TREATMENT OF DYSPHAGIA
IN ALZHEIMER’S PATIENTS
Mollie Mathews & Kristy Delome
A. GENERAL CONSIDERATIONS WHEN FEEDING DIFFICULTIES ARISE:
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Investigate possible physical causes of feeding problems such as teeth,
gums, dentures, digestion, and medication (which can affect appetite or
cause dry mouth).
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During mealtime, noise and distractions should be minimized to help the
patient focus on the task of eating.
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Table settings should be as simple as possible. Replace forks, plates,
and glasses with spoons, bowls, cups with handles, or other adaptive and
assistive devices. The occupational therapist may be consulted for
these issues.
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Serving one food at a time may reduce frustration and confusion experienced
by Alzheimer’s patients when they are faced with too many foods served
at once.
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If patients can no longer use utensils, finger foods may be served, or
they may have to be fed by a caregiver.
B. SENSORY-MOTOR INTEGRATION PROCEDURES (for patients with apraxia
of swallow, tactile agnosia for food, delayed onset of the
oral swallow, and reduced oral sensation):
The following techniques are used to heighten sensory awareness
before the swallow attempt. They are considered compensatory
when used with Alzheimer’s patients, and should be used as part of a maintenance
program by the caregiver or the patient.
1. Increasing downward pressure of the spoon against the tongue as the
bolus is delivered into the mouth.
2. Changing bolus characteristics.
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present sour bolus. (ex. 50% lemon juice:50% barium)
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present cold bolus or textured bolus.
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Present bolus requiring chewing.
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Present a larger volume bolus (3 mL or more).
3. Thermal-tactile stimulation
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Rubbing faucial arches with a size 00 laryngeal mirror, which has been
submerged in crushed ice.
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Presented prior to the patient’s swallow attempt, which will accelerate
oral acceptance and initiation of oral stage.
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This technique is considered compensatory in Alzheimer’s patients because
it alerts the Central Nervous System, thus lowering the threshold of the
swallow center. Using this technique over an extended period of time
will not improve the onset of the oral swallow and the trigger of the pharyngeal
swallow. Rather, the purpose of the stimulation is to heighten the
sensitivity for the swallow in the CNS so that when the patient voluntarily
attempts to swallow, he/she will trigger a pharyngeal swallow more rapidly.
Some patients do not respond to food being placed in the mouth until they
place it in their mouth. This may provide the patient with additional
preliminary sensory input, alerting the brain that something is coming
to the mouth.
C. THERAPEUTIC PROCEDURES FOR REDUCED LATERAL TONGUE MOTION (to increase
range of motion and improve oral transit time):
1. Open mouth as wide as possible and elevate front of the tongue,
and hold for one second. Elevate back of tongue, and hold for one
second.
2. Stretch tongue to each side of the oral cavity as far as possible,
holding for one second on each side.
3. Repeat procedure 5-10 times each day, 4-5 minutes each time.
D. COMPENSATORY AND THERAPEUTIC PROCEDURES FOR PHARYNGEAL SWALLOW DELAY:
1. Thermal-tactile stimulation and changing bolus characteristics
(therapeutic procedure is mentioned above under section B.)
2. Postural Techniques (compensatory procedures):
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Limit the amount of each bolus so the bolus can be held in the pharyngeal
recesses and the volume is not so large that it will overflow into the
open airway. Attention must also be paid to the speed at which the
patient swallows. Adequate amount of time must be given so that the bolus
insured to clear pharynx (don’t want overflow into the airway).
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Head-Tilt Forward- Protects airway more, and in some populations, it widens
the vallecular space and increases the chance that the bolus will hesitate
in the valleculae during the delay rather than falling into the open airway.
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Chin-Down Posture- Pushes the anterior pharyngeal wall posteriorly
with the chin down. Tongue base and epiglottis are pushed closer
to the pharyngeal wall. The airway entrance is narrow, and vallecular
space is widened.
E. MOTOR ABNORMALITIES IN THE PHARYNX:
1. Reduced Posterior Movement of the Tongue
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Effortful Swallow:
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Increases posterior motion of the tongue base during pharyngeal swallow,
thus improving a bolus clearance from the valleculae
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Clinician instructs the client to squeeze hard with all muscles, which
improves pressure exerted by the oral tongue at all points along the palate
and at the tongue base, and will increase tongue base movement.
2. Bilateral Pharyngeal Weakness
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Therapeutic Procedures:
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No direct therapy technique improves pharyngeal contraction at all levels,
however the Masako or Tongue Holding Technique is sometimes used.
This technique may not be appropriate for Alzheimer’s patients, because
they typically exhibit a delay in the pharyngeal swallow, and this technique
usually introduces a slight increase in pharyngeal delay in normal subjects.
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Compensatory Procedures:
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Alternating liquid and semi-solid or solid swallows so the liquid washes
the thicker consistency through the pharynx.
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Limit diet to liquids or a thin paste materials requiring less pressure
to clear the pharynx.
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Follow each swallow of food or liquid with several repeat dry swallows.
3. Reduced Laryngeal Elevation (therapeutic procedures)
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Mendelson Maneuver:
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Designed to increase the extent and duration of laryngeal elevation and
thereby increase the duration and width of cricopharyngeal opening.
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(This procedure may not be appropriate for Alzheimer’s patients who are
notably cognitively impaired, since it requires the ability to follow simple
instructions.)
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Clinician instructs patient to swallow saliva several times and pay attention
to their neck as they swallow, noting if they can feel something lift or
lower. On the next swallow, the client is directed to hold the elevation
for several seconds and then to let it drop.
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Supraglottic Swallow:
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Designed to close the vocal folds before and after the swallow, thus protecting
the trachea from aspiration.
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Patients must be able to follow simple directions without becoming upset
or confused.
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(Therefore this procedure may not be appropriate for Alzheimer’s patients
who are notably cognitively impaired.)
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Laryngeal Elevation Exercise-The Falsetto Exercise:
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Designed to elevate the larynx to the level it would reach during the swallow.
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The patient is asked to slide up the pitch scale as high as possible to
a high, squeaky voice.
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When the patient reaches the top of the scale, he/she should hold the high
note for several seconds with as much effort as possible.
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The patient may take a hand and gently pull up on the larynx to assist
laryngeal elevation during this procedure, but not during swallowing attempts,
because the hand may get in the way of the swallow.