Carbon dioxide for gut distension during digestive endoscopy: Technique and practice survey

Table 2 Characteristics of CO₂ insufflators available for gut distension during endoscopy

	CO2-efficient	Olympus keymed ECR	Olympus UCR
Weight (kg)	9.0	26.0	4.9
Size (mm)	254 × 140 × 254	420 × 1049 × 539	130 × 156 × 334
Output of CO2 adjustable	No1	No	No
Indicator of the amount of gas delivered	Yes	No	No
Indicator of “empty tank”	Yes	Yes	Yes
FDA approved/CE mark	Yes/Yes	Yes/Yes	Yes/Yes
Availability	International	United Kingdom	International
Price (euros)	7400	NA	7000
Manufacturer	Bracco Imaging SPA, San Donato Milanese, Italy	Olympus Keymed, Southend-on-Sea, UK	Olympus, Tokyo, Japan

FDA: Food and Drug Administration; NA: not available.

¹When the vent hole of the insufflation/irrigation valve is not occluded, CO₂ flow decreases from 3 L/min to a managed flow of 0.25 L/min, in order to preserve CO₂ reserves. None of the three models allows selecting between different intensities of CO₂ flow (in contrast with the selection of low/medium/high intensities of air flow with air insufflators).