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

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Resumo: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®. 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.
Autores principais:Boal Carvalho, Pedro
Outros Autores:Magalhães, Joana; Dias DE Castro, Francisca; Monteiro, Sara; Rosa, Bruno; Moreira, Maria João; Cotter, José Almeida Berkeley
Assunto:Adult Endoscopy, Gastrointestinal Female Gastrointestinal Hemorrhage Humans Male Predictive Value of Tests Retrospective Studies Sensitivity and Specificity Capsule Endoscopy Small intestine
Ano:2017
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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