Rapid Review: Infectious Disease Flashcards
The 3 most common causes of fever of unknown origin
Infection, cancer, and autoimmune disease
Four signs and symptoms of streptococcal pharyngitis
Fever, pharyngeal erythema, tonsillar exudate, lack of cough
A nonsuppurative complication of streptococcal infection that is not altered by treatment of primary infection
Postinfectious glomerulonephritis
The most common predisposing factor for acute sinusitis
Viral URI
Asplenic patients are particularly susceptible to these organisms
Encapsulated organisms: pneumococcus, meningococcus, haemophilus influenzae, klebsiella
The number of bacteria needed on a clean-catch specimen to diagnose a UTI
10^5 bacteria/mL
Which healthy population is susceptible to UTIs
Pregnant women. Treat aggressively
A patient from Ca or Az presents with fever, malaise, cough, and night sweats. Diagnosis? Treatment?
Coccidioidomycosis; amphotericin B
Nonpainful chancre
Primary syphilis
A blueberry muffin rash is characteristic of what congenital infection?
Rubella
Meningitis in neonates. Causes? Treatment?
GBS, E coli, Listeria. Treat with gentamicin and ampicillin
Meningitis in infants. Causes? Treatment?
Pneumococcus, meingococcus, H influenze. Treat with cefotaxime and vancomycin
What should always be done prior to LP?
Check for increased ICP; look for papilledema
CSF findings:
- Low glucose, PMN predominance
- Normal glucose, lymphocytic predominance
- Numerous RBCs in serial CSF samples
- Increased gamma globulins
- Bacterial meningitis
- Aseptic (viral meningitis
- Subarachnoid hemorrhage
- MS
Initially presents with a pruritic papule with regional lymphadenopathy; evolves into a black eschar after 7-10 days. Treatment?
Cutaneous anthrax. Treat with penicillin G or ciprofloxacin
Findings in tertiary syphilis
Tabes dorsalis, general paresis, gummas, Argyll Robertson pupil, aortitis, aortic root aneurysms
Characteristics of secondary Lyme disease
Arthralgias, mirgratory polyarthropathies, Bell’s palsy, myocarditis
Cold agglutinins
Mycoplasma
A 24 year old man presents with soft white plaques on his tongue and the back of his throat. Diagnosis? Workup? Treatment?
Candidal thrush. Workup should include an HIV test. Treat with nystatin oral suspension
At what CD4 count should Pneumocystitis jiroveci penumonia prophylaxis be initated in an HIV+ patient?
Risk factors for pyelonephritis
Pregnancy, vesicouretral reflux, anatomic anomalies, indwelling catheters, kidney stones
Neutropenic nadir postchemotherapy
7-10 days
Erythema migrans
Lesion of primary lyme disease
Classic physical findings for endocarditis
Fever, heart murmur, Osler’s nodes, splinter hemorrages, Janeway lesions, Roth’s spots
Aplastic crisis in sickle cell disease
Parvovirus B19
Ring-enhancing brain lesion on CT with seizures
Taenia solium (cysticercosis)
NTO: Branching rods in oral infection
Actinomyces israelii
NTO: Weakly gram +, partially acid fast in lung infection
Nocardia asteroides
NTO: Painful chancroid
Haemophilus ducreyi
NTO: Dog or cat bite
Pasteurella multocida
NTO: Gardener
Sprorthrix schenckii
NTO: Raw pork and skeletal muscle cysts
Trichinella spiralis
NTO: Sheepherders with liver cysts
Echinococcus granulosus
NTO: Perianal itching
Enterobius vermicularis
NTO: Pregnant women with pets
Toxoplasma gondii
NTO: Meningitis in adults
Neisseria meningitidis
NTO: Meningitis in elderly
Streptococcus pneumoniae
NTO: Meningoencephalitis in AIDS patients
Cryptococcus neoformans
NTO: Alcoholic with pneumonia
Klebsiella
NTO: Currant jelly sputum
Klebsiella
NTO: Malignant external otitis
Pseudomonas
NTO: Infection in burn victims
Pseudomonas
NTO: Osteomyelitis from a foot wound puncture
Pseudomonas
NTO: Osteomyelitis in a sickle cell patient
Salmonella
A 55 year old man who is a smoker and a heavy drinker presents with a new cough and flulike symptoms. Gram stain shows no organisms; silver stain of sputum shows gram negative rods. What is the diagnosis?
Legionella pneumonia
A middle aged man presents with acute onset monoarticular joint pain and bilateral Bell’s palsy. What is the likely diagnosis, and how did he get it? Treatment?
Lyme disease, Ixodes tick, doxycycline
A patient develops endocarditis 3 weeks after receiving a prosthetic heart valve. What organism is suspected?
S aureus or Staphylococcus epidermidids
A patient develops endocarditis in a native valve after having a dental cleaning
Streptococcus viridans