Skip to main content



  • 2-week motility rotation occurs in both the first and third year of fellowship.
  • Fellows will participate in esophageal pH, esophageal manometry, anorectal manometry, balloon expulsion testing and pelvic floor biofeedback procedures.
  • GI Motility Lab is currently under the co-supervision of Dr. Sonia S. Yoon and Dr. Asad Ullah, clinical faculty members in the Division of Gastroenterology.
  • GI motility lab team is comprised of a technician as well as dedicated nurse specialists and Advanced Practice Providers who handle patient preparation, scheduling, probe placement, performance of procedures and initial analysis of procedures.
  • Fellows will participate in performance of motility procedures (including placement of catheters) and interpretation of studies where applicable.

Principal Teaching/Learning Activities

  • Fellows will learn the indications/contra-indications, patient preparations and protocols involved in each GI Motility procedure performed in the laboratory:
    • pH impedance
    • Wireless pH testing
    • Esophageal manometry
    • Anorectal manometry with balloon expulsion
    • Pelvic floor biofeedback
  • Fellows will observe and participate in all aspects of patient preparation and placement of catheters.
  • Dedicated time will be devoted to interpretation and analysis of the various motility tests as described above.
  • Online learning modules pertaining to pH impedance and esophageal manometry are expected to be completed prior to the end of the rotation.

Problem Mix/Patient Characteristics/Types of Encounters

The experience is an outpatient experience with patients referred for a variety of general gastroenterology complaints related to acid-peptic issues, dysphagia, non-cardiac chest pain, constipation and fecal incontinence.