What is the Functional Oral Intake Scale (FOIS) and how is it used clinically?

• A. A 7-point scale describing the level of oral intake from nothing by mouth (level 1) to full oral intake with no restrictions (level 7); used to document and track functional swallowing status and progress.
• B. A scale for esophageal motility.
• C. A scale for laryngeal function.
• D. A scale for swallow reflex time.

Answer: (A)

The Functional Oral Intake Scale (FOIS) is a seven-point measure that describes how much a patient can take by mouth in everyday life. It ranges from nothing by mouth to full oral intake with no restrictions. Clinically, it’s used to document a patient’s current oral intake, monitor changes over time, and guide treatment planning, goal setting, and discharge decisions. FOIS focuses on what the patient actually eats and drinks, reflecting functional swallowing status and progress, rather than on specific physiological measurements like esophageal motility, laryngeal function, or swallow reflex timing.