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TitleSuspected blood indicator in capsule endoscopy: a valuable tool for gastrointestinal bleeding diagnosis
Other titles"Suspected Blood Indicator" na enteroscopia por cápsula: uma ferramenta útil no diagnóstico de hemorragia gastrointestinal
Author(s)Boal Carvalho, Pedro
Magalhães, Joana
Dias DE Castro, Francisca
Monteiro, Sara
Rosa, Bruno
Moreira, Maria João
Cotter, José Almeida Berkeley
Endoscopy, Gastrointestinal
Gastrointestinal Hemorrhage
Predictive Value of Tests
Retrospective Studies
Sensitivity and Specificity
Capsule Endoscopy
Small intestine
Issue date2017
PublisherInstituto Brasileiro de Estudos e Pesquisas de Gastroenterologia (IBEPEGE)
JournalArquivos de Gastroenterologia
Abstract(s)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.
AccessOpen access
Appears in Collections:ICVS - Artigos em Revistas Internacionais com Referee

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