BACKGROUND AND AIM: Excretion of the patency capsule (PC) within a certain time frame may be used to demonstrate luminal patency prior to capsule endoscopy (CE). We aimed to determine how often further radiological imaging is needed to confirm luminal patency after PC, assess radiologists' ability to locate the PC on plain abdominal films, and evaluate the outcomes of a novel computed tomography (CT) protocol for PC localization. METHODS: A study of the ability of radiologists to localize PC using plain abdominal films was performed. A novel protocol targeting a limited CT at the level of the PC identified on the "scout" film if retained 30 h post-ingestion was prospectively evaluated in 400 consecutive patients undergoing PC. RESULTS: In a study of the confidence with which radiologists could localize the PC on plain films, radiologists preferred abdominal CT to localize PCs identified on plain films in 74% of cases. In a protocol based on the use of a PC and targeted, limited CT scan to confirm small bowel patency in those failing to excrete the PC 30 h post-ingestion, the sensitivity, specificity, positive, and negative predictive value were 99.4%, 90.0%, 99.7%, and 81.0%, respectively. Crohn's disease was the only statistically significant predictor associated with higher risk of luminal stricture (P=0.001) in post-hoc analysis. CONCLUSIONS: Excretion of the PC 30 h post-ingestion reliably predicts safe CE passage. Plain abdominal radiology is unreliable and a scout film targeted, limited CT scan offers an accurate minimal radiation method of determining small bowel patency.
BACKGROUND AND AIM: Excretion of the patency capsule (PC) within a certain time frame may be used to demonstrate luminal patency prior to capsule endoscopy (CE). We aimed to determine how often further radiological imaging is needed to confirm luminal patency after PC, assess radiologists' ability to locate the PC on plain abdominal films, and evaluate the outcomes of a novel computed tomography (CT) protocol for PC localization. METHODS: A study of the ability of radiologists to localize PC using plain abdominal films was performed. A novel protocol targeting a limited CT at the level of the PC identified on the "scout" film if retained 30 h post-ingestion was prospectively evaluated in 400 consecutive patients undergoing PC. RESULTS: In a study of the confidence with which radiologists could localize the PC on plain films, radiologists preferred abdominal CT to localize PCs identified on plain films in 74% of cases. In a protocol based on the use of a PC and targeted, limited CT scan to confirm small bowel patency in those failing to excrete the PC 30 h post-ingestion, the sensitivity, specificity, positive, and negative predictive value were 99.4%, 90.0%, 99.7%, and 81.0%, respectively. Crohn's disease was the only statistically significant predictor associated with higher risk of luminal stricture (P=0.001) in post-hoc analysis. CONCLUSIONS: Excretion of the PC 30 h post-ingestion reliably predicts safe CE passage. Plain abdominal radiology is unreliable and a scout film targeted, limited CT scan offers an accurate minimal radiation method of determining small bowel patency.
Authors: Melissa F Hale; Carolyn Davison; Simon Panter; Kaye Drew; David S Sanders; Reena Sidhu; Mark E McAlindon Journal: Frontline Gastroenterol Date: 2015-03-06
Authors: Foong Way D Tai; Pierre Ellul; Alfonso Elosua; Ignacio Fernandez-Urien; Gian E Tontini; Luca Elli; Rami Eliakim; Uri Kopylov; Sara Koo; Clare Parker; Simon Panter; Reena Sidhu; Mark McAlindon Journal: United European Gastroenterol J Date: 2021-03-19 Impact factor: 4.623
Authors: Diana Yung; Sarah Douglas; Anthony R Hobson; Andry Giannakou; John N Plevris; Anastasios Koulaouzidis Journal: Endosc Int Open Date: 2016-03-22
Authors: Uri Kopylov; Artur Nemeth; Alba Cebrian; Gabriele Wurm Johansson; Henrik Thorlacius; Ignacio Fernandez-Urien Sainz; Anastasios Koulaouzidis; Rami Eliakim; Ervin Toth Journal: Endosc Int Open Date: 2016-08-08