About this trial

This research is being done to better characterize the part of the nose that helps us smell. Currently, the only ways to study smell loss mostly rely on how people report it, rather than being able to see the underlying structures directly. In this study, we will use a special microscope (Confocal Laser Endomicroscopy (CLE)), originally developed for brain tissue, to look at the part of the nose that helps to detects smell. We hope to identify the tiny structures in that area and see how they might be different in people who have smell loss compared to those who do not.

Eligibility criteria

Qualifiers

Adults aged ≥18 years

Undergoing endoscopic sinus or endonasal skull base surgery while under - general anesthesia where the nasal turbinate is accessible

Able to complete study questionnaires and psychophysical smell testing

Able to provide informed consent.

Disqualifiers

Known allergy or hypersensitivity to fluorescein

Pregnancy

Medical instability precluding participation

Severe anatomic obstruction preventing safe access to the olfactory cleft and nasal turbinate

Trial design

Treatments tested in this trial

  • CONVIVO system
  • Conventional histologic evaluation
  • Fluorescein injection, USP 10%

Treatment groups

36 Participants
are divided into 2 treatment groups

Locations

1
Dartmouth-Hitchcock Medical Center03755, LebanonNew Hampshire, United States

Sponsors and collaborators

Dartmouth-Hitchcock Medical Center

Lead sponsor

National Center for Advancing Translational Sciences (NCATS)

Collaborator