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Файл:Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_4523_Библиотеки_им_академика_М_И_Перельмана
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Aural Rehabilitation of a Sequential Bilateral Cochlear Implant User
Branski and Molfenter, Speech-Language Pathology Casebook (ISBN 978-1-62623-487-1),
copyright © 2020 Thieme Medical Publishers. All rights reserved. Usage subject to terms and conditions of license.
at a restaurant, grocery store, and doctor’soffice. Auditory
comprehension was trained through following directions
and auditory transfer activities.
●
Instructing and providing feedback on the use of prosodic
features.
○
She initially demonstrated difficulty with breath support,
pitch, resonance, and loudness, but with ongoing treatment
and feedback, she began to better monitor these speech
skills.
●
Training in difficult listening contexts (close vs. distant listening, quiet vs. noisy environment, live vs. recorded speech).
●
Encouraging the use of computerized training programs and
support applications available.
●
Recommending local support groups or online adult CI blogs.
○
WM started her own blog for her emotional support and to
assist others with profound hearing loss.
66.6 Outcome
Postimplant audiological testing revealed a marked improvement in speech recognition in the left ear and binaurally at 3
months poststimulation. Results of pre- and postimplant audiological testing are provided in ▶ Fig. 66.1 and ▶ Fig. 66.2.
Her functional speech perception scores on the AB short word
list improved slightly in all conditions, except performance in
noise, which remained stable. Results of functional speech-perception testing are presented in ▶ Table 66.2.
Subjectively, WM reported increased confidence and comfort
with conversations in the context of multiple speakers at gatherings. Noisy restaurants were still difficult for her and she used
communication strategies that were discussed and practiced in
therapy. She was able to self-monitor her speech and voice quality. When she had difficulty, she effectively used compensatory
strategies in addition to taking advantage of her device accessories specifically to support listening in noise. She began employing several strategies to increase perception, including requesting
repetition, requesting use of slower speech, requesting the first
and/or last word, repeating back what was heard, asking for a
paraphrase, asking for a spelling, or requesting key words.
WM continued to utilize an at-home computerized training
program, which was created by the CI device manufacturer. She
began meeting friends in places she would typically avoid, such
as busy restaurants and social gatherings.
66.7 Key Points
●
Sequential bilateral implant users present challenges to the
user and the clinician.
●
Therapeutic techniques will evolve over t ime dependent on
the progress and needs of the patient.
Fig. 66.1 Preimplant audiological testing.
259

Aural Rehabilitation of a Sequential Bilateral Cochlear Implant User
Branski and Molfenter, Speech-Language Pathology Casebook (ISBN 978-1-62623-487-1),
copyright © 2020 Thieme Medical Publishers. All rights reserved. Usage subject to terms and conditions of license.
Fig. 66.2 Postimplant audiological testing.
Table 66.2 Results of functional speech perception testing—3 months
postactivation of sequential CI
Bilateral
(quiet)
Initial consonants
Vowels 100% 80% 100% 100%
Final consonants
Whole
words
CI, cochlear implant.
80% 70% 40% 70%
90% 60% 70% 70%
70% 50% 50% 60%
Bilateral
(noise)
Left CI Right CI
●
A multidisciplinary approach to treatment will assure the
most optimal performance.
●
In addition to direct therapy, a patient can utilize computerized home training to support development of auditory skills.
Suggested Readings
[1] Luterman DM. Counseling Persons with Communication Disorders and Their
Families. 5th ed. Austin, TX: Pro-ed; 2008
[2] Tye-Murray N. Foundations of Aural Rehabilitation Children, Adults, and Their
Family Members. 3rd ed. Clifton Park, NY: Delmar Cengage Learning; 2009
[3] Adunka OF, Dillon MT, Buchman CA. Auditory outcomes in the adult popula-
tion. In: Waltzman SB, Roland JT, Eds. Cochlear Implants. 3rd ed. New York,
NY: Thieme; 2014:167–181
260

Benign VF Lesions: The Role of Stimulability Testing and Voice Therapy
Branski and Molfenter, Speech-Language Pathology Casebook (ISBN 978-1-62623-487-1),
copyright © 2020 Thieme Medical Publishers. All rights reserved. Usage subject to terms and conditions of license.
