Table 3 Comparison of VFSS findings between patients with and without subsequent pneumonia during 3-month follow up period.

From: Usefulness of barium sulfate and iohexol as contrast agents for VFSS in visualizing components of swallowing predictable of poor outcomes

Parameter (n = 30)

Barium sulfate

Iohexol

Patients with subsequent pneumonia (n = 11), median (IQR)

Patients without subsequent pneumonia (n = 19), median (IQR)

p valuea

Patients with subsequent pneumonia (n = 11), median (IQR)

Patients without subsequent pneumonia (n = 19), medain (IQR)

p valuea

FDS score

Ā Total score

50 (18–57)

22 (10–46)

0.077

44 (20–49)

26 (4–42)

0.106

Ā Lip closure

0 (0–0)

0 (0–0)

0.609

0 (0–0)

0 (0–0)

0.609

Ā Bolus formation

0 (0–3)

0 (0–3)

0.292

0 (0–3)

0 (0–3)

0.292

Ā Residue in oral cavity

2 (0–2)

0 (0–2)

0.176

2 (0–2)

0 (0–2)

0.176

Ā Oral transit time

6 (0–6)

0 (0–6)

0.048*

6 (0–6)

0 (0–6)

0.128

Ā Ā Triggering of pharyngeal swallow

10 (10–10)

10 (0–10)

0.192

10 (10–10)

10 (0–10)

0.192

Ā Ā Laryngeal elevation and normal epiglottic closure

12 (0–12)

0 (0–12)

0.354

12 (0–12)

0 (0–12)

0.163

Ā Nasal penetration

4 (0–4)

4 (0–4)

0.759

4 (0–4)

0 (0–4)

0.269

Ā Residue in valleculae

8 (4–8)

4 (4–8)

0.173

4 (4–8)

4 (0–4)

0.126

Ā Ā Residue in pyriform sinuses

8 (4–8)

4 (0–8)

0.053

4 (0–8)

4 (0–4)

0.172

Ā Ā Coating of pharyngeal wall after swallow

0 (0–10)

0 (0–0)

0.093

0 (0–0)

0 (0–0)

0.447

Ā Ā Pharyngeal transit time

4 (0–4)

4 (0–4)

0.287

4 (0–4)

4 (0–4)

0.424

Ā PAS score

3 (1–7)

3 (1–6)

0.476

3 (2–7)

1 (1–3)

0.104

Ā Number of swallows to eliminate food and contrast from pharyngeal space

10 (6–10)

5 (2–7)

0.005*

5 (4–6)

4 (2–6)

0.102

  1. IQR interquartile range, FDS functional dysphagia scale, PAS penetration aspiration scale.
  2. ap-value was calculated by the Mann–Whitney test. *p < 0.05.