AIM: The aim was to compare resuscitators' estimates of tidal volume (V(T)) and face mask leak with measured values during positive pressure ventilation (PPV) of newborn infants in the delivery room. PATIENTS AND METHODS: The authors measured inflating pressures and V(T) delivered using a respiratory function monitor, and calculated face mask leak. After 60 s of PPV, resuscitators were asked to estimate V(T) and face mask leak. These estimates were compared with measurements taken during the previous 30 s. RESULTS: The authors studied 20 infants who received a mean (SD) of 21 (6) inflations during the 30 s. The median (IQR) expired tidal volume (V(Te)) delivered was 8.7 ml/kg (5.3-11.3). V(Te) varied widely during each resuscitation and between resuscitators. Five resuscitators could not estimate V(Te), one overestimated and 14 underestimated their median delivered V(Te). The median (IQR) face mask leak was 29% (16-63%). Leak also varied widely during each resuscitation and between resuscitators. One resuscitator could not estimate mask leak, four overestimated leak and 15 underestimated leak. CONCLUSION: During face mask ventilation in the delivery room, V(T) and face mask leak were large and variable. The resuscitators were unable to accurately assess their face mask leak or delivered V(T).
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机译：目的：目的是比较复苏者对分娩室新生儿正压通气（PPV）期间潮气量（V（T））和口罩泄漏的估计值与测量值。患者和方法：作者使用呼吸功能监测仪测量了充气压力和输送的V（T），并计算了面罩泄漏量。在PPV 60 s后，要求复苏器估算V（T）和面罩泄漏。将这些估计值与之前30 s内进行的测量进行比较。结果：作者研究了20例在30 s内平均21（6）次通气的婴儿。输送的中位（IQR）潮气量（V（Te））为8.7 ml / kg（5.3-11.3）。 V（Te）在每次复苏期间和复苏器之间变化很大。五名复苏者无法估计V（Te），一名被高估了，十四名被低估了他们的中位交付V（Te）。面罩泄漏的中位数（IQR）为29％（16-63％）。每次复苏期间以及复苏器之间的泄漏也有很大差异。一名复苏者无法估计口罩泄漏，四个被高估的泄漏和15个被低估的泄漏。结论：在分娩室面罩通风期间，V（T）和面罩泄漏较大且变化不定。复苏器无法准确评估其面罩泄漏或输送的V（T）。
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