Dysphagia — difficulty swallowing food, liquids or saliva safely and effectively — is one of the most underdiagnosed clinical conditions in the older population. Its impact goes far beyond discomfort when eating: scientific evidence associates it with malnutrition, dehydration, aspiration pneumonia and a significant deterioration in quality of life. This guide offers an updated and practical overview for healthcare professionals and families living with this reality.
Epidemiological studies show that oropharyngeal dysphagia affects between 27% and 40% of older adults living independently in the community, and that this figure can exceed 50% in residential and institutional settings (Baijens et al., 2016). In hospitalised patients aged over 70, prevalence can reach 47% according to recent series (Clavé & Shaker, 2015).
Despite these figures, dysphagia in older adults remains a silent condition. Many people do not report symptoms spontaneously, either because they attribute them to normal ageing, because they have developed unconscious adaptations (eating more slowly, avoiding certain foods), or because silent aspirations — passage of material into the airway without a cough reflex — produce no immediate symptoms but do cause respiratory complications in the medium term.
In Galicia, where population ageing is particularly pronounced, attention to dysphagia in older adults takes on particular relevance. Ourense, the most aged province in Spain, concentrates a high proportion of the population susceptible to presenting this condition.
The concept of oropharyngeal sarcopenia has transformed the understanding of age-related dysphagia. Just as general sarcopenia implies the progressive loss of skeletal muscle mass and function, oropharyngeal sarcopenia specifically affects the musculature involved in swallowing: the tongue, suprahyoid musculature, pharyngeal constrictors and upper oesophageal sphincter (Wirth et al., 2016).
The underlying mechanisms include:
Research by Clavé and colleagues at Mataró Hospital has demonstrated that oropharyngeal sarcopenia is a major contributing factor to dysphagia in older adults, exceeding even some neurological causes (Clavé et al., 2006). The encouraging news is that, unlike other structural causes, the sarcopenic component may respond to specific exercise and nutritional intervention.
Oropharyngeal sarcopenia represents a paradigm shift: dysphagia in older adults is not only a neurological symptom, but also a muscular condition potentially treatable with specific rehabilitation.
Early detection of dysphagia is essential to prevent serious complications such as aspiration pneumonia, which is one of the leading causes of mortality in institutionalised older adults. Validated and accessible screening tools are available for application in various care settings.
The EAT-10 is a self-administered 10-question questionnaire, validated in Spanish, that enables rapid detection of dysphagia risk (Belafsky et al., 2008; Burgos et al., 2012). Each item is scored from 0 to 4, with a maximum score of 40. A score of 3 or above suggests dysphagia risk and the need for more detailed clinical assessment.
Its main advantages are speed of administration (less than 2 minutes), the possibility of completion by the patient or carer, and its good sensitivity for detection in primary care and residential settings.
The V-VST, developed by Clavé and colleagues, is a clinical swallowing assessment method that systematically evaluates the safety and efficacy of swallowing using boluses of different volumes (5, 10 and 20 ml) and three viscosities (nectar, thin liquid and pudding) (Clavé et al., 2008). It is performed at the bedside and requires no radiological equipment.
During the test, the clinician observes signs of safety impairment (coughing, voice change, oxygen desaturation) and efficacy impairment (insufficient lip seal, oral or pharyngeal residue, fractioned swallow). The V-VST has a sensitivity greater than 83% and specificity close to 65% for detecting aspirations, compared with videofluoroscopy as the gold standard.
In cases where screening suggests dysphagia, instrumental evaluation by videofluoroscopy (VFS) or fibre-optic endoscopic evaluation of swallowing (FEES) may be indicated to directly visualise the swallowing mechanism and confirm the presence, type and severity of aspirations.
Adapting the texture of food and liquids is one of the most frequent and effective interventions in dysphagia management. The International Dysphagia Diet Standardisation Initiative (IDDSI) has established an international reference framework that classifies foods and liquids in standardised levels, replacing the heterogeneity of local terminology that generated confusion and errors (Cichero et al., 2017).
