Recovery (actual changes in brain)
____ _____ ____ showed during 3 months of recovery post CVA< changes occurred in undamaged hemisphere with no change in undamaged hemisphere (compensatory)
Possible recovery due to reorganization in ______ hemisphere
Transcranial magnetic stimulation
General goals: Safety first
2 (sometimes 3) goals?
Airway protection (prevention of aspiration through sensory awareness and proper bolus transit)
Quality of life (enjoyment of food)
*Oral hygiene priority--brushing, oral rinses
Dysphagia therapy: Remember overarching goals, safety and nutrition/hydration
What are compensatory strategies?
Redirect bolus flow (head turn, head tilt, chin tuck); Food/liquid modification (thickness, volume, texture); Swallow control (supraglottic)
Oral Strength Training Exercises
What are Type 1 fibers?
Type 1 (a&b)?
Slower to contract, fatigue resistant, aerobic (anterior tongue, tonically active--endurance)
Larger, more adept at force generation, easily fatigable (BOT), anaerobic (lifting a chair)
Uniquely adapted to multiple actions--muscles of mastication
Type ___ usually recruited first followed by type __ in volitional movements. Re-training can take ___ weeks. Re-training w/o energy can result in _____. Endurance exercise builds type ___, resistance exercises build type ___.
Muscle training basics
Motor map reorganization? (Does it occur?)
Nervous system activation
Morphologic changes w/in muscle tissue; fiber type shifts from type 1 to type 2; hypertrophy is enlargement of muscle fiber resulting in greater force generation
Decrease in strength after 4 weeks; bed rest, disuse, tube feeds; type 1 more prone to disuse
Noticeable in 60s; age related loss in muscle fibers; affects fast twitch type 2 fibers more than type 1
Elders maintain performance 5-31 weeks, 1x/wk results in strength and muscle size maintenance
Principles of Strength Training *FITT* Frequency, intensity, time, type
Neuromuscular system must be forced beyond usual activity to elicit change.
Intensity= ____- load, volume, duration of stimulus; ___% of 1 rep max; improvement in lingual strength and A-P (Aspiration-Penetration) scale using IOPI (Iowa Oral Pressure Instrument)
Expiratory muscle strength training (EMST)-- ___ stimulation to brain stem swallow centers via tongue/orpharynx sensory receptors and strengthening muscles of swallowing
Studies of skeletal muscles suggest 8-12 reps/set= ___ and ___; may be better for clients that demonstrate ____
6-8 reps/set= ___ with ___ ___; may be better for clients with generalized ____
Strength, endurance; fatigue
strength; greater power; weakness
What is specificity?
Not always possible with patients who are ___
Begin with ____ ____ then progress to more goal specific areas
What is transference?
Examples of exercises for this?
Task correspondence with targeted outcome
Cross training; drill--improving somatosensory processing and optimizing neuromuscular fringe patterns
Strength training may improve general force generating capacity; increase functional reserve; allow patient to participate one extended task specific exercise
Small sample size, few controlled (e.g. Robbins et al. 2008), Baseline and good data necessary, evince for use in head and neck cancer cases, must have rationale for tx (not to reduce coughing, but to increase coordination of swallow)
Evidence and Exercise
Traditional oral motor exercises lack ___ related to functional outcomes. Traditional OME's do not overload the system enough to produce change.
Skill vs. Strength
Strength with IOPI + accuracy--Try and reach x target
Functional changes seen?
What is isometric?
What is isokinetic?
Improved bolus position at swallow onset with thins, unchanged or improved valecular residue scores with thins, overall improved thin and thick liquid scores (bolus position at swallow onset, depth of airway invasion, vallecular residue, pyriform)
Push & hold
What is the McNeill Dysphagia Treatment Program?
Resistive tongue strengthening, tongue ROM, mandibular resistive, mandibular ROM
Bolus modification (volume, texture, placement)
Oral Strength Training Exercises
Derived from speech and voice studies
Labial Strength exercises?
Resistive exercise, flexibility/ROM
Therabite (mandibular), Iowa Oral Performance Instrument--apply resistance to tongue bulb, maintenance of pressure, visual feedback
Madison Oral Strengthening Therapeutic Device (MOST)--measures pressure generation via custom mouthpiece, calculates target, feedback
Lack of evidence but seen in clinical practice cloth or gauze around straw or sucker, move side to side. Client practices chewing and oral bolus movement. May infuse gauze with different tastes to stimulate more movement
Tongue base (No evidence)--what might you see in practice?
Vocal fold/laryngeal elevation
Pull tongue straight back on mouth, yawn and hold most retracted position, gargling, holding most retracted position
LSVT, some evidence of improved oral and pharyngeal transit times
Component 6: Initiation of pharyngeal swallow
Hold bolus, tongue to palatal seal, sensory stimulation plus tongue movement, taste enhancement
Tongue resistance exercise, tongue ROM
Bolus modifications (volume, texture, placement)
Use in delay in ___ onset
Delay in triggering of ____ swallow
Alert CNS to presence of bolus and need to swallow; elicit faster ora and pharyngeal swallow
Carbonated beverage--how much, assess what?
