Intensive, prophylactic swallowing therapy programs have been developed to improve dysphagia outcomes for patients with head/neck cancer (HNC) receiving (chemo)radiotherapy ([C]RT). Across studies, variable therapy adherence rates have been reported. Preliminary research suggests that service-delivery mode and demographic factors may influence adherence. This study examined patient adherence to a prophylactic swallowing therapy protocol across three service-delivery models: (1) clinician-directed face-to-face therapy, (2) technology-assisted therapy using the telepractice application, SwallowIT and (3) independent patient-directed therapy. The secondary aim explored the impact of patient factors on adherence. Patients with oropharyngeal HNC receiving definitive (C)RT were randomised to receive the Pharyngocise exercise protocol via clinician-directed (n = 26), patient-directed (n = 27) or SwallowIT-assisted (n = 26) models. Adherence was calculated as the percentage of prescribed exercise completed. Multiple patient factors were recorded at baseline. Adherence across the 6 weeks in all groups was low (27%), and declined from week 4 of (C)RT. The clinician-directed model yielded significantly (p = 0.014) better adherence than patient-directed therapy in weeks 1-3. There was also a trend for higher adherence in the SwallowIT group compared to patient-directed in weeks 1-3 (p = 0.064). Multivariable linear modelling identified active smoking at baseline (p < 0.001) and concomitant chemotherapy (p = 0.040) as significant negative predictors of adherence, with baseline reduced motivation trending towards significance. Although (C)RT-related toxicities will impact adherence, adopting service-delivery models with greater structure/support and providing extra assistance to patients with known risk factors may help optimise therapy adherence to prophylactic therapy programs. Telepractice may provide an alternate model to support adherence where service constraints limit intensive clinician-directed therapy.

Emerging research suggests that preventative swallowing rehabilitation, undertaken pre-or during (chemo)radiotherapy ([C]RT), can significantly improve early swallowing outcomes for head and neck cancer (HNC) patients. However, these treatment protocols are highly variable. Determining specific physiological swallowing parameters which are most likely to be impacted post-(C)RT would assist in refining clear targets for preventative rehabilitation.Therefore, this systematic review (1) examined the frequency and prevalence of physiological swallowing deficits observed post-(C)RT for HNC, and (2) determined the patterns of prevalence of these key physiological deficits over time post-treatment. Online databases were searched for relevant papers published between January 1998 and March 2013. In total, 153 papers were identified and appraised for methodological quality and suitability based on exclusionary criteria. Ultimately, nineteen publications met the study's inclusion criteria.Collation of reported prevalence of physiological swallowing deficits revealed reduced laryngeal excursion, base of tongue (BOT) dysfunction, reduced pharyngeal contraction and impaired epiglottic movement as most frequently reported. BOT dysfunction and impaired epiglottic movement showed a collective prevalence of over 75% in the majority of patient cohorts, whilst reduced laryngeal elevation and pharyngeal contraction had a prevalence of over 50%. Sub-analysis suggested a trend that the prevalence of key deficits is dynamic although persistent over time. These findings can be used by clinicians to inform preventative intervention, and support the use of specific, evidence-based therapy tasks explicitly selected to target the highly prevalent deficits post-(C)RT for HNC.