The IDDSI scale comprises:
Prescription of the appropriate IDDSI level must always be made by a qualified professional — speech-language therapist or rehabilitation physician — following an individualised assessment. Not all patients with dysphagia require the same texture, and excessive restriction can compromise caloric intake and satisfaction with eating.
For families and carers, IDDSI offers simple verification methods: the fork test (for solid foods) and the flow test with a syringe (for thickened liquids), which allow home checking that the prepared texture matches the prescribed level. These resources are freely available at iddsi.org.
Texture adaptation is a necessary compensatory measure, but specialist speech-language therapy rehabilitation goes further and addresses the functional cause of dysphagia. Evidence suggests that a swallowing rehabilitation programme can contribute to improving oropharyngeal muscle function, coordination of the swallowing mechanism and, ultimately, the safety of oral feeding (Easterling et al., 2005; Robbins et al., 2007).
The main speech-language therapy rehabilitation strategies include:
In older adults with reduced oropharyngeal sensitivity, techniques such as thermal-tactile stimulation, the use of acidic flavours or modification of bolus temperature can help facilitate the onset of the swallowing reflex. Recent studies have explored the use of capsaicin and TRPV1 receptor agonists as pharyngeal sensory stimulants with promising preliminary results (Rofes et al., 2014).
Early detection of dysphagia often begins in the family environment. It is important for carers and family members to know the signs that may indicate a swallowing problem and justify consulting a healthcare professional:
If you observe any of these signs in your elderly relative, do not attribute them to normal ageing. Consult your GP or a rehabilitation medicine service for a specific assessment.
At GNeuro, robotic neurorehabilitation clinic in Ourense, we have a multidisciplinary team including specialist speech-language therapy for swallowing, neurological physiotherapy and rehabilitation medicine. We understand that dysphagia in older adults rarely appears in isolation: it frequently coexists with other neurological conditions — previous strokes, cognitive decline, Parkinson's disease — or with frailty and generalised sarcopenia.
Our approach therefore integrates the assessment and treatment of dysphagia within a comprehensive neurorehabilitation plan that may include:
If you live with an older adult with diagnosed dysphagia, these general guidelines can contribute to safer eating. Remember that they must always be supervised and adapted by the responsible speech-language therapist or rehabilitation physician:
How can I tell if my elderly relative has dysphagia?
The most common signs include coughing or throat-clearing during or after meals, voice changes after swallowing (wet or gurgling voice), unintentional weight loss, recurrent respiratory infections and an increasing amount of time needed to finish a meal. The EAT-10 questionnaire is a validated screening tool that can help detect dysphagia risk. At the first sign of any of these, consult a healthcare professional for a specific assessment.
What is the IDDSI scale and how is it applied at home?
The International Dysphagia Diet Standardisation Initiative (IDDSI) is an international framework that classifies food and liquid textures into levels 0 to 7. Texture adaptation must always be prescribed by a speech-language therapist or rehabilitation physician following an individualised assessment. Once indicated, the family can learn to prepare foods according to the recommended level, using the flow test and fork test described by IDDSI to verify the correct texture.
Is it possible to improve dysphagia in older adults with rehabilitation?
Evidence suggests that specialist speech-language therapy rehabilitation can contribute to improving the safety and efficacy of swallowing in many older adults, especially when dysphagia has a functional component or is associated with oropharyngeal sarcopenia. Treatment typically includes oropharyngeal muscle-strengthening exercises, compensatory manoeuvres and texture adaptation, as part of an individualised programme supervised by a multidisciplinary team.
What is the relationship between sarcopenia and dysphagia in older adults?
Sarcopenia is the progressive loss of muscle mass and function associated with ageing. When it affects the musculature involved in swallowing (tongue, pharynx, suprahyoid muscles), it is called oropharyngeal sarcopenia — a relevant contributing factor to dysphagia in older adults. Evidence suggests that specific exercises for the swallowing musculature and adequate protein nutrition can contribute to improving swallowing function in this context.
At GNeuro we have specialist speech-language therapy for swallowing and a multidisciplinary neurorehabilitation team in Ourense. We can assess your case on an individual basis.
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