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Dysphagia research

Everything we have read on dysphagia. Each paper is summarised from the full article rather than its abstract, so the limitations are in there too, and the funding wherever the paper declares it.

715 PAPERS · PAGE 3 OF 15 · NEWEST FIRST

• SLPOther2019Construct validity of the Eating Assessment Tool (EAT-10).Disability and rehabilitationThe EAT-10 mostly reflects one swallowing-symptom pattern and patients use its 0-4 ratings as expected, but two items did not behave as expected and scores correlate only weakly with aspiration and diet findings. Use it for patient-reported symptoms, not to replace swallow testing.
• SLPCase Report2018New Swallowing Method to Improve Pharyngeal Passage of a Bolus by Creating Negative Pressure in the Esophagus-Vacuum Swallowing.American journal of physical medicine & rehabilitationA man with severe swallowing problems after a stroke found that forcefully contracting abdominal muscles while elevating shoulders helped swallow. Tests showed bolus sucked into esophagus by negative pressure despite weak pharynx. His oral intake improved, but a case report cannot show it works.
• SLPPilot2019Detection of Swallow Kinematic Events From Acoustic High-Resolution Cervical Auscultation Signals in Patients With Stroke.Archives of physical medicine and rehabilitationIn 35 stroke patients, several neck microphone features peaked within 0.1 seconds of key swallow X-ray events in at least 60% of swallows. The study found timing links, not proof that the device diagnoses aspiration.
• SLPCase Series2018Effect of orbicularis oris muscle training on muscle strength and lip closure function in patients with stroke and swallowing disorder.Journal of physical therapy scienceIn 10 stroke patients, orbicularis oris training added to traditional rehabilitation (sensory stimulation and muscle strengthening) was associated with increased lip strength and better lip closure. Because both were given, the training's separate effect cannot be known.
• SLPPilot2018Double Blind Study Investigating the Effect of Different Voice Prostheses on Ease of Swallowing and Residue Post Laryngectomy.DysphagiaNeither patients nor experts consistently identified one best voice prosthesis for swallowing. Experts did find less residue with the Blom Singer Classic Indwelling on thin liquids and the Provox Vega on soft foods, but patient ratings showed no difference between devices.
• SLPOther2018Oropharyngeal swallowing function in patients with presbyphagia.Journal of physical therapy scienceOlder adults with age-related swallowing difficulty had swallowing study score values of pharyngeal wall coating 5.2 ± 3.44 and aspiration 3.60 ± 3.04. The study only described scores, not treatment effects.
• SLPOther2018Maturation of the Coordination Between Respiration and Deglutition with and Without Recurrent Laryngeal Nerve Lesion in an Animal Model.DysphagiaIn infant pigs, the delay between a swallow and the next breath grew from day 7 to day 17. Pigs with a recurrent laryngeal nerve lesion showed a larger age-related change, but the lesion alone did not shift timing.
• SLPPilot2018Neural Mechanisms of Swallowing Dysfunction and Apraxia of Speech in Acute Stroke.DysphagiaFailing an aspiration screen and apraxia of speech were linked in 68 acute left hemisphere stroke patients. Broca area lesions were linked to both, but the deficits rarely occurred together, so one does not predict the other.
• SLPOther2019Do Ratings of Swallowing Function Differ by Videofluoroscopic Rate? An Exploratory Analysis in Patients After Acute Stroke.Archives of physical medicine and rehabilitationRating swallowing videos at a lower frame rate changed how clinicians scored impairment compared to the standard rate. Some measures looked worse at the slower rate, while others looked better. This suggests lower frame rates may distort clinical judgment of swallowing function.
• SLPOther2018Swallow Event Sequencing: Comparing Healthy Older and Younger Adults.DysphagiaHealthy older adults showed less variation in the order of swallow events than healthy young adults, and some timing differences appeared. These are healthy norms, not evidence that aging causes a swallowing disorder.
• SLPOther2018Pink1 -/- Rats Show Early-Onset Swallowing Deficits and Correlative Brainstem Pathology.DysphagiaRats with a Parkinson-related gene deletion swallowed larger boluses and moved them faster through the throat than normal rats. Chewing slowed with age but did not differ between groups. These are rat findings, not human swallowing evidence.
• SLPCase-Control2018Lingual and Jaw Kinematic Abnormalities Precede Speech and Swallowing Impairments in ALS.DysphagiaPeople with ALS who had no speech or swallowing symptoms moved their tongue differently during water drinking than controls. Their posterior tongue moved less and more slowly, and their jaw moved more and faster.
