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Transcript of Resonance Disorders and VP Dysfunction - Cook … Evaluation and Treatment: Resonance Disorders and...
![Page 1: Resonance Disorders and VP Dysfunction - Cook … Evaluation and Treatment: Resonance Disorders and VP Dysfunction Evaluation and Treatment • Evaluation of VPD – Perceptual evaluation](https://reader031.fdocuments.net/reader031/viewer/2022022009/5aee1bac7f8b9ac57a8b7a51/html5/thumbnails/1.jpg)
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Evaluation and Treatment:Resonance Disorders and VP Dysfunction
Evaluation and Treatment
• Evaluation of VPD– Perceptual evaluation
– Intra-oral evaluation
– Instrumental evaluation
• Treatment of VPIo Surgical procedures
o Prosthetic devices
• Speech therapy• Referrals
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Perceptual Evaluation
When, What, How, and Why
• When the evaluation should be done for the most reliable results and maximum benefit for the patient
• What to assess
• How to do a perceptual evaluation using simple “low-tech” and “no-tech” procedures
• Why the speech evaluation is needed to make appropriate management decisions
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When?
Evaluation of VP Function
• Child needs to have…
– connected speech
– ability to cooperate for stimulability testing and instrumental assessment
– adequate airway with no recent airway concerns
• Usually around the age of 3
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Caveat: Don’t wait too long!
• Critical period of brain development and speech/language learning
• Consequences of waiting too long
– Correction will take longer
– Prognosis is negatively affected
– Can affect social and emotional development
What?
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What to Evaluate
• Speech sound production
• Airflow/air pressure and presence of nasal emission
• Resonance
• Voice (phonation)
Speech Sound Production
• Placement errors
• Phonological (pattern) errors
• Developmental errors
• Obligatory distortions or compensatory errors
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Obligatory Distortions
Placement is correct, but structure is abnormal
• Nasalization of oral phonemes (m/b, n/d, ng/g)
• Nasal emission
– Weak or omitted consonants
– Short utterance length
Compensatory Errors
Placement is incorrect in response to abnormal structure
• Glottal stops
• Pharyngeal plosives
• Pharyngeal fricatives
Note: These misarticulations can also be due to mislearning in the absence of VPI
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Nasal Emission
• Characteristics of a large gap versus small gap
Nasal Emission- Large Gap
• Nasal emission that is barely audible or even inaudible
• Nasal emission causes:
– Weak or omitted consonants
– Short utterance length
– Nasal grimace
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Nasal Emission- Small Gap
• Usually in the form of a nasal rustle
Note: Nasal rustle can also be due to a misarticulation which causes phoneme-specific nasal air emission
Nasal RustleCan be structural or functional
Structural Defect
• Occurs inconsistently,
but on all pressure
sounds, including /p/, /t/
and /k/
Functional Error
• Occurs consistently, but only
on certain sibilants (i.e. s/z)
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Resonance
Need to determine the type:
• Normal resonance
– right balance of oral and nasal resonance
• Hypernasality
• Hyponasality
• Cul de sac resonance
• Mixed resonance
Resonance Severity
Types of rating scales:
• Seven point scale
• Normal, mild, moderate, severe
• Present or absent
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Resonance Severity
• Severity does not affect treatment plans
• If there is hypernasality due to VPI (mild, moderate or severe)… surgical management is the only way to correct it
Phonation
Evaluate for signs of dysphonia:
• Hoarseness
• Breathiness
• Low or high pitch
• Low intensity
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How?
Speech Samples
• Single word articulation test…NOT good!!!
• Kids don’t communicate in single words
• Speech breaks down in connected speech
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Speech Samples
• Prolongation of sounds
• Repetition of syllables
• Counting
• Repetition of sentences with pressure-sensitive consonants
• Connected speech
Repetition of Single Sounds
• Oral sound to test hypernasality:
– vowels, particularly /ɑ/ (as in “father”) and /i/ (as in “heat”)
• Oral sounds to test nasal emission:
– prolonged /s/
• Nasal sound to test hyponasality:
– prolonged /m/
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Repetition of Syllables
• pɑ, pɑ, pɑ, pɑ… pi, pi, pi, pi…
• tɑ, tɑ, tɑ, tɑ… ti, ti, ti, ti…
• kɑ, kɑ, kɑ, kɑ… ki, ki, ki, ki…
• sɑ, sɑ, sɑ, sɑ… si, si, si, si…
• shɑ, shɑ, shɑ, shɑ… shi, shi, shi, shi…
To test hypernasality or nasal emission, use oral consonants with high and low vowels:
Repetition of Syllables
• mɑ, mɑ, mɑ, mɑ… mi, mi, mi, mi…
• nɑ, nɑ, nɑ, nɑ… ni, ni, ni, ni…
To test hyponasality, use nasal sounds with high and low vowels:
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Counting
• Count from 60 to 70
• Repeat 60 or 66 over and over
66 = SIKSTY SIKS
• Good combination of plosives and fricatives in blends
To test nasal emission:
Counting
• Count from 90 to 99
• Repeat 99 over and over
To test hyponasality:
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Repetition of Sentences• p/b: Popeye plays baseball.
