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45 Cards in this Set

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1. Condition caused by a mucous or mucopurulent plug, a foreign body, intrabroncial clot, tumor, or extrinsic compression
2. Caused by Hydrothorax, hemothorax, pneumothorax, basal atelectasis
1. Resorption Atelectasis
2. Compression atelectasis - extra pleural accumulation of material or loss of pleural space
Microatelectasis ( non obstructive) due to:
General loss of expansion, multifactorial (loss of surfactant, interstitial inflammation, poor expansion)
- seen in RDS & post surgical
Contraction atelectasis - local or generalized fibrosis interfere w/ expansion of lungs and increase elastic recoil during expiration
1. Goal of quick Rx in atelectasis?
2. Atelectasis that is not treatable?
3. The episodic reversible bronchospasm resulting from an exagerated bronchoconstrictor response to stimuli
1. Reverse it, reduce hypoxemia, prevent pneumonia
2. Contraction atelectasis
3. Asthma
Atopic/extrinsic asthma:
1. Type of hypersensitivity
2. CD cell that drives the process
*elevated IgE and eosinophils
1. Type I to extrinsic antigen
2. CD4+ T-helper --- other asthma mb 8+
1. What is the most common type of asthma?
-airway is hyperresponsive, exagerated bronchoconstrictor response
2. Cytokines induced by the asthma induce what?
1. Atopic
2. Synthesis of IgE, Mast cell production, Eosinophil production and activation
In the early asthma phase (30-60 min) describe;
1. Cytokine production
2. IgE action
3. effect of vagal receptors in central and local reflex
1. IL -4 Stimulates IgE produciton
IL- 5 activates local eosinophils, IL-13 stimulates local mucous produciton
2. coats submucosal mast cells, repeat exposure is bad
3. Bronchoconstriction
1. When is the late asthma phase?
2. What types of cells are recruited?
--Chemotactic factors, LT, PAF, TNF
- mast cells are activated
- epithelial damage occurs
1. 4-8 hrs later
2. Leukocytes, basophils, neutrophils, eosinophils
1. Eotaxin is produced by what lung cells?
2. 2 proteins directly toxic to epithelial cells
3. Effect of eosinophil peroxidase?
4. Effect of LT and platelet activating factor?
1. bronchial epithelial cells, macrophages, and smooth m.
2.Major basic protein and eosinophil cationic protein
3. oxidative tissue damage
4. inflammatory response w/o fresh antigen
1. What is a non-immune form of asthma, associated w/ aspirin, pulm. infec., stress, exercise, inhaled stuff
2. IgE levels?
3. What appears to remain a key component of it?
1. Intrinsic asthma - no allergic manifestations
2. normal - just a constitution prone to bronchospasm
3. Eosinophils
IN asthma what happens to:
1. bronchi and bronchioles
2. Eosinophils can produce what histo finding
**increase in submucosal mucous glands, ^ goblet cells; epithelial injury, thick collagen under basement membrane, hypertrophy and hyperplasia of smooth m in large & med airways
1. occluded by mucous plugs
2. Charcot-Leyden crystals
In asthma see:
