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45 Cards in this Set
- Front
- Back
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 |
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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
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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 |
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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+ |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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) |
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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-) |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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) |
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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 |
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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
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1. Sarcoidosis Pathogenesis:
^ CD4/8 ratio; Oligoclonal T cells; Increased cytokines; Genetic - familial & racial clustering Environmental - Tenuous association w/ infectious agents |
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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%;
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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 |
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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 |
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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 |
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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 |
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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, |
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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 |
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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 |
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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 |
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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 |
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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
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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. |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |