Upload
fakeywakey
View
24
Download
0
Embed Size (px)
DESCRIPTION
larynx
Citation preview
Post-LaryngectomyVoice Rehabilitation
Abigail Schnieders, MD
Matthew Page, MD
Overview
• Overview of Alaryngeal Speech
• Options for Post-Laryngectomy Communication
• Physiology of TEP
• Surgical Considerations in TEP
• Troubleshooting TEP
• Complications of TEP
The Saga Continues…
• After being laryngectomized by the infamous Dr. Goodwin, the previously discussed patient returns to clinic 3 months post op for cancer surveillance. He is found to be free of disease.
• However, he wishes to discuss options for being able to communicate again…other than with his pencil and paper.
• What are some of his options and what are the pros and cons of each?
Life expectancy of patients who previously underwent laryngectomy
• Importance of focusing on improved quality of life in post-laryngectomy patients.
Hotz, MA. Success and Predictability of Provox Prosthesis Voice Rehabilitation. Arch Otolaryngol Head and Neck Surg 2002; 128:687-691
Vocabulary
• The first thing that I learned when researching for this topic…
• The following are actual words:
• Laryngectomized
• Having undergone the process of a laryngectomy
• Laryngectomised
• Brittish spelling
• Laryngectomee
• One who has previously undergone a laryngectomy
History of Alaryngeal Speech
• 1873 – Billrothperformed first total laryngectomy
• Artificial larynx used post operatively with good success
• Issues of diplophonia and wound infection
Figure 113-1. Drawings from the original paper by Gussenbauer. Note the almost complete obstruction of the subglottic space within the cricoid cartilage. On the left are the first and second versions of the artificial larynx. In the center the postoperative situation is depicted, with a pharyngostoma to hold the pharyngeal extension of the artificial larynx
Cummings Otolaryngology, 5th edition. Chapter 113
Anatomy Quiz
Physiology of Speech
• Airflow causing vibrations of the vocal cord mucosa is best described as which phenomena?
• Bernoulli Effect
Physiology of Speech
• Needed for Speech
• Bellows
• Sound source
• Vocal tract
• The least affected by TL?
Anatomy
• Suprahyoidmusculature separated from superior border of hyoid
• Separation of pharyngeal constrictors at oblique line of thyroid cartilage
• Closure of these muscles as the external layer
Baileys Head and Neck Surgery. Chapter 123.
Post-TL voice restoration
Artificial Larynx Esophageal Speech TEP
Mechanism Mechanical sound introduced into the vocal tract
Air injected into esophagus and then propelled into PE segment
Tracheal air exhaled into pharynx through fistulous tract
Advantage Rapid learning; doesnot interfere with acquisition of other forms of speech; low cost; loud
Less conspicuous; hands free; natural sound; patient independent of devices
Natural phrasing of voice; more acoustically normal speech;
Disadvantage Dependence on batteries; mechanical sound; loss of handsfree speech;appearance; lack of insurance
Low fundamental frequecy (~65 Hz); short duration; low acquisition rate; extended learning period
Tract can be difficult to maintain; salivary reflux into trachea
Successful use ~100% 5-30% 40-90%
Esophageal Speech
• Air injected into esophagus or stomach
• Expelled into PE segment causing mucosal vibrations
• ~80 mL of air compared to 3+ liters of air
• 1-2 sec of phonation time compared to ~ 20 sec
• Success rates ~ 40-60%
Cummings Otolaryngology, 5th edition. Chapter 113
Mechanical Speech
• Electrolarynx
• Electrically generated vibrations pass through skin
• Vibrations formed into speech within the vocal tract
• Cummings Otolaryngology, 5th edition. Chapter 113
TEP
• Tracheoesophagealpuncture• One way valve allowing
exhaled air to pass into pharynx. This airstream vibrates the mucosa of the upper PE segment.
• Similar physiologic principles of normal speech • Efficient air flow source• Natural phrasing and varied
voice efforts
• When the air soucesubsides, the valve closes and prevents aspiration of secretions
Emedicine. Laryngectomy Rehabilitation.
TEP
• Tracheostoma valve• Closes the stoma
when phonating• Higher airflows for
voice close a valve diaphragm
• Hands free speech
• Cannot be used in patients with COPD
• Effective in only 25% of laryngectomypatients
Voice Prostheses• 1970-1980 • Creation of surgical fistula between trachea and neopharynx• Aspiration problems• Trade off between voice quality and aspiration
• 1972• Mozolewski published results from first voice prostheses
• 1980• first Blom-Singer prosthesis• “duckbill”
Baileys Head and Neck Surgery. Chapter 123
Low flow TEP
• Reduction in airflow resistance requires less effort for voicing
• Increased diameter of prosthesis
• Increased loudness
• 20 Fr
• Fine line between voice quality and aspiration
Baileys Head and Neck Surgery. Chapter 123
Voice Prostheses
• Indwelling
• Provox
• Replaced by clinician
• Robust construction ensures longer life span
• Determined by leakage of fluids around prosthesis or increased airflow resistance
• Success independent of patient age and general health
• Non-indwelling
• Duckbill; Panje prostheses
• Removed by patient
• Daily maintenance includes cleaning and flushing
• Need manual dexterity
Hotz MA. Success and Predictability of Provox Prosthesis Voice Rehabiliation. Arch Otolaryng Head Neck Surg 2002; 128:687-691
TEP: Patient Candidacy
Relative concerns that may reduce the success of voice restoration
Pharyngeal stricture with symptomatic dysphagia
Radiation therapy exceeding 6,500 cGy
Malnutrition
Diabetes
Dementia
Severe COPD
Baileys Head and Neck Surgery. Chapter 123
TEP: Patient selection
• Relative contraindications
• Impaired mental status
• Decreased manual dexterity
• Bilateral severe SNHL
• Limited pulmonary function
TEP: Preoperative evaluation• Esophageal insufflation test
• Placement of catheter through nose into upper GI
• Air insufflated and released as speech
• Estimates the possibility of pharyngeal constrictor spasm
• Esophageal distension occurs with air ingestion
• Reflexive increase in tone in constrictor muscles
• Air trapping can result in gastric filling, distension
• However, no reliable data showing the incidence of patients who will succeed
• Four scenarios:• Fluent, sustained speech
• Indicates relaxed musculature
• Breathy, hypotonic voice • Absence of muscle tone
• Intermittent production of effortful speech• Hypertonicity• Gastric distension
• Aphonia• Complete spasm
Baileys Head and Neck Surgery. Chapter 123
Surgical Considerations in Voice Rehab
Primary prosthetic voice restoration: surgical considerations
Refinements in total laryngectomy techniques for optimizing prosthetic voice restoration
Cricopharyngeal myotomy to prevent hypertonicity of PE segment
Suturing of trachea in separate fenestra in inferior skin flap to create stable stoma
Sectioning of sternal heads of SCM to prevent “deep” stoma
Low-tension closure of pharyngeal mucosa to prevent “pseudo-vallecula” formation
Intra-operative measures to improve prosthetic voice
• Prevention of hypertonicity
• Excess tone in constrictors
• Tone exacerbated with inflation of air, blocking overall airflow
• Anterior myotomy of CP
Intra-operative measures to improve prosthetic voice
• Creation of optimally contoured stoma• Ideal stoma
• Same diameter as trachea• Adequate to access prosthesis
• Avoid laryngetomy tube
• Stoma stenosis• Dehiscence of trachea from skin
• Separate fenestra avoids trifurcations
• Cranial tracheal ring should remain intact• Distribution of collagen fibers act as
“spring” to stent the trachea open
• If disrupted, trachea will collapse
• Contraction of tracheocutaneoussuture• Meticulous suturing
• Optimal coverage of exposed cartilage
Intra-operative measures to improve prosthetic voice• Prevention of a deep
stoma• Some rehabilitation
devices rely on peristomalattachments• Heat and moisture
exchanger
• Automatic speaking valve
• Cutting SCM heads will allow for flat peristomal area
Intra-operative measures to improve prosthetic voice• Pharyngeal mucosa
closure
• Avoidance of tension on closure
• T shaped closure• Reinforcement of
trifurcation prevents fistula
• Avoid “pseudovallecula” which can occur with vertical closure
Timing of TEP placement
Primary vs Secondary Prosthetic Voice Rehabilitation• When is the ideal time to place the TEP?
• During initial surgery
• vs
• Delayed procedure
Timing of TEP placement in radiated patients undergoing TL
• 30 patients underwent laryngectomy after failing chemoRT• 20 underwent primary TEP• 10 underwent secondary
procedure
• 10/20 fistulized in the primary TEP group• Compared to 1/10 in the
secondary group
• Median time to fluent speech • 63 days in primary group• 125 days in secondary group
• 100% of patients acquired fluent speech
Primary TEP
Secondary TEP technique
• Endoscopic technique• Puncture location 5mm
from superior trachea
• 14 gauge needle inserted under direct visualization
• Puncture through posterior esophageal wall
• Wire inserted and guided through oral cavity
• Dilation of puncture site
• Threading of urethral catheter retrograde
• Fitting of prosthesis in 2 days
TEP placement
• Measurement of distance across puncture site
• Insertion of prosthesis and securement above tracheostoma
Complications of Voice Prostheses• Epidural abscess or vertebral
osteomyelitis secondary to violation of posterior esophageal wall during secondary TEP
• Mediastinitis secondary to dissection of party wall
• Loss of the puncture site by dislodgment of the catheter placed at the time of puncture
• TEP dilation
• Partial or complete extrusion of the prosthesis
• Migration of the puncture site• Formation of granulation
tissue• Stomal or
pharyngoesophageal stenosis• Aspiration of saliva and foods
through puncture site• Esophageal prolapse• Tracheostoma prolapse• Aspiration of prosthesis
• 3-5%
Tracheoesophageal Speech
• Similar to laryngeal speech, pulmonary driven
• Air driven through one way valve into PE segment
• Maximum phonation times ~ 16-17 seconds
• Acoustic analysis
• Comparison of TE speech with laryngeal speech
• Fundamental frequency, intensity, frequency and rate are similar
• TE speech superior to esophageal speech in volume, phrase length, ease of use
• Rated most desirable form of alarygneal speech by SLP, patients and listeners
• In the presence of noise, TE speech has a lower rate of listener intelligibility
Tracheoesophageal Speech
• True or False
• There is no gender difference in post-laryngectomy anatomy and physiology of the sound source.
• TRUE
• Male and female voices do not differ in fundamental frequency post laryngectomy
• 100Hz
Prosthesis Maintenance
• Lifespan of prostheses
• ~10-18 months in US
• Fluid leakage main cause of failure
• Transprosthetic leakage
• Periprosthetic leakage
• A patient comes into clinic 2 months after having a TEP placed, feeling like there is a lot of leakage around the prosthesis.
• Which of the following is the most likely explanation for this leakage?
• Usual wear and tear of valve
• Too-long prosthesis
• Leakage of fluids through the valve due to incomplete closure
• Tumor recurrence
• Which of the following is an appropriate initial treatment for the aforementioned condition?
• Nystatin swish and swallow
• re-fitting prosthesis to puncture site
• Removal of prosthesis and replacement in 6-8 weeks
• Endoscopy with biopsy
Prosthetic leakage
• Transprosthetic
• Most common cause of TEP leakage
• Incomplete valve closure
• Candida
• Negative pressure
• Periprosthetic leakage
• Inappropriate prosthetic length
Candida growth and TEP
• Predominant species
• Candida albicans (41%)
• Antifungals
• No evidence to support routine use
• MIC of isolates suggest pansensitivity to nystatin
• Probiotics
• Prevent growth of candida
• Proven in vivo and in vitro
Negative pressure aerophagia
• Deep breathing creates a negative pressure within the thorax
• Normally, UES prevents air from flowing into the upper GI
• Prosthesis is present beneath the UES
• Valve opens and air enters the esophagus
• Complaints of aerophagia
• Easier valve opening and delayed closure
Provox Acti-Valve
• Teflon like material prevents candida growth
• Built in magnets counteract negative pressure in the esophagus
• Group of patients requiring early replacement due to leakage
• Median life span of 336 days
platonmedical.co.uk
Periprosthetic leakage
• Careful checking of the prosthetic length required prior to replacement
• Pulling at tracheal flange to assess if the prosthetic is correct length
• Typical progression involves shortening of the party wall with healing
• Tissue inflammation and atrophy
• Resolution of tissue edema
• Moving prosthesis 2-3mm in the AP direction is correct amount