67 Benign VF Lesions: The Role of Stimulability Testing and
Voice Therapy
James Curtis
67.1 Introduction
The impact of inefficient voice use patterns on voice-related
symptoms can often be overlooked or underappreciated in the
presence of large benign vocal fold lesions. If voice symptoms
improve with voice efficiency modifications despite the presence
of large benign vocal fold lesions, behavioral therapy may be the
only intervention required despite a desire for surgical excision.
67.2 Clinical History
HG was a 56-year-old male businessman with a history of right
vocal fold scar and left vocal fold cyst referred for interdisciplinary speech-language pathology (SLP) and laryngology (MD)
evaluation. HG reported a 3-year history of voice impairment
characterized by increased vocal effort, vocal pain, and vocal fatigue following short periods of continuousvoice use (e.g., during
business presentations), and a rough, breathy, and inconsistent
voice quality. He reported symptom onset may have coincided
with a gradual increase in professional voice demands, but
denied any specific inciting event. He previously underwent a
course of voice therapy in India where he spends 3 to 6 months
of every year; this therapy included vocal rest and improved
vocal hygiene. HG noted that, at that time, voice rest tended to
temporarily relieve his pain, effort, and fatigue symptoms. However, his baseline dysphonia persisted. He was recently seen by
an outside physician who recommended surgical intervention
for the vocal fold cyst; however, he was not interested in surgery
at that time and sought a second opinion regarding intervention.
67.3 Clinical Testing
Clinical assessment of voice included a thorough case history
and patient interview, perceptual assessment of voice, rigid laryngostroboscopic evaluation, and stimulability testing.
Perceptual assessment of voice was judged using a 0 (none)to
3(severe) GRBAS scale, which revealed moderate overall dyspho-
nia (2/3), moderate roughness (2/3), mild-to-moderate breathiness (1.5/3), and moderate strain (2/3). Perceptual assessment of
voice and resonance also revealed a posterior/pharyngeal locus
of resonance and reduced phonatory airflow, with intermittent
diplophonia during sustained phonation at high pitches. Perceptual assessment of perilaryngeal muscle tension was judged
using a subjective 0 (none)to3(severe) scale upon palpation of
the perilaryngeal musculature. Findings from palpation revealed
moderate bilateral tension in the masseters (2/3), submental
region (2/3), suprahyoid/base of tongue region (2/3), thyrohyoid
space (2/3; mildly increased with phonation), infrahyoid muscles
(2/3), and sternocleidomastoid (2/3). Of note, HG reported moderate tenderness in the thyrohyoid space upon palpation,
left greater than right.
Laryngoscopic and stroboscopic findings (▶ Fig. 67.1):
●
Supraglottic hyperfunction characterized by lateral compression of the ventricular folds.
●
Large, discrete, sessile, broad-based lesion on the left midmembranous vocal fold.
●
Mucosal grooving on the medial edge of the right midmembranous vocal fold.
●
Vertical phase difference (VPD) and mucosal wave were
absent on the right vocal fold at site of grooving, and reduced
on the left vocal fold at site of lesion.
●
Hourglass phonatory closure pattern at all pitches.
Trial therapy was used to assess HG’s awareness of voice use
and tension-holding patterns and to assess stimulability for
improved reduced perilaryngeal tension and improved voice
efficiency. Stimulability was performed indirectly in response
to the r igid endoscopic evaluation, and directly during introduction of flow phonation and resonant voice therapy tasks.
HG was immediately stimulable for reduced thyrohyoid and
suprahyoid tension, reduced vocal strain and roughness, and
Fig. 67.1 Laryngoscopic and stroboscopic findings on initial evaluation.
261

Benign VF Lesions: The Role of Stimulability Testing and Voice Therapy
Branski and Molfenter, Speech-Language Pathology Casebook (ISBN 978-1-62623-487-1),
copyright © 2020 Thieme Medical Publishers. All rights reserved. Usage subject to terms and conditions of license.
improved balance of phonatory airflow and anterior oral resonance. Breathiness was consistent and persisted despite
unloading of tension.
