Добавил:
kiopkiopkiop18@yandex.ru t.me/Prokururor I Вовсе не секретарь, но почту проверяю Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:

Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_4523_Библиотеки_им_академика_М_И_Перельмана

.pdf
Скачиваний:
0
Добавлен:
31.08.2026
Размер:
30 Мб
Скачать
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 doctorsoffice. Auditory comprehension was trained through following directions and auditory transfer activities.
Instructing and providing feedback on the use of prosodic features.
She initially demonstrated diculty with breath support, pitch, resonance, and loudness, but with ongoing treatment and feedback, she began to better monitor these speech skills.
Training in dicult 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 dicult 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 diculty, she eectively 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 testing3 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 inecient 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 eort, 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, eort, 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 dierence (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 HGs awareness of voice use and tension-holding patterns and to assess stimulability for improved reduced perilaryngeal tension and improved voice eciency. 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 eort 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 eort and vocal fatigue can very likely be related to inecient 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 eort, 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 eort 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 eort and pain are likely related to vocal eciency and laryngeal tension, rather than presence of cyst. As eort 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 patients 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 e­cient 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 eciency. b) Improved voice quality. c) Resolution of vocal fold lesion.
Answer: a is correct. As behavioral therapists, our primary goal should be to improve eciency 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 eciency 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 qualityby 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.
cient
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 eciency (i.e., reduced strain, and improved balance of phonatory airflow and easy, anterior oral resonance), and ulti­mately reduced vocal pain, vocal eort, 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 ecient voice production, and current voice use and tension-holding patterns.
Perilaryngeal massage to reduce, manage, and build aware­ness of inecient perilaryngeal tension-holding patterns. Awareness of tension was explored within the context of massage and in conjunction with voicing tasks.
Voice eciency 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 ecient and inecient 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 cient physiologic sensations (e.g., easy, ante­rior, oral resonance) or inecient 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 eor 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 ecient 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 inecient patterns, and negative practice throughout the course of therapy provided him with the tools to modif y back and forth between ecient and inecient 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 ecient 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 ecient 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 ecient voice production during spontaneous conversation with the clinicians, accurately and consistently produced ecient and inecient voice productions upon cue­ing, and reported consistent use of ecient voicing at work. He reported awareness that he would intermittently slipinto inecient voice use patterns, but was able to quickly modify back into an ecient 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 inecient 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 ecient 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 eect 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 Parkinsons 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 Parkinsons Disease
Michelle S. Troche, Jordanna M. Sevitz, and Alease M. Holden
68.1 Introduction
Aspiration pneumonia is the leading cause of death in Parkinsons 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 eective 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 eects to swallowing function, which are not observed with GPi DBS.
GB was referred to our outpatient clinic due to a progressive swallowing disturbance adversely aect 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. GBs 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 eortful 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 ineec­tive 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 pipeinto a facemask to assess the eectiveness of his voluntary cough. Various measures of cough eectiveness were made from the airflow data. Previous data suggested a predictive relationship between voluntary cough airflow and penetration/aspiration in neurodegenerative populations. GBs 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 Parkinsons 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. GBs 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 ecacy 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 ones tongue in between ones 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 patients high urge to cough when aspirating a positive or negative prognostic indicator?
a) Positive. b) Negative.
266
Dystussia and Dysphagia in Parkinsons 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 ecient 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 GBs 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 ineec­tive 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 eective 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 eortful 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 eortful swallow was paired with electromyography to provide biofeedback. Finally, GBs 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 eortful swallowing and Masako maneuvers, and voluntary coughs through a peak-flow meter to target increased cough eectiveness.
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 eectiveness 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 eective 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 eectiveness 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 Parkinsons 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
[1] Hegland KW, Okun MS, Troche MS. Sequential voluntary cough and aspira-
tion or aspiration risk in Parkinsons disease. Lung. 2014; 192(4):601–608
[2] Troche MS, Brandimore AE, Okun MS, Davenport PW, Hegland KW. De-
creased cough sensitivity and aspiration in Parkinson disease. Chest. 2014; 146(5):1294–1299
[3] Pitts T, Bolser D, Rosenbek J, Troche M, Sapienza C. Voluntary cough produc-
tion and swallow dysfunction in Parkinsons disease. Dysphagia. 2008; 23(3): 297–301
[4] Pitts T, Troche M, Mann G, Rosenbek J, Okun MS, Sapienza C. Using voluntary
cough to detect penetration and aspiration during oropharyngeal swallowing in patients with Parkinson disease. Chest. 2010; 138(6):1426–1431
[5] 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
[6] Troche MS, Brandimore AE, Foote KD, Okun MS. Swallowing and deep brain
stimulation in Parkinsons disease: a systematic review. Parkinsonism Relat Disord. 2013; 19(9):783–788
[7] Hegland KW, Troche MS, Brandimore A, Okun MS, Davenport PW. Compari-
son of two methods for inducing reflex cough in patients with Parkinsons disease, with and without dysphagia. Dysphagia. 2016; 31(1):66–73
[8] 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
[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
the submental muscles during swallow and expiratory pressure threshold training tasks. Dysphagia. 2007; 22(2):108–116
[11] Silverman EP, Carnaby-Mann G, Pitts T, Davenport P, Okun MS, Sapienza C.
Concordance and discriminatory power of cough measurement devices for individuals with Parkinson disease. Chest. 2014; 145(5):1089–1096
[12] Troche MS, Rosenbek JC, Okun MS, Sapienza CM. Detraining outcomes with
expiratory muscle strength training in Parkinson disease. J Rehabil Res Dev. 2014; 51(2):305–310
268