• t/d: Take Teddy to town. Do it for Daddy.
• k/g: Give Kate the cake. Go get the wagon.
• f/v: Fred has five fish. Drive the van.
• s/z: I see the sun in the sky.
• sh: She went shopping.
• ch: I ride a choo choo train.
• j: John told a joke to Jim.
• l: Look at the lady.
• r: Run down the road. I have a red fire truck.
• th: Thank you for the toothbrush.
• Blends: splash, sprinkle, street
Stimulability and Consistency
• Does change in placement change VP function and eliminate nasality?
• Stimulability is a good prognostic indicator for improvement or correction with therapy
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Either/Or Questionsfor Non Compliant Children
What do you like best?
• Puppy dogs or kitty cats?
• Baby dolls or teddy bears?
• Cup cakes or cookies?
• Baseball or basketball?
• Dancing or singing?
Low-Tech & “No-Tech” Procedures
Use same type of speech samples to:
• see
• feel
• hear
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See: Mirror Test
See: Air Paddle
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See: See-Scape
Feel: Sides of Nose
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Hear: Nose Plugging
• Listen to oral sounds and sentences with nose open and then closed
• If there is a difference, there is an open VP valve
• If there is no difference, the test is inconclusive
Hear: Stethoscope
• Take off the drum
• Put the tip of the tube at the entrance of a nostril
• Listen for air or sound through the scope during production of oral sounds
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Straw
• Same as stethoscope
• Straw is always available and it’s disposable!
Hear: Listening Tube
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Prediction of Size of Gapbased on perceptual features
→ Hypernasality, inaudible nasal emission, weak
consonants, short utterance length,
compensatory productions
→ Hypernasality, audible nasal emission, weak
consonants, may have compensatory
productions
→ Audible nasal emission and possibly mild
hypernasality
→ Normal resonance, but inconsistent nasal rustle
(turbulence)
Intra-Oral Evaluation
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Intra-Oral Evaluation
• Can evaluate oral structures and oral function
• Cannot evaluate velopharyngeal structure or VP function
• View is well below area of closure
Intra-Oral Evaluation
• Dentition and occlusion
• Oral cavity size
• Position of the tongue tip relative to the alveolar ridge
• Presence of a fistula
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Intra-Oral Evaluation (cont.)
• Signs of a submucous cleft
• Position of the uvula during phonation
• Size of the tonsils
• Signs of upper airway obstruction
• Signs of oral-motor dysfunction
Tools for an Intra-Oral Exam
• Gloves
• Light
• Dental mirror
• Tongue blades – (preferably the flavored kind)
• Antimicrobial hand rinse
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Dental and Occlusal Exam
Fistula
Effect depends on location and size
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Oronasal Fistula vs. VPI
• Occlude the fistula with gum or fruit roll up
OR
• Compare the degree of nasal air emission for anterior sounds (i.e., /p/, /t/) and posterior sounds (i.e., /k/)
Intra-Oral Evaluation
• Need to see to the tip of the uvula
• Avoid using a tongue blade
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Say /æ/ (as in “bat”) and protrude the tongue
/æ/
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Normal Velum
• Color is pinkish and consistent
• White line down the middle (median raphe)
• Velar dimple about 80% back of the entire length of the velum during phonation
• “Uni-uvula”
Tonsils
• Judge the size and symmetry
• May affect position of the uvula
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Uvula
• Should be in midline during rest and phonation
• Look for deviation or pointing to one side
Evidence of
Upper Airway Obstruction
• Open mouth posture and anterior tongue position
• Suborbital shiners (black eyes)• Strident breathing• Snoring and history of restless sleeping
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Instrumental Evaluation
Nasometry (KayPentax)
• Analyzes acoustic energy from oral and nasal cavities
• Gives an objective nasalance score (ratio of oral/total energy)
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Pressure-Flow Technique
• Aerodynamic instrumentation
• Measures air pressure and airflow during production of a small speech segment
• Gives estimate velopharyngeal orifice size
Pressure-Flow TechniqueCatheters:• One in a nostril and one in mouth
• Connected to a pressure
transducer
Flow Tube:• One in the other nostril
• Connected to a heated
pneumotachograph
Reproduced with
permission from
David Zajac, PhD
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Videofluoroscopy
• Multi-view radiographic assessment
– Lateral view
– anterior-posterior (AP) view
(AKA frontal view)
– Base view
• Studies are interpreted by both a radiologist and a speech pathologist
Videofluoroscopy: Lateral View
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Videofluoroscopy: AP View
Videofluoroscopy: Lateral View
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Videofluoroscopy: AP View
Videofluoroscopy: Base View
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Nasopharyngoscopy
• Allows direct observationof structures and function of the VP mechanism
• Can see location of the opening
Nasopharyngoscopy vs.
Videofluoroscopy
• Done without radiation
• Better tolerated by even young patients (barium for videofluoroscopy is noxious!)
• Much better resolution
• Can see entire port in one view
• No false negatives (head rotation)
• Can see even small gaps
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Nasal Spray• Afrin and Pontocaine thru nosal spray
Nasopharyngoscopy
• Endoscope passed thru middle meatus, thru
choanal orifice, to VP port
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Happy Camper
Occult Submucous Cleft
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Small Circular Gap in Midline
Small Lateral Gap
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Bowtie ClosureWith Lateral Gaps
Bowtie Closure
With Lateral Gaps
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Narrow Coronal Gap
Coronal Gap with Touch Closure in Midline
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Medium-Size Opening in Midline
Large Opening
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Nasopharyngoscopy
• Scope can be passed by either a surgeon or SLP
• Speech sample should be done by SLP
• Interpretation requires expertise of surgeon and SLP
Why?
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Treatment of VP Insufficiency
• Surgery
• Speech bulb (if surgery is not an option)
• Speech therapy postoperatively to eliminate compensatory articulation errors
Treatment of VP Incompetence(neurophysiological cause)
• Surgery
• Palatal lift (if surgery is not an option)
• Speech therapy postoperatively to eliminate compensatory articulation errors
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VP Mislearning
• Speech therapy only
TREATMENT OF VPI
• Surgery
• Prosthetics
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Surgery for VPI
• Pharyngeal augmentation
• Furlow Z plasty
• Pharyngeal flap
• Sphincter pharyngoplasty
Note: These do not always work the first time. May need revision or even re-do.
Pharyngeal Augmentation
• Injection of a substance in the posterior pharyngeal wall
• Can use fat, collagen or Radiesse (hydroxyl apetit)
• Good for small, localized gaps or irregularities of the posterior pharyngeal wall
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Furlow Z Plasty
• Often used as a primary palate repair
• Can be used as a secondary repair to lengthen velum
• Appropriate for narrow, coronal gaps
Pharyngeal Flap
• Best for central openings, big openings, or deep gap
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Pharyngeal Flap
• Best for central openings, big openings, or deep gap
Pharyngeal Flap
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Pharyngeal Flap
Pharyngeal FlapPatient’s left lateral port
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Pharyngeal Flap Patient’s right lateral port
Pharyngeal FlapsBoth are too low
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Sphincter Pharyngoplasty
Sphincter PharyngoplastyToo narrow and too low
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Factors in Surgical Procedure Selection
• Cause: irregular adenoids versus short velum
• Size of the opening
• Risk of airway obstruction
�Location, Location, Location!!!
Need to find the hole and find the right procedure to fill it!
Surgical Procedure Selection
• Midline gap (most common with cleft palate) or large gap- pharyngeal flap is best
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Surgical Procedure Selection
• Lateral gap(s)- sphincter pharyngoplasty (unilateral or bilateral) is best
Prosthetic Devices
• Palatal lift
• Palatal obturator
• Speech bulb
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Palatal Lift• To raise the velum when velar mobility is poor
(velopharyngeal incompetence)
• Commonly used with dysarthria
Palatal Obturator
• To close or occlude an open cleft, palatal defect or fistula
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Speech Bulb (Speech Aid)• To occlude nasopharynx when the velum is
short (velopharyngeal insufficiency)
• Can be combined with an obturator
Speech Bulb
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Palatal Obturator with Bulb
Limitations of Prosthetic Devices
• Require insertion and removal
• Have to redo periodically due to growth
• Can be lost or damaged
• May be very uncomfortable
• Compliance is often poor
• Don’t permanently correct the problem
Most centers use only if surgery is not possible
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Speech Therapy
Speech TherapyWith Structural Anomalies
• Speech therapy CANNOT…
– change abnormal structure, and therefore cannot…
– correct “nasality” due to VPI
• Speech therapy CAN:
– correct compensatory placement errors secondary to
VPI or malocclusion, and…
– correct placement errors that cause nasal emission
or hypernasality
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Speech Therapy or Not
Red: Stop! Obligatory distortions will not respond to speech therapy
Green: Go! Compensatory errors will require speech therapy after correction of the structure
Obligatory Distortions
Because articulation placement is normal and the distortion is due solely to abnormal structure,
obligatory distortions…
• CANNOT be corrected with speech therapy
• Require physical management (surgery, prosthetic appliance, orthodontics, etc.)
