Is atelectasis a Restrictive or Obstructive disorder? and y?

Question

thanks to every1 who's answered my previous questions

Answer 1

Lung diseases can be evaluated by many different techniques, one of which is PFTs or Pulmonary Function Tests that evaluate Airflow (movement of air into and out of the lungs), Lung volumes (by plethysmography), and diffusion capacity (a complicated subject but basically evaluation of the ease with which gas moves from the alveoli onto hemoglobin.

there are two ways to breakdown PFTs-- restrictive and obstructive.

obstructive lung diseases are present if there is a reduction in both the FEV1 (amount of gas forefully exhaled in 1 sec) and the FEV1/FVC ratio (FVC = forced vital capacity) whereas restrictive lung diseases are defined as a decreased TLC (total lung capacity).

don't worry i am getting to the answer.

a differential diagnosis of obstructive lung diseases would include:
1. Chronic Obstructive Pulmonary Disease (COPD)
a. Chronic Bronchitis
b. Emphysema - smoking, alpha-1 antitryspin
2. Asthma
3. Bronchiolitis Obliterans
4. Airway Obstruction

a differential diagnosis for restrictive lung diseases can be remembered by the mnemonic PAINT
1. Pleural Dz - like a pleural effusion
2. Alveolar Dz - pulmonary alveolar proteinosis, pneumonia
3. Interstitial Dz - interstitial lung dz, idiopathic pulmonary fibrosis
4. Neuromuscular Dz - Guillan-Barre dz, ALS
5. Thoracic Cage Dz - kyphoscoliosis, ankylosing spondylitis

all of this being said, the underlying cause of the atelectasis would effect how you would classify it as obstructive of restrictive, though a majority of the time it will be restrictive. if the cause of the alveolar/lobar collapse were pneumonia then this would lead to a restrictive dz as above. another answer spoke of airway obstruction which is associated with obstructive defects from air trapping behind the obstruction or hyperinflation of the non obstructed areas. but in the end this would also lead to a restrictive defect because of the loss of lung volume by PFTs in the volume that becomes atelectatic. hope this helps; and keep your questions coming.

Answer 2

Restrictive. Atelectasis most commonly occurs after surgery or after a traumatic event. It is caused from the ventilator'l Tidal Volume not being set hight enough to get the patient to take those big deep braths (and the veltilator will help give that patient the volumes of air needed for him or hair to get the bases of the lungs open in order to open the alveoli. It can also be helped by the patient usuing a hard pillow for a splint to splint his incision, taking a big dream beath and holding it for a few seconds and then coughing as best he can.

Obstructive disease is like COPD or Chronic Obstructive Pulmonary Disease (seen in smokers) and sever asthmatics. The obstructes airwais are generally obstructed from edema in the respiratory tract of from mucous plugs.,

Answer 3

Atelectasis is also referred to as an absorption collapse of part or whole of the lung. It is caused by eg. a plug of mucus in the bronchiole or bronchus causing obstruction of the air passage leading to the respective alveoli. The trapped air in the alveoli then gets absorbed leaving the airless segment of the lung to collapse.

In this way atelectasis is caused by an obstructive disorder of the respiratory tree.

Answer 4

Bronchial asthma is viewed an obstructive airway ailment. Obstructive is considered some thing going on within the airway which restricts airflow, equivalent to bronchospasm from asthma attack, a tumor within the airways that obstructs the air glide, emphysema. Restrictive is something on the external of the airways inflicting restrictive go with the flow corresponding to scoliosis, chest wall deformities, tumors on the outside of the lungs.

Answer 5

It is a collapse of lung tissue due to obstruction or compression with loss of alveolar air.

Answer 6

Restrictive, oops my bad. Obstructive.
http://www.nlm.nih.gov/medlineplus/ency/article/000065.htm

Answer 7

Well i gotta say........ AIN'T GOTTA CLUE AND DO YOUR OWN BLEEDING HOME WORK!