• SLPCohort2018Coordination of Pharyngeal and Laryngeal Swallowing Events During Single Liquid Swallows After Oral Endotracheal Intubation for Patients with Acute Respiratory Distress Syndrome.DysphagiaIn 11 ARDS patients after intubation, the time the larynx stayed closed was unchanged compared with healthy volunteers, but time to close the larynx was longer and the whole swallow took longer; only one aspirated.
• SLPOther2018Comparison of orbicularis oris muscle strength and endurance in young and elderly adults.Journal of physical therapy scienceOlder adults pressed their lips to 9.3 kPa on the pressure sensor and held for 13.3 seconds, compared with 15.5 kPa and 38.5 seconds in young adults. Reduced lip closure may matter for swallowing, but the study measured healthy people.
• SLPCohort2019Medically Unexplained Oropharyngeal Dysphagia at the University Hospital ENT Outpatient Clinic for Dysphagia: A Cross-Sectional Cohort Study.DysphagiaIn 14 adults with swallowing complaints but no detectible abnormality on swallowing examination, 6 had clinically relevant anxiety and 3 had depression. Self-rated swallowing severity did not match these symptoms. Ask about anxiety and depression in these patients.
• SLPOther2019Establishing a Multidisciplinary Head and Neck Clinical Pathway: An Implementation Evaluation and Audit of Dysphagia-Related Services and Outcomes.DysphagiaA head and neck cancer pathway kept speech and dietetic appointments running, and swallowing outcomes mostly matched a prior research cohort. Complexity was the main staff barrier; the audit cannot show the pathway caused outcomes.
• SLPOther2019Characterizing the Flow of Thickened Barium and Non-barium Liquid Recipes Using the IDDSI Flow Test.DysphagiaTested barium recipes could be made to match IDDSI slightly to moderately thick levels and stay stable over time, but adding barium often thickened liquids more than the same non-barium recipe.
• SLPOther2019Assessing Hyolaryngeal Excursion: Comparing Quantitative Methods to Palpation at the Bedside and Visualization During Videofluoroscopy.DysphagiaBedside palpation judgments of reduced versus normal hyoid movement differed by measured forward position only, and videofluoroscopy judgments did not differ by any measured position.
• SLPNarrative Review2019"Hidden in Plain Sight": A Descriptive Review of Laryngeal Vestibule Closure.DysphagiaThis paper reviews the physiology of laryngeal vestibule closure (LVC) and how it is measured. It does not present new patient data or test interventions, so there are no findings to change practice.
• SLPOther2019Volumetric Changes to the Pharynx in Healthy Aging: Consequence for Pharyngeal Swallow Mechanics and Function.DysphagiaIn healthy adults over 65, larger pharyngeal lumen volume was associated with worse pharyngeal constriction and more vallecular residue. Age and sex did not add to these differences, but stronger posterior tongue was linked to more pharyngeal shortening.
• SLPCohort2019Repetitive Saliva Swallowing Test: Norms, Clinical Relevance and the Impact of Saliva Secretion.DysphagiaSaliva-swallow counts varied by age and gender, not dry mouth or medicines. In stroke patients, the test flagged 69% of SSA-S risk cases, so a normal score cannot rule out swallowing problems.
• SLPOther2019Effect of electrical stimulation on aspiration in children with cerebral palsy and dysphagia.Journal of physical therapy scienceLower penetration-aspiration scores were reported after four weeks of submental electrical stimulation in five children with cerebral palsy and dysphagia. The study had no control group, so the score change cannot be treated as proof the stimulation caused it.
• SLPCohort2019Swallow Screen Associated With Airway Protection and Dysphagia After Acute Stroke.Archives of physical medicine and rehabilitationA nurse-administered 3-oz water screen missed many swallowing problems in 48 acute stroke patients: 15 of 35 who passed still had dysphagia on fluoroscopy. Failed screens were associated with airway protection impairment, but passing did not rule out dysphagia.
• SLPQualitative2019SLP-Perceived Technical and Patient-Centered Factors Associated with Pharyngeal High-Resolution Manometry.DysphagiaSLPs saw pharyngeal manometry as an objective add-on to videofluoroscopy or FEES, especially for unclear cases, treatment planning, progress tracking, and biofeedback. They disagreed on which patients should get it and when.
• SLPOther2019A Novel Three-Dimensional Analysis of Tongue Movement During Water and Saliva Deglutition: A Preliminary Study on Swallowing Patterns.DysphagiaHealthy adults moved the back of the tongue more than the front up and down when swallowing saliva or water. Larger water volumes produced wider tongue movement on the up-down and front-back axes. Side-to-side motion changed little.
