Patency Capsule Tolerability in School-Aged Children
Daisuke Tokuhara1, Kenji Watanabe, Yuki Cho
1Department of Pediatrics, Osaka City University Graduate School of Medicine, Osaka, Japan.
Insights
Patency capsule (PC) ingestion is challenging for some school-aged children. Height is a key factor in predicting ingestion difficulty, suggesting pre-assessment is needed before capsule endoscopy (CE).
Area of Science:
- Pediatric Gastroenterology
- Medical Device Technology
- Diagnostic Procedures
Background:
- A patency capsule (PC) is used to predict capsule endoscope (CE) retention.
- PC tolerability in children is not well-established.
- This study evaluates PC tolerability in school-aged children.
Purpose of the Study:
- To assess the tolerability and predict factors for ingestion difficulty of patency capsules in school-aged children.
- To compare the ease of ingesting patency capsules versus capsule endoscopes.
Main Methods:
- Retrospective analysis of 61 school-aged children undergoing patency capsule examination.
- Defined ingestion difficulty as taking 30 minutes or longer, or failure, to ingest the PC.
- Analyzed occurrence and determinants of ingestion difficulty, including age and height.
Main Results:
- 64% of patients successfully ingested the PC without difficulty.
- Younger and shorter children experienced more ingestion difficulty (p=0.04 and p=0.003, respectively).
- Height below 152 cm was the most significant predictor of PC ingestion difficulty; capsule endoscopy was easier to ingest than PC.
Conclusions:
- Patency capsule ingestion is not universally successful in school-aged children.
- Child's height and prior capsule ingestion experience should be considered before PC examination.
- Capsule endoscopy may be perceived as easier to ingest than patency capsules.
Background:
A patency capsule (PC) can help predict capsule endoscope (CE) retention; however, PC tolerability is unknown in children. We retrospectively evaluated PC tolerability in school-aged children.
Methods:
Sixty-one patients (median age, 12.9 years; range 7.4-17.3 years) who underwent PC examination were analyzed for occurrence and determinants of ingestion difficulty and relationships between ingestion of the 2 capsules. We defined ingestion difficulty as taking 30 min or more, or failure, to ingest the PC.
Results:
Thirty-nine patients (64%) successfully ingested the PC without ingestion difficulty. The other 22 had ingestion difficulty and were significantly younger (11.7 ± 2.2 vs. 13.0 ± 1.8 years; p = 0.04) and shorter (143.3 ± 14.0 vs. 154.6 ± 12.5 cm; p = 0.003) than those without ingestion difficulty. Multivariate analysis showed that the most significant factor for predicting PC ingestion difficulty was height (cutoff value, 152 cm). Time to ingest the CE was significantly shorter than that for PC ingestion (8 ± 32 vs. 20 ± 58 min; p = 0.01). All patients indicated that ingestion of the CE was easier because of its smooth surface compared with the PC.
Conclusions:
PC ingestion is not guaranteed in school-aged children. PC ingestion ability should be evaluated by considering the child's height and lack of experience ingesting capsules prior to PC examination.
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