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  Indian J Med Microbiol
 

Figure 2: Esophageal and gastric pressures: Quantification of the muscular pressure generated by the coordinated action of all respiratory muscles. (a) Tracings of esophageal (Peso), gastric (Pga) and transdiaphragmatic (Pdi) pressures (Pdi = Pga − Peso) are displayed with 2 active inspiratory efforts on the left and one passive breath on the right. Parameters calculated to quantify inspiratory effort based on these recordings are shown: Tidal change in Peso (deltaPeso), tidal change in transdiaphragmatic pressure (deltaPdi), pressure-time product of the respiratory muscles (PTPes) and the diaphragm (PTPdia). (b) The schema shows the nasogastric catheter with an air-filled balloon (in blue) located in the lower third of the esophagus

Figure 2: Esophageal and gastric pressures: Quantification of the muscular pressure generated by the coordinated action of all respiratory muscles. (a) Tracings of esophageal (Peso), gastric (Pga) and transdiaphragmatic (Pdi) pressures (Pdi = Pga − Peso) are displayed with 2 active inspiratory efforts on the left and one passive breath on the right. Parameters calculated to quantify inspiratory effort based on these recordings are shown: Tidal change in Peso (deltaPeso), tidal change in transdiaphragmatic pressure (deltaPdi), pressure-time product of the respiratory muscles (PTPes) and the diaphragm (PTPdia). (b) The schema shows the nasogastric catheter with an air-filled balloon (in blue) located in the lower third of the esophagus