• SLPCohort2019A Comparative Analysis of Eating Behavior of School-Aged Children with Eosinophilic Esophagitis and Their Caregivers' Quality of Life: Perspectives of Caregivers.DysphagiaCaregivers of school-aged children with eosinophilic esophagitis did not report different eating behaviors than controls. However, they experienced significantly higher worry about choking and greater difficulty managing mealtimes, reducing their own quality of life.
• SLPCohort2019Relationship Between Laryngeal Sensation, Length of Intubation, and Aspiration in Patients with Acute Respiratory Failure.DysphagiaAbsent laryngeal reflex after extubation was associated with aspiration, especially in patients with shorter ventilation. It was not associated with pneumonia. The study reports association, not cause.
• SLPRCT2019The Effects of Electrical Stimulation Pulse Duration on Lingual Palatal Pressure Measures During Swallowing in Healthy Older Adults.DysphagiaShort-pulse electrical stimulation in healthy older adults lowered peak tongue pressure and tongue pressure area during swallowing compared with no stimulation and long-pulse stimulation. Pressure timing did not change. Participants tolerated higher current with short pulses without more discomfort.
• SLPOther2019Modulation of Tongue Pressure According to Liquid Flow Properties in Healthy Swallowing.Journal of speech, language, and hearing research : JSLHRHealthy adults pressed harder and faster on the palate as liquids became thicker, and they took smaller sips. At the low barium concentration used, barium-containing liquids did not change tongue pressure compared with nonbarium liquids.
• SLPOther2019Reference Values for Healthy Swallowing Across the Range From Thin to Extremely Thick Liquids.Journal of speech, language, and hearing research : JSLHRHealthy adults under 60 usually swallowed each bolus once, with little residue. Thin liquids had the most penetration, and thicker liquids changed sip size and timing. These values are for comparison, not treatment evidence.
• SLPCohort2019An Investigation of Factors Related to Food Intake Ability and Swallowing Difficulty After Surgery for Thoracic Esophageal Cancer.DysphagiaIn 32 patients, vocal cord paralysis after thoracic esophageal cancer surgery did not show a relation to inability to ingest food. Cervical lymph node dissection was associated with inability to ingest food on postoperative day 7.
• SLPNarrative Review2019Management of Dysphagia in Acquired and Progressive Neurologic Conditions.Seminars in speech and languagePatients with progressive neurologic disease often under-report swallowing problems because sensory perception degrades. Clinicians should rely on imaging rather than patient self-report, and verify any compensatory maneuvers or diet changes with instrumented evaluation.
• SLPRCT2019Pediatric Prolonged-Release Melatonin for Sleep in Children with Autism Spectrum Disorder: Impact on Child Behavior and Caregiver's Quality of Life.Journal of autism and developmental disordersChildren with autism and poor sleep who took prolonged-release melatonin had fewer outward-directed behavior problems than children taking placebo after 13 weeks, and caregivers reported better wellbeing. Social withdrawal and anxiety did not change clearly in the whole group.
• SLPNarrative Review2019Community service speech language therapists practising in adult dysphagia: Is the healthcare system failing them?The South African journal of communication disorders = Die Suid-Afrikaanse tydskrif vir KommunikasieafwykingsNew speech-language therapists in South Africa often feel underprepared to manage adult dysphagia independently due to limited training and lack of supervision. The article argues that mandatory mentorship and accessible continuing education are needed to support these junior clinicians.
• SLPCohort2019Development and validation of a screening tool for feeding/swallowing difficulties and undernutrition in children with cerebral palsy.Developmental medicine and child neurologyA four-question parent questionnaire identified 48% of children with cerebral palsy at risk for feeding issues or undernutrition. It caught all severe cases. Use these questions to decide who needs a full speech pathology or dietetic assessment.
• SLPNarrative Review2020Development of Excised Larynx.Journal of voice : official journal of the Voice FoundationThis review summarizes how excised larynx models clarify voice mechanics. It reports that freezing causes 5% geometric distortion. It notes that vocal fold disorders raise the minimum power needed for phonation. These findings explain laboratory mechanisms but do not prove clinical treatment effects.
• SLPPilot2019Laryngeal Vibration Increases Spontaneous Swallowing Rates in Chronic Oropharyngeal Dysphagia: A Proof-of-Principle Pilot Study.DysphagiaNeck vibration at 70 Hz and 110 Hz raised spontaneous swallowing rates versus sham in 13 participants with chronic dysphagia. It did not speed voluntary swallow initiation, and the increase did not persist when vibration stopped.
• SLPOther2019Development of a Non-invasive Device for Swallow Screening in Patients at Risk of Oropharyngeal Dysphagia: Results from a Prospective Exploratory Study.DysphagiaA neck sensor device detected unsafe swallows on thin liquids with high sensitivity, missing only 10% of cases. It over-detected risk in 40% of patients. This device is not yet validated for clinical use and cannot replace a standard swallowing assessment.
