Table 2.
Videofluoroscopic Swallow Study Outcomes
| VFSS Metrics units | Baseline | 4 DPS | 6 WPS | 12 WPS | ||||
|---|---|---|---|---|---|---|---|---|
| S | T | S | T | S | T | S | T | |
| Lick Rate # per second | 7.94 (0.60) | 8.09 (0.30) | 7.54 (0.57) | 7.58 (0.42) | 7.98 (0.55) | 7.91 (0.50) | 7.74 (0.43) | 7.62 (0.56) |
| Swallow Rate # per 2 seconds | 4.72 (0.70) | 5.02 (0.60) | 4.30 (0.76) | 4.35 (0.59) | 4.49 (0.86) | 4.60 (0.61) | 4.91 (0.56) | 4.62 (0.40) |
| Inter-Swallow Interval seconds | 0.48 (0.09) | 0.42 (0.07) | 0.53 (0.12) | 0.53 (0.08) | 0.54 (0.13) | 0.49 (0.08) | 0.45 (0.06) | 0.46 (0.05) |
| Lick-Swallow Ratio Licks/swallow | 3.08 (0.09) | 2.75 (0.70) | 3.42 (1.21) | 3.40 (0.58) | 3.76 (1.28) | 3.22 (0.73) | 2.80 (0.39) | 2.80 (0.51) |
| Pharyngeal Transit Time seconds | 0.10 (0.00) | 0.10 (0.01) | 0.11 (0.01) | 0.11 (0.01) | 0.11 (0.01) | 0.11 (0.01) | 0.11 (0.01) | 0.11 (0.01) |
| Esophageal Transit Time seconds | 0.90 (0.31) | 0.75 (0.12) | 0.71 (0.11) | 0.86 (0.23) | 0.85 (0.17) | 0.81 (0.13) | 0.89 (0.27) | 0.83 (0.19) |
| Esophageal Swallow Inhibition percentage | 36.0 (27.0) | 22.0 (23.0) | 8.0 (14.0) | 15.0 (18.0) | 32.0 (25.0) | 27.0 (21.0) | 32.0 (30.0) | 25.0 (27.0) |
Note: VFSS = Videofluoroscopic Swalow Study; S = Sham; T = Transection; DPS = Days Post-Surgery; WPS = Weeks Post-Surgery; VFSS metric values represent the mean (standard deviation).