Relationship between swallowing-related quality of life and fiberoptic endoscopic evaluation of swallowing in patients who underwent open partial horizontal laryngectomy

Several studies have previously analyzed the relationship between QOL and signs of dysphagia in patients treated for head and neck cancer and have reported heterogeneous findings. To the best of our knowledge, no study has previously investigated this relationship among patients who underwent open partial horizontal laryngectomy (OPHL). The aim of the study is to determine if patient-reported swallowing-related QOL can discriminate between safe and unsafe swallowing in OPHL patients. 92 type I, type II, and type III OPHL patients at least 6 months postoperatively were recruited. Fiberoptic endoscopic evaluation of swallowing (FEES) was conducted using liquids, semisolids, and solids. FEES recordings were assessed through the penetration-aspiration scale, the pooling score and the dysphagia outcome and severity scale. All patients completed the MD Anderson dysphagia inventory (MDADI). Kruskal-Wallis test and post-hoc Mann Whitney U test were performed to compare MDADI scores among different level of airway invasion, post-swallow pharyngeal residue's degree and overall dysphagia severity. ROC curves were generated to determine diagnostic accuracy of the MDADI. Statistically significant differences in MDADI scores were found between level of airway invasion with semisolids and solids, degree of pharyngeal residue with solids, and severity of dysphagia. MDADI showed significant diagnostic accuracy only in the detection of moderate/severe pharyngeal residue and severe dysphagia; however, sensitivity and specificity were low. Investigating patients' perception of swallowing impairment and swallowing-related QOL is not sufficient to discriminate safe and unsafe swallowing in OPHL patients.