67.4 Questions and Answers for
the Reader
1. What findings from the patient history and clinical assessment might lead you to believe he may benefit from behavioral intervention?
a) The presence of abnormal perilaryngeal tension and vocal
strain.
b) The presence of a vocal fold cyst.
c) The patient report of vocal effort and pain.
d) a and c.
Answer: d is correct. While voice therapy cannot be guaranteed
to improve resolution of benign vocal fold lesions, symptoms
related to vocal effort and vocal fatigue can very likely be
related to inefficient voice use and tension-holding patterns—
both of which are primary targets of behavioral voice therapy.
Given that these symptoms are reported by the patient, therapy
should be trialed to ameliorate these symptoms, even if surgery
is initially or ultimately recommended.
a is partially correct. Perilar yngeal tension and vocal strain
are behaviors that can lead to symptoms of vocal effort, pain,
and a dysphonic voice qualit y. Because tension and strain are
modifiable behaviors, patients presenting with tension and
strain may benefit considerably from voice therapy. Targeting
reductions in tension and strain can therefore lessen complaints
associated with vocal effort and laryngeal pain and, in some
cases, improve smoothness of voice quality in the presence of a
lesion (by facilitating consistent phonatory airflow and periodic
vibration).
c is partially correct. Vocal effort and pain are likely related to
vocal efficiency and laryngeal tension, rather than presence of
cyst. As effort and pain are associated with the modifiable
behaviors of tension and strain, trial course of behavioral intervention is certainly warranted.
b is incorrect. The presence/absence of a lesion does not dictate whether someone may or may not benefit from therapy.
For example, a patient may have a vocal fold cyst and be asymptomatic, and therefore therapy would not be warranted.
2. What findings from the clinical assessment might lead you
to believe that the dysphonia is related, at least in part, to
voice use patterns, and may benefit from voice therapy?
a) Audible vocal strain.
b) Response to stimulability testing.
c) a and b.
Answer: c is correct. Vocal strain is the result of hyperfunctional glottic valving, which can often result in reduced phonatory airflow and vocal roughness. Responses to stimulability
testing revealed that the patient was able to reduce vocal strain
and vocal roughness. Therefore, while the dysphonic breathy
quality persisted, other parameters of dysphonia were
improved with behavioral intervention, further supporting the
role for voice therapy for this patient.
a is partially correct. Vocal strain is a function of how someone produces voice, rather than presence of any anatomic
abnormalities (e.g., cyst). Vocal strain can reduce the amount
and consistency of phonatory airflow, thereby contributing to
aperiodicity (roughness) of voice production. Because vocal
strain is likely contributing to this patient’s dysphonia, and
strain is a behavioral target, you may consider that the patient
would benefit from voice therapy.
b is partially correct. Given that the patient was stimulable
for change, and the change resulted in smoother and more efficient voice quality, he would likely benefit from therapy to target consistent, long-term carryover.
3. What would be your primary goal for voice therapy with this
patient?
a) Improved voice efficiency.
b) Improved voice quality.
c) Resolution of vocal fold lesion.
Answer: a is correct. As behavioral therapists, our primary goal
should be to improve efficiency of voice production (as able)—
ideally to a level that is sustainable for the patient. Typically, in
patients with muscle tension dysphonia, this may include
reducing perilaryngeal tension at rest and during phonation,
and reducing vocal strain to a level that is sustainable for the
patient (i.e., where it does not contribute to any perceivable
voice changes), while improving balance of easy oral resonance
and phonatory airflow.
b is incorrect. Improved voice quality does not always equate
to improve voice efficiency and sustainable voice production,
and therefore should not be the primary focus of therapy. Individuals with a large vocal fold cyst may achieve “improved voice
quality” by straining/pressing over the lesion to achieve a complete phonatory closure pattern to eliminate perceived breathiness. This will likely lead to vocal fatigue, pain, and exacerbation of benign vocal fold lesion.
voice
c is incorrect. If a patient is able to produce an e
in the presence of a lesion, and their symptoms resolve, then
the presence/absence of the vocal fold lesion is insignificant.
fficient
67.5 Description of Disorder and
Recommended Treatment
Impressions from the initial evaluation revealed a diagnosis of
left vocal fold cyst, right vocal fold sulcus, and muscle tension
dysphonia. Interdisciplinary SLP/MD impressions suggested
that the majority of his symptoms were the result of muscle
tension dysphonia characterized by reduced phonatory airflow,
vocal strain, and perilaryngeal tension. The benign vocal fold
lesions likely contributed mainly to the dysphonic breathy quality, the result of incomplete vocal fold closure at site of lesions.
