A Study to Evaluate the Relationship of a Predictive Gag Survey and Patient’s Gag Reflex in Flexible Laryngoscopy


About this study

The primary purpose of this study is to assess the correlation between the predictive gag survey (PGS) and a provider-completed GSI  in patients undergoing nasolaryngoscopy. 

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Patients ≥ 18 years old.
  • Patients undergoing flexible laryngoscopy.

Exclusion Criteria:

  • Patients with neurological disorders potentially impacting gag or cough reflex.
  • Patients who havenever received dental care.
  • Patients unable to complete the surveys provided.
  • Patients with head and neck cancer and post radiation.
  • Patients with a history of extensive tracheal and/or laryngeal surgeries.
  • Patients under 18 years old.
  • Patients who cannot consent for themselves
  • Patients who have undergone flexible laryngoscopy previously on the same day as the study


Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status

Rochester, Minn.

Mayo Clinic principal investigator

Semirra Bayan, M.D.

Closed for enrollment

More information


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