Pulmonary Flashcards
What is the most accurate diagnostic test for asthma?
Pulmonary function test (PFTs)
decrease FEV1/FVC that responds to bronchodilator; increased DLCO
What is the best initial test in acute asthma exacerbation?
- peak expiratory flow (PEF)
- arterial blood gas (ABG)
(quantifies severity of exacerbation)
What are to atopic diseases?
- asthma
- allergies
- eczema
What is step 1 treatment for chronic asthma?
inhaled short acting beta agonist (albuterol puffer)
What is step 2 treatment of chronic asthma?
add low dose inhaled steroids (fluticasone, triamcinolone)
What are adverse effects of inhaled steroids?
- dysphonia
2. oral candidiasis
What is step 3 treatment for chronic asthma?
add long acting beta agonist (salmeterol, formoterol)
What medication can be added to chronic asthma treatment in a patient with increased IgE level?
Omalizumab
What is the treatment for asthma exacerbation?
- oxygen
- albuterol
- oral steroids
(if no response, Magnesium or intubate)
A smoker/ ex-smoker presents with SOB worsened by exertion, barrel chest, cough and sputum most likely suffers from…
COPD
What is the best initial test for COPD?
Chest X-ray (increased anterior-posterior (AP) diameter, flattened diaphragms)
What is the most accurate diagnostic test for COPD?
Pulmonary function test (decreased FEV1/FVC <70^%, increased TLC, increased RV, incomplete improvement with albuterol)
What is treatment for COPD improves mortality and delays progression of disease?
- smoking cessation
- oxygen (if O2 sat < 88 or pO2< 55)
- flu and pneumococcal vaccine
What medications are used for symptoms relief in COPD?
- anticholinergics (tiotropium, ipratropium)
- albuterol
- pulmonary rehabilitation
- steroids
What medications are used for acute exacerbation of COPD?
- albuterol
- steroids
- antibiotics (macrolide, quinolones, cephalosporins)
What is the criteria for oxygen use in COPD?
- pO2 < 55 mmHg or O2 sat < 88%
2. if right sided HF or elevated hct, pO2< 60 mmHg or Os sat < 90%
What is the most common cause of bronchiectasis?
cystic fibrosis (other causes: infection, immune deficiency, foreign body, tumor, allergic bronchopulmonary aspergillosis)
A pt presents with recurrent episode of very high purulent sputum production, hempotysis and SOB most likely suffers from ..
bronchiectasis
What is the best initial test for bronchiectasis?
CXR (dilated, thickened bronchi, “tram tracks”)
What is the most accurate test for bronchiectasis?
high resolution CT scan
A pt with a hx of asthma (ectopic disease) presents with recurrent episodes of brown-flecked sputum and transient infiltrates on CXR most likely suffers from ..
Allergic Bronchopulmonary Aspergillosis
What is the best treatment for allergic bronchopulmonary aspergillosis?
- oral steroids (for severe)
2. itraconazole oral (recurrent episodes)
What are the GI manifestations of cystic fibrosis? (5)
- meconium ileus
- pancreatic insufficiency (steatorrhea, malabsorption of fat vitamins)
- recurrent pancreatitis
- intestinal obstruction
- biliary cirrhosis
What is the most accurate diagnostic test for cystic fibrosis?
sweat chloride test (increased)
What does treatment of cystic fibrosis exacerbation consist of?
- antibiotics (inhaled aminoglycosides)
- inhaled recombinant human deoxyribonuclease (break up clog)
- albuterol
- pneumococcal & influenza vaccines
- lung transplant
What is the most common cause of pneumonia in COPD pt?
H. influenzae
What is the most common cause of pneumonia in pt with recent viral infection?
S. aureus
What is the most common cause of pneumonia in pt with poor dentition, aspiration, foul-smelling sputum (rotten eggs)?
anaerobes
What is the most common cause of pneumonia in pt presenting with horseness?
Chlamydophilia pneumoniae
What is the most common cause of pneumonia in pt with hx of contaminated water sources/ cruise ship and associated GI and CNS complaints?
Legionella
What is the most common cause of pneumonia in patient with exposure to birds?
Chlamydia psittaci
What is the most common cause of pneumonia in veterinarian/ farmer (especially when animals tending to giving birth)?
Coxiella burnetii
A pt with pneumonia associated with “currant jelly” sputum and hemoptysis is most likely…
Klebsiella pneumoniae
What is the best initial test to use to identify specific microbial etiology of pneumonia?
sputum stain and culture
What are the indications that a sputum gram stain is adequate?
- > 25 WBCs
2. < 10 epithelial cells
What are the indications that there is a empyema on thoracentesis (analysis of pleural fluid)?
- LDH > 60% of serum level
- protein > 50% of serum level
- WBC count > 1000 or pH <7.2
What diagnostic test is specific for PCP (pneumocystic pneumonia)?
bronchoalveolar lavage (BAL)
What are the indications to hospitalize someone for pneumonia?
CURB 65: C-confusion U-uremia R-respiratory distress (RR>30 or PO2 < 60) BP low (SBP125; fever >104) if more than 2 points, then admission
Who should recieve the pneumococcal vaccine?