-dyspnea and wheezing
- air trapping and hyperinflation of lungs
- ^CO2, acidosis, severe hypoxia mb fatal
- Rx w/ bronchodilators and corticosteroids
Emphysema - airspace enlargement w/ fibrosis
Probable most common form 2ndary to healed scarring from previous insult
1. Permanent enlargement of airspace distal to the terminal bronchioles with destruction of alveolar walls
2. What are the 3 types of 1?
1. Emphysema
2. Centriacinar, panacinar, and distal acinar => acinar and lobule are synonymous
Emphesema types:
1. Alveoli after bronchiole – Associated with antitrypsin def. in lower
2. – Associated with spontaneous pneumothorax in young adults with bullae
3. Central acinus with respiratory bronchiole – Associated with smoking and in upper lobe
1. Pan acinar
2. Distal acinar
3. Centriacinar- in the middle of the lobule

Bullae - large cystic space around the pleura
Emphysema pathogenesis:
- competing imbalance of protease-antiprotease activity
- imbalance of oxidant-antioxidant
- associated w/ heavy smoking
Pathogenesis of Chronic Bronchitis
- air pollutants cause irritation and hyper secretion of bronchial mucous glands and hypertrophy of glands
- T cell infiltrate CD8 & lack of eosinophils
1. What is the normal alpha 1 antitrypsin genotype
2. Abnormal?
3. Result of abnormal
4. How can you acquire high protease levels?
1. PiMM
2. PiZZ
3. Drop in antitrypsin levels and get emphysema
4. Smoking - nicotine is a chemotractant of neutrophils through TNF and IL & smoking enhances Macro. elastase (not inhib by antitryp)
1. 2 things that act as 1 antioxidants in the lungs
2. What does smoking do to this?
3. what will eventually happen w/ bronchitis or emphysema?
4. Dif between asthma and chronic bronchitis in T cells and eosinophils
1. Superoxide dismutase & glutathione
2. depletes the natural antioxidants
3. Hypoxia induced vasospasm, loss of capilaries due to alveolar destruction
4. Asthma (CD4, eos +), Bronch (CD8+, eos-)
1. less dyspnea and resp. drive, retain CO2, became hypoxic/cyanotic, develop CHF (cor pulmonale), blue bloaters
2. Dyspnea, normal FVC, minimally reduced FEV1/FVC; enlarged air spaces, low diffusing capacity, hyperventilation, poor oxygen, pink puffer
1. chronic bronchitis - hyperplasia of bronchial glands, loss of ciliated cells w/ squamous metaplasia, goblet cell metaplasia, chronic inflammation
2. Emphysema
1. A persistent cough for at least 3 consec. months in at least 2 consec. yrs
2. What do mucus glands do in large airways?
3. Airflow obstruction is due to?
1. Chronic bronchitis
2. Hyper secretion, increase Reid index
3. inflammation and fibrosis of bronchioles
1. Permanent dilation of bronchi and bronchioles caused by destruction of m. and supporting CT
2. Bronchiecstasis can be due to?
1. Bronchiecstasis - can follow airways almost all way to the pleura
2. Obstruction, Congenital (CF, immunodeficiency or Kartageners syndrome), Necrotizing suppurative pneumonia
1. What presents w/ a stiff lung, interstitial lung disease due to involvement of interstitium, alveolar wall, capillary unit,
2. effect of 1 on FVC and FEV1 and ratio
1. Restrictive lung disease due to conditions:
Occupational/ environmental or Drug/Rx / Immunologic, / idiopathic
2. FVC and FEV1 is decreased, ratio is about normal
1. Presents: Acute onset dyspnea, Low PaO2, bilateral pulmonary infiltrates, absence of clinical evidence of primary lt sided hrt failure
2. What is 1 due to?
Idiopathic of this is acute interstitial pneumonia
1. Acute lung injury / Acute RDS -> type of Restrictive lung disease
2. imbalance of pro and antiinflammatory cytokines -> failure of microvascular endothelium and alveolar epithelium
1. What are the 2 phases of acute RDS?
2. What is formed in 1st phase
3. What occurs in 2nd phase
**May resolve or progress to endstage honey comb lung
1. Exudative (0-7 days) & proliferative (1-3 wks)
2. Hyaline membranes b/c of diffuse alveolar damag.
3. Proliferation of Alv. T2 cells & expansion of alveolar septae w/ fibroplasia
Idiopathic Pulmonary fibrosis AKA Usual interstitial pneumonia AKA cryptogenic fibrosing alveolitis:
1. Age it occurs in?
2. TIme of onset
3. Predisposing injury?
1. >60 yo
2. > 6 mo
3. no known
Pathogenesis of idiopathic pulm. fibrosis
• Some form of persistent alveolar wall injury involving lymphocytes,
macrophages, neutrophils, and alveolar epithelial cells leading to proliferation of fibroblasts and interstitial fibrosis.