• Indicates little to no pressure on the tissue
• > 3mm movement is an indication to shorten length of prosthetic
Diagnosis of TEP failures
• Recommendation for clinical protocol for troubleshooting prosthesis problems
• Adverse events occuring in about 1/3 of patients
• Early intervention can prevent further problems
Diagnosis of TEP failures
• Prosthesis failure:
• Position
• Size
• type
• patency
• Reflex pharyngeal constrictor spasm
• Nonvibrating pharyngoesophageal segment:
• radiation-induced
• edema
• reconstructed segment
• Puncture closure
• Inadequate air supply:
• decreased respiratory support
• improper stoma occlusion
Algorithm for solving TE wall atrophy
• Fistula shrinkage
• Removal of prosthesis and replacement with feeding tube
• Requires cuffed cannula to prevent aspiration
• If wall is thinner than 4mm…
• A 4mm prosthesis will not create adequate seal
• Silicon washer
• Used as a spacer and placed between the tracheal flange and mucosa
• 0.5mm thick
• Adheres to mucosa via surface tension
Algorithm for solving TE wall atrophy• Purse string suture• Used if tissues are not
too atrophic
• 3-0 vicryl used to pursestring the fistula, prosthesis is replaced and suture tightened around to secure
• Good short term success rates
• Long term success variable
Algorithm for solving TE wall atrophy
• Augmentation of party wall
• Bioplastic
• Collagen
• Fat
• Granulocyte/ macrophage colony stimulating factor
• Creation of sterile inflammation
Algorithm for solving TE wall atrophy
• Fistula closure
• If failure of all other measures
• Must dissect and close all 3 layers
• Complete epithelialization within 6 months
• Fascial graft or pedicles SCM flap
• Re-puncture with immediate prosthesis placement after 6 weeks
• Occasionally, pectoralis or free flap must be used to close a large defect
Puncture site infection
• ~10% of patients
• Treatment with broad spectrum antibiotic
• Prosthesis left in place
• Potentially replaced with a longer prosthesis
• Avoid removal so that the fistula does not close
Fistula hypertrophy
• Anterior• Excessive mucosal granulation
• More common in patients requiring a laryngectomytube
• Too-short prostheses
• May lead to overgrowth of tracheal flange• Stoma-plasty or laser resection of scar tissue
• Posterior• “esophageal pocket”• Leading to strained voice or bleeding during
valve cleaning• Diagnosed with a pediatric endoscope through
the valve• Can see mucosal overgrowth on esophageal side
• Insertion of a longer prosthesis • Leading to fistulization of the pocket• May require retrograde insertion
Hypertonicity of PE segment
• Most important reason for failure to develop fluent speech• May be prevented with a CP myotomy
• Evaluation with videofluoroscopy• Treatment with intensive speech
therapy
• Chemodenervation• Identification of hypertonic segment
with videofluoroscopy• Transcutaneous injection into
constrictor• Long lasting effect
• Biofeedback mechanism
• Post injection VFS shows reduction in mass of constrictors
Hypotonicity of PE segment
• Hypotonicity
• Leads to whispered voice
• Excessive bulging of the PE segment
• Seen with plexus pharyngeal neurectomy
• External pressure
• Digital
• SCM sling
Prosthesis Extrusion
• Partial extrusion can result in a false passage
• Can result from pressure necrosis from short prosthesis
• Longer prosthesis can bridge the passage and allow for spontaneous healing
• Complete extrusion
• Inability to locate the prosthesis should prompt CXR
• Endoscopic removal in airway
• Allow for passage if in GI
TEP Emergencies
Emedicine: laryngectomy rehabilitation
TEP emergencies
• Inability to insert the esophageal flange fully
• Results in increased voice resistance
• Tract will close from the esophagus within 24 hours
• May re-dilate and stent with a catheter
• Aspiration
• Commonly when patients attempt to replace TEP
• Most common location is right upper mainstem
• Dyspnea
• Aspiration of secretions
• Detailed instructions should be given in case of aspiration
• Avoidance of deep inhalation
• Retrieval with topical anesthesia and flexible bronch
References
• Hotz, MA. Success and Predictability of ProvoxProsthesis Voice Rehabilitation. Arch Otolaryngol Head and Neck Surg 2002; 128:687-691
• Baileys Head and Neck Surgery. Chapter 123.
• Cummings Otolaryngology. Chapter 113.
• Lombard LE. Emedicine: Laryngectomy Rehabilitation.