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
Getting ready to grow bacteria Secure two or three dozen shallow glass dishes. The glass coasters used to stay bed castors from marring floors will do. Cut 5 cm squares of wind

Q. Concerning their permeability how are membranes classified? Membranes can be classified as permeable, impermeable, selectively permeable or semipermeable. An impermeable

Define Prevalence of Weight Management? WHO (1998) estimates that in developing countries about 245 million adults are moderately underweight and 93 million severely underweigh

Class Holothuroidea Body cucumber-such as; no arms; no spines; no pedicellariae; ossicles minute and embedded in muscular wall; anus present; tube feet along with suckers; am

A foreign DNA has to target a precise chromosomal site and integrate with the host DNA. Are the methods of gene therapy strong enough to produce desired expression without mistakes

If a solution has a pH of 7.5, what would its new pH be if the concentration of H 3 O ions in the solution were increased by 100 times? Explain your reasoning. As a tenfold inc

Q. How execute the two complementary nucleotide chains of the DNA facilitate the replication process of the molecule? The fact that DNA molecule is made of two polynucleotide c

Q. Number of risk factors of gout? A number of risk factors are related to the development of hyperuricemia and gout. These factors include: • Hereditary: Genetics may play

Risk Factor Modification :  Even after CABG, patients are at risk of progression of native coronary artery disease and development of lesions in the conduits. Modification of

Q. What is the typical shape of a population growth curve? How can the biotic potential be represented in the same way graphically? A usual population growth curve number of in