EVALUATION OF THE SENSITIVITY OF THE EXPRESS-VIEW MODE OF THE MIROCAM CAPSULE ENDOSCOPY PLATFORM COMPARED TO CONVENTIONAL READING IN OBSCURE GASTROINTESTINAL BLEEDING

Aims:

The Express-View mode of the Mirocam capsule endoscopy (CE) platform is a newly introduced feature that aims to decrease the reading time by not capturing small bowel (SB) images considered repetitive. There is no evidence yet that its use can replace conventional reading. The authors aimed to evaluate the proportion of lesions detected by the Express-view reading mode.

Methods:

Single-center study, including individuals who underwent CE due to obscure gastrointestinal bleeding (OGIB) (overt or occult). Each CE was reviewed in standard reading mode and the findings were identified. Afterwards, the same CE was visualized with the Express-View mode and the authors evaluated if the findings previously identified were represented with this mode.

Results:

208 CE were evaluated. The mean age was 66.4 years old (± 13.83) and 55.8% (n = 116) were female. The majority of CE were performed due to anemia (78.8%, n = 164). A total of 1667 lesions were identified using standard reading. The Express-View mode had a sensitivity per lesion of 88.7% (n = 1479). Non-visualized lesions (n = 188) were mainly angiectasias (54.3%, n = 102) and erosions or ulcers (24.5%, n = 46). The detection rate per lesion was the lowest in the duodenum (p < 0.05). The use of the Express-View mode was able to capture all clinically significant lesions in 66.3% of the patients.

Conclusions:

In this study, per lesion sensitivity was higher to the one described in a previous multicenter study (88.7% vs. 77.2%). However, per patient sensitivity for significant lesions appeared to be lower (66.3% vs. 82.2%). Per lesion sensitivity was lower in the duodenum, which may be associated with a faster transit time in this segment. The express-view mode cannot substitute conventional reading.