***• Temporally heterogeneous process ***
Morphology
• Heterogeneous process histologically
• Fresh fibroplasia(recent injury)
• Old interstitial fibrosis (Remote injury)
• Lymphocytes, plasma cells, and alveolar type 2 cell hyperplasia
• Lead to end stage lung disease(Honeycomb lung disease)
Presents with Insidious,gradual onset,cough, dyspnea • Dry velcro crackles of lung exam
• Progress to cyanosis and cor pulmonale
• CAT scan show lower lobe disease starting a the periphery • Mean survival 2-4 years
Idiopathic pulmonary fibrosis
-nonspecific interstitial lung disease
- respiratory bronchiolitis/interstitial lung disease
- chronic organizing pneumonia
1. A Multisystemic disease of unknown etiology with noncaseating granulomas • **Diagnosis of exclusion after infectious causes ruled out** Occurs in adults younger than 40, increased in Danish, Swedish, US blacks, higher incidence in non smokers
1. Sarcoidosis Pathogenesis:
^ CD4/8 ratio; Oligoclonal T cells; Increased cytokines; Genetic - familial & racial clustering
Environmental - Tenuous association w/ infectious agents
1. Presents w/ noncaseating granuloma rimmed by CD4 + cells, Schaumann bodies (calcifications) & asteroid bodies (proteinaceous precipitates), Hilar and paratracheal nodes involved in 85% of cases; lungs involved 90%;
Sarcoidosis also can effect
skin, eye, salivary gland, spleen, liver, and bone marrow
**Often assymptomatic seen on Xray**, but if seen its for pulm. Sx
1. Hypersensitivity pneumonitis is an immunologically mediated lung disease that targets the alveoli by?
2. What is 1 in response to?
Morpho: patchy mononuclear cell infiltrates w/ occasional small loose granulomas
1. Type III (immune complex) & Type IV (cell mediated rxn) hypersensitivity
2. Inhaled antigens
Clinically: fever, cough, dyspnea 4-8 hrs post exposure, may present w/ chronic disease
Hypersensitivity pneumonitis: Name the agent in
1. Bagassosis
2. Millers lung
3. Pigeon breeders lung
4. Rx for this?
1. Moldy sugar gain w/ thermophilic a.
2. Cont. grain, wheat weevil
3. Pigeons, protein in poop
4. Steroids and removal of the offending Ag
1. What do diffuse alveolar hemorrhage syndromes present as?
2. Histologic features?
1. Triad of hemoptysis, anemia, and diffuse pulmonary infiltrates
2. Intraalveolar hemorrhage and hemosiderin laden macrophages a few days after onset
1. Differential Dx for Diffuse alveolar hemorrhage syndromes
2. What is the most common cause of preventable death in hospitalized pts?, usu from deep v. of the leg, popliteal and above
1. VICAR: Vasculitis (Wageners), Idiopathic pulmonary hemosiderosis, CT disorder (SLE), Anti-basement membrane Ab (goodpasture syndrome), Renal (pulmonary - renal syndrome)
2. Pulmonary thromboembolism,
1. 3 causes of sudden death?