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Compensatory Errors
Because articulation placement is abnormal, compensatory errors…
• CAN be corrected with speech therapy
• It’s best to do therapy after correction of the structure
Effects of VPI (or fistula)on Speech and Resonance
1. Hypernasality: Affects sound; therefore, vowels and
voiced consonants
2. Nasal air emission: Affects air pressure; therefore,
pressure-sensitive consonants (plosives, fricatives and affricates). Causes…
– weak or omitted consonants
– short utterance length (due to need to replenish breath)
– nasal grimace
– compensatory articulation productions
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Speech Therapy Techniques
Speech Therapy with Uncorrected VPI
• Done while waiting for surgery or a prosthesis
• Use nose plugging technique
– Gives the child increased oral pressure to work on articulation
– Child should wear nose plug at home as much as possible
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Speech Therapy after VPI Surgery
• Changing structure does not change function
• There may be remaining hypernasality or nasal emission due to lack of use of structures
• There may be compensatory errors which result in nasal emission
Speech Therapy for Post-OpHypernasality or Nasal Emission
• Need auditory feedback to learn to make use of the corrected structures
– Auditory stimulation and imitation is the “natural” way
• Tubes work best
• “Exercises” do not work!!!
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Disadvantage of Listening Tube
• SLP or parent can’t hear what child hears
• Half of the sound is going through the tube to the child’s ear
Auditory Feedback:Oral & Nasal Listener (ONL)*
• Allows the SLP or parent to hear the sound and therefore, help in giving feedback
* Super Duper Publications- 2007
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Therapy for Placement ErrorsCompensatory or Mislearning
• Glottal stops
• Nasalized plosives, vowels or ng/l
• Nasalized (or misarticulated) /r/
• Pharyngeal plosives (or abnormal /k/ or /g/)
• Pharyngeal or posterior nasal fricatives
• Palatal-dorsal production (or lateral lisp)
Start with Awareness
• Give as many clues as possible using the following senses:
– Visual
– Tactile
– Auditory
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Therapy for Glottal stops
• Make the child aware of the wrong sound and the target– Watch neck in mirror during production
– Feel the neck during production
– Hear the difference by contrasting the glottal stop with voice onset with single vowels and with nasal syllables (i.e., ma)
– Hear the difference between the target sound and the glottal stop
Therapy for Glottal stops
• Produce an isolated voiceless plosive (i.e., /p/)
• Produce the voiceless plosive and then the vowel preceded by an /h/ (i.e., /p… ha/
• Produce the voiced plosive cognate with a whisper and add an /h/ before the vowel (i.e., /b…ha/
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Therapy for nasalized plosives, vowels or ng/l
• Begin with a big yawn to raise the velum and bring down the back of the tongue
• Make the child aware of the open stretch in the back of the mouth
• Co-articulate the /l/, plosive or vowel with a big yawn and then gradually decrease
• For auditory feedback, use the ONL or listening tube
Therapy for /ɚ/
• With a tongue blade, stimulate both sides of the back of the tongue and then the upper gum ridge behind the molars
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Therapy for /ɚ/
• Show the child how the shape of the tongue forms a “boat”
• Show where the back of tongue touches gums behind or just under upper molars
• Ask the child to make a wide smile while “backing up the boat”
Therapy for /ɚ/
• Push up against the base of the chin with your finger to push up the back of the tongue
• Make sure it feels loose so you can push
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Therapy for /ɚ/
• Assist placement by squeezing the cheeks with your thumb and forefinger to get lip rounding
• Use your middle finger to push up the back of the tongue
Therapy for /ɚ/
• Once final /ɚ/ is achieved, work on initial /r/ by showing the forward movement of the tongue with your hand
• If the child goes to a /w/, have him hold his hands on his face and tell him not to allow the face to move while going from /ɚ/ to /r/
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Therapy for pharyngeal plosives (or abnormal k/g)
• Start with an /ng/ placement
• Have the child hold /ng/ to feel placement
• If the child can’t produce an /ng/…
– Put a tongue blade on the middle of the tongue and push down and back OR
– Firmly press your thumb under the base of the child’s chin to push the back of the tongue up
• Work on the up and down movement by achieving position and then dropping the tongue
Therapy for pharyngeal plosives (or abnormal k/g)
• Have child take a breath, place his tongue in an /ng/ position, and drop the tongue to produce a /g/
• If necessary, pinch his nose closed and then have him drop the tongue
• Have the child whisper this sound to achieve the /k/
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Therapy for pharyngeal or posterior nasal fricatives
• Have the child produce a loud /t/ sound
• Have him produce the /t/ with the teeth closed
• Have the child prolong the production until it becomes /tssss/
Palatal-dorsal productions causing lateral distortion
• Causes lateral distortion on lingual-alveolars and a lateral lisp on sibilants
• To determine flow of air, put a straw in front of the teeth and to the sides during the production of the /s/
– If normal, air through straw will be heard when it is in front of the central incisors
– If lateral, air through straw will be heard when it is on the side of the dental arch
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Therapy for palatal-dorsal productions/lateral lisp
• Essentially same technique as with pharyngeal/posterior nasal fricatives
– Have the child produce /t/ and push the airstream into the straw
– Move to /tssss/ and prolong the /s/ with air going through the straw
– Transition to the syllable by inserting an /h/ between the /s/ and vowel
Establishment of “Carry-Over”
• Speech requires motor movement that is fast, complex, automatic and effortless
• This is accomplished by motor learning and motor memory
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Motor Learning
• Motor learning is dependent on feedback
• Results in the development, change or refinement of a motor program (i.e., change in production of a speech sound)
• This is what is done in speech therapy
Motor Memory
• Motor memory is dependent on practice
• Develops the automaticity of the movement
• This is what should be done at home
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Practice
• Result in brain reorganization due to neural plasticity
• Necessary for learning to perform all complicated motor movements and sequences without conscious thought
Examples:
• Playing an instrument: piano
• Ballroom dancing: salsa
• Sports: shooting a basketball
• Speech
Therapy is like Piano Lessons
• If you just go for the lesson but don’t practice at home, you don’t learn to play the piano
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Practice Amount
• A large number of practice trials is most beneficial for learning
– The number of correct responses elicited (in therapy and at home) is directly related to the rate of progress.
– Drill work is most effective
Practice Distribution
• Distributed facilitates both short-term performance and long-term learning
– Frequent short practice sessions throughout the day and week are better than a few long sessions
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Weekly Practice Log
Mon Tues Wed Thurs Fri Sat Sun Total
# of times
Mon Tues Wed Thurs Fri Sat Sun Total
# of times
Mon Tues Wed Thurs Fri Sat Sun Total
# of times
Mon Tues Wed Thurs Fri Sat Sun Total
# of times
Child’s Name: _______________Practice Log Start Date: ____________Practice between sessions will greatly increase your child’s success in speech
therapy. It is better to practice several times each a day, than to practice a long
time once a day. A practice session can be as short as 30 seconds.
What NOT to do for VPI…
• Do NOT use blowing or sucking exercises
• Do NOT use velar exercises
• Do NOT use oral-motor exercises
• Do NOT pinch the nose to improve VP function
– This inhibits velar movement against positive pressure
• None of these techniques have evidence of efficacy and they just don’t work!!!
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Goal of Treatment
• Normal speech and resonance
• Merely “acceptable speech” is not acceptable!
• If there is little progress, refer to a craniofacial team for assessment of VP function!
Referrals
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Referrals
Check Around...
• This is a specialty area for all disciplines (ENT, surgery and speech path)
• Refer to a craniofacial team
• Check with American Cleft Palate-Craniofacial Association (ACPA) for professionals with experience in this area (http://www.acpa-cpf.org/)
Resources
• Kummer AW. (2008). Cleft Palate and Craniofacial Anomalies: Effects on Speech and Resonance, 2nd Edition. Clifton Park, NY: Delmar Cengage Learning.
• Kummer, AW. (2011). Disorders of resonance and airflow secondary to cleft palate and/or velopharyngeal dysfunction. Seminars in Speech and Language, 32(2), 141-149.
• Kummer, AW. (2011). Types and causes of velopharyngeal dysfunction. Seminars in Speech and Language, 32(2), 150-158.
• Kummer, AW. (2011). Perceptual assessment of resonance and velopharyngeal dysfunction. Seminars in Speech and Language, 32(2), 159-167.
• Kummer, AW. (2011). Speech therapy for errors secondary to cleft palate and velopharyngeal dysfunction. Seminars in Speech and Language, 32(2), 191-199.
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Thanks for your interest!