Sour bolus--what and assess what?
3 mL; assess speed of swallow, follow with 4-5 regular liquid swallows monitoring speed
½ lemon juice + ½ water or barium; assess speed of swallow then provide 4-5 swallow of regular liquid
Crushed potato chips to barium pudding, crackers to pudding or mashed potatoes
limited evidence but used in clinical practice. Heighten __ awareness and present altering stimulus to brainstem resulting in faster pharyngeal trigger. Rub double sided laryngeal mirror against ___ ___ ___ 4-5 times; Assess ___ of swallow and repeat when swallow slows; Effects not long lasting. Cold water bolus may have effect
anterior faucial arch
7. Soft palate elevation
Obturator, compensatory--bolus modification (volume and texture)
Prosthetic management Palatal lowering prostheses
Decrease volume of __ cavity. Improve bolus ___. Increase ___-___ pressures. Team members? Surgical obturator for trial, removed and modified, permanent or semi permanent
Soft palate prosthesis
Resotre __-___ contact; improves oral __ and oral phases of swallow. Maintain maximal ___ control. May include __ exercises. Use in ___
Oral. transit. tongue-palate. Prosthodontist and SLP.
tongue-palate. prep. bolus. BOT. VPI.
8. Laryngeal Elevation
Pharyngeal contraction exercise--swallow and squeeze, super-supraglottic swallow
Increased consistencies=Increased resistance
9. Anterior hyolaryngeal elevation
Suprahyoid strengthening, sustained hyolaryngeal movement at height of swallow, shaker exercise, expiratory muscle strength training, Mendelsohn maneuver
Focus on ___ _____.
2 parts--3x/day x 6 weeks.
Explain the exercise.
Three traditional improvements?
ABD, mylohyoid, geniohyoid
Sustained head raise for 60 seconds followed by 60 seconds of rest (isometric)
Increased superior laryngeal movement with paste
Increased superior hyoid movement with paste
Increased anterior laryngeal movement with liquids
pharyngeal contraction exercise, swallow and squeeze
13. pharyngeal contraction
Pharyngeal contraction exercise-swallow and squeeze
Bolus modification (volume, texture)
14. PES opening
Auditory feedback (auscultation)
Suprahyoid strengthening & ROM (shaker), sustained hyolaryngeal movement (mendelsohn), pharyngeal contraction exercise
Bolus modification (volume, texture)
15. Tongue base retraction
Swallow and squeeze
Tongue hold-Masako maneuver (stick tongue out hold and swallow), pharyngeal contraction exercise (swallow squeeze)
Bolus modification (texture, volume)
Masako Maneuver/tongue hold
Strengthen _____ muscle that moves BOT backward during swallow
Not done with ____ or ____
Evidence supporting use in post surgical oral or lingual cancer patients
Follows principles of muscle training by applying load to system
Hold front ⅓ tongue between teeth and swallow, feel pull of muscles n pharynx, feel slight pharyngeal swallow delay
16. Pharyngeal residue
Depends on cause. Compensatory?
Designed to improve voice and speech in patients with ___
Intense, high-effort targeting respiratory support and vocal fold adduction
Positive changes in post treatment VFSS. Habituation of increased effort, increased recruitment of supra hyoid and laryngal muscles
May include food/liquid bolus
Practice swallowing techniques and maneuvers
Swallow maneuvers: Improved tongue base pressures and duration of PPW contact in patients post=surgery or radiation due to H&N cancer
Can safely swallow small amounts of food or liquid
Supraglottic Swallow Close vocal folds ___ and ___ swallow 3 steps?
Take deep breath and hold, keep holding breath while swallow, immediately after swallow cough/clear throat
Close airway entrance by tilting arytenoid carriages toward base of ____ before and ___ swallow.
Improve ___ retraction. Can be used as exercise.
INhale and hold breath very tightly, bearing down
Keep holding breath as swallow, immediately after swallow, cough
Squeezes hard with tongue as you swallow
Follows principles of motor training by using max effort
Increase effort with ___ bolus
Increased __-___ pressure
Increase tongue base/pharyngeal wall pressure
Sustain elevation of larynx during swallow
August ____ opening
Follows principles of motor training--maximal effort although load cannot be manipulated over time
Swallow and feel throat for something that lifts. Now feel elevation during swallow, when reaches its height of elevation, hold it up with muscles for many scones then relax.
Variable results pt to pt
Consider fatigue, attention, environ distractions
Head back, chin down, head rotation, chin down plus head rotation, side lying, head tilt to stronger side
Aspiration on thin liquids, unimproved by postural techniques. Determine thinnest texture tolerated--FOLLOW UP!!
(Hydration) Nectar, honey, pudding-98% absorbed like water
Powdered thickener, gel thickener
National Dysphagia Diet
Developed by panel of dietitians, SLPs, food scientist
Classifies foods according to 8 textural properties. Anchor foods represent point along continua for each property. 4 levels of semisolid/solid foods proposed
Level 1: ??
Level 2: ??
Level 3: ??
Pureed (pudding-like, very little chewing)
Mechanical Altered (semisolid, requiring some chewing)