Infectious Disease 2 Flashcards
HIV + pt presents with fever, headache, and focal neuro signs. What is the next best dx step?
CT w/ contrast
HIV pt. w/ fever, headache, and focal neuor signs has ring-enhancing lesions on CT. What is the next best step?
give pyrimethamine and sulfadiazine
HIV pt. w/ ring-enhancing lesions on CT does not respond to pyrimethamine and sulfadizine. What is the most likely Dx? What is the next best step?
CNS lymphoma; brain biopsy
HIV (-) pt has ring-enhancing lesions on CT. What are the 2 main categories in the differential? What is the next best diagnostic step?
Tumor or infection; biopsy
What Dx matches extremely elevated aminotransferases (many thousand U/L) without an AST:ALT ratio of ~2:1?
acetominaphen toxicity
What are the top 3 pathogens causing sinusitis and otitis media in order?
Pneumococcus, H. influenzae, and Moraxella
What is the most sensitive physical finding for the diagnosis of otitis media?
immobility of the tympanic membrane
What is the best initial test for suspected sinusitis?
radiographic imaging (X-ray, CT, or MRI)
What is the best initial therapy for sinusisits or otitis?
amoxicillin
Which GAS infection can cause only glomerulonephritis?
skin infection (impetigo)
What is the best tx for the flu w/in the first 48 hrs?
oseltamivir or zanamivir
What kind of drugs are oseltamivir and zanamivir?
neuraminidase inhibitors
What is the tx for bacterial pharyngitis in a person who had a rash w/ penicillin?
1st gen. cephalosporie, e.g. cephalexin
At what age should the general pop. start getting yearly flu vaccination?
50 y.o.
Who else shoudl recieve the flu vaccine aside from >50yo, healthcare workers, and immunosuppressed?
chronic heart or lung disease, nursing homes residents, 2nd or 3rd trimester of pregnancy
