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Related Experiment Video

Updated: Dec 31, 2025

Utilization of Capsules for Negative Staining of Viral Samples within Biocontainment

Utilization of Capsules for Negative Staining of Viral Samples within Biocontainment

Published on: July 19, 2017

Patency Capsule Aspiration.

Keita Takeda^1,2, Hiroyuki Tashimo¹, Kazuko Miyakawa¹

¹Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Japan.

Internal Medicine (Tokyo, Japan)

|January 10, 2020

Summary

A swallowed patency capsule caused breathing difficulties in a patient. Flexible bronchoscopy successfully removed the capsule intact, preventing airway inflammation from its barium contents.

Keywords:

bronchial aspiration complications patency capsule

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Area of Science:

Gastroenterology
Pulmonology
Medical Device Safety

Background:

A 77-year-old male patient presented with anemia, history of abdominal surgeries for colon and gastric cancer.
Investigating anemia via endoscopy, the patient swallowed a patency capsule.

Observation:

Post-swallowing, the patient experienced acute dyspnea.
Imaging (chest radiography and CT scan) confirmed patency capsule aspiration into the bronchus intermedius.

Findings:

Successful retrieval of the patency capsule was achieved using flexible bronchoscopy.
A specialized technique involving a balloon catheter prevented capsule deformation during removal.
This method ensured the capsule remained intact, preventing barium leakage into the airway.

Implications:

Highlights the risk of patency capsule aspiration into the tracheobronchial tree.
Demonstrates an effective endoscopic technique for safe, non-deformed capsule removal.
Emphasizes the importance of prompt intervention to prevent barium-induced airway inflammation.