Pulmonary Flashcards
what is atopy
wheezing, eczema, and seasonal rhinitis
what is the pathophysiology of ASTHMA
it is an overproduction of IGE which results in there beta 2 receptors.
This leads to inflammation and mucus production and bronchial smooth muscle contraction
Clinical features of asthma
FEV1/FVC
what is bronchitis
infection and inflammation of the bronchial tree
there is also mucous formation
what is the most common cause of bronchitis
80% viral
who is at risk of acute bronchitis
smokers, COPD, DM and immunocompromised
what test should you order for acute bronchitis and why
cxr to rule out pneumonia
how do you treat acute bronchitis
albuterol and an antitussive and hydration
what is the most common infection with cystic fibrosis
pseudomonas
what is the etiology of COPD
smoking
it can also be due to alpha 1 antitrypsin
what pattern is seen on PFT in a patient with COPD
FEV1
what is the pattern for PFT in a patient with restrictive pattern
FEV1 is normal or slight decreased
FVC decreased more than FEV1
FEV1/FVC ratio is increased
TLC is decreased
people with emphysema are know as
pink puffers
they are thin due to increased energy expenditure during breathing
patient tend to lean forward
Patients have a barrel chest increased AP diameter
accessory muscle use
people with chronic bronchitis are know as
blue bloaters
they are over weight and cyanotic due to hypercapnia and hypoxemia
chronic cough and sputum production
what is bronchiectasis
irreversible dilation of the airways due to inflammatory destruction of the airway walls
Secondary infection with Pseudomonas aeruginosa
etiology of bronchiectasis
Cystic fibrosis most common Mechanical obstruction, tumor, mucus Infectious, TB, Pneumonia, MAC hypogammaglobulinemia Chronic aspiration
signs and symptoms of bronchiectasis
chronic cough mucopurulent sputum (foul smelling)
hemoptysis due to rupture of blood vessels near bronchial walls
wheezing
digital clubbing
recurrent or persistent pneumonia
how is bronchiectasis diagnosed?
High rest CT
PFT shows obstructive pattern
CXR is normal in most cases
what is the treatment for bronchiectasis?
Abx for acute exacerbations Bronchial hygiene hydration chest PT Bronchodilators
what is Cystic Fibrosis
defect in chloride channel protein causes impaired chloride and water transport which leads to thick viscous secretions in the respiratory tract, exocrine pancreas, sweat glands, intestines and GU
who is affected by CF
autosomal recessive condition predominantly affecting caucasians
what happens with patients who have CF
typically get obstructive lung disease with chronic pulmonart infections (pseudomnonas), pancreatic insufficiency and other GI problems
what is the treatment for CF
pancreatic enzyme replacement, fat soluble vitamins, chest PT, vaccinations for influenza and pneumococcal and ABX for infections
what is emphysema
permanent enlargement of air spaces distal to terminal terminal bronchioles due to destruction of alveolar walls from protease.
Elastase is released from PMN and macrophages and digest human lung. This is inhibited by alpha1-antitrypsin
what is the pathogenesis of chronic bronchitis
excess mucus production narrows the airways; patients often have a productive cough
Inflammation and scarring of the airways, enlargement in mucous glands and smooth muscle hyperplasia lead to obstruction
signs of COPD
prolonged forced expiratory time during auscultation, end expiratory wheezes on forced expiration, decreased breath sounds and inspiratory crackles Tachypnea, Tachycardia Cyanosis, accessory muscle use hyperresonance on percussion signs of cor pulmonale
How is COPD diagnosed
with PFT i s definitive diagnostic test
Decreased FEV1 and Decreased FEV1/FVC ratio
Increased total lung capacity and functional reserve capacity (indicates air trapping)
Obstructive lung disease FEV1, FEV1/FVC PEFR, Residual volume TLC Vital lung capacity
FEV1-low FEV1/FVC-low PEFR-Low Resid Vol-High TLC-High Vital cap-low
Restrictive lung disease FEV1, FEV1/FVC PEFR, Residual volume TLC Vital lung capacity
FEV1-normal to slightly low FEV1/FVC-normal to high PEFR-Normal Resid Vol-low,norm,high TLC-low Vital cap-low
CXR in COPD
low sensitivity fir diagnosing COPD
Hyperinflation, flattened diaphragm and enlarged retrosternal space
decreased vascular markings
Useful in acute exacerbation to rule out pneumonia
what is the most important intervention for COPD
smoking cessation
it prolongs survival rate but does not reduce it to the level of someone who has never smoked.
what two interventions for COPDers has lowered mortality
smoking cessation and oxygen therapy
what is the treatment of COPD
-Inhaled Beta2-agonists (albuterol) long active agents like salmeterol Inhaled -anticholinergics like ipatropium bromide -combo of albuterol and ipatropium -Inhaled steroids like fluticasone or budesonide -Theophylline -O2 therapy -vaccination influenza and pneumococcal
what is contraindicated in COPD and asthma as far as medication goes?
beta blockers because they can mask brochospam
what is the criteria for continuous or intermittent long term oxygen therapy in COPD
PaO2 55mm HG
or
O2 sat
acute COPD excerbation definition
a persistent increase in dyspnea not relieved with bronchodilators
Increased sputum production are common
what is first line treatment in acute COPD excerbation
Broncodilator alone or in combo with anticholinergic
supplemental O2 to keep
When do you use systemic steroid in a COPD exacerbation
for patient requiring hospitalization usually methylprednisolone
DO Not use inhaled steroid with acute exacerbation
asthma triad
- air way inflammation
- Airway hyperresponsiveness
- reversible airflow obstruction
when does asthma start?
