Pulmonary Flashcards
Small Cell Paraneoplastic syndromes
SIADH and ACTH
Squamous Cell Paraneoplastic syndromes
PTH-like hormone secretion. Eaton-Lambert syndrome.
NSCLC treatment
Surgery is the best option
SCLC treatment
No surgery. Chemo and radiation
Central lung tumors
Squamous cell and SCLC
Peripheral lung tumors
Adenocarcinoma and Large cell carcinoma
Tumor least association with smoking
Adenocarcinoma
Exudate vs. Transudate
Exudate if any one is positive: 1. Protein (pleura)/Protein (serum) >0.5 2. LDH (p)/LDH(s) >0.6 3. LDH>2/3 the upper limit of normal serum LDH
Serum total protein concentration
Upper limit of normal is 7 g/dL
High adenosine deaminase is seen in
TB pleural and ascites fluid
How to treat hypersensitivity pneumonitis
Avoid the antigen exposure
Chemotherapy and radiation for Hodgkin’s complications
Secondary malignancy within 20 yrs
ARDS is
A form of Non-cardiogenic pulmonary edema caused by leaky alveolar capillaries.
Theophylline toxicity
CNS stimulation (HA, insomnia), N/V, Cardiac toxicity (arrhythmia)
What affects theophylline metabolism
Ciprofloxacin and erythromycin decreases clearance and raises plasma concentration
How does theophylline cause toxicity
Phosphodiesterase inhibition, adenosine antagonism, and stimulation of epinephrine release.
Beta-agonists side effects
Arryhthmia, nervousness, tremor, but no CNS and GI effects
parapneumonic effusions pH
<7.2 need chest tube aspiration to prevent empyema
Normal pleural fluid pH
7.64, lower pH means pleural inflammation
Transudative pleural effusion pH
7.35
Parapneumonic effusions glucose
<60 mg/dL favors parapneumonic effusion, TB, or RA
High amylase in pleural fluid?
Pancreatitis associated effusion and esophageal rupture
Aspergilloma CXR
Cavitary lesions and fungus ball which can move around with position change
When to use O2 in COPD patients
PaO2<88%, or with looser guidelines if there is cor pulmonale
Wegener’s serum test
Antineurophilic cytoplasmic antibody (c-ANCA) positive in >90% of patients
Serum alpha fetoprotein use in
Hepatocellular carcinoma and testicular cancer
ESR used in
Temporal arteritis/polymyalgia rheumatica/Wegener’s
Wegener’s diagnosis
c-ANCA positivity and tissue biopsy
Wegener’s treatment
High-dose steroids and cytotoxic agents
Inpatient treatment of CAP
levofloxacin or gatifloxacin (antipneumococcal)
Outpatient tx of CAP
azithromycin or doxycycline
PCP diagnosis
Bronchoalveolar lavage!!!
uses of bronchoalveolar lavage
Suspected malignancy and opportunistic infection
What is the A-a gradient
….
A-a gradient in PE
Increased
Most common EKG finding with PE
Normal, or non-specific ST segment elevations and T wave changes
PE EKG findings
S1,Q3T3. Right axis deviation, RBBB
Hampton’s hump
Cone shaped area of opacification from atelectasis or infarction from PE on CXR
Westermark’s sign
Dilated proximal pulm. artery with distal oligemia
Most common findings on PE ABG
Hypoxemia and hypocarbia
Bronchiectasis signs
Cough (90%) ,mucopurulent and tenacious sputum that is foul smelling, and hemoptysis.
Most feared complication of bronchiectasis
Life-threatening hemoptysis and lung abscesses
How to diagnose bronchiectasis
High resolution chest CT
Pancoast syndrome
When a superior sulcus tumor of the right lung presses on the brachial plexus
Hypertrophic osteoarthropathy
Clubbing, and sudden onset joint arthropathy in chronic smoker. Often associated with lung cancer, CXR needed to rule out malignancy or other lung pathology.
What happens if you get pneumonia in the same place over and over
Red flag for lung cancer
COPD and functional residual capacity
Increased, and TLC increased as well
Sounds in fluid filled regions
Bronchial breath sounds, louder with more prominent expiratory component
Egophony
Sounds bleating, E sounds like A with nasal or sheep like quality
Pleural effusion
Decreased breath sounds
Vesicular vs. bronchial breath sounds
Vesicular are quiet insp. and exp. Bronchial are louder exp. sounds.
Mucuous plugging sounds
No breath sounds over affected areas because no air is getting there
Emphysema breath sounds
Vesicular, decreased breath sounds
Interstitial lung disease breath sounds
Vesicular with crackles at the end of inspiration
Atypical PNA etiologies
Mycoplasma, Chlamydia, legionella, coxiella, influenza
Mycoplasma presentation
Non-productive cough, more indolent course, erythema multiforme
How to diagnose legionella
Urine test
Skin finding in Mycoplasma PNA
Look for Erythema Multiforme
Most common cause of atypical PNA
Mycoplasma pneumoniae
CXR in atypical PNA
Out of proportion to findings on physical exam
Chronic bronchitis and hemoptysis
Frequent cause of mild hemoptysis in patients with significant smoking hx
Chronic bronchitis presentation
Chronic productive cough for at least 3 months over 2 years with PFTs c/w COPD, prominent bronchovascular marking, mild flattening of the diaphgram, and normal DLCO.
Difference between emphysema and chronic bronchitis
DLCO decreased in emphysema, decreased vascular markings in emphysema
Restrictive lung disease FEV1/FVC
Normal ratio, but both are decreased
Alveolar consolidation on PE
Decreased breath sounds, dullness to percussion, tactile fremitus, egophony, whispered pectoriloquy, and bronchophony
tx for Cor pulmonale
Tx underlying cause + bosentan
Bosentan is
endothelin receptor antagonist that is used to treat PAH
Pulmonary HTN prez
PA pressure >25 mmHG rest or >30 mmHg exercise, exerional dyspnea, fatigue, CP +/- syncope
Dx pulm htn
Loud P2+, CXR, pfts, abg, ekg, echo, catherization
Synchronous intermittent mandatory ventilation
Backup RR< does not have present tidal volume per breath
When is the A-a nl
If you are hypoventilating or not enough PaO2 (like high elevation)
What happens when the A-a is elevated
V/Q mismatch vs. shunting
ARDS CXR
Diffuse b/l pulmonary infiltrates (lung white-out)
ARDS PCWP
low PCWP, NO CHF
ARDS tx
decrease FiO2, increase PEEP
Dx of pleural effusion
Thoracentesis + 4 Cs: chemistry (glucose, protein), cytology, CBC+diff, culture
Effusion with amylase
Esophageal rupture, pancreatitis, malignancy
effusion with milky fluid
chylothorax
effusion with pururlence
empyema
bloody effusion
cancer
lymphocytic fluid effusion
TB
pH<7.2 in effusion
empyema or parapneumonic effusion
glucose <60 in effusion
r/o RA!
MCC of empyema in effusion
Staph aureus
mesothelioma surgery
Extrapleural pneumonectomy (high morbidity/mortality)
Asbestos exposure hotspots
shipyards, rooftops
Most common lung cancer in nonsmokers
Adenocarcinoma
Pancoast tumor tx
xrt for 6 wks to shrink tumor
Lung cancer complications
SPHERE: SVC syndrome, pancoast tumor, endocrine (paraneoplastic), recurrent laryngeal nerve, effusions
Small cell paraneoplastic
ADH, ACTH, anti-VGCC antibodies (Lambert-Eaton myasthenic syndrome)
Squamous cell paraneoplastic
PTH-rP ….
benign coin lesions
calcification = granuloma, bull’s eye shape, popcorn chape = hamartoma, air-crescent or halo sign= aspergilloma, southwest region=coccidio, ohio river valley = histolasmosis) LEAVE ALONE
malignant coin lesions
spiculations or 20+ pack year smoking = primary lung cancer, multiple lesions = metastatic cancer leading to resection indication
Chronic Bronchitis
Chronic cough for 3 months/yr for 2 yrs
Panacinar emphysema caused by
A1AT deficiency, pts <50 y/o
Centriacinar emphysema in upper lungs caused by
Smoking
Emphysema in patient <50 y/o
Dx A1AT levels
COPD exacerbation tx
Bronchodilators + abx + systemic steroids + O2 therapy
bronchiectasis gets what infection
Pseudomonas PNA recurrently
Bronchiectasis high res CT
Signet rings
Bronchiectasis tx
Bronchodilators + abx for acute exacerbations
Causes of bronchiectasis
MCC is cystic fibrosis, kartagener syndrome (dynein mutation)
Atopy
asthma +allergic rhinitis + atopic dermatitis
triad asthma
asthma +aspirin sensitivity + nasal polyps
ABPA (allergic bronchopulmonary aspergillosis)
asthma + pulm. infiltrates + aspergillus allergy
Churg-Strauss syndrome
Asthma + eosinophilia + granulomatous vasculitis
Stages for COPD
Stage 1 FEV1>80% predicted, Stage 2 50-80, stage 3 30-50, Stage 4 <50% with hypoxia
Tx for COPD
Stage 1: SABA, ipratropium Stage 2: LABA, tiotropium, Stage 3: Add inhaled steroids, Stage 4: Add O2 therapy for 18 hrs/day
Lung volumes
VC: the most you can breathe in, FRC: end tidal ..asdfa.sdf.asd.fa.sdf
ILD presentation
dyspnea, nonproductive cough, fatigue
Drug-induced pulmonary prez
classic ILD sx s/p amiodarone, bufulfan, bleomycin, MTX< or nitrofurantoin
Sarcoidosis prez
young black female w/ respiratory complaints, erythema nodosum, and blurry vision (ant. uveitis)
Sarcoid histology
Schaumann and asteroid bodies
Sarcoid tx
steroids
Sarcoid complications
GRAINeD: Inc. IgG, RA, increased ACE, ILD, noncaseating granulomas, increased vitamin D from increased 1alpha-hydroxylase
Histiocytosis X can cause ILD?
Yes
Histiocytosis X dx
Honeycomb lung on CXR, histology eosinophilic granulmas, tx with steroids vs. lung txp
Wegener grenulomatosis (granulomatosis with polyangiitis)
Triad of necrotizing vasculitis, necrotizing granulomas in lungs and upper respiratory tract, and necrotizing glomerulomephritis leading to hematuria and hemoptysis
Wegeners dx
Inc. c-ANCA, tissue bx shows necrotizing granulomas
Wegeners tx
cyclophosphamide
Churg-Strauss syndrome
Triad of asthma, eosinophilia, necrotizing vasculitis with elevated p-ANCA tx with steroids
caplan syndrome
Rheumatoid nodules + pneumoconiosis
Asbestosis
dx CXR shows LOWER lung fibrosis +oleural plaques, tissue bx shows ferruginous bodies, tx supportive care
Most common cancer from asbestosis
Bronchogenic carcinoma»mesothelioma
Silicosis
Fibrosis of UPPER LUNGS, “egg shell” calcifications, mining, stone cutting, glass manufacturing
berylliosis
Sarcoid-like presentation, dx beryllium lymphocyte proliferation test, tx steroids
Goodpasture syndrome
anti-GBM antibodies attack alveolar and glomerular BM leading to hematuria and hemoptysis, tissue bx shows linear staining, get c-ANCA to r/o Wegener tx steroids+cyclophosphamide+plasmapharesis