Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, The Netherlands.
Arch Dis Child Fetal Neonatal Ed. 2012 Jul;97(4):F254-8. doi: 10.1136/archdischild-2011-300336. Epub 2011 Dec 5.
To investigate the compressive force applied to the head during mask ventilation and determine whether this force increases in response to an attempt to correct the mask leak.
The authors asked 24 participants (consultants, fellows and nurses) to administer positive pressure ventilation to a modified leak-free, term newborn manikin using a self-inflating bag (SIB) and a Neopuff T-piece device. Recordings were made before and after the participants were informed about their percentage of mask leak and asked to correct this. Airway pressure and flow were measured using a Florian monitor, and the force applied to the head was measured using a concealed custom-made load cell weighing scale.
There were no differences in the mean (SD) force applied to the head between devices used and before or after the attempt to correct the mask leak (SIB before 2215 (892) and after 2195 (989) g; Neopuff before 1949 (957) and after 2028 (909) g). There was a large variation in force with both devices before and after the attempt (coefficient of variation: SIB before 40% and after 45%; Neopuff before 50% and after 45%). There was no correlation between mask leak and the difference in force used before and after the attempt to correct the mask leak using both devices.
During mask ventilation of a manikin, the authors observed that large forces were exerted on the head with either an SIB or a Neopuff, but these forces did not increase during the attempt to minimise the mask leak.
研究面罩通气时施加于头部的压力，并确定该压力是否会随试图纠正面罩泄漏而增大。
作者要求 24 名参与者（顾问、研究员和护士）使用自充式气囊（SIB）和新生儿复苏器 T 型件对一个改良的无泄漏足月新生儿模型进行正压通气。在参与者被告知其面罩泄漏百分比并被要求纠正泄漏之前和之后进行记录。使用 Florian 监测器测量气道压力和流量，使用隐藏的定制称重传感器测量施加于头部的力。
两种装置的头部受力均值（标准差）在使用前后无差异（SIB 之前为 2215（892）g，之后为 2195（989）g；Neopuff 之前为 1949（957）g，之后为 2028（909）g）。两种装置在尝试纠正面罩泄漏前后均有较大的力变化（变异系数：SIB 之前为 40%，之后为 45%；Neopuff 之前为 50%，之后为 45%）。两种装置均未观察到面罩泄漏与尝试纠正面罩泄漏前后使用的力差值之间存在相关性。
在对模型进行面罩通气时，作者观察到，使用 SIB 或新生儿复苏器时，头部均受到较大的力，但在试图最小化面罩泄漏时，这些力并未增大。
