Pulmonary Flashcards
Focus: Diagnosis, Clinical Therapeutics
What spirometry readings are diagnostic of asthma?
FEV1/FVC <70%
FVC 80%+
Pre-Post bronchodilator FEV1/FVC increase by 12%
What criteria warrant poor control of asthma?
- SABA use >2x a week
- > 1 canister per month
ICS include?
Beclomethasone
Budesonide
Ciclesonide
Fluticasone
Mometasone
SAMA include?
ipratropiom
LAMA include?
tiotropium
aclidnium
glycopyrrolate
revefenacin
umeclidium
First line medication for asthma tx initiation in ADULTS?
Low dose ICS-LABA combo PRN
*ICS-formoterol
LABA has evidence that reduces risk of exacerbatios better than SABA
You can prescribe SABA as an alternative
Asthma tx if first line not sufficient?
Next step?
Next step?
Low dose ICS-formoterol daily rather than PRN
Next: Medium dose ICS-formoterol daily
Next: Medium/High dose ICS-formoterol + LAMA daily
First line medication for asthma tx initiation in 6-11?
Low dose ICS/SABA combo PRN
Asthma tx if first line not sufficient in 6-11yo?
Next step?
Next step?
Low dose ICS daily
Next: Low dose ICS-LABA or medium dose ICS daily
Next: Refer +/- high dose ICS-LABA
5yo and younger with asthma should NOT be prescribed?
beta blocker; only give ICS
Asthma exacerbation tx?
- Nebulizer (albuterol 3 doses in first hour then hourly + SAMA ipratropium)
- Injectable/oral methyprednisolone
**if severe exacerbation not resolving add IV mag
First line medication for COPD?
LABA + ICS
GOLD ABE Assessment Tool -
what do you use to determine A, B, or E type COPD
A = mMRC 0-1; CAT <10
B = mMRC 2+; CAT 10+
E = 2+ moderate exacerbations or 1+ hospitalizations
When do you add ICS to COPD tx?
only if
1. eos 300+ and MUST BE USED WITH LABA + LAMA
2. COPD exacerbation
Group A COPD tx?
SABA or LABA
Group B COPD tx?
LABA + LAMA
Group C COPD tx?
LABA + LAMA + ICS if eos 300+
COPD exacerbation tx (5 things to consider)?
- Albuterol 1-2 puffs q hr x2-3 doses then q2-4hrs or nebulizer 15min
- LABA or LAMA + get CBC to check eosinophil count
- If eos 300+ = Add ICS
- Add antibiotic if sputum and SOB = AMOX/CLAV, AZITHROMYCIN, TETRACYCLINE
- Add roflumilast (PDE-4i) to daily tx if chronic bronchitis or hx of exacerbation
LABAs include?
arformoterol
formoterol
indacaterol
olodaterol
salmeterol
COPD: emphysema vs chronic bronchitis diagnosis?
Emphysema: CXR/CT shows hyperinflation, loss of parenchyma & destruction of airspace distal to terminal bronchioles
-pink puffer, dry cough, little/no mucus, hyperresonance, decreased breath sounds, muscle wasting, barrel chest, pursed-lip breathing when severe
Chronic bronchitis: productive cough 3+ mo for 2+ years
-blue bloater, obesity, peripheral edema, Severe v/q mismatch (hypoxemia, hypercapnia), HIGH Hgb/Hct
COPD diagnosis on spirometry?
FEV1/FVC = <70%
FVC = 80%+ OR FVC <80% but TLC is normal
*FVC<80 and low TLC is mixed lung disease
Restrictive lung disease on spirometry?
FEV1/FVC 70+
FVC <80%
Acute bronchitis is likely due to what microbe?
Acute bronchitis presentation? typically lasts?
TOC?
Flu A & B, adenovirus, rhinovirus, coronavirus, RSV, parainfluenza
Presents: URI sx + cough 1-3 wk (“persistent cough with MSK pain”), wheeze or mild SOB
TOC: rest & fluids + NSAIDs + cough meds (dextromethorphan, guaifenesin)
Bronchiectasis characteristic findings?
Gold-standard dx?
