Pulmonary (Exam #2) Flashcards
What is always the initial study for pulmonary diagnostics, and what is the preferred view?
X-RAY (PA view)
What are the six anatomical landmarks that should be considered when reviewing pulmonary diagnostic imaging?
- Airway
- Bones
- Cardiac silhouette/PA
- Diaphragm
- Edges
- Fields
Why would you consider a high resolution CT (HRCT) over a low dose CT (LDCT), and vice versa?
- HRCT: better detail
- LDCT: less detail but good for SCREENING
What is the primary risk associated with CT scans (compared to an x-ray), and in what population should this be most considered?
MORE RADIATION
- Pediatrics are more radiosensitive than adults
What are pediatrics at increased risk for with CT (2)?
- Leukemia
- Brain tumors
What is there a link between with pregnant women and CT scans?
In utero exposure linked to pediatric CA mortality
What type of contrast is used for CT? What type of contrast is used for MRI?
- CT: iodine
- MRI: Gadolinium
What three conditions should be evaluated with contrast on CT scan?
- Vessels
- Malignancy
- Chest trauma
When using contrast with CT, which three complications/risks should be considered?
- Allergic reaction to contrast
- Contrast-induced nephropathy (CNI) = AKI
- Development of lactic acidosis if taking Metformin
What two medications can be used to pre-treat an allergy to Iodine contrast?
- Prednisone
- Benadryl
What two conditions (either or) must be met to be considered contrast-induced nephropathy (CNI)?
- Serum Cr >0.5 mg/dL
OR - > 25% from baseline
Before using CT WITH contrast, what five risk factors should be considered?
- 60+ years old
- History of renal disease
- HTN with meds
- DM
- Taking Metformin
What is the preferred method for assessing pulmonary vasculature, and why?
CTPA (CT Pulmonary Angiography) - Less invasive - Less expensive - Less time (than Catheter-Directed Pulmonary Angiography (Direct PA))
What is the gold standard for PE evaluation?
Catheter-Directed Pulmonary Angiography (Direct PA)
What two exams should be considered if Catheter-Directed Pulmonary Angiography (Direct PA) is inconclusive, but there is still high suspicion for a PE?
- CTPA
- V/Q scan
What is the primary risk associated with Magnetic Resonance Imaging (MRI/MRA)?
Nephrogenic systemic fibrosis
What are the two primary indications for using a V/Q scan?
Test of choice for…
- Diagnosis of PE in pregnant women
- Negative CR but high PE suspicion
How is a PET scan measured, and what finding is considered “possible malignancy”?
FDG via measurement of SUVs
- SUV >2.5 = possible malignancy
What finding is considered normal on US, and what finding is indicative of PTX on US?
Normal: seashore sign/motion lung beach
- PTX: barcode/stratosphere sign
What pulmonary diagnostic tool is commonly used in patients with obstruction of trachea or proximal bronchus?
Rigid Bronchoscopy
What two things can be determined using FEV-1/FVC ratio?
- Determine obstructive vs. restrictive
- Define severity of obstruction
What position is preferred for spirometry testing, and why?
Sitting preferred
- Less likelihood of syncope
What is the technique for spirometry testing (5 steps)?
- TIGHT SEAL over mouthpiece
- Relax and breathe normally
- Take deep breath in
- Forcefully exhale all air
- Take another deep breath in, then STOP
What test is used to evaluate reversibility, and for what disease is this often used?
What two findings are indicative of reversibility?
Bronchodilator Testing (specifically for asthma, which is reversible) - Reversibility if FEV-1 increases by 12% AND 200 mL
What is the technique for bronchodilator testing (3 steps)?
- Perform spirometry to obtain a baseline value
- Using nebulizer or inhaler, 2-4 puffs of bronchodilator medication (hold for 5-10 seconds)
- Perform spirometry again, 15 minutes after medication inhaled
What is another name for the Methacholine Challenge Test, and for what disease is this often used? What is the technique for this test (2 steps)?
What finding is indicative of a positive test?
Bronchoprovocation (specifically to confirm diagnosis of asthma)
- Give Methacholine (vasoconstrictor) via nebulizer
- Perform spirometry at 30 seconds and 90 seconds → (Methacholine concentration increases during this time)
- Positive test if FEV-1 decreases by 20%
What type of disease are these conditions classified as: Asthma, Asthmatic Bronchitis, COPD, Cystic Fibrosis, Emphysema, Upper Airway Obstruction? What does this mean?
Obstructive Disease
- Trouble blowing OUT air
- High lung volume
What type of disease are these conditions classified as: Pulmonary Fibrosis, infectious lung disease, thoracic deformities, Pleural Effusion, tumors, neuromuscular diseases, obesity? What does this mean?
Restrictive Disease
- Trouble getting air IN
- Reduced lung volume
What are these tests results indicative of: TLC and RV increased; FEV-1 and FEV-1/FVC decreased; FVC normal (hint: think GENERAL)?
Obstructive Disease
What are these tests results indicative of: TLC, FVC, RV and FEV-1 decreased; FEV-1/FVC normal or increased (hint: think GENERAL)?
Restrictive Disease
What is the technique for Diffusion Capacity (DLCO) testing (3 steps)?
What finding is indicative of a positive test?
- Inhale a single breath of gas (helium/CO)
- Expire
- Measure exhalation
- Diseased lungs = higher CO levels measured in exhaled gas
What condition specifically involves cough (nocturnal) often longer than 3 weeks; wheezing?
Asthma
- Wheezing is HALLMARK
What condition specifically involves increased AP diameter from air trapping, wheezing with prolonged expiratory phase?
Asthma
Which two triads are associated with Asthma, and what are the three components of each?
- ASA Triad/Samter’s Triad: sinus disease with nasal polyps, ASA sensitivity, severe asthma
- Atopic Triad: atopic dermatitis, allergic rhinitis, asthma
What is the diagnostic test of choice for Asthma, and at what age range is it recommended?
Spirometry
- Recommended >5 years
What are the five components of Intermittent Asthma?
- Symptoms less than/equal to 2 days/week
- Nighttime awakenings less than/equal to 2 nights/month if 5+ years; none if 0-4 years
- FEV-1 >80%
- Normal activity
- Less than/equal to 2 days/week SABA use to control sxs
What are the five components of Mild Persistent Asthma?
- Symptoms 2+ days/week (NOT daily)
- Nighttime awakenings 3-4 nights/month if 5+ years; 1-2 nights/month if 0-4 years
- FEV-1 >80%
- Minor limitations in activity
- 2+ days/week SABA use to control sxs
What are the five components of Moderate Persistent Asthma?
- Daily symptoms
- Nighttime awakenings 1+ nights/week if 5+ years (not nightly); 3-4 nights/month if 0-4 years
- FEV-1 60-80%
- Some activity limitations
- Daily SABA use to control sxs
What are the five components of Severe Persistent Asthma?
- Symptoms throughout the day
- Nighttime awakenings nightly if 5+ years; 1+ nights/week if 0-4 years
- FEV-1 <60%
- Extremely limited physical activity
- SABA use several times/days to control sxs
What is the recommended treatment for Intermittent Asthma?
SABA as needed
- Note: used in all stages PRN
What is the recommended treatment Mild Persistent Asthma?
Daily low dose ICS (inhaled corticosteroid)
- Montelukast/Cromolyn if peds
What is the recommended treatment Moderate Persistent Asthma (2, consider age)?
- Medium dose ICS + referral if 0-4 years
- Low dose ICS + LABA if 5+ years
What is the recommended treatment Severe Persistent Asthma (2)
- Medium dose ICS + LABA
- Montelukast + referral
If Asthma is poor controlled, what are the treatment options for Step 5 and Step 6 (2 each)?
Step 5:
- High dose ICS + LABA
- Montelukast + referral
Step 6:
- High dose ICS + LABA + OCS (oral corticosteroids)
- Montelukast + OCS + referral
What is the recommended follow up for Asthma?
Follow up should occur 3 months initially
- Then every 3-12 months depending on severity
What are the three possible results of PEFR (Peak Expiratory Flow Rate), and what disease is it used to evaluate?
Asthma (Acute Asthma Exacerbation)
- Green: >80% = good control
- Yellow: 50-80% = caution, SABA + med
- Red: <50% = medical emergency/ED
What condition involves inflammation → small airway disease AND/OR parenchymal destruction → airflow limitation?
COPD
What condition involves infiltration of submucosal layer by neutrophils; causes mucous gland enlargement → hypersecretion → loss of ciliary transport?
COPD
What component of COPD involves airway inflammation, airway remodeling = breathing through small straw?
Small airway disease
What component of COPD involves loss of alveolar attachments, decreased elastic recoil = balloon vs. brown bag?
Parenchymal destruction
What condition involves dyspnea, chronic cough, sputum production; DOE is early sxs?
COPD
What condition involves tobacco smoke, host factors (AATD, asthma, childhood URIs), occupation hazards, pollution?
COPD
Why is tobacco smoking a significant risk factor for COPD?
- Smoking stimulates elastase → elastase creates degenerative changes in elastin, release of cytotoxic oxygen radicals from WBCs = further tissue damage
What is the most common cause of Cor Pulmonale, and what is this?
RHF due to lung etiology
What condition involves barrel chest (increased AP diameter), prolonged expiration, abnormal breath sounds (decreased, wheezing, rhonchi), pursed lip breathing, tripod positioning, cyanosis?
COPD
What condition involves pursed lip breathing, tripod positioning, cyanosis?
COPD
What is the required diagnosis for COPD?
Spirometry
What condition should be considered if sxs in young patient (less than 45 years), non-smoker, FH of emphysema? What disease is this a risk factor for?
Alpha-1 Antitrypsin (AAT)
- Risk factor for COPD
Which condition involves CXR showing signs of air trapping; blebs or bullae = emphysema?
COPD
What is the 1st line treatment for COPD? What two other treatment measures should also be considered?
Prevent progression
- Smoking cessation
Also, vaccinations (Influenza and Pneumococcal) and supplemental O2 (15+ hours/day → increased survival)
What is the treatment recommendation for Grade A COPD?
Bronchodilator
What is the treatment recommendation for Grade B COPD (2)?
- LAMA
OR - LABA
What is the treatment recommendation for Grade C COPD?
LAMA
What is the treatment recommendation for Grade D COPD (2)?
- LAMA
OR - LAMA-LABA
What are the two classifications of bronchodilators, and what is the name hint for each?
- Beta2-Agonist (“-erol”)
- Anticholinergic (“-ium”)
What is the recommended short-acting Beta2-Agonist to treat COPD? Long-acting (2)?
- SABA: Albuterol
- LABA: Salmeterol or Formoterol
What is the recommended short-acting Anticholinergic to treat COPD? Long-acting (2)?
- SABA: Ipratropium bromide
- LABA Tiotropium bromide or Umeclidinium
When are corticosteroids recommended for treatment of COPD, and what are the two LABA-ICS we learned about?
Mostly used if COPD + Asthma
- Advair
- Symbicort
What is the recommended treatment for those with COPD + alpha-1 antitrypsin deficiency (AAT)?
Antiprotease Therapy
What condition involves acute changes in baseline dyspnea, cough, sputum to warrant a change in therapy?
Acute Exacerbations of COPD
What is the most common trigger associated with Acute Exacerbations of COPD?
Respiratory illness (viral vs. bacterial)
What is the recommended treatment for Acute Exacerbations of COPD (2)?
- Increase frequency of SABA (Beta2 Agonist recommended)
- Oral steroids (Prednisone 40mg daily for 5 days)
What is the recommended oral steroid dose for Acute Exacerbations of COPD?
Prednisone 40mg daily for 5 days
How do you classify Acute Exacerbations of COPD (mild vs. moderate/severe)? What is the treatment for moderate/severe?
- Mild: worsening of 1 of 3 cardinal sxs
- Moderate/Severe: worsening of 2 OR 3 of 3 cardinal sxs = need abx (Macrolide or Fluoroquinolone); if severe, also hospitalization
What education/treatment is always considered for bronchitis AND pneumonia?
- Smoking cessation
- Vaccinations
What is the most common etiology of Bronchitis?
VIRAL
- Influenza A & B
If Bronchitis is not viral, what is the second most common etiology (hint: pathogen)?
BACTERIAL 2nd
- Bordetella pertussis
What condition involves cough +/- sputum production for 5+ days for 1-3 weeks?
ACUTE Bronchitis
What does the presence of purulent sputum indicate?
NOTHING
- Certainly does not indicate bacterial infection
What condition involves at least 3 months of cough and sputum on most days of month for 2 consecutive years?
CHRONIC Bronchitis
What two PE findings are most commonly seen with Bronchitis? Which two findings should be negative?
- Wheezing
- Rhonchi that clears with coughing
Negative for crackles/rales or signs of consolidation
What is the recommended treatment for Bronchitis? Which four medications might be considered?
SUPPORTIVE
- NSAIDs
- Ipratropium
- Antitussives
- Albuterol/SVN
Which medication should always be avoided in the treatment of Bronchitis?
NO CODEINE
What specific condition involves prolonged progressive cough with whopping sound?
Bacterial Bronchitis
- Bordetella pertussis = “Whooping Cough”
What specific condition involves catarrhal (1-2 weeks) of URI/fever → paroxysmal (2-6 weeks) of cough and “whooping” → convalescent (weeks to months) where cough gradually resolves?
Bacterial Bronchitis
- Bordetella pertussis = “Whooping Cough”
What is the recommended diagnosis method for Bacterial Bronchitis (Bordetella pertussis = “Whooping Cough”)? What other two methods are often used, and in what time period?
