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Table 2 Ultrasound assessment during the ultrasound guided esophageal pressure application

From: Ultrasound-guided esophageal compression during mask ventilation in small children: a prospective observational study

  N = 42
Gastric air insufflation (n, %) 2, 4.7
Esophageal air insufflation (n, %) 4, 9.5
Esophagus position (Left side to trachea, %) 41, 97.6
Tracheal air insufflation (n, %) 42, 100
Maximal peak inspiratory pressure (cmH20) 20.8 ± 3.2
Gastric antrum CSA (cm2) 1.0 ± 0.3
  Baseline Ultrasound guided esophageal pressure applied P value
Esophagus depth from skin (mm) 9.8 ± 2.3 7.2 ± 1.9  < 0.001
Esophagus width (mm) 6.5 ± 1.5 7.3 [6.4–8.4] 0.020
Esophagus height (mm) 4.4 [3.9–5.3] 3.6 [2.8–4.0]  < 0.001
POGO score 100 [100–100] 100 [100–100] 0.220
  1. Data presented as mean ± SD, number or median (IQR). CSA cross sectional area, POGO percentage of glottis opening score