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Updated: Feb 8, 2026

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[New possibilities with retroflexed functional endoscopy].

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Summary
This summary is machine-generated.

Retroflexed functional endoscopy enhances diagnosis of swallowing and reflux disorders by visualizing complex interactions in the upper digestive tract. This unsedated, participatory approach improves patient care and interdisciplinary collaboration.

Keywords:
Diagnostic techniques and proceduresDysphagiaPatient participationRefluxTransnasal endoscopy without sedation

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Area of Science:

  • Gastroenterology and Otolaryngology
  • Diagnostic Endoscopy
  • Functional Analysis

Background:

  • Anterograde transnasal flexible endoscopy of the pharynx, larynx, and proximal trachea without sedation is established.
  • Retroflexed endoscopic functional analysis has recently been introduced.

Purpose of the Study:

  • To add retroflexed functional endoscopy from the oral cavity to the duodenum to anterograde diagnostics.
  • To precisely demonstrate complex interactions in conditions like dysphagia or pathological reflux.

Main Methods:

  • Utilized a 70-cm high-definition endoscope with a 200° retroflexed view, mm-cm scale, and roller system.
  • Observed mastication, food transport, and digestion in unsedated patients.
  • Developed a diagnostic algorithm with three specific pathways based on indication and symptoms.

Main Results:

  • The method allows for precise visualization of the interplay between different factors in complex conditions.
  • Defined diagnostic pathways for conditions originating in the oral cavity/pharynx/larynx, suspected reflux, or neurological/neuromuscular food transport disorders.
  • Addressed duodenogastric, gastroesophageal, and esophagopharyngeal reflux, as well as benign or malignant tumors.

Conclusions:

  • Functional endoscopy offers advantages for medical staff and patients.
  • The precise and participatory approach enhances healthcare diagnostics.
  • Provides a basis for interdisciplinary collaboration.