Japan Digestive Disease Week 2021
International Poster Session 1 (JDDW)
November 5, 9:30–10:10, Room 16 (Kobe International Exhibition Hall No.3 Building Digital Poster Venue)
IP-2_G
Red dichromatic imaging reduces endoscopic treatment time of esophageal varices
- 1
- Gastroenterology and Hepatology, Niiza Shiki Central General Hospital
- 2
- Gastroenterology and Hepatology, Tokyo Medical University Hospital
Background: Red dichromatic imaging (RDI) is a novel image-enhanced endoscopy, which increases the visibility of deeper vessels. We retrospectively investigated whether RDI can shorten treatment times of EIS and which operational procedure time was affected, compared with white light imaging (WLI).
Methods: A total of 175 patients (RDI: 70; WLI: 85) were enrolled. Treatment times were compared between RDI and WLI, and predictors associated with treatment time were analyzed by multivariate analysis. For the 24 cases (RDI: 12; WLI: 12) in which treatment videos were recorded, the procedure times of each step (observation of esophageal varices (EV), needle flush, positioning, puncture, observation of bleeding, hemostasis, observation after hemostasis) were measured. Regarding the 7 patients with EV bleeding, color differences were calculated between the bleeding point and the blood pool using the CIE (L*a*b*) color measurement.
Results: Treatment times were shorter in the RDI group (RDI vs. WLI = 35.1 vs. 42.2 min, p=0.001). ‘RDI function’ and ‘amount of sclerosant’ were extracted as independent predictors of treatment time. Times for ‘observation of EV’ and ‘observation of bleeding’ were shorter in the RDI group (p=0.013 and 0.035). Regarding the color difference, RDI significantly increased the visibility of the bleeding point (32.1±13.0 vs. 13.7±10.2, p<0.001).
Conclusion: RDI can shorten the treatment time of EIS by increasing the visibility of the bleeding point.
Methods: A total of 175 patients (RDI: 70; WLI: 85) were enrolled. Treatment times were compared between RDI and WLI, and predictors associated with treatment time were analyzed by multivariate analysis. For the 24 cases (RDI: 12; WLI: 12) in which treatment videos were recorded, the procedure times of each step (observation of esophageal varices (EV), needle flush, positioning, puncture, observation of bleeding, hemostasis, observation after hemostasis) were measured. Regarding the 7 patients with EV bleeding, color differences were calculated between the bleeding point and the blood pool using the CIE (L*a*b*) color measurement.
Results: Treatment times were shorter in the RDI group (RDI vs. WLI = 35.1 vs. 42.2 min, p=0.001). ‘RDI function’ and ‘amount of sclerosant’ were extracted as independent predictors of treatment time. Times for ‘observation of EV’ and ‘observation of bleeding’ were shorter in the RDI group (p=0.013 and 0.035). Regarding the color difference, RDI significantly increased the visibility of the bleeding point (32.1±13.0 vs. 13.7±10.2, p<0.001).
Conclusion: RDI can shorten the treatment time of EIS by increasing the visibility of the bleeding point.
- Index Term 1: Red dichromatic imaging
- Index Term 2: Image-enhanced endoscopy