GI Motility Unit

About the GI Motility Unit

Established by Dr. William Whitehead, the UNC GI Motility Unit is nationally renowned. Each year we perform more than 3,500 GI motility procedures.

Our TeamMotility

  • Director: Yolanda Scarlett, MD
  • Providers
    • Evan Dellon, MD, MPH
    • Spencer Dorn, MD, MPH
    • Kathleen Ferrell, PA-C
    • Danielle Maier, PA-C
    • Ryan Madanick, MD
    • Yolanda Scarlett, MD.
  • Pelvic Floor Biofeedback Therapy provided by therapists from UNC Hospitals Center for Rehabilitation Care. 
  • Motility Nurses: Sheila Crawford, RN, Nancy Boswell, RN

Available motility procedures

  • Anorectal Manometry to evaluate constipation (including excessive straining and incomplete evacuation), fecal incontinence, and rectal pain.
  • Esophageal Manometry (High Resolution) to evaluate difficulty swallowing, heartburn, chest pain, and for pre-operative evaluation.
  • Esophageal Function Test combines esophageal manometry with impedance testing to assess bolus clearance.
  • pH Probe evaluates the frequency and severity of acid reflux, as well as its association with heartburn, regurgitation, chest pain, and cough.
  • Impedance/pH probe evaluates the frequency and severity of acid and non-acid reflux, as well as its association with heartburn, regurgitation, chest pain, and cough.
  • Breath test for Helicobacter Pylori (C-13) a non-invasive test for H. Pylori.
  • Hydrogen Breath Test for Bacterial Overgrowth to evaluate bloating, diarrhea, and malabsorption.
  • Hydrogen Breath Test for Lactose Malabsorption to evaluate lactose intolerance.
  • Pelvic Floor Biofeedback is provided by UNC pelvic floor physical therapists at both the Hillsborough Medical Office Building and the UNC Center for Rehabilitation Care (depending upon insurance, patient preference, and appointment availability).  Appropriate referrals are patients with fecal incontinence, constipation due to pelvic floor dyssenergia, and chronic proctalgia.  Anorectal manometry is first required.

How to refer a patient

You may directly refer patients for motility testing by simply faxing a completed procedure request form (available here) to 919-966-8764. Our scheduling office will directly schedule the appointment and mail the patient information about the appointment and procedure. Alternatively, some patients are first referred for outpatient consultation [see here].

How to contact us

During normal business hours please call 919-966-5563. After hours, messages may be left at 919-966-2319.