COPD-like but CXR findings find abnormal dilation/thickening of airway; linear atelectasis
-chronic productive cough for mo/yrs
-crackles! or wheeze
-history of lung damage from past conditions/illnesses
DX: HRCT shows lack of tapering of bronchi (tram-tracking), signet-ring sign
Chronic productive cough with CXR findings of dilation and thickening of bronchial tree and HRCT shows tram-tracking and signet-ring sign
airway-arterial ratio 1.5+
Bronchiectasis
Tx of brochiectasis?
COPD tx algorithm
-what is mmRC (0-1?)
-what is CAT (<10?)
-what is eos (<300?)
Determine A, B, or E type
A: LABA
B: LABA + LAMA
C: LABA + LAMA +/- ICS
MC type of lung cancer?
Adenocarcinoma
Patients who have occupation of home-remodeling are more at risk of what lung cancer?
Mesothelioma
A solid nodule size of ____ suggest malignant lung tumor
A subsolid nodule size of ____ suggest malignant lung tumor
> 8mm
6+mm
Any growth of ______ during f/u of a pulm nodule requires _____?
Any growth at all requires biopsy
A peripherally located pulm nodule is most likely?
Adenocarcinoma or Large cell carcinoma
A centrally located pulm nodule is most likely?
Small cell, Squamous cell, carcinoid tumor
A patient showing symptoms of lung cancer experiences additional sx of shooting arm pain/weakness, ipsilateral miosis, ptosis, and anhidrosis. What is the most likely cause?
A pancoast tumor - type of sqaumous cell carcinoma that presents with Horner’s sydrome and arm weakness
A patient showing symptoms of lung cancer experiences additional sx of weight gain, fat padding, thrombophlebitis, and oliguria. What is the most likely cause?
Paraneoplastic syndrome - the tumor releases hormones/cytokines. Patient can develop SVC syndrome, SIADH, Cushing, Lambert-Eaton syndrome
Steps to diagnosis for central lung tumor and peripheral lung tumor?
CXR –> CT w/contrast
Central: transbronchial biopsy
Peripheral: transthoracic aspiration
Histopath labs (TTF-1, neoplastic gland formation, intracytoplasmic mucin, keratin production, or desmosome formation)
What sites of pulm nodule location are more likely lung cancer?
Peripheral; Upper lobe
The only lung cancer where excision is NOT recommended as first line?
Small cell lung cancer - chemo + radiation is first line
USPSTF recommendation for low-dose lung CT?
Annual starting at 50-80 for those with
1. 20PPY hx and currently smoke or quit within 15yrs
CAP most common bug?
Tx?
*S. pneumoniae
Tx: amoxicillin +/-azithromycin/doxycycline
CAP in immunocompromised individuals tx?
Duration?
Amox/clav + azithromycin/doxycycline
3-5 days
HAP most common bug?
Tx?
Duration?
*Pseudomonas
Tx: Pip-tazo/cefepime/ceftazidime
+ Vanc/linezolid if MRSA
7-14 days
VAP most common bug?
Tx?
Duration?
Meropenem + vanc/linezolid
10-14 days
Contact sports, injxn drug use, homosexual, crowded living should raise concern for what organism?
MRSA - cover with proper abx (vanc)
Aspiration PNA tx?
amp-sulbactam/amox-clav/clindamycin +/- metronidazole
PNA in a chronic alcoholic raises concern for what most likely organism?
Klebsiella
Histoplasmosis first line tx?
BIRD mnenomic?
Itraconazole - fungal infxn from bird droppings
B - bird/bat dropping
I - itraconazole
R - river valley
D - defining illness for AIDS CD4 <=150
At what CD4 count is an AIDS patient at risk of pneumoncystis pneumonia (PCP)?
CD4<200
What diagnostic test identifies type of microbe causing pneumonia?
Gram stain or PCR of sputum/BAL
PCP prophylaxis and tx for patients with CD4 count of ____?
CD4 <200 begin preventative low dose TMP-SMX
PNA with “Batwing” appearance on X-ray
Pneumocystis pneumonia (PCP)
TOC for PCP?
TMP-SMX x 21 days +/- prednisone
TOC for sleep terror/sleepwalking?
Benzos
Regimen and Duration of TB treatment?
