Table 2 Comparison of VFSS findings using barium sulfate and iohexol contrast agent.
Barium sulfate, median (IQR) | Iohexol, median (IQR) | p valuea | |
|---|---|---|---|
FDS score | |||
Total score | 31 (11.5–51.0) | 30 (10–46.3) | 0.056 |
Lip closure | 0 (0–0) | 0 (0–0) | 1.000 |
Bolus formation | 0 (0–3) | 0 (0–3) | 1.000 |
Residue in oral cavity | 0 (0–2) | 0 (0–2) | 1.000 |
Oral transit time | 0 (0–6) | 0 (0–6) | 0.317 |
Triggering of pharyngeal swallow | 10 (0–10) | 10 (0–10) | 1.000 |
Laryngeal elevation and normal epiglottic closure | 0 (0–12) | 0 (0–12) | 0.655 |
Nasal penetration | 4 (0–4) | 4 (0–4) | 0.180 |
Residue in valleculae | 4 (4–8) | 4 (0–8) | 0.078 |
Residue in pyriform sinuses | 4 (0–8) | 4 (0–4) | 0.039* |
Coating of pharyngeal wall after swallow | 0 (0–0) | 0 (0–0) | 0.180 |
Pharyngeal transit time | 4 (0–4) | 4 (0–4) | 0.655 |
PAS score | 3 (1–6) | 3 (1–5) | 0.162 |
Number of swallows to eliminate contrast from pharyngeal space | 6 (3.75–10) | 4 (2.75–6) | 0.005* |
