A Modified Fiberoptic Endoscopic Evaluation of Swallowing Evaluating Esophageal Dysphagia by a Capsule: A Pilot Study

Youval Slovik, Benyamin Meir Kaminer, Gorali Revital, Alona Ron, Mai Harris, Oren Ziv, Ayelet Loutati, Oded Cohen

Research output: Contribution to journalArticlepeer-review

Abstract

While functional endoscopic evaluation of swallowing (FEES) is the most useful diagnostic test for the evaluation of dysphagia, it cannot evaluate the esophageal phase of swallowing. To evaluate if a modification for the FEES exam by swallowing an empty capsule and screening of the upper esophagus could be used for early detection of esophageal dysphagia. A prospective, single-center, pilot study. At the end of a standard FEES exam, the patients were asked to swallow an empty capsule. Fifteen seconds later, the endoscope was inserted into the upper esophagus. A pathological capsule test was defined when the capsule was seen in the esophagus. In such cases, the patient was advised to undergo a gastroscopy, MBS, or esophageal manometry, which were compared to the results of the capsule test. The capsule test was utilized in 109 patients. A pathological capsule test was found in 55 patients (57.8%). In 48 patients (87.3%), an isolated or combined esophageal dysphagia was seen. The accuracy value of the capsule test compared to gastroenterology tests was 83.3%, sensitivity 88.46%, specificity 75%, PPV 85%, and NPV 80%. A modification of the standard FEES exam by including an empty capsule swallow test with an upper esophagus examination may provide a useful screening tool for esophageal dysphagia.

Original languageEnglish
JournalDysphagia
Early online date13 Jun 2024
DOIs
StateE-pub ahead of print - 13 Jun 2024
Externally publishedYes

Bibliographical note

Publisher Copyright:
© The Author(s) 2024.

Keywords

  • Capsule
  • Dysphagia
  • Fees
  • Laryngoscope
  • Swallowing

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