Article

OBJECTIVE: To quantitatively assess the movement of the hyoid bone and pyriform
sinus stasis in irradiated nasopharyngeal carcinoma (NPC) patients suffering from
dysphagia. DESIGN: Retrospective data analysis. SETTING: A tertiary teaching
hospital. PARTICIPANTS: NPC subjects (n=33, 25 men and 8 women) and healthy
subjects (n=10, 7 men and 3 women) participated in the study. INTERVENTION:
Videofluoroscopic swallowing study (VFSS) of all subjects. MAIN OUTCOME MEASURES:
The displacement and velocity of hyoid bone movement, the amount of pyriform
sinus stasis, and the widest opening distance of the cricopharyngeal muscle
during swallowing. RESULTS: The displacement of the hyoid bone in the NPC
patients was significantly less than that of the healthy subjects (1.58+/-0.59 vs
2.23+/-0.49 cm, P=.0033). The displacement of the hyoid bone was divided into
forward and vertical directions, and the forward displacement in the NPC patients
was found to be less than that of the healthy subjects (0.85+/-0.50 vs
1.65+/-0.51 cm), achieving statistic significance (P<.0001). The pyriform sinus
stasis of the NPC subjects was significantly more than that of the healthy
subjects (2.24+/-0.98 vs 0.30+/-0.17 cm(2), P<.0001). The movement velocity of
the NPC subjects was less than that of the healthy subjects (2.49+/-1.41 vs
5.10+/-0.85 cm/s, P=.0086). Furthermore, the NPC subjects with aspiration
experienced less displacement of the hyoid bone than those without aspiration
(1.23+/-0.45 vs 1.76+/-0.58 cm, P=.029). CONCLUSION: The irradiated NPC subjects
with dysphagia experienced a reduction in hyoid bone displacement, occurring in a
forward direction. The displacement of the hyoid bone was less in the aspiration
subjects than in those without aspiration.
CI - Copyright 2010 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS