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Suspected blood indicator in capsule endoscopy: a valuable tool for gastrointestinal bleeding diagnosis

Authors :
Pedro BOAL CARVALHO
Joana MAGALHÃES
Francisca DIAS DE CASTRO
Sara MONTEIRO
Bruno ROSA
Maria João MOREIRA
José COTTER
Source :
Arquivos de Gastroenterologia, Vol 54, Iss 1, Pp 16-20
Publisher :
Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia (IBEPEGE).

Abstract

ABSTRACT BACKGROUND Small bowel bleeding is a leading indication for small bowel capsule endoscopy. The Suspected Blood Indicator (SBI) is a software feature directed to automatically detect bleeding lesions during small bowel capsule endoscopy. OBJECTIVE We aimed to assess SBI diagnostic accuracy for small bowel haemorrhage or potentially bleeding lesions during small bowel capsule endoscopy for small bowel bleeding. Methods - Single-centre retrospective study including 281 consecutive small bowel capsule endoscopy performed for small bowel bleeding during 6 years. The investigators marked lesions with high bleeding potential (P2), such as angioectasias, ulcers and tumours, as well as active bleeding during regular small bowel capsule endoscopy viewing with PillCam SB2(r). All small bowel capsule endoscopy were independently reviewed by another central reader using SBI. RESULTS Among the 281 patients, 29 (10.3%) presented with active haemorrhage while 81 (28.9%) presented with a P2 lesion. The most frequently observed P2 lesions were angioectasias (52), ulcers (15), polyps (7) and ulcerated neoplasias (7). SBI showed a 96.6% (28/29) sensitivity for active small bowel bleeding, with a 97.7% negative predictive value. Regarding P2 lesions, the SBI displayed an overall sensitivity of 39.5%, being highest for ulcerated neoplasias (100%), but significantly lower for angioectasias (38.5%) or ulcers (20.0%). CONCLUSION Although SBI sensitivity for the automatic detection of potentially bleeding lesions was low, it effectively detected active small bowel bleeding with very high sensitivity and negative predictive value.

Details

Language :
English
ISSN :
16784219 and 00042803
Volume :
54
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Arquivos de Gastroenterologia
Publication Type :
Academic Journal
Accession number :
edsdoj.15b84ab53b8243e6ab021b096932c517
Document Type :
article
Full Text :
https://doi.org/10.1590/s0004-2803.2017v54n1-03