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47 Cards in this Set
- Front
- Back
What is pathology of centrilobular emphysema? Who gets it? where in lungs?
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i)destroys RB (prox acini) w/little change in distal acini. ii)smokers iii)upper lobe
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what is path of panlobular emphysema? Who gets it? Where in lungs?
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i)prox and distal acini ii)a1AT def iii)lung bases
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What is defn of chronic bronchitis? Of emphysema?
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i)CB: clinical dx; chronic cough w/sputum for 3 mo/year for 2 years. ii)pathologic dx; permanent enlargement distal to TB due to destruction of alveolar walls
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what is a risk factor for COPD besides smoking, A1AT, and environment
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asthma
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What is pathogenesis of CB?
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i)excess mucus production narrowing airways; inflamm and scarred airways, enlarged mucus glands, smooth m hyperplasia
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What is pathogenesis of emphysema? How does smoking affect it?
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i)alveolar walls destroyed b/c excess elastase or relative def a1AT and PMNs and macros release elastase (inhibited by a1AT). ii)smoke: incr PMNs and macros; inhibits a1AT
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What is definitive test for COPD? What are 2 other tests? What is CXR good for?
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i)PFT: obstruction=decr FEV1 and decr FEV1/FVC (FEV1: 50% is severe). Get incr TLC, RV, FRC b/c air trapped. Decr VC ii)CXR and a1AT genetics. iii)r/o pneumonia/pneumothorax. If severe, get hyperinflation, flattened diaphragm, enlarged retrosternal space.
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what are signs of COPD? x3
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i)decr FEV ii)auscult: end exp wheezes on forced expiration; decr breath sounds; insp crackles. iii)hyperressonance on percussion
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What is most imp intervention in COPD? What are drugs that can be used? x3
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i)smoking cessation ii)B2 agonist; anticholinergic (ipratropium): slower onset but last longer; steroids (decr inflamm)
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What do you give for acute exacerbation in COPD?
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1st: B agon/anticholin->systemic steroids and ABX. Give O2 to keep O2>90%. Use Noninvasive PPV to help in acute exacerbations. Intubate and mech ventilate if these don't stabilizeDon't give B block in acute COPD or asthma exacerbations.
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What are secondary treatment options besides drugs for COPD? x3
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i)O2 therapy: improves survival and quality of life in COPD and hypoxemia. It will decr pulm HTN and cor pulmonale b/c hypoxemia leads to that; need ABG to determine need for O2. ii)vaccinate against Strep pneum iii)SX: resect or xplant
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What are criteria for cntinuous or intermittent long term O2 therapy in COPD? x2
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i)PaO2 55 mmHg or O2 sat<88%. ii)OR, PaO2 55-59+polycythemia or cor pulm
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What is the order of operations for treating COPD?
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i)mild to mod: MDI (metered dose inhaler) of anticholin and/or B agonists and steroids. ii)severe: add continuous O2 TX (if hypoxemic) and pulm rehab.
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What are complications of COPD? x3
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i)acute exacerbation: most common cause is infection, cardiac dz. ii)secondary polycythemia: response to chronic hypoxemia. iii)pulm HTN and cor pulm
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What is the triad for asthma?
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i)airway inflamm ii)airway hyperresponsiveness iii)reversible airflow obstruction
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What is diff b/w extrinsic and intrinsic asthma?
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i)extrinsic: atopic patients IgE to environmental Ags; ass'n w/eczema and hay fever. ii)intrinsic: not atopic or environmental triggers
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What are clinical features of asthma? x4. When do they occur? When are they worst
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i)wheezing ii)cough iii)chest tightness iv)SOB. v)Occurs w/in 30 in of exposure vi)worst at night
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What is DDX of wheezing besides asthma? x4
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i)CHF: edema of airways and congestion of bronchial mucosa. ii)COPD: inflamed airways may be narrowed or bronchospasm iii)cardiomyopathies, pericardial dz: edema around bronchi iv)lung cancer: obstructed airway
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What drugs can be used for asthma? x4
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i)B agonist ii)steroids iii)montelukast-leukotriene iv)cromolyn
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What is long term B agonist good for? x2 What does corticosteroids have an effect on? x2 What side effect do inhaled steroids cause? x3
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i)night time sxs; exercise induced asthma ii)decrease hyperresponsiveness; decr number of exacerbations iii)oral thrush; sore throat; hoarseness
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What is tx for acute severe asthma exacerbation x4
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i)B agonist ii)steroids iii)O2 iv)Abx if infection suspected...intubate if resp failure
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What are complications of asthma? x3
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i)status asthmaticus: no response to std meds ii)acute resp failure iii)pneumothorax, atelectasis, pneumomediastinum
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What is triad of ASA sensitive asthma? What should you avoid?
