Abstract
The aim of this study was to evaluate the association between trismus and other radiation-associated conditions with dysphagia-related quality of life in patients who have undergone radiotherapy of the head and neck. This cross-sectional study included 88 patients who had squamous cell carcinoma of the oral cavity, oropharynx, hypopharynx, or larynx and had been treated with 3-dimensional (3-D) conformal radiotherapy, which had been completed at least 3 months earlier. Clinical data were obtained from medical records. Trismus, hyposalivation, and radiation caries were evaluated clinically. Dysphagia-related quality of life (DRQoL) was investigated by using the M. D. Anderson Dysphagia Inventory (MDADI). Binary logistic regression was performed to determine associations between DRQoL and both demographic and clinical variables. The mean total MDADI score was 67.33 ± 15.47, and the physical domain was the most affected (60.28 ± 19.00). Patients with cancer of the mouth and oropharynx had worse scores (P = .001). Trismus was associated with poorer DRQoL in all domains of the MDADI (P = .001) and with a greater chance of moderate to profound swallowing limitation (P = .024). Trismus and tumors located in the mouth and oropharynx were associated with poor swallowing function, exerting a negative impact on DRQoL.
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