Bacterial culture
- PCR if first 4 weeks
- Serology if 2-8 weeks
What is the treatment for Bacterial Bronchitis (Bordetella pertussis = “Whooping Cough”), and what is the primary goal?
Antibiotics
- Used to decrease transmission NOT resolve sxs
What are the two antibiotics that can be used to treat Bacterial Bronchitis (Bordetella pertussis = “Whooping Cough”)?
- Macrolides (Azithromycin or Clarithromycin, Erythromycin)
OR - Bactrim
What two conditions should ALWAYS be reported to the State Health Department?
- Bacterial Bronchitis (Bordetella pertussis = “Whooping Cough”)
- TB
Influenza (Viral Bronchitis) is typically considered self-limited, but what complication should always be considered?
PNA
What 7 populations are considered high-risk for Influenza (Viral Bronchitis)?
- <2 years
- 65+ years
- Immunocompromised
- Underlying chronic disease
- Pregnant
- Morbidly obese
- Resident of nursing home/chronic care facility
What condition involves fever, HA, myalgia, malaise?
Influenza (Viral Bronchitis)
What two medications should be considered for treatment of Influenza (Viral Bronchitis), and within what time period?
Within 48 hours of sxs onset:
- Tamiflu
- Relenza
- NOTE: reduces duration of sxs but not sxs themselves
What condition is an acute infection of pulmonary parenchyma?
Pneumonia
What specific condition involves aspiration from oropharynx?
Community-Acquired Pneumonia (CAP)
What specific condition involves inhaled contaminated droplets; via blood; infected pleura; pathogens proliferate faster/more than macrophages can handle → inflammatory response to increase defenses?
Community-Acquired Pneumonia (CAP)
What is the most common etiology of Community-Acquired Pneumonia (CAP), and what are the two most common etiologies?
BACTERIAL
- Streptococcus pneumoniae for typical
- Mycoplasma pneumonia for atypical
What specific condition involves acute onset fever and cough +/- sputum, hemoptysis, SOB, sweats, CP?
Community-Acquired Pneumonia (CAP)
- TYPICAL
What condition involves decreased/bronchial breath sounds, crackles/rales, signs of consolidation (dullness, increased tactile fremitus, bronchophony – spoken words louder/clearer, egophony – spoken “E” heard as “A”)?
Community-Acquired Pneumonia (CAP)
What condition involves infiltrate, consolidation, cavitation on CXR?
Community-Acquired Pneumonia (CAP)
What might be seen on labs for Community-Acquired Pneumonia (CAP)?
Leukocytosis with left shift = bacterial
What newer diagnostic test is being used for Community-Acquired Pneumonia (CAP) (hint: can differentiate bacterial vs. viral)?
Procalcitonin and CRP
What is the #1 predictor of good outcome for Community-Acquired Pneumonia (CAP)?
Right site of care
- OP vs. IP vs. ICU
What is the specific recommended treatment for uncomplicated Community-Acquired Pneumonia (CAP) (2)?
ABX FOR 5 DAYS:
- Macrolide (Azithromycin)
OR
- Doxycycline
What is the specific recommended treatment for complicated Community-Acquired Pneumonia (CAP) (__ + __, OR __)?
ABX FOR 5 DAYS:
- Beta-Lactam (Augmentin) + Macrolide (Azithromycin)
OR
- Levaquin
What nine conditions classify as complicated Community-Acquired Pneumonia (CAP)?
- Recent abx use
- COPD
- Liver/renal disease
- CA
- DM
- CHF
- Alcoholism
- Immunocompromised
- Asplenia
What condition is CURB-65 used for, and what are the conditions?
Pneumonia Risk Stratification:
- Confusion
- Urea/BUN HIGH
- Respiratory rate high
- BP high
- 65+ years
What condition involves 48+ hours after admission; high risk if ICU or mechanical ventilation?
Hospital-Acquired Pneumonia (HAP)
What condition involves subtype of HAP that developed 48-72 hours after intubation?
Ventilator-Associated Pneumonia (VAP)
What condition involves altered upper respiratory tract flora (2)?
- Hospital-Acquired Pneumonia (HAP)
- Ventilator-Associated Pneumonia (VAP)
What conditions indicate a diagnosis of Hospital-Acquired Pneumonia (HAP) or Ventilator-Associated Pneumonia (VAP) (__ AND __)?
- New/progressive infiltrate on imaging
AND - 2+ of fever, purulent sputum, leukocytosis
What is the recommended treatment for Hospital-Acquired Pneumonia (HAP)
and Ventilator-Associated Pneumonia (VAP)?
Abx PROMPTLY
What specific condition is associated with HIV/AIDS (low CD4 count)?
Pneumocystis jirovecii PNA (PCP)