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Pathophysiology - Final Exam
Lungs
33
Health Care
Graduate
07/26/2008

Additional Health Care Flashcards

 


 

Cards

Term
What is the difference btwn the right and left bronchi and what is the clinical importance of this?
Definition
The right brochus is more vertical which increases the risk for aspiration.
Term
Acinus
Definition
respiratory bronchiole, alveolar duct and alveolus
Term
Where do you need to listen to hear left upper lobe sounds?
Definition
the front of the chest bc the lower lobe goes almost all the way up on the back side
Term
agenesis
Definition
failure of lungs to develop
Term
fistula
Definition
a communication between two hollow organs
Term
pulmonary hypoplasia
Definition
reduced lung weight, volume and acini for weight and gestational age

found in 10% of neonatal autopsies
Term
what causes pulmonary hypoplasia?
Definition
space-occupying lesions of the uterus

oligohydramnios

impaired fetal respiratory movements assc with a diaphragmatic hernia, premature prolonged rupture of fetal membrane
Term
foregut cysts
Definition
abnormal detachment of primative foregut during embryogenesis
Term
where are foregut cysts normally located?
Definition
in the hilar or mid-mediastinal regions
Term
smooth muscle and connective tissue foregut cysts are filled with ...
Definition
ciliated pseudostratified columnar epithelium w/ squamous metaplasia in areas of inflammation
Term
How does a foregut cyst present?
Definition
with symptoms of mass effect or secondary infection
Term
atalectasis
Definition
incomplete expansion of lungs or the collapse of a previously inflated lung
Term
resorption/obstruction atalectasis
Definition
complete obstruction results in resorption of oxygen without affecting blood flow

lung volume decreases and trachea deviates towards the affected lung (bc the other lung expands to fill the empty space)
Term
compression atalectasis
Definition
the pleural cavity becomes filled with a tumor, air or fluid

the trachea deviates away from the affected lung
Term
contraction atalectasis
Definition
fibrotic changes of the lung or pleura prevent full expansion of the lung (contract lung to a smaller volume)

slow process, "extra" space will fill with fluid

no tracheal deviation
Term
pulmonary edema
Definition
refers to collection of exudate in the alveolar spaces caused by hemodynamic causes (like heart failure) or direct increase in pulmonary capillary pressure
Term
hemodynamic pulmonary edema
Definition

caused by increased hydrostatic pressure

-- left heart failure increases pulmonary vein pressure, transferred to pulmonary capillary beds edema is dependent, settles with gravity

Term
pulmonary edema due to injury
Definition
results in leakage of fluids into the alveolar spaces acute respiratory distress syndrome causes it because of microvascular injury
Term
ARDS: clinical features
Definition
high mortality, person is very sick, takes a long time to resolve, fluid accumulation in both lungs
Term
interstitial edema
Definition
accumulation within the tissue of lung not the alveolar spaces
Term
restrictive pulmonary disease is characterized by:
Definition
reduced expansion of lung parenchyma with decreased total lung capacity expiratory flow rate is normal or reduced proportionally to the lung capacity
Term
Chronic Obstructive Pulmonary Disease is also known as...
Definition
Emphysema and Bronchitis primary cause: smoking also pollutants and related exposures
Term
Asthma is also known as...
Definition
reversible airway hyperreactivity
Term
COPD
Definition

a cell-mediated inflammatory disease of the airways

 

long-term inflammation causes fibrous tissue, and there is also digestion and remodeling of tissue

Term
emphysema
Definition

char by abnormal permanent enlargement of the airspaces (bc of destruction of the alveolar walls) distal to the terminal bronchioles (compensatory hyperinflation) destruction of alveolar walls with or without fibrosis air may become trapped

 

reduces SA and thus gas exchage surface

Term
bullae
Definition
large subpleural blebs (like air filled blisters) caused by emphysema, long term and uncontrolled proteases usually form near apex rupture results in pneumothorax
Term
chronic bronchitis defined clinically
Definition
persistent cough with sputum production for at least 3 months in at least 2 consecutive years (w/o other cause) may progess to COPD, lead to cor pulmonale and heart failure may cause atypical metaplasia and dysplasia (precancerous changes)
Term
Chronic bronchitis
Definition

hypersecretion of mucus into bronchi and trachea, mucous gland hypertrophy mucous results in airway obstruction with continued stimulus mucous gland hypertrophy with hypersecretion into small airways increases risk for pulmonary infections

 

part of the inflammation process is mucous prodcution

Term
what lung problem presents with hypersecretion of mucous due to an enlarged gland
Definition
chronic bronchitis
Term
interstitial emphysema
Definition

occurs when air enters the pleural cavity from the lung or environment (forceful pneumothorax), being forced into stromal tissue cough with obstruction, trauma

 

air is pushed into other tissue (like muscles)

Term
bronchiectasis
Definition

char by permanent dilation of bronchi and bronchioles caused by destruction of muscle and elastic tissue (especially near the terminal bronchioles) result from obstruction and repeated infection as opposed to pollutants

 

chronic; rarely fully resolved

Term
bronchiectasis manifestations
Definition

cough, fever, expectoration of copious, foul smelling, purulent sputum

often infected

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