained within the normal values. Submucosal Midazolam improved the sedation quality by deepening sedation depth without compromising safety and enabled the sedation pattern to be kept more stable.
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