Infectious Disease Flashcards
What should you do with patients with positive PPD with negative CXR?
Treat with 6 months daily INH, or 9 mo INH + pyridoxine
How to treat active pulm TB?
8 weeks INH, rifampin, pyrazinamide, followed by 4 mo. of INH and rifampin
When is PPD positive in patients with no risk factors?
> 15 mm induration
> 5 mm on PPD is positive in what patients
HIV, recent contact with TB pos person, TB on CXR, immunosuppressed patients
> 10 mm on PPD is positive in what patients
Foreignors from endemic TB, Injection drug users, Prisoners/Homeless, DM, CKD, Heme onc, fibrotic lung disease, Children <4 yrs, teens exposed to high-risk adults
When to suspect trichinellosis
GI complaints followed by characteristic periorbital edema, myositis, and eosinophilia. Subungual splinter hemorrhages, and conjunctival or retinal hemorrhages
What does neurocysticercosis look like
Multiple, small (<1 cm), fluid filled cysts in the brain parenchyma
What abx are effective at treating Pseudomonas
Piperacillin-tazobactam, cefepime, ceftazidime (3rd gen.)
Most common causes of Typical CAP
- Strep pneumo 2. H flu, aerobic GNR
atypical CAP causes
- Mycoplasma, chlamydia, legionella
Nosocomial PNA causes
- Staph aureus; pseudomonas, aerobic GNR
PNA in alcoholics is
Klebsiella
PNA in immigrants
TB
PNA in nursing home
Nosocomial infection
PNA in aids
Pneumocystis (PCP) or TB