Ultrathin-wall, two-stage, twin endotracheal tube: a tracheal tube with minimal resistance and minimal dead space for use in newborn and infant patients.
Ultrathin-wall, two-stage, twin endotracheal tube: a tracheal tube with minimal resistance and minimal dead space for use in newborn and infant patients.
复制标题
超薄壁、两级、双气管插管：阻力最小、死腔最小的气管插管，适用于新生儿和婴儿患者。
DOI：
10.1097/01.pcc.0000128602.22489.2d
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Aly,Hany
中科院分区：
文献类型：
--
作者：
Kolobow,Theodor;Berra,Lorenzo;DeMarchi,Lorenzo;Aly,Hany
目的：设计和制造阻力最低、死腔最少、管壁最薄的新型新生儿用低阻力、低死腔的聚亚安酯气管导管。单位：美国国立卫生研究院实验室。干预：该气管的短口部分由聚亚安酯制成，用镍钛形状记忆合金(Nitiol)增强，使其具有抗挤压能力，其壁厚约为标准气管的一半。在气管导管的口腔部分，也就是唯一的死腔，我们连接了一个Y片。我们在Y的一只手臂上连接了一个内径较大的非强化(吸气)管，并与另一臂连接了一个类似的管(呼气)。测量和结果：根据压力/流量曲线计算的空气流动阻力约为可比标准气管管阻力的一半至三分之一，流速高达8 L/分钟，管子、接头和适配器死腔小3至7倍，具体取决于气管管连接件、呼吸器管连接件、结论：新型气管导管的气流阻力是标准气管导管的1/3~1/3，死腔体积比标准气管管小3~7倍，包括管子和接头的死腔。此外，它还提供了一种潜在的、准确、连续的在线监测吸气和呼气管路中的呼气氧气和二氧化碳浓度以及气体流量的方法，而不会造成死腔通风或气体流动阻力。
Objective:To design and fabricate crush-proof polyurethane tracheal tubes for the newborn with the lowest resistance, least dead space, and thinnest wall.Design:Test and evaluation of a novel, low-resistance, and low–dead-space tracheal tube for newborns.Setting:National Institutes of Health Research Laboratory.Interventions:The short orotracheal portion of the tracheal tube was fabricated of polyurethane, reinforced with flat nickel-titanium shape-memory alloy (Nitinol) to render the tube crush-proof, of a wall thickness about one half of a standard tracheal tube. To the oral part of the tracheal tube, which is the sole dead-space, we attached a Y piece. We connected to one arm of the Y a nonreinforced (inspiratory) tube of larger internal diameter, and a similar tube (expiratory) to the other.Measurements and Results:The computed air flow resistance, as derived from the pressure/flow curves, is about one half to one third the resistance of a comparable standard tracheal tube at flow rates up to 8 L/min, with a tubing, connector, and adapter dead space three to seven times smaller, depending on the tracheal tube connector piece, the ventilator tube connector piece, and size of the tracheal tube.Conclusions:The novel tracheal tube design has a resistance to gas flow one half to one third that of a standard tracheal tube and a dead-space volume three to seven times lower, including tubing and connector dead space. In addition, it offers a means for potential accurate, continuous online monitoring of expiratory oxygen and CO 2 concentration and gas flow, in both the inspiratory and the expiratory lines, without contributing to dead-space ventilation or gas flow resistance.