Voice therapy was recommended with the goal of improved
voice efficiency (i.e., reduced strain, and improved balance of
phonatory airflow and easy, anterior oral resonance), and ultimately reduced vocal pain, vocal effort, vocal fatigue, and, to
some extent, improved overall voice quality.
Five sessions of voice therapy were completed over the
course of 2 months. Specific recommended therapy targets
included:
262

Benign VF Lesions: The Role of Stimulability Testing and Voice Therapy
Branski and Molfenter, Speech-Language Pathology Casebook (ISBN 978-1-62623-487-1),
copyright © 2020 Thieme Medical Publishers. All rights reserved. Usage subject to terms and conditions of license.
●
Education regarding normal laryngeal anatomy and physiology, mechanics of efficient voice production, and current
voice use and tension-holding patterns.
●
Perilaryngeal massage to reduce, manage, and build awareness of inefficient perilaryngeal tension-holding patterns.
Awareness of tension was explored within the context of
massage and in conjunction with voicing tasks.
●
Voice efficiency tasks as defined by improved balance of airflow, easy oral resonance, and minimal perilaryngeal muscle
engagement during phonation. Training involved a brief
introduction of stretch-and-flow and semi-occluded vocal
tract basic training gestures (e.g., /u/ and /f/-to-/v/ phonation)
with near-immediate carryover of concepts and sensations
into sentences and conversation.
●
Awareness and discrimination tasks aimed to build accuracy
in identification between efficient and inefficient voice use by
exploring physiologic sensations at the basic training gesture
level (e.g., sensation of airflow on fingers during sustained
phonation of /f/ and /v/), and by utilizing negative practice to
alter between e ffi cient physiologic sensations (e.g., easy, anterior, oral resonance) or inefficient physiologic sensations (e.g.,
pharyngeal focus resonance).
●
Vocal cool downs were recommended to promote tissue
remodeling and wound healing. These cool downs were rec-
ommended following periods of increased voice use leading
to exacerbation of symptoms.
67.6 Outcome
the initial evaluation, HG reported complete resolution of vocal
pain, no observable vocal effor t, and increased/functional vocal
stamina. He also noted that voice quality, while still breathy
from time to time, was no longer unstable or unpredictable,
and was felt to be consistently smoother and less dysphonic.
Perceptual assessment by both the SLP and MD revealed
improved voice quality, now with minimal breathiness, intermittent strain and roughness, and minimal thyrohyoid and jaw
tension. Laryngoscopic evaluation revealed persistent right
vocal fold scar and left vocal fold cyst that was reduced in size
compared to initial evaluation (▶ Fig. 67.2). Stroboscopic evaluation revealed improved VPD and mucosal wave and complete
closure at all pitches elicited (▶ Fig. 67.2).
The primary goal of voice therapy was intended to entrain
efficient voice production to manage patient symptoms, despite
the presence of vocal fold lesions. This goal was largely obtained
based on patient report and findings at follow-up evaluation.
Awareness of voice use patterns allowed empowered HG to
identify inefficient patterns, and negative practice throughout
the course of therapy provided him with the tools to modif y
back and forth between efficient and inefficient voice use.
Although the primary goal of therapy was not lesion resolution,
dramatic reduction in the size of the left vocal fold cyst was
observed. HG immediately achieved smooth and efficient voice
in the presence of vocal fold scar and large left vocal fold cyst at
initial presentation. However, reduction in lesion size allowed
for more flexibility with regard to efficient voice production.
HG completed his scheduled course of voice therapy with near
100% adherence to therapy recommendations, per his report.
By the end of therapy, he demonstrated consistent of therapy
concepts and efficient voice production during spontaneous
conversation with the clinicians, accurately and consistently
produced efficient and inefficient voice productions upon cueing, and reported consistent use of efficient voicing at work. He
reported awareness that he would intermittently “slip” into
inefficient voice use patterns, but was able to quickly modify
back into an efficient voice.