RIPE x 2mo then RI x 4mo
Give on empty stomach 1hr before or 2hr after meal
R- rifampin
I - isoniazid
P - pyrazinamide
E - ethambutol
TOC for latent TB
3HP: RI q1wk or qd for 3mo
4R: Rifampin qd x4mo
What med in RIPE therapy most likely to cause AE of optic neuritis?
Ethambutol –> d/c if abnormal
What med in RIPE therapy most likely to cause AE of petechial rash and thrombocytopenia?
Rifampin
What TB med is CI or requires caution in pts with gout?
Pyrazinamide
Presence of Ghon focus + hilar nodes on CXR is indicative of what?
TB
Extrapulmonary TB can manifest in what other systems?
TB Meningitis
Vertebral TB (Potts Disease)
TB Lymphadenitis
Renal TB
Intestinal TB
Cough for 2+ weeks, hemopytsis, night sweats, fever, weight loss, LAD, pleuritic chest pain warrant concern for what diagnosis?
TB
Diagnosis of active TB?
CXR + AFB smear, culture, or NAAT of Sputum x3 and 8+ hrs apart with at least 1 early morning
TB skin test vs Interferon-Gamma Release Assays
TB skin test - screening of choice although not as specific
*Sputum culture w/ acid fast stain –> Interferon- Gamma Release Assay (IGRA) - patient has hx of Bacille Calmette-Guérin vaccine
A positive PPD in HIV patient is?
5mm
then get CXR to determine active vs latent TB
A positive PPD in children <4 is?
10mm
then get CXR to determine active vs latent TB
A positive PPD in DM, CKD, IVDU patients is?
then get CXR to determine active vs latent TB
10mm
A positive PPD in a healthy individual is?
then get CXR to determine active vs latent TB
15mm
How long does a pt require isolation once started on TB treatment?
2 weeks isolation then non-infectious
A patient who is chronically fatigued, daytime sleepiness, and HTN warrants?
Sleep study –> Polysomnography
A positive sleep apnea polysomnography is an AHI of?
- 5 or more with sx of OSA or comorbidities
- 15 or more without sx of OSA
Characteristics symptoms of TB?
-Dry to productive cough to blood in sputum
-drenching night sweats and fever
-pleuritic chest pain
-post-tussive rales or signs of consolidation
Signs of latent TB vs active TB?
TOC for active TB vs late TB?
Latent TB: fibrocaseous calcification, Ranke complex
Active TB: cavitary lesions, caseous necrosis, Ghon’s complex
Active: RIPE 2mo, 4mo
Late: Rifampin 4mo
Tx of OSA?
Tx of CSA?
OSA: CPAP
CSA: tx cause
How is central sleep apnea different from OSA?
the drive to breath declines due to respiratory center dysfunction
What is the most likely PNA organism?
Young, healthy pts living in close proximity. Presenting with extrapulm sx (cough, sore throat, otalgia)
Organism is resistant to beta-lactam abx, cannot be found on gram stain
Atypical PNA: mycoplasma pneumoniae
Most common atypical comm-PNA?
Mycoplasma pneumoniae
Most common organism associated with COPD with PNA?
H. influenza
Most common organism associated with chronic alcoholism, currant jelly sputum, and cavitary lesions?
Klebsiella pneumoniae?
“Clebsiella associated with all of the Cs”
What is the most likely PNA organism?
Pt presenting with cough + diarrhea and exposure to water source that has caused whole family to be sick. Hyponatremia and elevated AST/ALT are found
Legionella pneumophila
PNA diagnostic imaging and labs to order?
CXR
CBC - leukocytosis
CMP - dehydration, +/- high AST/ALT
only mod-severe PNA get culture and PCR - 3x over 8hrs apart
What severity score is used to determine severity of PNA?
What score indicates inpatient tx?
CURB65
C - confusion
U - BUN >7
R - respiratory rate 30+
B - BP <90/60
65 - age
2pts = inpatient
3pts = ICU
Tobacco dependence tx?
Patient has cigarette within 30min after waking?
Patient has cig after 30min?
3 options
- Nicotine gum 4mg, 2mg at least 9 daily for week 1-6; lozenges 4mg, 2mg at least 20 daily week 1-6
- nasal spray; patch (>10cigs per day, <10cigs) - 21mg/day to start; 14mg/day to start
- Bupropion, Varenicline (Chantix)