LAST FINAL AS A FIRST YEAR!!!!!!!!!!! Flashcards
(33 cards)
Esophageal physiology
- major function is transportation
- vagus nerve primary
- peristalsis or “squeezing”
primary peristalsis
initiated by swallow
secondary peristalsis
- clean up crew, clears material from first peristalsis and also clears reflux
- dry swallow can also start it
- second swallow inhibits it
third form of peristalsis
- tertiary waves that don’t help move bolus
- ineffective waves (signal of disorder)
- happens frequently with reflux and stress
common esophageal disorder symptoms
- sticking of food in throat
- coughing during or after meal
- globus sensation
- hiccups (huge sign of reflux)
less common esophageal disorder symptoms
- chest pain
- shortness of breath
- respiratory symptoms
- odynophagia (painful swallowing)
structural esophageal disorders (mostly solid food dysphagia)
- strictures
- rings and webs
- hiatal hernias
- CP Bars
- diverticulums
motor abnormalities (motility)
- achalasia
- reflux
- scleroderma
- nonspecific esophagus
diverticulum
- Zenker’s most common
- pouch or sac that branches off the esophagus
- increase pressure secondary to coordination of muscles
esophageal web
- located in proximal or upper third of esophagus
- regurgitation, food sticking
- balloon dilation, diet
esophageal stricture/obstruction
- stricture-narrowing of esophagus
- caused by scar tissue that builds up
- obstruction, usually food blockage
- balloon dilation/PPI Tx/removal of obstruction
c-p bar (cricopharyngeal bar)
- hypertrophied c-p muscle due to overworked muscle, aging or dysfunctional UES
- myotomy/balloon dilation
intraesophageal reflux
- delay in peristalsis
- backflow of bolus in esophagus
gastroesophageal reflux
-backflow of stomach acid into esophagus
laryngopharyngeal reflux
-stomach acid back flowing all the way into larynx
which lung more susceptible to aspiration?
right. wider, more forward, and shorter
pleura
2 thin layers of tissue that surround lungs. like saran wrap that protects and cushions and helps lungs expand and contract
alveoli
clusters of ducts that contain air
when does swallow occur?
interrupts expiratory phase
swallow apnea
airway closes for fraction of a second. bigger bolus=longer apneic period. swallow and respiratory overlap and incoordination may lead to aspiration
mucociliary clearance
movement of mucous through the respiratory tract by movement of cilia that lines bronchi. moves foreign matter, dirt and membranes and prevents infection
who’s at risk for poor mucociliary clearance?
-head/neck cancer
-NPO
-trach/resp pts because not eating or drinking so dry mucous membranes and not making saliva
SALIVA IS KEY!!!!!!!!
pulmonary toilet
body’s natural way of clearing secretions. cilia/mucociliary clearance, coughing, spitting. HYDRATION IS KEY!!!!
artificial pulmonary toilets
suction, bronchoscopy, inhalers