- any over 65 y/o
- pts w/ chronic liver, heart, kidney or lung disease
- asplenia, HIV, immunosuppressed
- CF leak and cochlear implant
What is the definition of health-care acquired pneumonia?
pneumonia developed more than 48 hous after admission or 90 days after hospitalization
What is the best empiric treatment for hospital acquired pneumonia?
- antipseudomenal cephalosporins (cefepime or ceftazidime)
- antipseudomonal penicillin (piperacillin/tazobactum)
- carbapenems
A pt on a mechanical ventilator that develops fever, new infiltrate on CXR, and purulent discharge most likely suffers from …
ventilator associated pneumonia
What is the most accurate test for ventilator associated pneumonia?
open lung biopsy
What are other diagnostic test for ventilator associated pneumonia?
- tracheal aspirate
- BAL
- protected brush specimen
- VATS
What is the best treatment for ventilator associated pneumonia?
antipseudomonal beta-lactam (same as HAP) with a second anti-pseudomonal agent (aminoglycoside/ fluroquinolone) with an MRSA agent (Vancomycin or linezolid)
What is a side effect of imipenem?
seizures (especially in setting of AKI)
What are patients with stroke, seizures, intoxification, endotracheal intubation likely to have?
Large volume aspiration leading to lung abscess
What diagnostic test can be used to determine microbiologic etiology of lung abscess?
lung biopsy
An HIV pt with CD4 count less than 200 who develops respiratory infection most likely has …
PCP (pneumocystis pneumonia)
What is the most accurate test for PCP?
bronchoalveolar lavage (BAL)
What is the best initial therapy for PCP?
Bactrim (trimethoprim-sulfmethaoxazole)
When do you add steroids to PCP treatment?
Severe
- pO2 < 70
- A-a gradient >35
What are alternative treatments for PCP in patients allergic to Bactrim?
- clindamycin with primaquine
2. pentamidine
What disease is primaquine contraindicated in?
G6PD deficiency
What are the 2 most common side effects of Bactrim?
- rash
2. bone marrow suppression
When do you start PCP prophylaxis with Bactrim?
CD4 count less than 200
When do you start atypical pneumonia prophylaxis with azithromycin in an HIV pt?
CD4 count less than 50
A pt presenting with fever, cough, weight loss, hemoptysis and night sweats most likely suffers from …
TB
most have crisk factor, cavity on CXR, or positive smear
What is the best initial test for symptomatic TB?
CXR
What is the most accurate test for TB?
pleural biopsy
What diagnostic test must be performed to exclude TB?
3 negative sputum stain and cultures for acid-fast bacilli
What is the treatment for active TB?
RIPE- 4 drug regimen for 2 months
(Rifampin, Isoniazid, Pyrazinamide, and ethambutol)
(then just rifampin and isoniazid for 4 months)
What is a common side effect of rifampin?
red color of body secretions and hepatotoxicity
What are the side effects of isoniazid?
peripheral neuropathy (use pyridoxine to prevent) and hepatotoxicity
What are the side effects of pyrazinamide?
hyperuricemia and hepatotoxicity
what are the side effects of ethambutol?
optic neuritis affecting color vision and hepatotoxicity
What is considered a positive PPD in a pt with HIV/ steroid use/ close contact w/ active TB pt/ transplant/ abnormal calcifications on CXR?
induration > 5 mm
What is considered a positive PPD in pts who are recent immigrants/ prisoners/ healthcare workers/ alcoholics/ diabetics?
induration > 10mm
What is the next best step in a pt with a positive PPD?
CXR to exclude acitve disease
When do you use the 2 stage PPD testing?
if a pt has never had PPD before
What screen test can be used in pts with hx of BCG vaccine?
interferon gamma release assay
What is the best initial step in management of a patient wiht lung lesions?
compare size to old CXR
What risk factors are suggestive of malignancy in a pt with a solitary lung nodule? (9)
- > 40 y/o
- enlarging
- smoker
- speculated (spikes)
- large (>2 cm)
- atelectasis
- adenopathy present
- sparse, eccentric calcification
- abnormal PET scan
What is the next best step in management of a pt with a solitary lung nodule and multiple risk factors for malignancy?
resection
What is the most common adverse effect of transthoracic biopsy?
pneumothorax
What are specific causes of pulmonary fibrosis? (7)
- amiodarone
- bleomycin
- busulfan
- nitrofurantoin
- methylsergide
- cyclophosphamide
- radiation
What is the cause of pneumoconiosis in a coal miner?
coal
What is the cause of penumoconiosis in a sandblasting, rockin mining or tunneling worker?
silicosis
What is the cause of pneumoconiosis in a shipyard worker, pipe fitter, or insulator?
abestosis
What is the most accurate test for pulmonary fibrosis?
high resolution CT
what pneumoconiosis is most likely to respond to steroids?
berylliosis (electronic manufacture)
An african american women with SOB and hilar adenopathy on CXR or CT most likely suffers from ….
sarcoidosis
What is the most accurate test for sarcoidosis?
lymph node biopsy (non-caseating granuloma)
What are to associated things that are elevated in some patients with sarcoidosis?
- ACE (increased BP)
2. Calcium (hypercalcemia & hypercalciuria due to production of vitamin D by granuloma)
What is the treatment for sarcoidosis?
steroids