Test 2 - Pulmonary Flashcards
EOD Asthma
- Episodic/chronic Sx of airflow obstruction
- Reversibility of airflow obstruction, either spontaneously or following bronchodilator therapy
- Sx usually worse at night or in early morning
- Prolonged expiration & diffuse wheezes on physicals
- Limitation of airflow on PFT or +bronchoprovocation challenge
EOD COPD
- Hx of smoking
- Chronic cough, dyspnea & sputum production
- Rhonchi, dec. intensity of breath sounds & prolonged expiration on physical
- Airflow limitation on PFT that is not fully reversible & most often progressive
EOD Bronchiectasis
- Chronic productive cough w/ dyspnea & wheezing
2. Radiographic findings of dilated, thickened airways & scattered, irregular opacities
EOD Cystic Fibrosis
- Chronic or recurrent productive cough, dyspnea & wheezing
- Recurrent airway infections or chronic colonization w/ H influenza, P aeroginosa, S aureus or Burkholderia cepacia. Bronchiectasis & scarring on CXR
- Airflow obstruction on spirometry
- Pancreatic insufficiency, recurrent pancreatitis, distal intestinal obstruction syndrome, chronic hepatic disease, nutritional deficiencies, or male urogenital abnormalities
- Sweat Cl concentration >60 on two occasion or gene mutation
EOD Bronchiolitis
- Insidious onset of cough & dyspnea
- Irreversible airflow obstruction on PFT
- Minimal findings on CXR
- Relevant exposure or risk factor: toxic fumes, viral infections, organ transplantation, connective tissue disease
EOD Interstitial Lung Disease
- Insidious onset of progressive dyspnea & non-productive chronic cough
- Tachypnea, small lung volumes, bibasilar dry rales
- Digital clubbing & RHF w/ advanced disease
- CXR w/ low lung volumes & patchy distribution of ground glass, reticular, nodular, reticulonodular or cystic opacities
- Reduced lung volumes, pulmonary diffusing capacity & 6-min walk distance, hypoxemia w/ exercise
EOD Sarcoidosis
- Sx related to lung, skin, eyes, peripheral nerves, liver, kidney, heart & other issues
- Demonstration of noncaseating granulomas in a Bx
- Hepatosplenomegaly, hypercalcemia, inc. ACE
EOD Community Acquired Pneumonia
- Fever or hypothermia, tachypnea, cough w/ or w/o sputum, dyspnea, chest discomfort, sweats or rigors
- Bronchial breath sounds or inspiratory crackles
- Parenchymal opacity on CXR
- Occurs outside of the hospital or w/in 48 hrs of hospital admission in a Pt not residing in a long-term care facility
EOD Nosocomial pneumonia
- At least 2 of: fever, leukocytosis, purulent sputum
- New or progressive parenchymal opacity on CXR
- Especially common in Pts requiring intensive care or mechanical ventilation
EOD anaerobic pneumonia & lung abscess
- Hx or predisposition to aspiration
- Indolent Sx, including fever, wt loss, malaise
- Poor dentition
- Foul-smelling purulent sputum
- Infiltrate in dependent lung zone, w/ single or multiple areas of cavitation or pleural effusion
EOD Pulmonary Tuberculosis
- Fatigue, Wt loss, fever, night sweats & productive cough
- Risk factors for acquisition of infection: household exposure, incarceration, drug use, travel to an endemic area
- CXR - pulmonary opacities, most often apical
- Acid-fast bacilli on smear of sputum of sputum culture + for M tuberculosis
EOD Pulmonary Disease caused by Non-TB Mycobacteria
- Chronic cough, sputum production & fatigue; less commonly malaise, dyspnea, fever, hemoptysis & wt loss
- Parenchymal opacities on CXR, often w/ thin-walled cavities that spread contigously & often involve overlying pleura
- Isolation of non-TB mycobacteria in a sputum culture
EOD Histoplasmosis
- Linked to bird droppings & bat exposure, common along river valleys
- Most asymptomatic, respiratory illness most common problem
- Widespread disease common in AIDs or other immunosuppressed states w/ poor prognosis
- Bx of affected organs w/ culture or urinary polysaccharide antigen
EOD Coccidiodomycosis
- Flu-like illness w/ malaise, fever, backache, HA & cough
- Erythem nodosum common w/ acute infection
- Dissemination may result in meningitis, bony lesions or skin & soft tissue abscesses
- CXR findings vary from pneumonitis to cavitation
- Serologic tests useful, spherules containing endospores demonstrable in sputum or tissues
EOD Pneumocystosis (PCP)
- Fever, dyspnea, nonproductive cough
- Bilateral diffuse interstitial disease w/o hilar adenopathy by CXR
- Bibasilar crackles on auscultation in many cases
- Reduced pO2
