Bronchiectasis, Biology

Bronchiectasis:

Bronchiectasis literally means abnormal dilation of bronchi. It is a chronic  inflammatory condition which is characterised  by permanent dilation of bronchi and bronchioles due to obstruction and/or infection. As a result of  this there is a cavitation of bronchial and peribronchial tissue. Emphysema and pneumonia usually accompany bronchiectasis. 

Etiology:

Most cases follow recurrent episodes of  respiratory infections, obstruction due to foreign body, collection  of thick mucus as in bronchial asthma, chronic bronchitis, and cystic fibrosis. It could be caused due to congenital disorders of bronchi such as bronchomalacia, communicating  type of bronchial cyst or sequestrated lung. 

Pathogenosis:

Infection damages the bronchial wall and causes segmented areas of collapse. Similarly  the inhalation  of foregin body, aspiration of food or mucus plug in bronchus may occlude the bronchial lumen and cause segmental areas of collapse. The bronchi are dilated due to negative pressure by the collapsed segment and may show cylinderical,  fusiform or saccular dilatation. If the occlusion is  relieved before the stagnant secretions are infected and the bronchial wall is damaged, the bronchiectasis  the reversible. 

Nursing Assessment 

Child will present with persistant or recurrent cough with copious mucopurulent expectoration i.e. cough is more marked in some positions because of irritation due to infected secretions draining  into fresh areas of lung. Likewise the cough is more marked when child wakes up in the morning due to change of posture. Infants and young children often have significant wheezing. There may be haemoptysis and fever, poor general health with recurrent infection, loss of appetite,  irritability and poor weight gain.  

Posted Date: 10/26/2012 8:15:45 AM | Location : United States







Related Discussions:- Bronchiectasis, Assignment Help, Ask Question on Bronchiectasis, Get Answer, Expert's Help, Bronchiectasis Discussions

Write discussion on Bronchiectasis
Your posts are moderated
Related Questions
Explain the repair mechanisms of brain Scientists are just beginning to understand how these innate repair mechanisms might be harnessed to treat disease. On leading edge of th

Q. Incineration Treatment technologies for health-care waste? It used to be the method of choice for most hazardous health-care wastes and is still widely used. It is a high te

Q. List principles to keep in mind for designing the messages? o Develop a positive theme. Approaches are more effective when they promote positive messages that state clear

Which of the following is true for a primary motor cortex (M1) corticospinal interneuron that produces action potentials during movements of the big toe of the right foot? A. A

How has the importance of the brain evolved from fishes to reptiles? From the least to the most difficult brain structure, it is evident that the brain, from fishes to beings o

Explain briefly why 'greenhouse' gases lead to global warming. The greenhouse gases do not interfere with the short-wave radiation reaching the Earth from the sun but take up t


Adaptation Closely related to irritability is the capacity of living things for adaptation. You might have noticed that whenever you go outside in the bright sun after having

Based on your reading of the article "The Inner Life of the Genome" which of the following is a wrong statement regarding the organization of chromosomes within the nucleus? A.

Q. What is the cyclosporin? How are fungi related to this substance? Cyclosporin is a drug discovered in the 1970's that revolutionized organ transplantation in Medicine, It is