Upon his post-therapy follow-up evaluation completed 1
month after the last therapy session and about 3 months after
67.7 Key Points
●
Large benign lesions may not be the primary contributing
factor to voice impairment.
●
A thorough clinical history, patient interview, and stimulability testing during the initial evaluation are critical to identify
the contributions of anatomic and physiologic findings underlying patient symptoms.
●
Clinicians should not underestimate the contribution of
muscle tension and inefficient voice use patterns in patient
symptoms, particularly in the presence of large benign vocal
fold lesions. Symptoms may be well managed with voice
Fig. 67.2 Laryngoscopic and stroboscopic findings after completion of voice therapy.
263

Benign VF Lesions: The Role of Stimulability Testing and Voice Therapy
Branski and Molfenter, Speech-Language Pathology Casebook (ISBN 978-1-62623-487-1),
copyright © 2020 Thieme Medical Publishers. All rights reserved. Usage subject to terms and conditions of license.
therapy alone if stimulability testing indicates potential for a
functionally efficient voice, regardless of lesion management.
Suggested Readings
[1] Verdolini Abbott K, Li NYK, Branski RC, et al. Vocal exercise may attenuate
acute vocal fold inflammation. J Voice. 2012; 26(6):814.e1–814.e13
[2] Gartner-Schmidt J, Gherson S, Hapner ER, et al. The development of conversa-
tion training therapy: a concept paper. J Voice. 2016; 30(5):563–573
[3] Gillespie AI, Gartner-Schmidt J. Immediate effect of stimulability assessment
on acoustic, aerodynamic, and patient-perceptual measures of voice. J Voice.
2016; 30(4):507.e9–507.e14
264

Dystussia and Dysphagia in Parkinson’s Disease
Branski and Molfenter, Speech-Language Pathology Casebook (ISBN 978-1-62623-487-1),
copyright © 2020 Thieme Medical Publishers. All rights reserved. Usage subject to terms and conditions of license.
68 Dystussia and Dysphagia in Parkinson’s Disease
Michelle S. Troche, Jordanna M. Sevitz, and Alease M. Holden
68.1 Introduction
Aspiration pneumonia is the leading cause of death in
Parkinson’s disease (PD) and much of this pulmonary sequelae
can likely be attributed to the concomitant presence of swallowing (dysphagia) and cough (dystussia) disturbances, which
are often present in PD.
evaluate and manage behaviors across the continuum of
airway protection (from cough to swallowing) for improved
long-term health outcomes.
1–4
This case highlights the ne ed to
68.2 Clinical History and
Description
GB was a 69-year-old man who presented with Hoehn and
Yahr stage III PD with symptom onset 8 years prior. His medical
history was also significant for right unilateral subthalamic
nucleus (STN) deep brain stimulation (DBS) surgery followed by
left globus pallidus interna (GPi) DBS surgery 3 years later. Of
note, DBS has evolved as the management option of choice for
persons with PD. The two subcortical structures most commonly targeted during surgery for the treatment of PD are the
STN and GPi. Although STN and GPi DBS are generally considered safe and effective for the treatment of people with PD, less
is known about the impact of DBS on airway protection. Recent
work suggests that STN DBS may result in adverse effects to
swallowing function, which are not observed with GPi DBS.
GB was referred to our outpatient clinic due to a progressive
swallowing disturbance adversely affect ing oral intake and
quality of life. GB and his wife reported that over the past year,
he developed significant coughing with meals, particularly
when drinking liquids. He also reported that it was taking
him much longer to eat. His wife also noticed that he was drooling more often and coughing throughout the day even in the
absence of food or liquid. They also reported marked speech difficulties. GB’s wife was particularly worried about his reduced
loudness in conversation. GB and his wife reported that his
speech function worsened with DBS, but were most concerned
about his swallowing dysfunction. Prior to being seen in our
clinic, GB had undergone several swallowing evaluations
and subsequent treatment at other facilities. He reported that
his swallowing therapy consisted of oral motor exercises, the
Shaker exercise, and effortful swallow. Additionally, a neurologist recommended he employ a chin tuck when drinking thin
liquids. GB had no history of aspiration pneumonia or recent
weight loss. He was quite active, participating in weekly exercise classes, cognitive therapy, and a PD support group. He and
his wife were very motivated to address these swallowing
concerns, but were adamantly opposed to any form of enteral
feeding.
5,6
68.3 Clinical Testing
Videofluoroscopic evaluation of swallowing (VFES; ▶ Video 68.1)
was performed. This examination revealed aspiration of sequential thin liquid boluses and consistent penetration to the level of
the vocal folds with sequential presentation of nectar-thick
liquids. GB did not cough in response to the aspiration and/or
penetration. GB coughed when cued, but the cough was ineffective in clearing the aspirate/penetrant material from the airway.
His swallowing was also characterized by reduced extent and
duration of pharyngoesophageal segment opening, moderate
pharyngeal residue, pooling in the valleculae with pudding and
solid boluses, and reduced pharyngeal contraction. Oral transit
time was increased, especially for solid and pudding boluses.
A chin tuck was trialed with thin liquids, given that it had been
recommended by a prior neurologist; however, persistent aspiration was noted evenwith the chin tuck.
Voluntary and reflex cough testing was conducted to comprehensively assess airway protection in this patient. Voluntary
cough airflow dynamics were measured via spirometry during
three key phases of the cough: inspiratory phase, compression
phase, and expiratory phase (▶ Fig. 68.1). GB was cued to “cough
like something went down the wrong pipe” into a facemask to
assess the effectiveness of his voluntary cough. Various measures
of cough effectiveness were made from the airflow data. Previous
data suggested a predictive relationship between voluntary
cough airflow and penetration/aspiration in neurodegenerative
populations. GB’s peak expiratory flow rate (PEFR) was reduced,
his compression phase duration was prolonged, and his cough
volume acceleration (CVA) was markedly reduced (▶ Fig. 68.2).
Reflex cough testing was also conducted. GB was instructed to
breathe into a handheld device containing nebulized distilled
Video 68.1 Videofluoroscopic evaluation of swallowing
265

Dystussia and Dysphagia in Parkinson’s Disease
Branski and Molfenter, Speech-Language Pathology Casebook (ISBN 978-1-62623-487-1),
copyright © 2020 Thieme Medical Publishers. All rights reserved. Usage subject to terms and conditions of license.
Fig. 68.1 Airflow signal from a normal sequential cough
Fig. 68.2 Airflow signal from a sequential cough
produced by GB
water (FOG) and cough if necessary.7He did not cough in response to the FOG and reported no urge to cough (on a modified
Borg-scale where 0 indicates no urge and 10 indicates a very
severe urge). Additionally, maximum expiratory (MEP) and maximum inspiratory (MIP) pressures were evaluated to determine
the potential role of decreased respiratory muscle force generation on cough outcomes. GB’s average MEP was 77 cm H
his average MIP was 60 cm H
O.
2
Oand
2
68.4 Discussion Questions
1. Based on the outcomes of the clinical testing, why is it
important to address both the swallowing and cough deficits
in this patient?
2. What are two rehabilitation approaches you would try with
this patient and why? Have studies identified the efficacy of
these approaches?
3. What would you counsel this patient regarding his prognosis, the benefit of rehabilitation, and the importance of home
maintenance?
68.5 Questions and Answers for
the Reader
1. When analyzing cough airflow in PD, the presence of atussia
(i.e., absent cough) and/or dystussia (i.e., disordered cough)
may be indicated by (choose all that apply):
a) Decreased PEFR.
b) Increased PEFR.
c) Decreased CVA.
d) Increased CVA.
Answer: a is correct. Patients with PD often demonstrate
reduced PEFR. When this is the case, it indicates decreased
shearing forces that are necessary for forceful ejection of
endogenous material from the lower airways. Thus, reduced
PEFR is an indication of dystussia in this population.
c is correct. Patients with PD often demonstrate reduced
CVA. When this is the case, it indicates decreased shear ing
forces that are necessary for forceful ejection of endogenous
material from the lower airways. Thus, reduced CVA is an
indication of dystussia in this population.
b is incorrect. Patients with PD often demonstrate decreased
PEFR, indicating the presence of dystussia.
d is incorrect. Patients with PD often demonstrate decreased
CVA, indicating the presence of dystussia.