- P jiroveci in sputum, bronchoalveolar lavage fluid or lung tissue
EOD Aspergillosis
- MCC of non-candidal invasive fungal infection in stem cell or organ transplant Pts
- Predisposing factors: leukemia, bone marrow or organ transplant, late HIV infection
- Pulmonary, sinus & CNS are most common disease sites
- Demonstration of galactomannan or beta-D-glucan in serum or other body fluid samples is useful for early Dx & Tx
EOD Respiratory Syncytial Virus & Other Paramyxoviruses
- RSV is a major cause of morbidity & mortality at extremes of age
- Care is supportive
- A monoclonal antibody against RSV, palivizumab, is good but expensive prophylaxis among Pts w/ certain at-risk pulmonary conditions
EOD Seasonal Influenza
- Abrupt onset w/ fever, chills, malaise, cough, coryza & myalgias
- Aching, fever & prostration out of proportion to catarrhal Sx
- Leukopenia
EOD Avian Influenza (H5N1)
- Mostly from SE Asia & Egypt
- Clinically indistinguishable from influenza
- Rapid antigen assays to confirm Dx
EOD H1N1
- Flu-like illness w/ consistent epidemiologic background
2. Respiratory swab
EOD Severe Acute Respiratory Syndrome (SARS)
- Mild, moderate or severe respiratory illness
- Travel to endemic area w/in 10 days before Sx onset (Places in Asia)
- Persistent fever, dry cough, dyspnea
- Dx confirmed by antibody testing or isolation of virus
- No specific Tx
EOD Pulmonary Venous Thromboembolism
- Predisposition to venous thrombosis
- Dyspnea, CP, hemoptysis, syncope
- Tachypnea & widened alveolar-arterial pO2 difference
- Elevated rapid D-dimer & characteristic defects on CT arteriogram of chest, ventilation-perfusion scan or pulmonary angiogram
EOD Pulmonary HTN
- Dyspnea, fatigue, CP & syncope on exertion
- Narrow splitting of 2nd heart sound w/ loud pulmonary component, findings of RV hypertrophy & cardiac failure in advanced disease
- Hypoxemia & inc. wasted ventilation on PFTs
- EKG evidence of RV strain or hypertrophy & RA enlargement
- Enlarged central pulmonary arteries on CXR
EOD Obstructive Sleep Apnea
- Daytime somnolence or fatigue
- Hx of loud snoring w/ witnessed apneic events
- Overnight polysomnography demonstrating apneic episodes w/ hypoxemia
EOD Acute Respiratory Distress Syndrome
- Acute onset of respiratory failure
- Bilateral radiographic pulmonary opacities
- Absence of elevated LA pressure
- Ratio of pO2 in arterial blood to fraction conc. of inspired O2 (FIO2) <200, regardless of the level of PEEP
EOD Cor Pulmonale
- Sx & signs of chronic bronchitis & pulmonary emphysema
- Elevated JVP, parasternal lift, edema, hepatomegaly & ascites
- EKG tall peaked P waves, R axis dev & RVH
- CXR - enlarged RV & PA
- Echo or radionuclide angiography excludes primary LV dysfunction
EOD Pleural Effusion
- May be asymptomatic; CP common w/ pleuritis, trauma or infection, dyspnea w/ large effusions
- Dullness to percussion & dec. breath sounds over the effusion
- Radiographic evidence of pleural effusion
- Diagnostic findings on thoracentesis
EOD Spontaneous Pneumothorax
- Acute onset of unilateral CP & dyspnea
- Minimal physical findings in mild cases
- Unilateral chest expansion, dec. tactile fremitus, hyperresonance, diminished breath sounds, mediastinal shift, cyanosis & HOTN in tension pneumo
- Presence of pleural air on CXR
EOD Bronchogenic Carcinoma
- New cough or change in chronic cough
- Dyspnea, hemoptysis, anorexia & wt loss
- Enlarging nodule or mass, persistent opacity, atelectasis or pleural effusion on CXR or CT
- Cytologic or histologic findings of lung CA in sputum, pleural fluid or Bx
EOD Mesothelioma
- Unilateral, nonpleuritic CP & dyspnea
- Distant (>20 yrs) Hx of exposure to asbestos
- Pleural effusion or pleural thickening or both on CXR
- Malignant cells in pleural fluid or tissue Bx
COPD vs asthma pathophysiology
C - CD8 cells, macrophages & neutrophils
A - CD4, eosinophils, leukotrienes, IgE
Obstruction vs restriction
O - big lungs, dec. airflow, normal/inc. lung V, normal/dec. DLCO
R - Normal airflow, dec. lung V, normal/dec. DLCO
FEV1/FVC ratio
Amount of air exhaled in 1st sec compared to total amount of air exhaled
Above LLN - 70% = restrictive or normal
If FVC is below normal = obstructive
What diseases can cause a dec. DLCO?
- Emphysema
- Fibrosis
- Pulmonary vascular disease
- Anemia
What disease can cause an inc. DLCO?
Inc. pulmonary capillary blood volume
- Polycythemia
- Pulmonary hemorrhage
- L to R shunt
- Asthma
What are the obstructive diseases?
- Emphysema
- Chronic bronchitis
- Asthma
- Bronchiectasis
- Cystic Fibrosis
- Sarcoidosis (sometimes)
What are the restrictive diseases?
- Pleural disease - effusions, mass
- Alveolar disease - edema, infiltrates
- Interstitial disease - fibrosis, sarcoidosis
- Neuromuscular disease - ALS, Myasthenia Gravis, Guillan-Barre
- Diaphragmatic paralysis
- Thoracic cage abnormality - obesity, kyphoscoliosis
Common S/S w/ obstructive diseases?
- DOE, cough, wheeze
- Smoker/exsmoker
- Quiet lungs/wheeze
- FH
- Barrel chest
- Pursed lip breathing
- Clubbing in CF
Common S/S w/ restrictive diseases?
- DOE, cough, orthopnea
- Smoker/exsmoker
- Crackles/rales
- FH
- Abnormal chest wall
- Clubbing
What is emphysema?
permanent enlargement of the airspaces distal to the terminal bronchioles w/ destruction of their walls w/o obvious fibrosis
-T lymphocytes, macrophages release elastases leading to destruction of airspaces
What is chronic bronchitis?
chronic, productive cough for 3 months in 2 successive years
-CD8 T lymphocytes, neutrophils
S/S Emphysema
Pink Puffers
- Dyspnea
- Thin
- Accessory muscle use
- Quiet chest
- Presents after 50
S/S Chronic Bronchitis
Blue Bloaters
- Chronic cough
- Productive mucopurulent sputum
- DOE
- Overweight & cyanotic
- Peripheral edema
- Noisy chest - rhonchi & wheezes
- Presents in late 30s & 40s
Causes of COPD
- Smoking
- alpha-1 antitrypsin deficiency
- Chemicals/pollution
Chest exam findings in COPD
- Hyperinflation w/ inc. A/P
- Inc. resonance
- Dec. breath sounds & early inspiratory crackles
- Wheezing may not be present at rest but can be evoked w/ forced expiration/exertion
- Prolonged duration of expiration
CXR w/ COPD
Hyperinflation of lungs & flat diaphragms
if emphysema main - parenchymal bullae or subpleural blebs
bronchitis - nonspecific peribronchial & perivascular markings
Tx COPD
A. FEV1 >50%, 0-1 exacerbations/yr, low risk
- SABA PRN, Anticholinergic/beta-agonist
B. A w/ more Sx
- SABA w/ pulmonary rehab, LABA, anticholinergic
C. FEV1 2 exac/yr
- SABA w/ pulmonary rehab, LABA w/ corticosteroid or anticholinergic, consider surgery
D. C w/ more Sx
- LABA + corticosteroid or anticholinergic, LABA + corticosteroid + phosphodiesterase inhibitors, consider surgery
What can cause asthma symptoms?
- Extrinsic allergies
- Allergic bronchopulmonary aspergillosis
- Intrinsic asthma
- Extrinsic nonallergenic
- Aspirin sensitivity
- Exercise induced
- Asthma w/ COPD
What can cause bronchiectasis?
- Cystic Fibrosis
- Alpha-1 antitrypsin deficiency
- Hypogammaglobulinemia
- Common variable immunodeficiency
- Primary ciliary diskinesia
- Congenital anatomic defects
- Pulmonary infections -TB, pertussis
- Foreign body aspiration
- Tumors
What disease causes a ‘finger in glove’ appearance on a CXR?
Bronchiectasis
-thickened bronchial walls w/ ring shadows
Dx Bronchiectasis
- Crackles, esp in bases
- Clubbing
- Cachexia
- Lady Windmere Syndrome
- C&S - H influenza, Pseudomonas aeruginosa, S PNA
- PFTs normal at 1st, restrictive or obstructive later
- CXR - finger in glove appearance
- CT - dilated & thickened airways, cystic lesions
Tx Bronchiectasis
- Hydration
- O2
- Postural drainage w/ chest percussion or flutter valves
- Smoking cessation
- Flu & pneumovax vaccines
- Surgical resection maybe
- Abx
What is the most common fatal hereditary disorder in whites?
Cystic Fibrosis
What is the most common cause of severe chronic lung disease in the young?
Cystic Fibrosis
S/S Cystic Fibrosis
- Inc. AP diameter
- Basilar crackles
- Hyperresonance to percussion
- Clubbing
- Salty taste to skin
PFT & CXR in Cystic Fibrosis
- Dec. FEV1/FVC ratio
- Dec. FEV1
- Inc. TLC
- Dec. DLCO
- Diffuse interstitial disease w/ bronchiectasis & nodular densities of mucoid impactions
Causes of interstitial lung disease
- Hypersensitivity pneumonitis - birds, hottub, molds, fungus
- Idiopathic
- Drugs - chemo, radiation, amiodarone, methotrexate, macrodantin
- Occupations - foundry, mining, stoneworker, asbestos
- Connective tissue disorders - scleroderma, RA, polymyositis, lupus