08.20 - Pneumonia, CAP Part 3 (Cross) - Questions Flashcards
Cause of bronchial breath sounds
Dense consolidation of lung parenchyma (pneumonia) results in transmission of large airway noises to periphery
When will percussion of lungs have deadend tone
If air-filled tissue is displaced by fluid or infiltrated w/ white cells and bacteria
In the presence of consolidation, tactile fremitus becomes
more pronounced.
Which of the following is not a CAP: S Aureus, H Influenzae, K pneumoniae, M catarrhalis
All are CAP causes
Currant Jelly sputum; Chronic alcoholics and malnourished
K pneumoniae
Post-viral respiratory infection
S Aureus
6 serotypes; Encapsulated and Non-; Gram neg coccobacillus
H influenzae
Grows on chocolate agar; Requires factors V and X for growth
H influenzae
Necrotizing pneumonia with abscess formation
S Aureus, K Pneumoniae
H influenzae: treatments of choice for mild infection and serious infection
Amoxicillin for mild, Ceftriaxone for serious
Also causes otitis media, epiglottitis, meningitis
H influenzae
Vaccine for this bug incorporates the capsular polysaccharide b; Ab’s against the capsule are protective
H influenzae
Common bacterial causes of acute COPD exacerbations
H influenzae, M catarrhalis
3 important pearls about S Aureus
Post-viral; HAP; Necrotizing
3 important pearls about H Influenzae
Capsule; COPD; Chocoalte agar
3 important pearls about K pneumoniae
Capsule; Necrotizing; Chronic alcoholics and malnourished
2 important pearls about M cararrhalis
COPD; Elderly
T/F: Prolonged Abx tx is risk factor for HAP
TRUE
Two important facets of treating HAP
Cover resistant gram positives, such as MRSA, with Vanc; Cover resistant gram negatives, such as Pseudomonas; with 4th gen Cephalosporin or Zosyn
How do you cover resistant gram positives, such as MRSA
Vancomycin
How do you cover resistant gram negatives, such as Pseudomonas
4th gen cephalosporin or Zosyn
2 most common organisms that cause HCAP
Pseudomonas Aeruginosa, Staph Aureus
1st gen macrolide
Erythromycin
2nd gen macrolide
Clarithromycin
3rd gen macrolide
Azithromycin
Aminoglycoside
Gentamicin
Staph Aureus vs Epidermidis
Catalase-positive; Coagulase negative; Hemolytic
Chief virulence factor of H influenzae
Capsule
Pseudomonas has the ability to survive in
water
Drug of choice for extended spectrum beta-lactamase-producing organisms
Carbapenem