Pulm: Bronchitis & Pneumonia Flashcards
What is the defining feature of chronic bronchitis?
Cough for at least 3 months in 2 consecutive years
Acute bronchitis is defined by the presence of…
cough > 5 days
What is the MC etiology of acute bronchitis?
Viral
What bacterial vector can cause bronchitis?
Bordatella pertussis
The presence of purulent sputum (is/isn’t) predictive of bacterial infx…
Is not
A patient presents with:
Wheezing
Bronchospasm (reduced FEV1)
Rhonchi cleared with coughing
What should you suspect?
Acute bronchitis
Is the presence of crackles/rales typical in acute bronchitis?
no
A patient presents with:
cough > 5 days
Wheezing
Bronchospasm
Rhonchi
How is a dx often made?
clinical for bronchitis
What diagnostic modality can be considered in acute bronchitis with the following abnormal findings?
Fever
tachypnea
Tachycardia
evidence of consolidation
cough lasting > 3 weeks
CXR
What condition are you assessing for when you get a CXR on a patient with acute bronchitis?
pneumonia
How should acute bronchitis be treated?
symptomatic relief
What is the only indication for abx in acute bronchitis?
pertussis
What phase of pertussis?
URI Sxs
Fever
1-2 week duration
Catarrhal
What phase of pertussis?
Persistent, paroxysmal cough
Inspiratory “whooping”
post-tussive emesis
2-6 week duration
paroxysmal
What phase of pertussis?
cough resolving
lasts weeks to months
convalescent
A patient presents with:
Persistent, paroxysmal cough that leads to vomiting.
What do you suspect and what diagnostic is gold standard for diagnosis?
Pertussis, bacterial culture of NP secretions
When should culture of NP secretions be used for pertussis dx?
weeks 0-2
When should PCR be used to dx pertussis?
weeks 0-4
When can serology be considered to dx pertussis?
weeks 2-8
What treatment of pertussis decreases transmission rate, but has little effect on symptom resolution?
abx
What are 1st and 2nd line abx to treat pertussis?
1st line: Macrolides
2nd: TMP-SMZ
Prevention is key to controlling pertussis. What vaccine is now given as a booster to adolescents?
Tdap
Who should receive abx prophylaxis for pertussis?
close contacts
Is pertussis reportable?
yes
Who is at risk for influenza progressing to pneumonia?
high-risk populations
extremes of ages immunocompromised pregnant obese crowded living
A patient presents with abrupt onset of:
Fever
HA
Myalgia
Malaise
Few findings on PE
What should you consider?
influenza
Which influenza diagnostic has the following features?
Low-moderate sensitivity
High specificity
10-30 minutes for results
RIDTs
The sensitivity of RIDTs is similar to clinical diagnosis. This means what for peak flu season?
negative RIDTs do not reliably exclude influenza, make clinical dx
Which influenza diagnostic has the following features?
most sensitive and specific
results in 2-6 hours
RT-PCR
Which influenza diagnostic hast he following features?
Confirmatory use by public health
not used for initial clinical mgmt
Viral culture
Treatment of flu is often symptomatic, but antivirals can be used. What drugs can help, and when must they be administered?
oseltamivir/zanamivir w/in 48 hours of onset
What is the most common complication of influenza?
pneumonia
What is the most common route of transmission for CAP?
aspiration from oropharynx
What is the most common bacterial cause of typical and atypical CAP?
typical: Strep. pneumo
atypical: mycoplasma
What etiology of CAP is unusual in immunocompetent hosts?
fungal
A patient presents with acute onset of the following sxs… is this CAP or Flu?
Fever
Cough
Sputum production
CAP
What are the pertinent negatives that distinguish CAP from flu?
myalgia, malaise, HA
What are 4 signs of consolidation that would be indicative of pneumonia on chest exam?
dullness to percussion
increased tactile fremitus
bronchophony
egophony
What two diagnostic modalities can help dx CAP?
CBC showing left-shift leukocytosis
CXR showing infiltrate, consolidation, cavitation
This PNA test has the following features:
- uses expectorated sputum prior to initiation of tx
- cannot be definitive proof of causative agent
- Generally not recommended outpatient
sputum culture
The following are complications of what disorder?
bacteremia sepsis abscess empyema respiratory failure
pneumonia
The CURB-65 score refers to what 5 atypical features?
Confusion Urea (> 7) RR 30+ BP (hypotension) 65 yo +
What CURB-65 score warrants admission to hospital?
2
What CURB-65 scores warrant ICU admission?
3-5
CRB-65 recommends admission to hospital with a score of ______ and eliminates the need to asses what?
1
don’t assess BUN
The PSI and CURB-65 scores should be applied as a(n) _______ rather than a ________ for decision making
adjunct to
replacement
What is the best predictor of a good outcome for CAP?
right site of care (inpatient/outpatient)
How long should the course of abx be for CAP?
at least 5 days
What is the mean time to return to work after initiating Abx with CAP?
6 days
When is follow-up CXR needed in CAP?
7-12 weeks post-treatment if 40+ or smokers
What two courses of abx can be used to treat outpatient, uncomplicated CAP?
Azithromycin 500mg PO day 1, then 250mg PO QD days 2-5
Doxycycline 100mg PO BID x 7-10 days
Complicated pneumonia is characterized by:
Recent abx COPD Liver/renal dz heart disease alcoholism asplenia immunosuppression
What treatment can be used outpatient for complicated CAP?
Augmentin 500 mg PO BID + macrolide (beta-lactam + macrolide)
or
levofloxacin 750mg PO QD x 5 days
CAP inpatient treatment requires a minimum 5 day course of abx and resolution of what?
afebrile 48-72 hours no supp. O2 HR < 100 RR < 24 SBP 90+
What is a major lifestyle factor that can help prevent and treat CAP?
smoking cessation
In the ICU what abx are used to treat PNA?
beta lactam + azithro OR fluoroquinolone
What can be used in the ICU for PNA with PCN allergy?
fluoroquinolone + Aztreonam
The following populations should be considered for what intervention?
65+
19-64 with increased risk due to: cardiopulm disease sickle cell tobb splenectomy liver disease
Pneumococcal vaccine
How do you treat HAP/VAP?
broad spectrum abx
A patient presents with:
New onset/progressive infiltrate on CXR
Fever
Purulent sputum
Leukocytosis
HAP/VAP
HAP/VAP Dx depends on presence of infiltrates and how many other criteria? (fever, purulent sputum, leukocytosis)
2
What diagnostic test is indicated to test for HAP/VAP?
Sputum gram stain and cx
What is the best way to treat HAP/VAP?
prevention
The following are ways to prevent what?
avoid antacids decontamination of OP selective gut decontamination probiotics positioning subglottic drainage
VAP
A patient presents with non-resolving pneumonia. You must consider what other dx?
atypical (viral, fungal) infx aspiration PNA CHF cancer fibrosis
What diagnostics are indicated in evaluating non-resolving PNA?
Chest CT
bronchoscopy
throacoscopy
open lung biopsy
A patient with concurrent AIDS presents with:
Fever
Nonproductive cough
dyspnea
extra-pulmonary lesions
What is this presentation concerning for?
PJP/PCP
A patient presents with the following lab findings:
high LDH
Low CD4
CXR showing reticular, ground glass opacity
Sputum
PJP/PCP
What is the treatment of choice for pneumocystitis jirovecii?
Bactrim
Who should receive bactrim as prophylaxis for PJP?
HIV + and
hx of PJP
CD4 < 200
OP thrush
The following are risk factors for what?
Post-op state
neuro compromise
anatomic defect
aspiration pneumonia
A CXR with aspiration pneumonia most commonly shows infiltrate in what location?
RLL
Aspiration pneumonia can be treated with what four abx regimens?
- piperacillin/tazobactam
- ampicillin/sulbactam
- clindamycin
- moxifloxacin