2. A smaller embolie causes a wedge shaped infarct in the lung, what is its progression?
1. PE, MI, Cerebral infarct
2. Hemorrhage -> ischemic necrosis -> scar formation
1. What is caused by a decrease in CSA of pulmonary vasculature?
2. Term for any infection of the lung
3. How can 2 be described by anatomic distriubiton
1. Pulmonary HTN:: 2ndary to cardiac, inflammatory vascular or interstitial lung disease or recurrent thromboembolism; rarely idiopathic/primary
2. Pneumonia
3. Bronchopneumonia or lobar pneumonia
Community Pneumonias; give group bothered by it
1. H. Influenza
2. Moraxella Catarrhalis
3. S. Pneumonia
4. Staphylococcus aureus
1. most common exacerbation of COPD
2. elderly and COPD
3. most common, (90% of lobar), risk ^ in at risk ppl
4. Secondary pneumonia following virus
Give bug for these community pneumonia
1. Most frequent gram -, frequent in alcoholics, malnourished
2. associated w/ CF, invades vessels
3. associated w/ artifical aquatic environments
1. Klebsiella pneumonia
2. Pseudomonas aeruginosa
3. Legionella pneumophila
1. Sequence of events in lobar pneumonia
Bronchonpneumonia - patch inflammation w/ No
Abscess formation - No accumulation w/ necrosis
Empyema - Suppurative material in pleural cavity
1. Vascular Congestion -> Red hepatization, liver like consistency w/ neutrophils -> gray hepatization, dull gray, lysed RBC's, fibrin -> Resoluion, exudate resorbed and forms scar
1. What are 5 community-acquired atypical pneum?
Morpho: widened alveolar septae w/ Mo, no sig. No response
2. Nosocomial pneumonia includes?
1. Legionella, Chlamydia, Coxiella (Q fever) Mycoplasm pneumonia & Viral (most common)
2. PESKS - Pseudomonas sp., E. Coli, Serratia marcesens, Klebsiella sp, Staph A.
Aspiration pneumonia
1. common to whom
2. Combo of what 2 things
3. presentation of it
4. 2 most common bronchi to aspirate stuff to
1. Debilitated or unconscious patients
2. Aspiration of chemical & oral anaerobic bacteria
3. Necrotizing pneum. w/ frequent abscess formation
4. Posterior bronchus RUL, Apical bronchus RLL
1. Most imp risk factor for TB?
Stuff: leading cause of death in poverty, crowdying. Spread person to person
2. hypersensitivity and time to rxn in PPD test
3. Type of staining for it?
1. HIV infection,
2. Type IV T cell response, 48-72 hrs, will not tell if infection or disease
3. Acid fast, walls w/ a high lipid content, resists decolorization
1. granuloma in TB
2. Where do inhaled mycobacterium bacilli go in lung
3. What is a Ghon complex
1. a Caseating granuloma leading to cavitary lesion, Type IV T cell mediated immune response
2. upper part of lower lobe or lower part of upper lobe, near the pleura
3. bronchial lymph node involvement in TB
1. When does progressive pulmonary TB occur? (enlargement, cavitation, erosion of vessels, miliary disease)
2. What is miliary disease (rice looking)
1, immune response is inadequate
2. TB seeds beyond the lungs
Funguses:
1. Mucocutaneous, superficial causes abscess
2. inhaled soil or bird droppings (thick capsule)
3. Associated w/ diabetics, invasive
4. Vascular invasion of immunosuppressed, acute angle branching, septated
1. Candidiasis - budding yeast w/ pseudohyphae
2. Cryptococcus - budding yeast, mucicarmine stains well w/ thick capsule
3. Mucormycosis, right angle branching
4. Aspergillus
1. Small budding yeast, Ohio, central Mississippi river valley, in bat and bird droppings
2. Nonbudding spherules w/ endospores, SW and far west (valley fever)
3. Similar location to 1, broad based budding yeast
1. Histoplasmosis
2. Coccidioidomycosis
3. Blastomyces dermatiditis
1. An owl's eye inclusion is indicative of?
- once infected always have it, immunosuppressed can redevelop it later, common in transplants
2. Morphology of the cells?
1. Cytomegalovirus
2. Strikingly large w/ intranuclear basophilic or owl's eye inclusion
1. PPl at risk of Pneumocystis Jiroveci disease
Morpho: foamy intra-alveolar exudate, minimal inflammation, GMS positive encysted trophozoite
2.Stain to use on it?
1. Immunocompromised
2. Silver stain, see a cup shape