NR 507: Advanced Pathophysiology
Midterm
Asthma - Answer-Chronic disease due to bronchoconstriction and an excessive inflammatory response
in the bronchioles
What are 5 s/s of asthma - Answer-coughing
wheezing
shortness of breath
rapid breathing
chest tightness
Pathophysiology of asthma (5) - Answer--airway inflammation, bronchial hyper-reactivity and smooth
muscle spasm
-excess mucus production and accumulation
-hypertrophy of bronchial smooth muscle
-airflow obstruction
-decreased alveolar ventilation
Bronchioles - Answer-smaller passageways that originate from the bronchi that become the alveoli
,3 layers of the bronchioles - Answer-innermost layer
middle layer - lamina propria
outermost layer
lamina propria - Answer-the middle layer of the bronchioles
structure of the lamina propria - Answer-embedded with connective tissue cells and immune cells
purpose of the lamina propria - Answer-white blood cells are present to help protect the airways
How does the lamina propria effect the lungs in regards to asthma - Answer-the WBCs protective
feature goes into overdrive causing an inflammatory response that damages host tissue
What does the innermost layer of the bronchioles contain - Answer-columnar epithelial ells and mucus
producing goblet cells
What does the outermost layer of the bronchioles contain - Answer-smooth muscle cells
what does the outermost layer of the bronchioles do - Answer-control the airways ability to constrict
and dilate
alveolar hyperinflation - Answer-When air is unable to move out of the alveolar like it should due to
bronchial walls collapsing around possible mucus plug thus trapping air inside
how does hyperinflation occur? - Answer-the ongoing inflammatory process of asthma produces mucus
and pus plug that the bronchial walls collapse around
, Effect of hyperinflation of the alveolar - Answer--expanded thorax and hypercapnia (retention of CO2)
- respiratory acidosis
What are two anticholinergic drugs used for asthma - Answer-tiotropium and ipratropium
What do anticholinergics do in the lungs? - Answer-These drugs block the effects of the
parasympathetic nervous system
- increasing bronchodilation
MOA of anticholinergic drugs for asthma - Answer-the parasympathetic system is stimulated by the
vagal nerve to release acetylcholine which binds to the cholinergic receptors of the respiratory tract to
cause bronchial constriction = decreased airflow
- blocking the cholinergic receptors prevents acetylcholine binding preventing the bronchial constriction
bronchitis - Answer-inflammation of the bronchial tubes
3 characteristics of bronchitis - Answer-bronchial inflammation
hypersecretion of mucus
chronic productive cough for at least 3 consecutive months for at least 2 successive years
Perfusion - Answer-The supply of oxygen to and removal of wastes from the cells and tissues of the
body as a result of the flow of blood through the capillaries.
results of chronic bronchitis/ low perfusion - Answer-cyanosis
right to left shunting
Midterm
Asthma - Answer-Chronic disease due to bronchoconstriction and an excessive inflammatory response
in the bronchioles
What are 5 s/s of asthma - Answer-coughing
wheezing
shortness of breath
rapid breathing
chest tightness
Pathophysiology of asthma (5) - Answer--airway inflammation, bronchial hyper-reactivity and smooth
muscle spasm
-excess mucus production and accumulation
-hypertrophy of bronchial smooth muscle
-airflow obstruction
-decreased alveolar ventilation
Bronchioles - Answer-smaller passageways that originate from the bronchi that become the alveoli
,3 layers of the bronchioles - Answer-innermost layer
middle layer - lamina propria
outermost layer
lamina propria - Answer-the middle layer of the bronchioles
structure of the lamina propria - Answer-embedded with connective tissue cells and immune cells
purpose of the lamina propria - Answer-white blood cells are present to help protect the airways
How does the lamina propria effect the lungs in regards to asthma - Answer-the WBCs protective
feature goes into overdrive causing an inflammatory response that damages host tissue
What does the innermost layer of the bronchioles contain - Answer-columnar epithelial ells and mucus
producing goblet cells
What does the outermost layer of the bronchioles contain - Answer-smooth muscle cells
what does the outermost layer of the bronchioles do - Answer-control the airways ability to constrict
and dilate
alveolar hyperinflation - Answer-When air is unable to move out of the alveolar like it should due to
bronchial walls collapsing around possible mucus plug thus trapping air inside
how does hyperinflation occur? - Answer-the ongoing inflammatory process of asthma produces mucus
and pus plug that the bronchial walls collapse around
, Effect of hyperinflation of the alveolar - Answer--expanded thorax and hypercapnia (retention of CO2)
- respiratory acidosis
What are two anticholinergic drugs used for asthma - Answer-tiotropium and ipratropium
What do anticholinergics do in the lungs? - Answer-These drugs block the effects of the
parasympathetic nervous system
- increasing bronchodilation
MOA of anticholinergic drugs for asthma - Answer-the parasympathetic system is stimulated by the
vagal nerve to release acetylcholine which binds to the cholinergic receptors of the respiratory tract to
cause bronchial constriction = decreased airflow
- blocking the cholinergic receptors prevents acetylcholine binding preventing the bronchial constriction
bronchitis - Answer-inflammation of the bronchial tubes
3 characteristics of bronchitis - Answer-bronchial inflammation
hypersecretion of mucus
chronic productive cough for at least 3 consecutive months for at least 2 successive years
Perfusion - Answer-The supply of oxygen to and removal of wastes from the cells and tissues of the
body as a result of the flow of blood through the capillaries.
results of chronic bronchitis/ low perfusion - Answer-cyanosis
right to left shunting
