Pulmonary Flashcards
Obstructive dz (dilated)
COPD, Bronchiectasis
Obstructive (constricted)
Asthma
Intrathoracic Restrictive (constricted)
Fibrosis, Sarcoidosis, pneumoconiosis
Extrathoracic Restrictive
Chest Cage, kyphosis, spondyloitis, obesity, neurousc (M.gravis, GB syndorme, muscular dystrophy
Normal FEV1/FVC
> 80%
Obstructive dz FEV1/FVC
<80%
Restrictive dz FEV1/FVC
> 80%
COPD
dec FEV1, dec FEV1/FVC, inc TLC, dec DLCO, inc RV
Asthma
dec FEV1, dec FEV1/FVC, inc TLC, nl/inc DLCO, inc RV
Restrictive intrathoracic
dec FEV1, nl FEV1/FVC, dec TLC, dec DLCO, dec RV
Restrictive extrathoracic
dec FEV 1, nl FEV1/FVC, dec TLC, N DLCO, inc RV
best test restrictive vs obstructive
TLC
asthma
restrictive low FEV1, normal FEV1/FVC, low TLC
DLCO 140% predicted, normal FEV1/FVC and TLC
alveolar hemorrhage
Inc DLCO
CHF, MS, ASD/VSD, PDA, pvera
Dec DLCO
COPD, restrictive lung dz, PE, pHTN, anemia
Normal DLCO
asthma, CO poisoning
Fixed extrathoracic
tumors/trachela stenosis both inspir (bottom) and exp(top) loops blunted
Dynamic extrathoracic obstruction
epiglottitis, Vocal cord dysfxn (insp - bottom loop blunted)
Dynamic intrathoracic obstruction
intrathoracic tracheomalacia - exhal (upper) loop blunted
Asthma
reactive to dust, viral, cold, exc, - must show reversible bronchospasm
Asthma dx
PFT - obstructive changes with reversible broncospasm - responds to brochodilators (inc FEV1 by 15%) - if no obst - methacholinie challenge test (15%)
Young man h/o asthma acute asthmatic attack treated with albuterol nebs - f/u now PFT will show
Obstructive defect (still has asthma dx)
35yo M paroxysmal non-prod cough >6months - no ohther sx - spirometry normal, no improvement with anti-histamine/cough meds
methacholine challenge test r/o asthma
woman in car factory SOB at work, worse at end of day, better at home, cxr normal
check peak flow at home AND home
Best way to tx patient with asthma
remove offending agent (PPI do not inc or dec sx of asthma)
Pt with asthma/eczema moves to new apt, asthma worse - with rug
remove rug, get plastic wraps for mattress, pillow etc
Asthma therapy Intermittent 80
no daily meds, rescue short acting beta
therapy mild persistent (>2/wk, 2/month, FEV1 >80%
low dose inh steroid, cromolyn, leukotriene, theophylline
Mod persistent - daily sx, >5/month at night, FEV1 60-80
low - med dose inh steroid + long acting beta (no beta without inh steroid)
Severe persistent
high dose inh steroid + po steroids with attempts to wean
When leukotrienes
mild persistent to reduce dose inh steroids, asa sens asthma
Vasomotor rhinitis, nasal polyps and asthma dx?
ASA sensitive asthma - d/c asthma, start leukotriene (monteleukast)
Pt with ASA sensitivity asthma can use
codeine based analgesic, sodium or choline slicylates, NO COX1 NSAIDS
Pt with shoulder pain takes ibuprofen - coupel hours later with SOB/wheezing
NSAID induced broncospasm
pt with mod asthma on inhaled steroids+long acting beta+theophylline
add monteluekast (leukotriene) to reduced need for steroids
50yo post viral URI several weeks ago with persistent cough, inc’d at night with chest tightness, no heartburn, rec neg cardiac w/u - PFT with mild obstruction - wtd
methacoline challenge test - post viral hypersensitivity - tx with inhaled steroid (budesonide)
Mainstay maintenance therapy for asthma
inhaled steroids
30yo F non-prod cough for several months, no heart burn tob or wheeze, PFT normal, methacholine neg - wtf
check sputum for eosinophils - (non-asthmatic eosinophillic bronchitis)
Pt with athma on beta agonist still with wheeze
add inhaled steroid
Pt with severe asthma exacerbation hospitalized with iv steroid and beta agonist - upon d/c wtd
taper with oral steroid -> start inhaled steroid, beta agonist PRN
In addition to reduction of acute/chronic asthma sx what do inhaled steroids do?
reduction of progressive loss of lung fxn
Pt with asthma on albuterol prn with nocturnal awakening with sx of asthma best medcation
start with inhaled steroids -> THEN add long acting beta agonist
increased mortality in asthma related to…
inc FEV1 responsiveness
Pt with asthma p/w acute exacerbation - ABG 7.46/34/70/94% - pt receives neb tx with albut, after 3rd tx pt with BS b/l but decreased - now RR>30, HR 130, ABG 7.38/46/70/92% wtd
INTUBATE PT
oxygenation goal in asthma
PaO2>60, SaO2>90%
Pt with asthma being treated with b2 agonist, inhaled steroid, montelukast still has sx, removes carpet/rug, no cat - SERUM IGE high - wtd?
add omalizumab (anti-IgE ab)
Asthmatic on b2 agonist prn, inhaled triamcinolone, almeterol and monteleukast - still with frequent exacerbation, does not like to go on logn term oral steroids - wtd
start tiotropium (spiriva)
Chronic cough
upper airway cough syndorme (post nasal drip), asthma, GERD, chronic bronchitis, ACEi, non asthamatic eosinophilic bronchitis
Exc induced asthma
sx peak 10-15 after stopping exc, resove in 30 min mainly in cold weather - Dx with exc challenge test in cold air (drop FEV1 by 10-15%)
Exc induced asthma tx
short acting B2 agon 30 min prior to exc - if no effect then add cromyln Na+
If exc induced asthma SOB on cromyln
add inhaled steroids and monteleukast
Pt moves to minnesota (cold weather) - SOB in cold
start B agonist inhaler
Mechaism of cromyln Na+
mast cell stabilization (dec hitamine release)
Pt with exc induced asthma started on alb inhaler also wakes up at night 3x/wk with sx
start inhaled steroid
Allergic Bronco Pulmonary Asergillosis (ABPA)
colonization of upper airway with aspergillus i asthmatics - intense immed hypersensitive type rxn - inc IgE, +skin rxn to aspergillus Ag, serology +IgM, IgE, +eos, +brownish mucous plugs - > migratory pulm infiltrates (eos PNA)
pt with steroid dep asthma p/w cough, wheezing BROWN mucous plugs - WBC 15% eos, IgE>2000, CXR b/l infiltrates - steroids recently decreased - has parakeet
Allergic Broncopulm aspirgillosis (ABPA) +eos, inc IgE
Tx: inc steroids
Hypersensitivity pneumonitis
neg eos, normal IgE
Alergic angiitis of churg staus
+eos, normal IgE
Loeffler’s syndrome (pulm eosinophilia)
+eos, inc IgE
Fungal ball in cavity ASX
monitor
Fungal ball in cavity with sever hemoptysis
surgery
Hypersensitivity Pneumonitis
farmer’s lung - fever, chills dyspnea after work everyday, works in grian elevator, pet bird (bird fancier’s lung), methotrexate or nitrofurantoin or works with A/C units
Etio - hypersensitivity pneumonitis
inhaling organic dust with thermophilic actinomycetes - gound glass cxr, +serum AB - remove offending agents, +steroids
Pt with dog, cat, 2 parakeets and pigeon - cough, progressive SOB, CXR ground lgass - WBC no EOS - PFT restrictive
hypersensitivity pneumonitis (bird fancier lung)
70yo M chills, fever, non prod cough, pleuritis CP - recent acute pharygitis - received PCN/Amp w/o improvemnt - CXR with RLL infiltrate - BCtx neg, myoplasma,legionella ab neg - Dx?
Chlamydia pneumoniae
Psittacosis
disease asx in birds - comopletent fixation adn serology useful in dx
Pt with asthma on fluticasone inhaler/oral steroids - montelukast added, oral steroids tapered down - pw cough, sob, wk righ thand/foot - 25% eos, normal IgE - cxr dense infiltrates
allergic angiitis/Churg strauss pneumonitis - tx with steroids
Latin american pw asthma, recent immigrant - recurrent cough despite B2 agonists - eos 20%, round infiltrates on CXR - ANCA neg, ANA neg
Loeffler’s syndrome - strongyloides infxn - tx with thiabendazole
35yo non-smoker F pw cough, no sputum, wheezing, nighttime sweats - h/o asthma - b/l crackles on exam - PPD neg, high eos in sputum high ESR
chronic eos PNA - long term steroid treatment
35yo construction worker p/w SOB< no wheeze, no CP, no hemoptysis no exp to toxic fumes - b/l crackles - diffuse opacities/GG - bronch with copius tan fluid - alveolar proteinosis
tx - brochial lavage - defective macrophages causing buildup of surfactant in lungs
COPD
dx: h/o chronic smoking dec FEV1/FVC<0.70
COPD Spirometry determines?
Severity of disease
Gold Criteria Mild COPD
FEV1/FVC80 - tx short acting bronchodil prn, alb+=ipratropium
Gold Criteria Mod COPD
FEV1/FVC<80% - tx - shart acting bronco dil prnn plus long acting broncodil (tiotropium +-salmeterol+- rehab
Gold Criteria Severe COPD
FEV1/FVC <50%, short/long acting bronchodil + inh steroids
Gold Criteria very severe COPD
FEV1/FVC<30 - use long term O2 therapy, inh steroids, + bronchodilators short and long
Major risk factor for COPD
Smoking
Main tx for COPD
bronchodil, antichol, supp O2 SaO2>90%
Therapy survival benefit for COPD
O2 supp at least 15hrs/day
Pt with COPD hypoxia on O2 therapy, PO2 signficantly improves - cause of low PO2 is…
V/Q mismatch
Bronchodilators do what for COPD
reduce hyperinflation, dec RV, improve sx and exc tolerance - DO NOT IMPROVE MORTALITY
Tiotropium is better than Ipratropium
True
Side effect of salmeterol
dry mouth
Pt with COPD, +tob - best way to preserve lung fxn
quit smoking
Inc’d mortality in COPD
decreased free fat mass
COPD O2 sat goal
88-92%
Criteria for starting O2 on COPD pt
PaO288% with eveidence of Cor pulmonale, erythrocytosis (Hct>55%)
Best way to mamage COPD with secondary erythrocytosis
continuous O2 supp
Consequence of overcorrection of hypoxia
hypercarbia
Consequence of abrupt O2 supp d/c
respiratory arrest
Pt with COPD SOB during gold resting PO2 62
check O2 during exc - if <55 then start O2 supp
COPD Pt with daytime sleepiness/fatigue, resting PO2 64
check PO2 at night if <55 start supp O2
COPD pt travelsing by plane - resting PO2 64 -
If estimated PaO270
60yo COPD pt 2L O2 requirement wants to fly
needs to have airline arrange for O2 supp
Role of inhaled steroids COPD
decrease exacerbations
COPD acute exacerbation tx (with inc cough/sputum/sob
tiopropium + B agonist, IV steroids, empiric abx (azith/doxy -> NO ERYTHRO)
Adv COPD pt Pulm rehab
DOES NOT improve FEV1, does NOT dec mortality, does improve sx, QOL, dec exacerbations
Pulm rehab
program excercise training of muscles of ambulation
Pulm rehab doesn’t work, still low exc tol, ABG 7.42, PO2 62, pCO2 48 - FEV120, b/l upper lobe emphysema
lung volume reduction surgery
Acute Mountain Sickness
Leading cause altitude sickness - h/a, n/v/fatigue, dizziness, 6000ft, management=descent, dexanelimine, prevent with acetazolamide
High altitude pulm edema
leading cause of death with altitude sickenss - h/a, n/v/fatigue, dizzines PLUS SOB - 8000 to 12000 ft - tx descent, dexamethalazone, prev with acetazolamide or nifedipine
Thophylline decrease clearance by…
CHF, Liver dz, hypoxia, fever, cipro, erythro, OCP
Young woman h/o asthma on multiple meds and OCP c/o n/v - tachycardia/tremors
related to theophylline use
COPD with Po2 60 pCO2 50 - exacerbation of COPD - PO2 55 and pCO2 60 - refuses intubation
BIPAP
50yo COPD p/w SOB,cough - awake but in severe distress, using accessory muslces - pCO2 74, pO2 50, pH 7.18, HR 120, RR 36
intubate, mech ventillation
Mortality reduction COPD
flu vaccine
30yo M extensive bullous emphysema, b/l basal bullous cyts
check serum alpha 1 antitrypsin level
58yo F recurren tcough, foul smelling yllow sputum with hemoptysis, h/o PNA >1 yr ago - prominent cystic spaces in RLL, streamking oapcity, tram lines
dx bronchiectasis, high res CT scan - h/o PNA
Dyskinetic cilia syndrome
Bronchiectasis/sinusitis, infertiility, sinus inversus, Dx kartagener’s syndrome,confirm sperm motility test then testicular bronchi or sinus bx
Recurrent PNA cough/sputum x 1 year, mother died of lung dz
check High res CT
22yo M recurrent PNA, bronchitis since childhood, no allergy or GERD, IgG electrophoresis nl - +clubbing, cxr apical bullous
check sweat chloride
Cystic Fibrosis
inc’d ris kof endobronchial infxn with pseduomonas, staph, strep Pneum
tx: chest PT, abx (anti pseudom, topical tobramycin, inhaled hypertonic saline, bronchodil, ribonuclease, if bleed - bronch artery embolization
Reduce decline in lung fxn with CF patient colonized with pseudomonas
Azithromycin (anti-inflamm effect)