Novel Pharyngeal Metrics to Predict Dysphagia Outcomes

Will assess the change in pressure by pharyngeal high resolution manometry over the time frame. The primary measure of interest is Integral Pressure during the 10 mL swallow at the tongue base. This is measured in two forms:

• Pharyngeal Contractile Integral (PhCI): range is between 100 and 600 mmHg·s·cm ; 2. Mesopharyngeal Max Pressure (tongue base): range is between ~115-210 mmHg in healthy adults. Positive change would be a movement toward normal range of pressure. This metric is measured automatically in both Software systems used to evaluate pharyngeal pressure (WiscMano and Swallow gateway).

Will assess the change in pressure by pharyngeal high resolution manometry over the time frame. The primary measure of interest is Integral Pressure during the 10 mL swallow at the tongue base. This is measured in two forms:

• Pharyngeal Contractile Integral (PhCI): range is between 100 and 600 mmHg·s·cm ; 2. Mesopharyngeal Max Pressure (tongue base): range is between ~115-210 mmHg in healthy adults. Positive change would be a movement toward normal range of pressure. This metric is measured automatically in both Software systems used to evaluate pharyngeal pressure (WiscMano and Swallow gateway).

Will assess the change in fluoroscopy and clinical assessments over the time frame. The primary tool of measurement is the combined score of the Modified Barium Swallow Impairment Profile (MBSImP). This is a 17 item standardized tool to measure impairment of swallow identified using contrast barium swallows. The investigators will use the composite pharyngeal score which ranges from 0 to 3, the higher the score the more abnormal the swallow function, Normal swallows will score 5 or less and severe dysphagia will score 9 or higher. Movement toward 0 is a positive or improved swallow function, movement toward 23 is negative or worsening swallow function and full range is from 0 to 29 with a higher score indicating worse impairment. Scores under 13 indicate the mild or no impairment.

The Sydney Swallowing Questionnaire (SSQ) is a patient reported symptom scale with 17 questions, each scaled from 0+ no dysfunction to 100 equal extreme dysfunction using a 100mm visual analogue scale with 0 and 100 as anchors. The total score can be recorded for 0 to 1700. Normal swallowers will average 40 with a range of 200 to 0. Dysphagia patients average 800 with a range of 150 to 1600. Movement toward 0 will be considered an improvement, movement toward 1700 worsening in swallowing ability preserved by the patient.

The Eating Assessment Tool-10 (EAT-10) is a short 10 question swallowing assessment tool with 10 questions each scaled 0 to 4, total can be between 0 and 40. The normal swallowers will score under 2. Changes toward 0 will be identified as improved swallow symptom function, changes toward 40 worsening symptoms.

International Dysphagia Diet Standardization initiative, Functional Oral Intake scale. Standardize scale of diet (liquid and solid food, iddsi.org). Foods scaled from regular diet 7 to liquidized 3, and liquids scaled from thin liquids 0 to extremely thick 4. Improvement in diet will be report if patients move toward 0 in liquid intake and toward 7 in solid food intact, and movement in the opposite directions will be evidence of poorly food and liquid tolerance.