Figure 4From: Effectiveness of CO2-insufflated endoscopic submucosal dissection with the duodenal balloon occlusion method for early esophageal or gastric cancer: a randomized case control prospective study The PETCO 2 level from 10 to 120 min after the start of ESD was significantly lower in the duodenal balloon group (22.1 ± 4.74 mmHg) than in the regular group (46.6 ± 1.69 mmHg) ( P = 0.0001). Back to article page