Gen9MD Community Forum.


Join the forum, it's quick and easy

Gen9MD Community Forum.
Gen9MD Community Forum.
Would you like to react to this message? Create an account in a few clicks or log in to continue.
Gen9MD Community Forum.

off-class discussion.

Tahun 3.kita separuh doktor.
Search
 
 

Display results as :
 


Rechercher Advanced Search

May 2022
SunMonTueWedThuFriSat
1234567
891011121314
15161718192021
22232425262728
293031    

Calendar Calendar


You are not connected. Please login or register

Describe pathogenesis of bronchiectasis

Go down  Message [Page 1 of 1]

1Describe pathogenesis of bronchiectasis Empty Describe pathogenesis of bronchiectasis Mon Mar 12, 2012 4:55 am

ismipahmie

ismipahmie
Star Member
Star Member

Bronchiectasis

Definition: Persistent dilatation of the medium size bronchi and bronchioles with chronic inflammation of their walls

Aetiology:

1. Septic bronchopneumonia

i. The walls of the inflamed bronchi are weak and easily pulled by the negative pressure of the thorax
ii. The walls of the bronchi are weak due to protolytic enzymes release from inflammatory reaction
iii. There is interference of cough reflex leading to exudates retention
iv. The surrounding alveoli become fibrotic and pull on the weak bronchi

2. Bronchial obstruction

i. Bronchial obstruction leads to collapse of the alveoli due to air absorption. This increases the negative pressure in the thorax pulling on the weak bronchi
ii. Bronchial obstruction is predisposed to infection leading to septic bronchopneumonia.
* The walls of the inflamed bronchi are weak and easily pulled by the negative pressure of the thorax
The walls of the bronchi are weak due to protolytic enzymes release from inflammatory reaction
There is interference of cough reflex leading to exudates retention
The surrounding alveoli become fibrotic and pull on the weak bronchi

3. Congenital lesions
i. Kartegener`s syndrome:consists of situs invertus sinusitis and bronchiectasis. This is due to defective in ciliary movement leading to ineffective bacterial removal causing infection
ii. Mucoviscidosis: there is thick mucous secretion leading to bronchial obstruction promoting infection
iii. The above two condition leads to septic bronchopneumonia

Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum