PDF(Pubmed)
Abstract：
UNASSIGNED: The 25°back-up position is proposed to increase the efficacy of preoxygenation and provide better tracheal intubating conditions when using a direct laryngoscope. This study aimed to compare the ease of tracheal intubation between supine and 25° back-up positions when using two video laryngoscopes (VLS).
UNASSIGNED: One hundred adults with normal airways and belonging to the American Society of Anesthesiologists physical status classes I and II, requiring general anaesthesia, were randomised in groups K and M. The trachea was intubated using King Vision and McGrath VLS in either supine (groups K1 and M1) or 25° back-up (groups K2 and M2) positions. The 25° backup position was given by raising the operating table from the horizontal position by flexing the torso at the hips so that an imaginary line connected the patient\'s external auditory meatus to the sternal notch. Modified Intubation Difficulty Scale (mIDS) was the primary outcome, and intubation time, the number of intubation attempts, vital parameters, and complications were compared secondarily. Statistical analysis was done using MedCalc software by applying an independent t-test for parametric data and a Chi-square test for categorical data and finding the risk ratio.
UNASSIGNED: Mean (Standard deviation) mIDS was significantly reduced using both VLS in the 25° back-up position [0.92 (0.75) versus 0.48 (0.58), P = 0.025, degree of freedom (DF): 48, mean difference (95% confidence interval [CI]):-0.44 (-0.821 to - 0.059) in group K1 versus group K2 and 0.76 (0.59) versus 0.36 (0.48), P = 0.012, DF: 48, mean difference (95% CI): -0.40(-0.706 to - 0.094) in group M1 versus group M2, respectively]. The risk ratio comparing both the positions for the total number of patients requiring manoeuvres during intubation using both the VLS was 0.48 with P = 0.0004 and 95% CI = 0.305 - 0.765. Intubation time was shorter in the 25° backup position by using King Vision (P = 0.005) and McGrath (P = 0.042) VLS.
UNASSIGNED: The 25° backup position helps provide ease of intubation using both the channelled (King Vision) and non-channelled (McGrath) VLS.
UNASSIGNED: One hundred adults with normal airways and belonging to the American Society of Anesthesiologists physical status classes I and II, requiring general anaesthesia, were randomised in groups K and M. The trachea was intubated using King Vision and McGrath VLS in either supine (groups K1 and M1) or 25° back-up (groups K2 and M2) positions. The 25° backup position was given by raising the operating table from the horizontal position by flexing the torso at the hips so that an imaginary line connected the patient\'s external auditory meatus to the sternal notch. Modified Intubation Difficulty Scale (mIDS) was the primary outcome, and intubation time, the number of intubation attempts, vital parameters, and complications were compared secondarily. Statistical analysis was done using MedCalc software by applying an independent t-test for parametric data and a Chi-square test for categorical data and finding the risk ratio.
UNASSIGNED: Mean (Standard deviation) mIDS was significantly reduced using both VLS in the 25° back-up position [0.92 (0.75) versus 0.48 (0.58), P = 0.025, degree of freedom (DF): 48, mean difference (95% confidence interval [CI]):-0.44 (-0.821 to - 0.059) in group K1 versus group K2 and 0.76 (0.59) versus 0.36 (0.48), P = 0.012, DF: 48, mean difference (95% CI): -0.40(-0.706 to - 0.094) in group M1 versus group M2, respectively]. The risk ratio comparing both the positions for the total number of patients requiring manoeuvres during intubation using both the VLS was 0.48 with P = 0.0004 and 95% CI = 0.305 - 0.765. Intubation time was shorter in the 25° backup position by using King Vision (P = 0.005) and McGrath (P = 0.042) VLS.
UNASSIGNED: The 25° backup position helps provide ease of intubation using both the channelled (King Vision) and non-channelled (McGrath) VLS.
摘要：
■提出了25°的备用位置，以增加预充氧的功效，并在使用直接喉镜时提供更好的气管插管条件。这项研究旨在比较使用两个视频喉镜（VLS）时仰卧和25°备用位置之间气管插管的难易程度。
■一百名正常气道的成年人，属于美国麻醉师协会的身体状况I级和II级，需要全身麻醉,随机分为K组和M组。使用KingVision和McGrathVLS在仰卧位（K1和M1组）或25°后位（K2和M2组）插管。通过在臀部弯曲躯干将手术台从水平位置抬起，以使一条假想线将患者的外耳道连接到胸骨切迹，从而给出25°的备用位置。改良插管困难量表（mIDS）是主要结果，和插管时间,尝试插管的次数,重要参数，其次比较并发症。使用MedCalc软件通过对参数数据应用独立t检验和对分类数据应用卡方检验并找到风险比进行统计分析。
■在25°备用位置使用两个VLS时，平均（标准偏差）mIDS显着降低[0.92（0.75）对0.48（0.58），P=0.025，自由度（DF）：48，平均差（95％置信区间[CI]）：K1组与K2组的-0.44（-0.821至-0.059）和0.76（0.59）与0.36（0.48），M1组与M2组的P=0.012，DF：48，平均差异（95％CI）：-0.40（-0.706至-0.094）]。在使用VLS插管期间需要操作的患者总数的两个位置的风险比为0.48，P=0.0004，95％CI=0.305-0.765。通过使用KingVision（P=0.005）和McGrath（P=0.042）VLS，在25°备用位置插管时间更短。
■25°备用位置有助于使用通道（KingVision）和非通道（McGrath）VLS轻松插管。
■一百名正常气道的成年人，属于美国麻醉师协会的身体状况I级和II级，需要全身麻醉,随机分为K组和M组。使用KingVision和McGrathVLS在仰卧位（K1和M1组）或25°后位（K2和M2组）插管。通过在臀部弯曲躯干将手术台从水平位置抬起，以使一条假想线将患者的外耳道连接到胸骨切迹，从而给出25°的备用位置。改良插管困难量表（mIDS）是主要结果，和插管时间,尝试插管的次数,重要参数，其次比较并发症。使用MedCalc软件通过对参数数据应用独立t检验和对分类数据应用卡方检验并找到风险比进行统计分析。
■在25°备用位置使用两个VLS时，平均（标准偏差）mIDS显着降低[0.92（0.75）对0.48（0.58），P=0.025，自由度（DF）：48，平均差（95％置信区间[CI]）：K1组与K2组的-0.44（-0.821至-0.059）和0.76（0.59）与0.36（0.48），M1组与M2组的P=0.012，DF：48，平均差异（95％CI）：-0.40（-0.706至-0.094）]。在使用VLS插管期间需要操作的患者总数的两个位置的风险比为0.48，P=0.0004，95％CI=0.305-0.765。通过使用KingVision（P=0.005）和McGrath（P=0.042）VLS，在25°备用位置插管时间更短。
■25°备用位置有助于使用通道（KingVision）和非通道（McGrath）VLS轻松插管。
