Department of Anesthesiology and Pain Medicine, School of Medicine, Ewha Womans University, Seoul, Korea.
Korean J Anesthesiol. 2013 Apr;64(4):315-20. doi: 10.4097/kjae.2013.64.4.315. Epub 2013 Apr 22.
The Pentax Airway Scope (AWS) is a video laryngoscope designed to facilitate tracheal intubation with a high-resolution image. The Pentax AWS has been reported to cause less hemodynamic stress than the Macintosh laryngoscope. The aims of this study are to investigate the differences in hemodynamic responses and norepinephrine concentrations to tracheal intubation between procedures using he Pentax AWS and the Macintosh laryngoscope.
Forty patients (American Society of Anesthesiologists class I-II, age range: 18-60 years) were randomly assigned to be intubated with either the Pentax AWS or the Macintosh laryngoscope while under general anesthesia. Routine monitoring, including invasive arterial blood pressure and bispectral index, were applied. Thiopental (4 mg/kg), fentanyl (1 µg/kg), midazolam (0.05 mg/kg), and rocuronium (0.6 mg/kg) were administered for anesthetic induction. Systolic, diastolic, and mean blood pressures and heart rates were recorded pre-intubation, immediately post-intubation (T0), and over the following 10 minutes at one minute intervals (T1, T2, T3, T4, T5…T10). Patient blood was sampled for norepinephrine concentrations pre-intubation (baseline) and post-intubation (T1). Evidence of sore throat was evaluated 30 min and 24 hr after extubation. Data were transformed to % basal and expressed as mean ± SD.
The systolic, diastolic, and mean blood pressure, and heart rate at T0 and T4 were significantly different between the two groups. There was no significant difference in plasma norepinephrine between the two groups. The difference in incidence of sore throat was not significant between the two groups.
Pentax-AWS for tracheal intubation has greater hemodynamic stability than the Macintosh blade laryngoscope.
Pentax Airway Scope（AWS）是一种视频喉镜，旨在提供高分辨率图像以方便气管插管。已有报道称，与 Macintosh 喉镜相比，Pentax AWS 引起的血流动力学应激更小。本研究旨在研究使用 Pentax AWS 和 Macintosh 喉镜进行气管插管时血流动力学反应和去甲肾上腺素浓度的差异。
40 名患者（美国麻醉医师协会分级 I-II，年龄范围：18-60 岁）被随机分为使用 Pentax AWS 或 Macintosh 喉镜进行插管。应用常规监测，包括有创动脉血压和脑电双频指数。给予硫喷妥钠（4mg/kg）、芬太尼（1μg/kg）、咪达唑仑（0.05mg/kg）和罗库溴铵（0.6mg/kg）进行麻醉诱导。记录插管前（基础）、插管即刻（T0）以及随后 10 分钟内每 1 分钟（T1、T2、T3、T4、T5……T10）的收缩压、舒张压和平均血压以及心率。在插管前（基础）和插管后（T1）采集患者的血液样本以测量去甲肾上腺素浓度。在拔管后 30 分钟和 24 小时评估咽喉痛的证据。数据转换为%基础值并表示为平均值±标准差。
两组患者的 T0 和 T4 时的收缩压、舒张压和平均血压以及心率均有显著差异。两组之间的血浆去甲肾上腺素浓度无显著差异。两组之间咽喉痛的发生率无显著差异。
与 Macintosh 叶片喉镜相比，Pentax-AWS 用于气管插管具有更大的血流动力学稳定性。
