5.2 - ESOPHAGEAL DISORDERS Flashcards
What is Achalasia?
3
Primary esophageal motility of unknown cause
Insufficient lower esophageal sphincter (LES) relaxation
Loss of esophageal peristalsis
What are possible causes of Achalasia?
4
Hereditary
Degeneration
Autoimmune factors (antibodies)
Infectious factors
What are three symptoms of Achalasia?
Dysphagia for solids + liquids
Regurgitation
Chest pain
What are Diffuse Esophageal Spasms? (2)
What can they cause? (2)
Repetitive, high amplitude contractions of smooth muscle portion of the esophagus
The striated portion and LES relaxes normally
//
Histopathology (tissue changes)
Muscular hypertrophy (enlargement)
What is a colloquial name for Diffuse Esophageal Spasm?
‘Cork-screw esophagus’
What is Nutcracker Esophagus?
2
A variant of Diffuse Esophageal Spasm (DES)
Very high amplitude contractions in the distal (lower) esophagus
What are Strictures?
Any loss of lumen area within the esophagus
What is the width of a typical esophagus?
20 mm in diameter
What is the predominant clinical symptom of strictures?
When does this become “official”?
Dysphagia
When the lumens diameter is less than 15 mm.
What is Schatzki Ring?
What causes it?
Narrowing (stricture) of only the lower part of theesophagus.
The narrowing is caused by a ring ofmucosal/muscular tissue
What is the danger with GERD?
Mucosal damage produced by the abnormal reflux of gastric contents into the esophagus
What are the classic symptoms of GERD?
7
Frequent + persistent heartburn
Persistent sore throat
Hoarseness
Chronic cough
Asthma
Heart-like chest pain
A feeling of a lump in the throat
What causes GERD?
1+3
LES barrier impairment
- Relaxation of LES
- Low resting LES pressure
- Increased gastric pressure
How will chronic GERD affect swallowing?
2
Decreased clearance of refluxed materials from esophagus
Decreased esophageal mucosal resistance
What issues does GERD cause?
3
Erosion
Ulcers
Cancer (Barrett’s Esophagus)