non suppurative acute inflammation Flashcards
What is the severity of Catarrhal inflammation?
Mildest form.
What characterizes Catarrhal inflammation?
Excessive mucus secretion.
Where does Catarrhal inflammation typically occur?
Mucous surfaces e.g. nose, bronchi, GIT.
Provide examples of Catarrhal inflammation.
- Common cold
- Some forms of colitis
What are the clinical presentations of Catarrhal inflammation?
Excessive mucous secretion (Running nose, diarrhea).
What is the severity of Serous inflammation?
Mild form.
What characterizes Serous inflammation?
↑↑ Clear watery fluid + variable protein content & no fibrin.
Where does Serous inflammation typically occur?
Serous cavities & skin.
Provide examples of Serous inflammation.
- Blisters of burn
- Viral infection
- Ankle sprain
What is the severity of Serofibrinous & fibrinous inflammation?
Moderate.
What characterizes Serofibrinous & fibrinous inflammation?
Exudate fluid rich in fibrin, forming threads or fibers.
Where does Serofibrinous & fibrinous inflammation typically occur?
Serous cavities, joints, lung alveoli.
Provide examples of Serofibrinous & fibrinous inflammation.
- Lobar pneumonia
- Fibrinous pericarditis
What does the gross appearance of fibrinous exudate resemble?
‘Bread & Butter appearance’.
What does the microscopic examination of Serofibrinous & fibrinous inflammation reveal?
Fibrin network + inflammatory cells mainly neutrophils.
What is the severity of Membranous (Pseudomembranous) inflammation?
Severe.
What characterizes Membranous inflammation?
Formation of false membrane on mucous surface.
Where does Membranous inflammation typically occur?
Mucosal surfaces.
Provide examples of Membranous inflammation.
- Diphtheria
- Bacillary dysentery (Shigella)
What is the pathogenesis of Membranous inflammation?
Bacteria on mucosal surface & its exotoxins cause patchy mucosal necrosis & acute inflammation of submucosa.
What does the gross appearance of a membranous exudate look like?
Superficial dull opaque yellowish white membrane which bleeds when peeled off.
What does the microscopic examination of Membranous inflammation reveal?
Necrotic mucosal cells + Bacteria + acute inflammatory cells + fibrin network.
What characterizes Haemorrhagic inflammation?
Exudate fluid rich in RBC’s.
What is Haemorrhagic inflammation usually associated with?
Vascular damage.