2. Which of the following are swallowing-specific rehabilitation
approaches that may be indicated for a patient with pervasive airway-protection deficits (choose all that apply)?
a) Expiratory muscle strength training (EMST).
b) The Mendelsohn maneuver.
c) The Masako maneuver.
Answer: b is correct. The Mendelsohn maneuver consists of
voluntarily manipulating laryngeal elevation during the task
of swallowing.
a is incorrect. EMST targets increased force generation of the
submental and respiratory muscles, but it does not do this
during the task of swallowing.
c is incorrect. The Masako maneuver involves swallowing
forcefully while placing one’s tongue in between one’s teeth.
This maneuver targets reduced base of tongue and pharyngeal force generation, which may subsequently reduce residue in the pharyngeal cavity, but does not primarily and specifically target improved airway protection.
3. During a VFES, your patient demonstrates several instances
of silent aspiration (aspiration without a cough response).
When asked to rate his urge to cough on a scale of 0 to 10,
your patient responds “8.” When asked to explain his reasoning for not coughing given his heightened perception,
your patient states, “I always feel a strong tickle when I drink
liquids.” Is the patient’s high urge to cough when aspirating
a positive or negative prognostic indicator?
a) Positive.
b) Negative.
266

Dystussia and Dysphagia in Parkinson’s Disease
Branski and Molfenter, Speech-Language Pathology Casebook (ISBN 978-1-62623-487-1),
copyright © 2020 Thieme Medical Publishers. All rights reserved. Usage subject to terms and conditions of license.
Answer: a is correct. This patient demonstrates an awareness
of the material in the airway. Therefore, this can be utilized
as a therapeutic target wherein the patient is taught to upregulate his reflex cough in the presence of the heightened
urge or “tickle.”
68.6 Description of Disorder and
Recommended Treatment
Swallowing and cough share neural substrates and fall on a continuum of airway protective behaviors.
prevent material from entering the airway, while cough is
essential for efficient ejection of material that has errantly
entered the airway. PD is often associated with pervasive and
progressive disorders of airway protection, presenting with
swallowing, voluntary, and reflex cough deficits, consistent
with GB’s presentation. GB presented with a moderate-tosevere sensorimotor dysphagia characterized by changes
throughout the swallowing mechanism. He also presented with
deficits of both reflex and voluntary cough. Most concerning for
swallowing safety was his consistent aspiration of thin liquids,
reduced sensation of this material (evidenced by no urge to
cough and no cough response to aspirate material), and ineffective reflex cough. Cough evaluation revealed decreased PEFR
and CVA; both measures indicate decreased shearing forces
necessary for clearing the lower airways of endogenous material. Thickening liquids to nectar and chin tuck were only minimally effective in reducing airway compromise and often were
associated with increased pharyngeal residue.
A multifaceted treatment approach to management was initiated, addressing both swallowing and cough disorders for maximum benefit to overall airway protection. The management
plan included EMST for improved respiratory and submental
muscle force generation to support cough and swallowing,
swallowing-specific exercises including the effortful swallow,
Masako (tongue hold) and Mendelsohn maneuvers, and a home
9,10
training program.
During the initial session, it became clear
that GB would not be able to complete the Mendelsohn maneuver, given the high cognitive demand, which is common when
treating patients with neurological conditions. Therefore, this
treatment approach was eliminated from the treatment plan.
The effortful swallow was paired with electromyography to
provide biofeedback. Finally, GB’s EMST device was set to 58 cm
O 75% of his MEP. GB was instructed to complete 25 breaths,
H
2
5daysaweek.
GB was seen weekly for treatment over 6 weeks. During that
time, he also completed a home program consisting of EMST,
repetitions of effortful swallowing and Masako maneuvers, and
voluntary coughs through a peak-flow meter to target
increased cough effectiveness.
11
a visual readout of PEFR, allowing GB to monitor his cough
airflow and attempt to increase it with practice.
