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



Document title: Suspected blood indicator in capsule endoscopy: a valuable tool for gastrointestinal bleeding diagnosis
Journal: Arquivos de gastroenterologia = Archives of gastroenterology
Database: PERIÓDICA
System number: 000407104
ISSN: 0004-2803
Authors: 1

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Institutions: 1Hospital Senhora da Oliveira, Guimaraes. Portugal
Year:
Season: Ene-Mar
Volumen: 54
Number: 1
Pages: 16-20
Country: Brasil
Language: Portugués
Document type: Artículo
Approach: Aplicado
English abstract 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
Portuguese abstract A hemorragia do intestino delgado é uma das principais indicações para a realização de enteroscopia por cápsula. A ferramenta "Suspected Blood Indicator (SBI)", incluída no software de leitura da enteroscopia por cápsula, tem como objetivo a deteção automática de hemorragia e de lesões potentialmente hemorrágicas. OBJETIVO Pretendemos avaliar a acuidade diagnóstica do SBI para a deteção de hemorragia ou lesões potencialmente hemorrágicas durante a enteroscopia por cápsula no contexto de hemorragia do intestino delgado. MÉTODOS Estudo retrospectivo incluindo 281 enteroscopia por cápsula (PillCam SB2(r)) consecutivas realizadas por hemorragia do intestino delgado durante 6 anos. Os investigadores registaram lesões com potential hemorrágico elevado (P2), como angiectasias, úlceras e neoplasias, assim como hemorragia activa. Todos os exames foram revistos independentemente por outro investigador, utilizando o SBI. RESULTADOS Dos 281 doentes, 29 (10,3%) apresentaram hemorragia ativa, enquanto 81 (28,9%) apresentaram uma lesão P2. As lesões P2 mais frequentes foram angiectasias (52), úlceras (15), póipos (7) e neoplasias ulceradas (7). O SBI demonstrou uma sensibilidade de 96,6% (28/29) para hemorragia activa, com um valor preditivo negativo de 97,7%. Para as lesões P2, a sensibilidade global foi de 39%: 100% para neoplasias ulceradas, 38,5% para angiectasias e 20% para úlceras
Disciplines: Medicina
Keyword: Diagnóstico,
Gastroenterología,
Endoscopia por cápsula,
Intestino delgado,
Hemorragia gastrointestinal
Keyword: Medicine,
Diagnosis,
Gastroenterology,
Capsule endoscopy,
Small bowel,
Gastrointestinal hemorrhage
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