• OTSLPRCT2019The effect of intensified nonverbal facilitation of swallowing on dysphagia after severe acquired brain injury: A randomised controlled pilot study.NeuroRehabilitationIntensified nonverbal facilitation of swallowing was feasible but did not significantly improve clinical swallowing scores compared to control. The intervention group showed positive changes in laryngeal elevation speed and maximum elevation during treatment, while the control group worsened on these measures.
• SLPOther2019A Device that Models Human Swallowing.DysphagiaA throat model measured how fast and how much pressure a thickened bolus produced as it moved through a model pharynx. It showed flow and pressure patterns similar to reported swallowing ranges. This is device validation, not patient evidence.
• PTOTSLPCohort2019Relationship between the nutritional state of elderly people in need of support or nursing care and jaw-opening force and tongue pressure.Journal of physical therapy scienceBetter nutritional scores correlated with stronger jaw-opening force in 25 care-dependent elders, but not with tongue pressure. Low jaw force may signal malnutrition risk, though the small sample limits certainty.
• SLPOther2020Association Between Pharyngeal Pooling and Aspiration Using Fiberoptic Endoscopic Evaluation of Swallowing in Head and Neck Cancer Patients with Dysphagia.DysphagiaSevere pooling in the pyriform sinuses and valleculae after swallowing thick liquids was linked to aspiration, even when no aspiration was seen during the exam. Mild-to-moderate pooling showed no such link. These findings suggest pooling severity may help estimate aspiration risk.
• SLPOther2019Simultaneous Radiological and Fiberendoscopic Evaluation of Swallowing ("SIRFES") in Patients After Surgery of Oropharyngeal/Laryngeal Cancer and Postoperative Dysphagia.DysphagiaAfter head and neck cancer surgery and radiotherapy, FEES and VFSS done together gave different swallowing scores. VFSS detected aspiration missed by FEES in 16 of 202 swallows; FEES scored more residue.
• SLPOther2019Effects of Motor Imagery and Visual Neurofeedback on Activation in the Swallowing Network: A Real-Time fMRI Study.DysphagiaHealthy adults increased swallowing-related brain activity using real-time fMRI feedback while imagining swallowing. The feedback group showed higher activation than the offline imagery group. This confirms the mechanism works in healthy brains, but the study tested no patients and measured no swallowing function.
• SLPCohort2019Vocal Fold Paralysis/Paresis as a Marker for Poor Swallowing Outcomes After Thoracic Surgery Procedures.DysphagiaVocal fold paresis or paralysis was coded in 0.55% of thoracic surgery discharges. Those discharges had more swallowing complications, feeding tubes, tracheostomy, longer stays, and higher costs, but only 18.1% had ENT/SLP services.
• SLPOther2019Radiation Risks to Adult Patients Undergoing Modified Barium Swallow Studies.DysphagiaA full protocol modified barium swallow study delivered a median total effective dose of 0.27 mSv. Thyroid dose was 1.7 mGy, and estimated cancer risk was 11 per million for 20-year-old men and 32 per million for 20-year-old women.
• SLPOther2019Assessment of the Food-Swallowing Process Using Bolus Visualisation and Manometry Simultaneously in a Device that Models Human Swallowing.DysphagiaIn a throat-shaped machine, thicker liquids moved more slowly, had lower wall shear rates, and produced higher pressures than thinner liquids. This is device testing, not patient evidence, so it cannot show what happens when someone swallows.
• SLPOther2020The Prediction of Risk of Penetration-Aspiration Via Hyoid Bone Displacement Features.DysphagiaA measure of how far the hyoid bone moves forward during swallowing was associated with disordered penetration-aspiration scores. Older age and thin liquids also raised risk. This was a preliminary risk calculation, not yet a clinical tool.
• SLPOther2020BaByVFSSImP© A Novel Measurement Tool for Videofluoroscopic Assessment of Swallowing Impairment in Bottle-Fed Babies: Establishing a Standard.DysphagiaA new scoring system for baby swallow studies grouped 21 components into five domains. Scores for airway closure and aspiration strongly matched how much liquid entered the airway. These physiology scores also aligned with clinicians' feeding recommendations, though not with caregiver stress.
• SLPOther2020Predictors of Residue and Airway Invasion in Parkinson's Disease.DysphagiaIn people with Parkinson’s disease being considered for deep brain stimulation, disease severity did not predict swallowing residue or airway invasion. Reduced pharyngeal constriction and delayed airway closure were linked to these problems, and the links varied by swallow condition.