Hasei Mari, Hirata Takahiko, Nishihara Hidenobu, Tanigami Hironobu, Takashina Masaki, Mori Takahiko
Department of Anesthesia, Osaka Prefectural General Hospital, Osaka 558-8558.
Masui. 2003 Apr;52(4):394-8.
The risk of occupational exposure to waste anesthetic gases still remains during inhaled induction. In this study we investigated how much we were occupationally exposed to anesthetic gases during induction period.
Twenty-six adult patients were induced with sevoflurane 5% using a face mask for three minutes and maintained with sevoflurane 1% after end-tracheal intubations (IH-Group). Twenty-two adult patients were induced with intravenous anesthetics and maintained with sevoflurane 1% after end-tracheal intubations(IV-Group). The concentration of sevoflurane was measured by Multi-gas Monitor 1302 (Bruel & Kjaer: Denmark) every 70 seconds. Sample gas was suctioned from breathing zone of anesthesiologists. All of our operating rooms are equipped with waste gas scavenging system.
The peak concentration of sevoflurane is significantly higher in IH-Group (15.91 +/- 22.64 ppm) compared with IV-group (0.36 +/- 0.25 ppm). The period when sevoflurane concentration exceeded 0.5 ppm is significantly longer IH-Group (18.55 +/- 10.51 min.) compared to IV-Group (1.92 +/- 4.56 min.).
The induction with intravenous anesthetics is a better method in order to reduce occupational exposure of anesthesiologists to anesthetic gases.
在吸入诱导过程中，职业暴露于废弃麻醉气体的风险依然存在。在本研究中，我们调查了在诱导期职业暴露于麻醉气体的程度。
26例成年患者使用面罩以5%七氟醚诱导3分钟，气管插管后以1%七氟醚维持（吸入诱导组）。22例成年患者采用静脉麻醉诱导，气管插管后以1%七氟醚维持（静脉诱导组）。每70秒用1302型多气体监测仪（丹麦Bruel & Kjaer公司）测量七氟醚浓度。从麻醉医生的呼吸区域抽吸样气。我们所有的手术室均配备废气清除系统。
吸入诱导组七氟醚的峰值浓度（15.91±22.64 ppm）显著高于静脉诱导组（0.36±0.25 ppm）。七氟醚浓度超过0.5 ppm的时间段，吸入诱导组（18.55±10.51分钟）显著长于静脉诱导组（1.92±4.56分钟）。
为减少麻醉医生职业暴露于麻醉气体，静脉麻醉诱导是更好的方法。