can start at any age
extrinsic asthma
patients are atopic produce immunoglobulin E to environmental antigens
May be associated with eczema and hay fever
intrinsic asthma
not related to atopy or environmental factors
triggers include pollen, house dust, mold and cockroaches, cats, dogs, cold air, tobacco smoke
clinical features of asthma
intermittent SOB, wheezing, chest tightness, and cough
Symptoms are worse at night
Wheezing during inspiration and expiration
how is asthma diagnosed
PFT
they will show a obstructive patter
Decrease in FEV1, and FEV1/FVC
Spirometry before and after bronchodilator can confirm diagnosis by proving reversible air way obstruction
If there is an increase in FEV1 or FVC by at least 12% it is considered reversible
Peak Expiratory flow rate Normal mild mod-sev severe
norm:450-650
mild>300
mod-sev:100-300
sev
what is bronchoprovocation test
used when asthma is suspected but PFT are nondiagnostic.
measures lung function before and after inhalation of mathacholine
what is the most common finding of asthma on CXR
normal
can show hyperinflation
ABGs in asthma
should be considered if patient is in significant respiratory distress
Hypercarbia is common
what id the PaCO2 is normal or increased
respiratory failure may ensue.
When respiratory rate is increased that should cause PaCO2 to decrease but Increased PaCO2 is a sign of respiratory muscle fatigue or severe air way obstruction.
Pt should be hospitalized and mechanical vent should be considered
what is the treatment for acute attacks
albuterol inhaler onset is 2 to 5 minutes and last 4to6 hours
what is the treatment of acute severe asthma excarbation?
Inhaled beta2 agonist via MDI or neb assess patients response to bronchodilators with peak expiratory flow and clinically Corticosteroids third line agenst include iv magnesium supplemental O2 to keep sats >90%
intermittent asthma symptoms and night time symptoms
rescue med usage
interfere with normal activity
symptoms
severe persistent asthma sypmtoms night symptoms rescue med use interfer activity lung function
symptoms throughout the day night 7times/week rescue med use several time/day activity inter extereme FEV1
Mild persistent asthma symptoms night symptoms rescue med use activity interfe lung function
symptoms >2days/week night symptoms 3-4 times/month rescue med use > 2 days/week but not daily activity interference minor
what are typical cardiopulmonary pattern in restrictive lung disease
RVH
RAD
right heart strain pattern
what is the key to pnemoconosis?
exposure
what are the types of pneumoconiosis related to environmental exposure
Asbestosis (ships, insulation, pleural plaquing)
Silicosis (sandblasting, foundry work
Black lung coal miners lung
Interstitial lung disease with granulomas
Sarcoidosis
Histocytosis
Wegners’s granulomatosis
churg-strauss
alveolar filling disease
good pasture
Idopathic hemosiderosis
alveolar proteinosis
what is sarcoidosis?
non infectious granulomatous disease
90% lung involvement
they are noncaseating granulomas
who does sarcoidosis usually affect?
young to middle age
what is the work up for sarcoidosis and what do the results look like
Leukopenia, eosinophilia Hypercalcemia/hypercalciureia Increased ESR/CRP \+RF Increased serum ACE
what does a CXR look like for sarcoidosis
nodular lesions with bilateralhilar lymphadenopathy
how is sarcoidosis dxed
transbronchial biopsy
what is the treatment for sarcoidosis
steroids only for symptoms
most cases resolve or significantly improve in 2 years
what is erythema nodosum
is a reddish painful tender lumps commonly located on the front of legs below the knees
found in sarcoidosis
what are symptoms of sarcoidosis
anterior and posterior uveitis erythema nodosum conjunctivitis heart arrhythmias bells palsy
what do PFT look like for sarcoidosis
decreased VC and TLC decreased diffuse lung capacity
decreased FEV1/FVC
what is asbestosis?
diffuse interstitial fibrosis of the lung caused by inhalation of asbestos fibers
when does asbestos develop
15 to 20 years after exposure
what does asbestos look like on a CXR
honey combing with pleaural plaques
hazy infiltrates with bilateral linear opacities
what causes silicosis
exposure to sandblasting, mining, stone cutting and glass manufacturing
What are people who have silicosis at risk of getting
TB
What does silicosis look like on CXR
egg shell calcifications
localized and nodular peribronchial fibrosis most common in upper lobes
what is the treatment for silicosis
removal from exposure
what causes berylliosis?
exposure to beryllium from fluorescent lightbulbs and aerospace engineering
how is berylliosis diagnosed
beryllium lymphocyte proliferation test
how is berylliosis treated
steroids
what causes idiopathic pulmonary fibrosis
its unknown
what is the presentation of IPF
gradual onset of progressive dyspnea, nonproductive cough
what is the mean survival of ITP
3-7 years
what does the CXR look like with IPF
ground glass or honeycomb or normal
how is IPF diagnosed
open lung biopsy
what is the treatment of IPF
no effective treatment but supplemental oxygen, steroids and lung transplant have shown to be beneficial