8
Swallowing serves to
The peak flow device provided
68.7 Outcome
Following the 6 weeks of treatment , GB returned for swallowing evaluation. His VFES revealed improved swallowing safety
with no aspiration of nectar thick liquids and reduced aspira-
tion of single sips of thin liquids. However, he still demonstrated aspiration of sequential thin liquid presentations. Cough
effectiveness also improved. Overall, GB responded positively to
treatment; however, he did not demonstrate complete resolution of airway protective symptoms, which is common in PD
and other degenerative conditions. Success in therapy is most
often not complete resolution of symptoms, but some improvement in symptoms and slowing down of the trajectory of airway protective degeneration. Detraining after the removal of
treatment or exercise is seen in all people, but is more rapid in
degenerative conditions and in patients with more severe base-
12
line functioning.
Maintenance programs are a necessary component of the management plan for persons with degenerative
disease.
GB was provided with a rigorous home training program. It
was recommended that he return for consistent follow-up and
reevaluation. This level of follow-up is especially important
when patients like GB are not interested in enteral feeding. In
those cases, close follow-up should focus on determining the
least restrictive diet, modifying exercise-based training, and
providing the most effective compensations with special attention to oral hygiene and physical activity. A multifaceted and
holistic approach to management helps prevent pulmonary
sequelae while also balancing a positive quality of life.
68.8 Key Points
●
Swallowing and cough are on a continuum of airway protective behaviors; swallowing serves to protect the airway from
endogenous material and cough serves to eject material that
has errantly entered the airway. Both swallowing and cough
have been found to be disordered in PD and likely contribute
to aspiration pneumonia being a leading cause of death in this
population.
●
Quantitative measures of cough effectiveness should form a
part of our evaluation of airway protection in patients with
PD, therefore allowing for the more specific identification of
therapeutic targets.
●
Management of swallowing dysfunction in PD should be
accompanied by the targeting of reflex cough dysfunction as
well. This can be achieved through both strength training and
skill-based exercises.
●
Owing to the degenerative nature of PD, intensive home practice, maintenance programs, and consistent follow-up are
essential for long-term airway protective health and quality
of life.
Suggested Readings
[1] Troche MS, Brandimore AE, Okun MS, Davenport PW, Hegland KW.
Decreased cough sensitivity and aspiration in Parkinson disease. Chest. 2014;
146(5):1294–1299
[2] Troche MS, Brandimore AE, Foote KD, et al. Swallowing outcomes following
unilateral STN vs. GPi surgery: a retrospective analysis. Dysphagia. 2014; 29
(4):425–431
[3] Troche MS, Brandimore AE, Godoy J, Hegland KW. A framework for under-
standing shared substrates of airway protection. J Appl Oral Sci. 2014; 22(4):
251–260
[4] Troche MS, Okun MS, Rosenbek JC, et al. Aspiration and swallowing in Parkin-
son disease and rehabilitation with EMST: a randomized trial. Neurology.
2010; 75(21):1912–1919
267

Dystussia and Dysphagia in Parkinson’s Disease
Branski and Molfenter, Speech-Language Pathology Casebook (ISBN 978-1-62623-487-1),
copyright © 2020 Thieme Medical Publishers. All rights reserved. Usage subject to terms and conditions of license.
References
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[3] Pitts T, Bolser D, Rosenbek J, Troche M, Sapienza C. Voluntary cough produc-
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unilateral STN vs. GPi surgery: a retrospective analysis. Dysphagia. 2014; 29
(4):425–431
[6] Troche MS, Brandimore AE, Foote KD, Okun MS. Swallowing and deep brain
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[7] Hegland KW, Troche MS, Brandimore A, Okun MS, Davenport PW. Compari-
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[8] Troche MS, Brandimore AE, Godoy J, Hegland KW. A framework for under-
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251–260
[9] Troche MS, Okun MS, Rosenbek JC, et al. Aspiration and swallowing in Parkin-
son disease and rehabilitation with EMST: a randomized trial. Neurology.
2010; 75(21):1912–1919
[10] Wheeler KM, Chiara T, Sapienza CM. Surface electromyographic activity of
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[11] Silverman EP, Carnaby-Mann G, Pitts T, Davenport P, Okun MS, Sapienza C.
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[12] Troche MS, Rosenbek JC, Okun MS, Sapienza CM. Detraining outcomes with
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