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i)nasal polyps, ASA, asthma. ii)NSAIDs b/c can get systemic rxn
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What is precipitant of bronchiectasis? x2 What happens?x2
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i)infection in patient w/airway obstruction; b) impaired defense or drainage. ii)a)permanent, abnl dilation and destruction of bronchial walls b)cilia are damaged
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What are causes of bronchiectasis?x4
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i)CF ii)infection iii)humoral immunodef (abnl lung defense) iv)airway obstruction
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What is longterm tx of mod asthma? severe?
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i)mod: daily inhaled steroid OR cromolyn, methylxanthine, or antileukotriene. ii)high dose steroid OR long acting B agonist OR methylxanthine and PO steroid
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What are clinical features of bronchiectasis? x4
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i)chronic cough w/lots of mucopurulent smelly sputum. ii)dyspnea iii)hemoptysis: rupture BV near bronchial wall iv)recurrent pneumonia
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How to DX bronchiectasis? x3
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i)PFTs: obstructive ii)CT scan is study of choice iii)CXR nonsp but abnl. iv)bronchoscopy sometimes
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What is TX of bronchiectasis x4
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i)Abx for acute exacerbations: signalled by changed sputum, fever, CP ii)bronchial hygiene: a)hydration b)drainage of mucus c)bronchodilators
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What is main goal of TX of bronchiectasis? x2
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i)prevent hemoptysis ii)prevent pneumonia
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What is clinical features of CF? x3
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i)obstructive lung dz pattern ii)pancreatitis iii)recurrent lung infection (pseudomonas)
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How to treat CF? x4
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i)annual flu vaccine ii)Abx for lung infection iii)iatro pancreatic enzymes iv)fat soluble vit supplements
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What are 2 kinds of lung cancers? Which is more common? Why imp to differentiate?
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i)Small cell: 25% ii)NSCLC: 75% (ADC, large cell, sq cell, bronchoalveolar). iii)treatment is diff
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Which cancer has lowest ass'n w/smoking? What are 2 risk factors?
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i)ADC ii)a)radon b)COPD (independent of smoking)
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How are the 2 kinds of CA staged?
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i)NSCLC: TNM ii)SCLC: a)ltd: chest + supraclav nodes (no cervical or axillary). b)extensive: outside of ltd
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What are local clinical features of lung cancer and which one shows these the most? x5
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i)hemoptysis ii)obstruction iii)wheezing iv)cough v)dyspnea
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What are Sxs of local invasion in lung cancer? x6
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i)phrenic nerve palsy ii)hoarseness (Recurrent laryngeal) iii)Pancoast iv)Horner's v)malig effusion vi)SVC syndrome
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What does SVC syndrome present as? x4
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i)facial fullness; ii)facial and arm edema; dilated veins over ant chest, face, arms; JVD
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What local invasive/paraneoplastic sxs is SCLC ass'd w/? x4 Sq CC? x4
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i)Eaton Lambert; SVC; SIADH; ACTH secretion ii)SqCC: Pancoast; PTH pr; long bone pain
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What nerves does Pancoast affect? What are the sxs? x3
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i)C8 and T1-2. ii)a)pain in arm b)weakness in arm b/c brachial plexus c)Horner's ass'n
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What is clinical pic of Eaton Lambert Syndrome x3
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i)paresthesias ii)decr DTR iii)prox muscle weakness/fatigability
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What tests should be performed for lung cancer DX? x3 How are each imp?
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i)CXR: most imp radio study for DX: if stable for 2 years, benign. ii)CT scan: for staging (see mets and mediastinal lympadenopathy). iii)Needle BX: SCLC vs NSCLC
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What kind of lesion is bronchoscopy and cyto exam of sputum for?
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i)for central lesions. Bronchoscope can't go past 2ndary br of bronchial tree
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What is the treatment for NSCLC and SCLC?
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i)NSCLC: a)SX*, but if mets outside chest, no SX. b)Rads c)chemo uncertain. ii)SCLC: a)chemo* b)rads: only for ltd dz
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What is most common cause of mediastinal mass? What is most common according to location? x2 for each
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i)metastatic CA (esp lung). ii)a)ant: thyroid, teratogenic tumor b)Middle: lung Ca; lymphoma c)posterior: neurogenic; esophageal mass
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What are clinical features of mediastinal mass? x5
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i)cough (compressed bronchi/trachea) ii)CP iii)dysphagia iv)SVC syndrome v)compression of nerves (hoarse, Horners, hemidiaphragm paralysis via phrenic)
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How to DX mediastinal mass? If benign, what to do?
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i)CT ii)if asympto and benign: observe
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