Repeat Swallow Evaluation is Indicated for Persistent Dysphagia
A patient who had a swallow evaluation months ago and continues to have dysphagia and sialorrhea should undergo repeat instrumental swallow evaluation (FEES or videofluoroscopic swallow study) to reassess swallowing function and adjust management, as swallowing status changes over time and current diet restrictions may no longer be appropriate. 1, 2
Why Repeat Evaluation is Critical
The evidence strongly supports that swallowing function is dynamic, not static. A study of 952 skilled nursing facility residents showed that instrumental swallow evaluations frequently result in liberalization of diet restrictions: 76% of patients on non-oral nutrition were cleared for oral intake, 46% had liquid restrictions reduced, and 60% had food texture restrictions reduced after FEES evaluation 3. This demonstrates that many patients remain on unnecessarily restrictive diets when evaluations are not repeated.
Key point: Patients stuck on pureed diets for months without reassessment are likely being over-restricted, which significantly impacts quality of life.
The Multidisciplinary Approach Required
Once you obtain the repeat swallow study, management should involve 1:
- Speech-language pathologist (primary swallow therapist)
- Physician oversight
- Dietitian for nutritional optimization
- Nursing for monitoring aspiration risk
This is a Grade B recommendation with substantial benefit 1.
What the Repeat Study Should Accomplish
The instrumental evaluation (FEES or videofluoroscopic swallow study) serves multiple purposes 1, 2:
- Identify current aspiration risk - Has it improved, worsened, or remained stable?
- Test compensatory strategies - Chin tuck, head rotation, multiple swallows, etc.
- Trial different food textures and liquid consistencies - Test foods simulating a normal diet to determine what can be safely consumed
- Guide specific therapeutic interventions - Determine if swallow therapy exercises are appropriate
Addressing the Sialorrhea Component
The persistent sialorrhea (drooling) suggests either 4:
- Oro-motor dysfunction - Poor lip closure or tongue control
- Dysphagia-related - Inability to manage secretions
- Decreased central coordination
The swallow study will clarify if the sialorrhea is due to inability to swallow saliva (dysphagia-related) versus pure hypersalivation. If the patient cannot manage their own secretions on FEES/VFSS, this indicates significant aspiration risk and may require:
- Swallowing therapy programs to activate compensation mechanisms
- Pharmacologic management (glycopyrrolate) if true hypersalivation
- Botulinum toxin injection into salivary glands for refractory cases 4
Treatment Algorithm Based on Repeat Study Results
If the study shows improvement:
- Advance diet texture and liquid consistency as tolerated
- Continue swallow therapy with specific exercises (tongue strengthening, pharyngeal exercises)
- Consider neuromuscular electrical stimulation with swallowing therapy 5
If the study shows no change or worsening:
- Maintain or further restrict diet as needed for safety
- Intensify swallow therapy interventions
- Consider nutritional supplementation if oral intake inadequate
- For intractable aspiration, surgical intervention may be considered 1
Common Pitfall to Avoid
Do not rely on clinical swallow examination alone to determine if diet can be advanced. The evidence shows that clinical assessment frequently misclassifies dysphagia severity 6. A study of neurological ICU patients found that clinical assessment was often incorrect, and FEES was necessary to adequately adjust oral diet, which correlated with lower mortality and morbidity 6.
The bottom line: Months have passed since the last evaluation. Swallowing function changes. Get the repeat instrumental study now to optimize this patient's diet, quality of life, and safety.