Dysphagia Flashcards
Dysphagia results in: 5
- Dehydration
- starvation
- aspiration pna
- airway obstruction
- death
dysphagia anatomy is comprised of: 4
oral cavity
pharynx
larynx
esophagus
Normal swallowing has three phases:
- oral phase (oral preparatory, oral propulsive)
- Pharyngeal phase
- Esophageal phase
Oral cavity anatomy.
Name muscle and associated nerve:
1. Lip closure:
2. Tongue: divided into ___ and ___
- Orbicularis oris (CNVII)
- Intrinsic muscles CN XII (hypoglossal)
Extrinsic muscles CN XII & CN IX (Glossopharyngeal)
Name the four intrinsic muscles of the tongue
- superior longitudinal
- verticalis
- transversus
- inferior longitudinal
All CN XII - hypoglossal
name the 4 extrinsic muscles of the tongue (with nerves)
- genioglossus - CN XII
- Hyoglossus - CN XII
- Palatoglossu - CN IX
- Styloglossus - CN XII
_____ is the perception and cognition regarding nutritional materials prior to introduction to the mouth.
Anticipation
Describe the four concepts associated with anticipatory phase of swallowing
- size of bolus
- fine motor control for placing bolus on fork/spoon, sipping from straw/cup
- instructions for feeding
- speed presented to mouth
Oral phase is divided into two phases for solids:
and two phases for liquids:
Liquids:
1. Oral preparatory phase - food mixed with saliva. Tongue keeps it in a swallow-ready
2. Oral propulsive phase - bolus from oral to pharynx through faucial isthmus
Solids
1. Stage I transport - bite moved into a chewing position. Tongue rotates and deposits on occlusal surface of lower molar teeth
2. Stage II transport - swallow ready consistence positioned on tongue and squeezed into pharynx
Food in mouth stimulates mechanoreceptors for ____ nerve thereby activating ______
trigeminal nerve - activating central pattern generator for mastication. (saliva secreted helps food break down and stimulate taste buds) Consistency continuously monitored by oral mechanoreceptors
In the pharyngeal phase of swallowing,
_____ propels food from the mouth to the pharynx without compromising the airway.
This occurs by blocking _____ and _____.
_______ relaxes.
_____ occurs
- the involuntary phase,
- blocking nasopharynx: soft palate is pulled upward to create passage for food.
- Blocking trachea - epiglottis moves and covers opening to larynx and larynx moves against the eipglottis creating a tight seal.
- The upper esophageal sphincter relaxes as food enters the esophagus
- Peristalsis occurs and propels food through the open sphincter into the esophagus
What is swallow apnea
breathing pauses briefly during swallow. Normal is 0.3-1.0sec
- The esophageal phase is an ____ phase.
- bolus continues as _____ through ____ into stomach
- Assisted by ____ and requires relaxation of ____
- Reflux of the stomach prevented by ______ and ____
- Involuntary phase
- primary peristaltic wave through the lower esophageal sphincter (LES)
- gravity; relaxation of the LES
- tonic contractions of LES; reflex esophageal swallowing triggered by distension. (secondary peristalsis)
Tongue elevation and propels bolus to pharynx and soft palate elevation to seal nasopharynx marks distinction between what two phases?
Oral and oro-pharyngeal
Upper esophageal sphincter relaxes, bolus passes to esophagus marks start of what phase and end of what phase
start of esophageal phase and end of oro-pharyngeal phase
Oro-pharyngeal phase lasts approx:
esophageal phase lasts approx:
1 sec
8 seconds
Name the major nerves of dysphagia
V, VII, IX, X, XII
Dysphagia:
Name the 4 major muscles associated with Trigeminal nerve
- masticatory muscles
- mylohyoid
- tensor veli palatini
- anterior belly of digastrics
Dysphagia:
Name the 3 major muscles associated with facial nerve VII
- facial muscle
- stylohyoid
- posterior belly of digastrics
Dysphagia
Name the major muscle associated with glossopharyngeal nerve (IX)
stylopharyngeus
Dysphagia
Name the 6 major muscles associated with the Vagus nerve (X)
- Levator Veli Palatini
- Palatopharyngeus
- Salpingopharyngeus
- Intrinsic laryngeal muscles
- Cricopharyngeus
- pharyngeal constrictors
Dysphagia
Name the 6 major muscles associated with the hypglossal nerve (XII)
- intrinsic tongue muscles
- hyoglossus
- geniohyoid
- genioglossus
- styloglossus
- thyrohyoid
Controlled by:
1. Mastication, swallowing and respiration:
2. CPG pharyngeal swallowing:
3. swallowing and airway protection
4. Sensation:
5. Contraction of striated muscle fibers in oropharynx.
- Name the LMN cell bodies of swallowing
- central pattern generagtors (CPG)
- Brainstem reticular formation
- sensory info (see 4)
- Maxillary and mandibular branch of CN V, IX, X to a CPG located in nucleus tractus solitarius of medulla
- MOtor neurons in BS produce contraction of striated muscle fibers in oropharynx
- Cell bodies: CN V, VII, XII and nucleus ambuguus (IX and X)
Swallowing requires ____ muscles
> 50
Nucleus ambiguus is comprised of what nerves
IX and X cell bodies
Swallow in infants:
1. lower jaw is: 2
2. oral cavity is: 2
3. Buccal pads referred to as:
4. Larynx rests:
5. Epiglottis overlaps:
- retracted, smaller
- smaller, filled with tongue
- “sucking pads”
- higher in neck
- soft palate
____ and ____ descend during infancy
hyoid bone and larynx
Explain suckling and sucking with regard to swallow in infants
suckling begins as backward and forward licking motion, then labial strength increases into an upward and downward movement, then jaw movement pattern evolves.
describe oral phase in infants as it progresses:
6-9 months:
~24 months:
24 months:
6-7 years:
- early phasic up-down evolves into diagonal movement
- rotary chewing pattern
- mature oral motor control for swallowing liquids
- mature chewing pattern
Swallow in elderly:
(10)
- decreased labial strength, lingual strength, coordination
- slower oral manipulation of food
- reduced dentition - increased mastication time and reduced efficiency
- Increased latency - pharyngeal bolus entry until onset of laryngeal elevation
- decreased amplitude of esophageal paristaltic waves
- increased incidence of sliding hiatus hernia
- altered respiratory patterns
- early onset, longer duration of swallow apnea
- increased swallow initiation in inspiratory phase
- increased respiratory rate after swallow
Increased frequency of laryngeal penetration in older adults on consecutive swallow is ____
not always pathological (it might be a normal variatioN)
9 signs of neurogenic oral dysphagia
- drooling
- leakage of food/liquid
- food residue in the mouth
- pocketing of food in the mouth
- reduced bolus formation and transfer
- poor mastication
- slowness of eating/drinking
- reduced velar closure/nasal regurgitation
- watery eyes/runny nose during PO intake.
6 things that might be hindered in oropharyngeal dysphagia
- maneuvering solids and liquids
- determining if bolus is ready for swallow
- contain in the oral cavity
- leakage from lips or pharynx
- propel food
- initiate swallowing
mastication deficits include tongue weakness or incoordingation
Type of dysphagia?
impaired swallow initiation
ineffective bolus propulsion
retention in the pharynx after swallowing
Impaired opening of Upper esophageal sphincter, UES
pharyngeal dysphagia
Velopharyngeal incompetence: inability to close nasopharynx
Result: nasal regurgitation
What is velopharyngeal incompetence?
Result?
inability to close nospharynx
nasal regurgitation
5 pharyngeal neurogenic sx
- coughing with swallow
- regurgitation of foods/liquids through the nose
- wet/gurgly voice
- complaint of something stuck in throat
- Hx of aspiration pna
_____ is a common comorbidity with dysphagia
GERD with heartburn and retrosternal pain
____% of thoracic chest pain can be esophageal disorders
50%
What is globus sensation with relation to dysphagia
causes?
feeling a “lump inthe throat” in absence of actual retention. Causes: distal esophageal lesions, hiatal hernia